[ 47.179741][ C0] kernel_clone+0x233/0x960 [ 47.184319][ C0] ? create_io_thread+0x170/0x170 [ 47.189355][ C0] ? finish_task_switch+0x16b/0x790 [ 47.195022][ C0] ? kthread_blkcg+0xd0/0xd0 [ 47.199846][ C0] kernel_thread+0xfe/0x170 [ 47.205227][ C0] ? ptrace_event_pid+0x180/0x180 [ 47.210372][ C0] ? kthread_blkcg+0xd0/0xd0 [ 47.215280][ C0] ? _raw_spin_trylock_bh+0x150/0x150 [ 47.220929][ C0] ? __kasan_check_read+0x11/0x20 [ 47.226127][ C0] kthreadd+0x346/0x480 [ 47.230672][ C0] ? tokenize_frame_descr+0x93/0xc0 [ 47.236142][ C0] ? kthread_stop+0x3e0/0x3e0 [ 47.240902][ C0] ? _raw_spin_unlock_irq+0x4e/0x70 [ 47.246259][ C0] ? calculate_sigpending+0x7c/0x90 [ 47.252232][ C0] ? kthread_stop+0x3e0/0x3e0 [ 47.257283][ C0] ret_from_fork+0x1f/0x30 [ 47.262251][ C0] [ 47.265480][ T33] CPU: 1 PID: 33 Comm: writeback Not tainted syzkaller #0 [ 47.265538][ C0] FAULT_INJECTION: forcing a failure. [ 47.265538][ C0] name failslab, interval 1, probability 10, space 0, times 84 [ 47.273428][ T33] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 47.298241][ T33] Workqueue: writeback wb_workfn (flush-8:0) [ 47.305085][ T33] Call Trace: [ 47.308809][ T33] [ 47.311821][ T33] __dump_stack+0x21/0x30 [ 47.316357][ T33] dump_stack_lvl+0x110/0x170 [ 47.321483][ T33] ? show_regs_print_info+0x20/0x20 [ 47.327183][ T33] ? prandom_u32+0x24d/0x290 [ 47.332442][ T33] dump_stack+0x15/0x20 [ 47.337338][ T33] should_fail+0x3ab/0x500 [ 47.341951][ T33] __should_failslab+0xa4/0xe0 [ 47.348398][ T33] should_failslab+0x9/0x20 [ 47.353905][ T33] slab_pre_alloc_hook+0x39/0xd0 [ 47.359113][ T33] ? mempool_alloc_slab+0x1d/0x30 [ 47.364344][ T33] kmem_cache_alloc+0x44/0x260 [ 47.369210][ T33] ? mempool_free+0x330/0x330 [ 47.374684][ T33] mempool_alloc_slab+0x1d/0x30 [ 47.380418][ T33] mempool_alloc+0x167/0x4c0 [ 47.385392][ T33] ? virtqueue_add+0x3541/0x4210 [ 47.390574][ T33] ? mempool_resize+0x880/0x880 [ 47.396223][ T33] sg_pool_alloc+0xb0/0xe0 [ 47.401105][ T33] __sg_alloc_table+0x1c1/0x6d0 [ 47.406684][ T33] sg_alloc_table_chained+0x8b/0x1e0 [ 47.411999][ T33] ? sg_alloc_table_chained+0x1e0/0x1e0 [ 47.417627][ T33] scsi_alloc_sgtables+0x292/0x8a0 [ 47.423291][ T33] ? scsi_io_completion_action+0xce0/0xce0 [ 47.429418][ T33] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 47.435760][ T33] sd_init_command+0x60e/0x2610 [ 47.440619][ T33] scsi_queue_rq+0x176e/0x31c0 [ 47.445747][ T33] blk_mq_dispatch_rq_list+0xa06/0x1c50 [ 47.452183][ T33] ? blk_mq_get_driver_tag+0x920/0x920 [ 47.458774][ T33] blk_mq_do_dispatch_sched+0xadf/0xc90 [ 47.467494][ T33] ? blk_mq_exit_sched+0x590/0x590 [ 47.474560][ T33] __blk_mq_sched_dispatch_requests+0x32c/0x410 [ 47.484522][ T33] ? blk_mq_sched_dispatch_requests+0x1c0/0x1c0 [ 47.493004][ T33] blk_mq_sched_dispatch_requests+0x102/0x1c0 [ 47.499629][ T33] __blk_mq_run_hw_queue+0xf3/0x170 [ 47.505674][ T33] __blk_mq_delay_run_hw_queue+0x17e/0x420 [ 47.512504][ T33] ? blk_mq_delay_run_hw_queue+0x30/0x30 [ 47.519359][ T33] ? sbitmap_any_bit_set+0x119/0x160 [ 47.524841][ T33] blk_mq_run_hw_queue+0x282/0x3a0 [ 47.530571][ T33] blk_mq_sched_insert_requests+0x1cd/0x340 [ 47.536793][ T33] blk_mq_flush_plug_list+0x4e2/0x6b0 [ 47.542426][ T33] ? blk_mq_insert_requests+0x340/0x340 [ 47.548759][ T33] ? dd_prepare_request+0xd/0x40 [ 47.553888][ T33] blk_flush_plug_list+0x404/0x450 [ 47.559672][ T33] ? blk_check_plugged+0x270/0x270 [ 47.564978][ T33] ? preempt_count_add+0x90/0x1b0 [ 47.570115][ T33] ? blk_account_io_start+0x2b8/0x2f0 [ 47.575975][ T33] blk_mq_submit_bio+0xb23/0x1900 [ 47.582366][ T33] ? ktime_get+0x12f/0x160 [ 47.586963][ T33] ? blk_mq_try_issue_list_directly+0x490/0x490 [ 47.594484][ T33] ? __submit_bio+0x900/0x900 [ 47.599348][ T33] ? blk_try_enter_queue+0x165/0x350 [ 47.605148][ T33] __submit_bio+0x817/0x900 [ 47.610194][ T33] ? trace_raw_output_block_rq_remap+0x260/0x260 [ 47.616863][ T33] ? up_read+0x56/0x1d0 [ 47.621011][ T33] submit_bio_noacct+0x73b/0x800 [ 47.626682][ T33] ? __this_cpu_preempt_check+0x13/0x20 [ 47.632221][ T33] ? __mod_memcg_lruvec_state+0x122/0x1b0 [ 47.639287][ T33] ? blk_put_request+0x20/0x20 [ 47.645914][ T33] ? fscrypt_mergeable_bio+0x1c6/0x670 [ 47.653100][ T33] ? page_mapping+0x210/0x2d0 [ 47.658729][ T33] ? blkcg_set_ioprio+0x1f6/0x320 [ 47.665513][ T33] submit_bio+0x367/0x620 [ 47.670780][ T33] ? submit_bio_noacct+0x800/0x800 [ 47.676526][ T33] ? bio_add_page+0x2c2/0x460 [ 47.681590][ T33] ext4_bio_write_page+0xeff/0x1b40 [ 47.687346][ T33] mpage_submit_page+0x17d/0x220 [ 47.694202][ T33] ext4_writepages+0x19a3/0x30a0 [ 47.700777][ T33] ? ext4_readpage+0x220/0x220 [ 47.708495][ T33] ? __kasan_check_write+0x14/0x20 [ 47.713827][ T33] ? ext4_readpage+0x220/0x220 [ 47.718987][ T33] do_writepages+0x476/0x6d0 [ 47.724333][ T33] ? __writepage+0x130/0x130 [ 47.729935][ T33] ? __kasan_check_write+0x14/0x20 [ 47.736603][ T33] ? __kasan_check_write+0x14/0x20 [ 47.743188][ T33] ? _raw_spin_lock+0x94/0xf0 [ 47.748965][ T33] __writeback_single_inode+0xd9/0x9e0 [ 47.755680][ T33] ? wbc_attach_and_unlock_inode+0x194/0x5f0 [ 47.762802][ T33] writeback_sb_inodes+0x9f3/0x1610 [ 47.769225][ T33] ? queue_io+0x4b0/0x4b0 [ 47.775869][ T33] ? down_read_trylock+0x317/0x630 [ 47.781551][ T33] __writeback_inodes_wb+0x127/0x400 [ 47.787122][ T33] writeback_inodes_wb+0x19d/0x240 [ 47.792773][ T33] ? trace_writeback_pages_written+0xf0/0xf0 [ 47.800860][ T33] ? kvm_sched_clock_read+0x18/0x40 [ 47.807803][ T33] ? kthread_data+0x50/0xc0 [ 47.814312][ T33] wb_workfn+0xea3/0xf30 [ 47.820356][ T33] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 47.826836][ T33] ? __set_cpus_allowed_ptr_locked+0x5cc/0x1020 [ 47.833532][ T33] ? inode_wait_for_writeback+0x220/0x220 [ 47.839761][ T33] ? __kasan_check_write+0x14/0x20 [ 47.845048][ T33] ? _raw_spin_lock+0x94/0xf0 [ 47.850933][ T33] ? _raw_spin_trylock_bh+0x150/0x150 [ 47.856393][ T33] ? _raw_spin_unlock+0x4d/0x70 [ 47.861410][ T33] process_one_work+0x6c8/0xbb0 [ 47.866707][ T33] rescuer_thread+0x73d/0xf80 [ 47.871641][ T33] ? rcu_free_pwq+0x30/0x30 [ 47.876747][ T33] ? __kasan_check_read+0x11/0x20 [ 47.882333][ T33] ? __kthread_parkme+0xab/0x1f0 [ 47.887308][ T33] kthread+0x3f5/0x4f0 [ 47.891911][ T33] ? rcu_free_pwq+0x30/0x30 [ 47.896427][ T33] ? kthread_blkcg+0xd0/0xd0 [ 47.901105][ T33] ret_from_fork+0x1f/0x30 [ 47.905786][ T33] [ 47.908835][ C0] CPU: 0 PID: 2 Comm: kthreadd Not tainted syzkaller #0 [ 47.915838][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 47.919252][ T33] FAULT_INJECTION: forcing a failure. [ 47.919252][ T33] name failslab, interval 1, probability 10, space 0, times 83 [ 47.926075][ C0] Call Trace: [ 47.926083][ C0] [ 47.926089][ C0] __dump_stack+0x21/0x30 [ 47.926109][ C0] dump_stack_lvl+0x110/0x170 [ 47.956630][ C0] ? show_regs_print_info+0x20/0x20 [ 47.961923][ C0] dump_stack+0x15/0x20 [ 47.966611][ C0] should_fail+0x3ab/0x500 [ 47.971069][ C0] ? ndisc_send_rs+0x310/0x960 [ 47.976552][ C0] __should_failslab+0xa4/0xe0 [ 47.981321][ C0] should_failslab+0x9/0x20 [ 47.985905][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 47.990967][ C0] ? ndisc_send_rs+0x310/0x960 [ 47.995817][ C0] ? ndisc_send_rs+0x310/0x960 [ 48.000573][ C0] __kmalloc_track_caller+0x6c/0x2c0 [ 48.005954][ C0] ? ndisc_send_rs+0x310/0x960 [ 48.011095][ C0] ? ndisc_send_rs+0x310/0x960 [ 48.016036][ C0] __alloc_skb+0x210/0x730 [ 48.020454][ C0] ndisc_send_rs+0x310/0x960 [ 48.025218][ C0] addrconf_rs_timer+0x35a/0x600 [ 48.030234][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 48.036293][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 48.042392][ C0] call_timer_fn+0x38/0x290 [ 48.047074][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 48.053304][ C0] __run_timers+0x637/0x9a0 [ 48.057808][ C0] ? calc_index+0x200/0x200 [ 48.062391][ C0] ? sched_clock_cpu+0x18/0x3d0 [ 48.068478][ C0] run_timer_softirq+0x6a/0xf0 [ 48.073540][ C0] handle_softirqs+0x250/0x560 [ 48.078516][ C0] ? irqtime_account_irq+0xbe/0x390 [ 48.084075][ C0] __irq_exit_rcu+0x52/0xf0 [ 48.088673][ C0] irq_exit_rcu+0x9/0x10 [ 48.093015][ C0] sysvec_apic_timer_interrupt+0xa9/0xc0 [ 48.099344][ C0] [ 48.102270][ C0] [ 48.105207][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 48.111183][ C0] RIP: 0010:preempt_schedule_irq+0xa5/0x120 [ 48.117523][ C0] Code: 44 24 20 00 02 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 4d bf 01 00 00 00 e8 11 4d 95 fc fb bf 01 00 00 00 76 e4 ff ff fa bf 01 00 00 00 e8 ab 4e 95 fc 65 48 8b 1d 13 f7 [ 48.138567][ C0] RSP: 0018:ffffc90000027660 EFLAGS: 00000246 [ 48.145687][ C0] RAX: 1ffff1102004c3ce RBX: ffffc90000027738 RCX: ffffffff870cbf00 [ 48.154420][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 [ 48.163024][ C0] RBP: ffffc900000276e8 R08: ffff8881002613c7 R09: 1ffff1102004c278 [ 48.171837][ C0] R10: dffffc0000000000 R11: ffffed102004c279 R12: 0000000000000000 [ 48.181033][ C0] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000004ecc [ 48.190049][ C0] ? __cond_resched+0xd0/0xd0 [ 48.194739][ C0] irqentry_exit_cond_resched+0x29/0x30 [ 48.200283][ C0] irqentry_exit+0x37/0x40 [ 48.204690][ C0] sysvec_reschedule_ipi+0x78/0x80 [ 48.209807][ C0] asm_sysvec_reschedule_ipi+0x1b/0x20 [ 48.215270][ C0] RIP: 0010:dump_stack_lvl+0x144/0x170 [ 48.221821][ C0] Code: e6 00 02 00 00 31 ff e8 3a 97 be fc 49 81 e5 00 02 00 00 75 07 e8 ec 92 be fc eb 06 e8 e5 92 be fc fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 44 24 40 [ 48.242125][ C0] RSP: 0018:ffffc900000277e0 EFLAGS: 00000293 [ 48.248470][ C0] RAX: ffffffff84ab23fb RBX: ffffffff8564bda0 RCX: ffff8881002613c0 [ 48.256873][ C0] RDX: 0000000000000000 RSI: 0000000000000200 RDI: 0000000000000000 [ 48.265332][ C0] RBP: ffffc90000027880 R08: 0000000000000003 R09: 0000000000000004 [ 48.274188][ C0] R10: dffffc0000000000 R11: fffffbfff0ce23f0 R12: dffffc0000000000 [ 48.282613][ C0] R13: 0000000000000200 R14: dffffc0000000004 R15: 1ffff92000004efc [ 48.291627][ C0] ? dump_stack_lvl+0x13b/0x170 [ 48.297435][ C0] ? show_regs_print_info+0x20/0x20 [ 48.304940][ C0] ? prandom_u32+0x24d/0x290 [ 48.311607][ C0] dump_stack+0x15/0x20 [ 48.316476][ C0] should_fail+0x3ab/0x500 [ 48.322537][ C0] __should_failslab+0xa4/0xe0 [ 48.328695][ C0] should_failslab+0x9/0x20 [ 48.333608][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 48.338992][ C0] __kmalloc+0x6d/0x2c0 [ 48.343415][ C0] ? security_prepare_creds+0x4e/0x140 [ 48.349176][ C0] security_prepare_creds+0x4e/0x140 [ 48.355399][ C0] prepare_creds+0x428/0x610 [ 48.360005][ C0] copy_creds+0xe4/0x640 [ 48.364255][ C0] copy_process+0x7d5/0x3280 [ 48.369471][ C0] ? dequeue_task_fair+0x4a5/0x1e40 [ 48.374935][ C0] ? __pidfd_prepare+0x150/0x150 [ 48.380520][ C0] ? __switch_to+0x56c/0x1070 [ 48.385468][ C0] kernel_clone+0x233/0x960 [ 48.390024][ C0] ? create_io_thread+0x170/0x170 [ 48.395143][ C0] ? finish_task_switch+0x16b/0x790 [ 48.400359][ C0] ? kthread_blkcg+0xd0/0xd0 [ 48.405042][ C0] kernel_thread+0xfe/0x170 [ 48.409727][ C0] ? ptrace_event_pid+0x180/0x180 [ 48.415265][ C0] ? kthread_blkcg+0xd0/0xd0 [ 48.420345][ C0] ? _raw_spin_trylock_bh+0x150/0x150 [ 48.426008][ C0] ? __kasan_check_read+0x11/0x20 [ 48.431027][ C0] kthreadd+0x346/0x480 [ 48.435181][ C0] ? tokenize_frame_descr+0x93/0xc0 [ 48.440381][ C0] ? kthread_stop+0x3e0/0x3e0 [ 48.445252][ C0] ? _raw_spin_unlock_irq+0x4e/0x70 [ 48.450668][ C0] ? calculate_sigpending+0x7c/0x90 [ 48.456048][ C0] ? kthread_stop+0x3e0/0x3e0 [ 48.460995][ C0] ret_from_fork+0x1f/0x30 [ 48.466189][ C0] [ 48.469292][ T33] CPU: 1 PID: 33 Comm: writeback Not tainted syzkaller #0 [ 48.477003][ T33] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 48.488313][ T33] Workqueue: writeback wb_workfn (flush-8:0) [ 48.494330][ T33] Call Trace: [ 48.497709][ T33] [ 48.500630][ T33] __dump_stack+0x21/0x30 [ 48.505127][ T33] dump_stack_lvl+0x110/0x170 [ 48.509801][ T33] ? show_regs_print_info+0x20/0x20 [ 48.515033][ T33] ? prandom_u32+0x24d/0x290 [ 48.519631][ T33] dump_stack+0x15/0x20 [ 48.524139][ T33] should_fail+0x3ab/0x500 [ 48.528733][ T33] __should_failslab+0xa4/0xe0 [ 48.533663][ T33] should_failslab+0x9/0x20 [ 48.538436][ T33] slab_pre_alloc_hook+0x39/0xd0 [ 48.543374][ T33] ? mempool_alloc_slab+0x1d/0x30 [ 48.548388][ T33] kmem_cache_alloc+0x44/0x260 [ 48.553334][ T33] ? mempool_free+0x330/0x330 [ 48.558791][ T33] mempool_alloc_slab+0x1d/0x30 [ 48.563771][ T33] mempool_alloc+0x167/0x4c0 [ 48.569012][ T33] ? blk_put_request+0x20/0x20 [ 48.574490][ T33] ? fscrypt_mergeable_bio+0x1c6/0x670 [ 48.580143][ T33] ? mempool_resize+0x880/0x880 [ 48.586155][ T33] ? submit_bio+0x367/0x620 [ 48.591064][ T33] bio_alloc_bioset+0x22b/0x910 [ 48.596405][ T33] ext4_bio_write_page+0xf3b/0x1b40 [ 48.602187][ T33] mpage_submit_page+0x17d/0x220 [ 48.607206][ T33] ext4_writepages+0x19a3/0x30a0 [ 48.612495][ T33] ? ext4_readpage+0x220/0x220 [ 48.617451][ T33] ? __kasan_check_write+0x14/0x20 [ 48.622751][ T33] ? ext4_readpage+0x220/0x220 [ 48.627875][ T33] do_writepages+0x476/0x6d0 [ 48.632636][ T33] ? __writepage+0x130/0x130 [ 48.637997][ T33] ? __kasan_check_write+0x14/0x20 [ 48.643282][ T33] ? __kasan_check_write+0x14/0x20 [ 48.648489][ T33] ? _raw_spin_lock+0x94/0xf0 [ 48.655080][ T33] __writeback_single_inode+0xd9/0x9e0 [ 48.661884][ T33] ? wbc_attach_and_unlock_inode+0x194/0x5f0 [ 48.665488][ C0] FAULT_INJECTION: forcing a failure. [ 48.665488][ C0] name failslab, interval 1, probability 10, space 0, times 82 [ 48.668569][ T33] writeback_sb_inodes+0x9f3/0x1610 [ 48.688996][ T33] ? queue_io+0x4b0/0x4b0 [ 48.693728][ T33] ? down_read_trylock+0x317/0x630 [ 48.699666][ T33] __writeback_inodes_wb+0x127/0x400 [ 48.705184][ T33] writeback_inodes_wb+0x19d/0x240 [ 48.710485][ T33] ? trace_writeback_pages_written+0xf0/0xf0 [ 48.716547][ T33] ? kvm_sched_clock_read+0x18/0x40 [ 48.721833][ T33] ? kthread_data+0x50/0xc0 [ 48.726427][ T33] wb_workfn+0xea3/0xf30 [ 48.730758][ T33] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 48.737090][ T33] ? __set_cpus_allowed_ptr_locked+0x5cc/0x1020 [ 48.744185][ T33] ? inode_wait_for_writeback+0x220/0x220 [ 48.750218][ T33] ? __kasan_check_write+0x14/0x20 [ 48.756238][ T33] ? _raw_spin_lock+0x94/0xf0 [ 48.761574][ T33] ? _raw_spin_trylock_bh+0x150/0x150 [ 48.768577][ T33] ? _raw_spin_unlock+0x4d/0x70 [ 48.774138][ T33] process_one_work+0x6c8/0xbb0 [ 48.779480][ T33] rescuer_thread+0x73d/0xf80 [ 48.784195][ T33] ? rcu_free_pwq+0x30/0x30 [ 48.788805][ T33] ? __kasan_check_read+0x11/0x20 [ 48.794383][ T33] ? __kthread_parkme+0xab/0x1f0 [ 48.799629][ T33] kthread+0x3f5/0x4f0 [ 48.803914][ T33] ? rcu_free_pwq+0x30/0x30 [ 48.808604][ T33] ? kthread_blkcg+0xd0/0xd0 [ 48.813305][ T33] ret_from_fork+0x1f/0x30 [ 48.817804][ T33] [ 48.823644][ C0] CPU: 0 PID: 335 Comm: kworker/0:2 Not tainted syzkaller #0 [ 48.825675][ T45] FAULT_INJECTION: forcing a failure. [ 48.825675][ T45] name failslab, interval 1, probability 10, space 0, times 82 [ 48.831830][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 48.855687][ C0] Workqueue: mld mld_ifc_work [ 48.861286][ C0] Call Trace: [ 48.864827][ C0] [ 48.867807][ C0] __dump_stack+0x21/0x30 [ 48.873635][ C0] dump_stack_lvl+0x110/0x170 [ 48.878419][ C0] ? show_regs_print_info+0x20/0x20 [ 48.883880][ C0] dump_stack+0x15/0x20 [ 48.888207][ C0] should_fail+0x3ab/0x500 [ 48.892639][ C0] ? wg_packet_send_keepalive+0x62/0x1c0 [ 48.898270][ C0] __should_failslab+0xa4/0xe0 [ 48.903030][ C0] should_failslab+0x9/0x20 [ 48.907551][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 48.913891][ C0] ? wg_packet_send_keepalive+0x62/0x1c0 [ 48.919970][ C0] ? wg_packet_send_keepalive+0x62/0x1c0 [ 48.925618][ C0] __kmalloc_track_caller+0x6c/0x2c0 [ 48.930992][ C0] ? wg_packet_send_keepalive+0x62/0x1c0 [ 48.936813][ C0] ? wg_packet_send_keepalive+0x62/0x1c0 [ 48.942544][ C0] __alloc_skb+0x210/0x730 [ 48.947088][ C0] wg_packet_send_keepalive+0x62/0x1c0 [ 48.952874][ C0] ? wg_expired_send_keepalive+0x1f/0x1b0 [ 48.959306][ C0] ? wg_expired_retransmit_handshake+0x230/0x230 [ 48.966968][ C0] wg_expired_send_keepalive+0x2e/0x1b0 [ 48.972718][ C0] ? wg_expired_retransmit_handshake+0x230/0x230 [ 48.979412][ C0] call_timer_fn+0x38/0x290 [ 48.984963][ C0] ? wg_expired_retransmit_handshake+0x230/0x230 [ 48.991542][ C0] __run_timers+0x637/0x9a0 [ 48.996263][ C0] ? calc_index+0x200/0x200 [ 49.000760][ C0] ? sched_clock_cpu+0x18/0x3d0 [ 49.005694][ C0] run_timer_softirq+0x6a/0xf0 [ 49.010739][ C0] handle_softirqs+0x250/0x560 [ 49.015659][ C0] __irq_exit_rcu+0x52/0xf0 [ 49.020157][ C0] irq_exit_rcu+0x9/0x10 [ 49.024901][ C0] sysvec_apic_timer_interrupt+0xa9/0xc0 [ 49.031015][ C0] [ 49.033945][ C0] [ 49.037438][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 49.043615][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x36/0x60 [ 49.049789][ C0] Code: 90 b6 98 7e 65 8b 15 91 b6 98 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 5c 0b 00 00 00 74 2c 8b 91 38 0b 00 00 <83> fa 02 75 21 48 8b 91 40 0b 00 00 48 8b 32 48 8d 7e 01 8b 89 3c [ 49.070651][ C0] RSP: 0018:ffffc9000378f880 EFLAGS: 00000246 [ 49.077164][ C0] RAX: ffffffff8152422c RBX: ffffffff8564bda0 RCX: ffff88810d404f00 [ 49.086256][ C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff86711f80 [ 49.095863][ C0] RBP: ffffc9000378f880 R08: 0000000000000003 R09: 0000000000000004 [ 49.104413][ C0] R10: dffffc0000000000 R11: fffffbfff0ce23f0 R12: dffffc0000000000 [ 49.112917][ C0] R13: 0000000000000200 R14: dffffc0000000004 R15: 1ffff920006f1f14 [ 49.121231][ C0] ? __printk_wait_on_cpu_lock+0x2c/0x40 [ 49.126895][ C0] __printk_wait_on_cpu_lock+0x2c/0x40 [ 49.132492][ C0] dump_stack_lvl+0xce/0x170 [ 49.137630][ C0] ? show_regs_print_info+0x20/0x20 [ 49.143102][ C0] dump_stack+0x15/0x20 [ 49.147578][ C0] should_fail+0x3ab/0x500 [ 49.152193][ C0] __should_failslab+0xa4/0xe0 [ 49.157142][ C0] should_failslab+0x9/0x20 [ 49.162603][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 49.169564][ C0] ? __alloc_skb+0xe4/0x730 [ 49.175050][ C0] kmem_cache_alloc+0x44/0x260 [ 49.179871][ C0] __alloc_skb+0xe4/0x730 [ 49.184194][ C0] mld_newpack+0x143/0x9e0 [ 49.189129][ C0] ? mld_sendpack+0xba0/0xba0 [ 49.194008][ C0] ? ndisc_send_skb+0xcf0/0xcf0 [ 49.199073][ C0] ? mod_delayed_work_on+0xa8/0xe0 [ 49.204285][ C0] add_grec+0xee8/0x1340 [ 49.208615][ C0] ? wait_for_completion_killable_timeout+0x10/0x10 [ 49.215416][ C0] mld_ifc_work+0x728/0xc40 [ 49.220008][ C0] process_one_work+0x6c8/0xbb0 [ 49.225081][ C0] worker_thread+0xaa0/0x1250 [ 49.231174][ C0] ? __kasan_check_read+0x11/0x20 [ 49.236482][ C0] kthread+0x3f5/0x4f0 [ 49.242101][ C0] ? worker_clr_flags+0x190/0x190 [ 49.248064][ C0] ? kthread_blkcg+0xd0/0xd0 [ 49.255072][ C0] ret_from_fork+0x1f/0x30 [ 49.260069][ C0] [ 49.263984][ T45] CPU: 1 PID: 45 Comm: kworker/u4:2 Not tainted syzkaller #0 [ 49.273047][ T45] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 49.283377][ T45] Workqueue: netns cleanup_net [ 49.288861][ T45] Call Trace: [ 49.292427][ T45] [ 49.295522][ T45] __dump_stack+0x21/0x30 [ 49.300245][ T45] dump_stack_lvl+0x110/0x170 [ 49.305625][ T45] ? show_regs_print_info+0x20/0x20 [ 49.311179][ T45] ? prandom_u32+0x24d/0x290 [ 49.315774][ T45] dump_stack+0x15/0x20 [ 49.319916][ T45] should_fail+0x3ab/0x500 [ 49.324329][ T45] ? inet6_rt_notify+0x293/0x480 [ 49.329263][ T45] __should_failslab+0xa4/0xe0 [ 49.334018][ T45] should_failslab+0x9/0x20 [ 49.338505][ T45] slab_pre_alloc_hook+0x39/0xd0 [ 49.343516][ T45] ? inet6_rt_notify+0x293/0x480 [ 49.348625][ T45] ? inet6_rt_notify+0x293/0x480 [ 49.353659][ T45] __kmalloc_track_caller+0x6c/0x2c0 [ 49.359147][ T45] ? inet6_rt_notify+0x293/0x480 [ 49.364278][ T45] ? inet6_rt_notify+0x293/0x480 [ 49.369577][ T45] __alloc_skb+0x210/0x730 [ 49.375693][ T45] inet6_rt_notify+0x293/0x480 [ 49.380814][ T45] ? rt6_nh_dump_exceptions+0x6b0/0x6b0 [ 49.386463][ T45] fib6_del+0xb9e/0xf00 [ 49.390634][ T45] ? fib6_locate+0x520/0x520 [ 49.396009][ T45] ? stack_trace_save+0xf0/0xf0 [ 49.400866][ T45] ? arch_stack_walk+0x108/0x140 [ 49.405863][ T45] ? fib6_ifdown+0x2e8/0x4e0 [ 49.410446][ T45] fib6_clean_node+0x2a1/0x540 [ 49.415199][ T45] ? node_free_rcu+0x30/0x30 [ 49.419776][ T45] ? kasan_save_stack+0x49/0x60 [ 49.424626][ T45] ? kasan_save_stack+0x3a/0x60 [ 49.429468][ T45] ? __kasan_record_aux_stack+0xd2/0x100 [ 49.435090][ T45] ? kasan_record_aux_stack_noalloc+0xb/0x10 [ 49.441148][ T45] ? call_rcu+0x10b/0xf60 [ 49.445654][ T45] fib6_walk_continue+0x54b/0x740 [ 49.450846][ T45] fib6_walk+0x153/0x290 [ 49.455301][ T45] fib6_clean_all+0x1a1/0x270 [ 49.460057][ T45] ? rt6_sync_down_dev+0x140/0x140 [ 49.465450][ T45] ? fib6_del+0xf00/0xf00 [ 49.469970][ T45] ? node_free_rcu+0x30/0x30 [ 49.475081][ T45] ? rt6_sync_down_dev+0x140/0x140 [ 49.480538][ T45] ? __kasan_check_read+0x11/0x20 [ 49.485648][ T45] rt6_disable_ip+0x115/0x730 [ 49.490577][ T45] ? _raw_spin_lock+0xf0/0xf0 [ 49.495251][ T45] ? __kasan_check_write+0x14/0x20 [ 49.500731][ T45] ? _raw_spin_lock_irqsave+0xc2/0x130 [ 49.506182][ T45] ? fib6_ifdown+0x4e0/0x4e0 [ 49.510969][ T45] ? __kasan_check_read+0x11/0x20 [ 49.516109][ T45] addrconf_ifdown+0x144/0x1910 [ 49.521119][ T45] ? detach_if_pending+0xf5/0x300 [ 49.526218][ T45] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 49.532359][ T45] ? addrconf_cleanup+0x1c0/0x1c0 [ 49.537369][ T45] ? __kasan_check_write+0x14/0x20 [ 49.542465][ T45] ? mutex_unlock+0x8f/0x230 [ 49.547052][ T45] ? __mutex_lock_slowpath+0x10/0x10 [ 49.552506][ T45] ? macsec_notify+0x10d/0x4c0 [ 49.557362][ T45] ? nf_nat_masq_schedule+0x4d0/0x4d0 [ 49.562744][ T45] ? masq_device_event+0xd0/0xd0 [ 49.567667][ T45] addrconf_notify+0x3bd/0xe00 [ 49.572945][ T45] raw_notifier_call_chain+0x90/0x100 [ 49.578305][ T45] dev_close_many+0x325/0x4d0 [ 49.583400][ T45] ? __dev_open+0x500/0x500 [ 49.588277][ T45] ? _raw_spin_lock_irq+0x95/0xf0 [ 49.593667][ T45] ? __kasan_check_read+0x11/0x20 [ 49.598786][ T45] unregister_netdevice_many+0x477/0x1a00 [ 49.604597][ T45] ? wait_for_common+0x355/0x410 [ 49.609713][ T45] ? alloc_netdev_mqs+0xe20/0xe20 [ 49.614744][ T45] ? unregister_netdevice_queue+0x17c/0x320 [ 49.620649][ T45] ? list_netdevice+0x4c0/0x4c0 [ 49.625769][ T45] ip6gre_exit_batch_net+0x5ca/0x620 [ 49.631547][ T45] ? ip6gre_init_net+0x340/0x340 [ 49.636497][ T45] ? ip6gre_init_net+0x340/0x340 [ 49.641603][ T45] cleanup_net+0x605/0xae0 [ 49.646384][ T45] ? ops_init+0x470/0x470 [ 49.651905][ T45] process_one_work+0x6c8/0xbb0 [ 49.656974][ T45] worker_thread+0xaa0/0x1250 [ 49.662363][ T45] ? __kasan_check_read+0x11/0x20 [ 49.669362][ T45] kthread+0x3f5/0x4f0 [ 49.673559][ T45] ? worker_clr_flags+0x190/0x190 [ 49.679397][ T45] ? kthread_blkcg+0xd0/0xd0 [ 49.684987][ T45] ret_from_fork+0x1f/0x30 [ 49.689871][ T45] [ 49.693058][ T100] CPU: 0 PID: 100 Comm: udevd Not tainted syzkaller #0 [ 49.693175][ C1] FAULT_INJECTION: forcing a failure. [ 49.693175][ C1] name failslab, interval 1, probability 10, space 0, times 80 [ 49.700004][ T100] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 49.700016][ T100] Call Trace: [ 49.700021][ T100] [ 49.700028][ T100] __dump_stack+0x21/0x30 [ 49.735105][ T100] dump_stack_lvl+0x110/0x170 [ 49.740290][ T100] ? show_regs_print_info+0x20/0x20 [ 49.746339][ T100] dump_stack+0x15/0x20 [ 49.751068][ T100] should_fail+0x3ab/0x500 [ 49.755495][ T100] __should_failslab+0xa4/0xe0 [ 49.760546][ T100] should_failslab+0x9/0x20 [ 49.767376][ T100] slab_pre_alloc_hook+0x39/0xd0 [ 49.772691][ T100] ? getname_flags+0xba/0x510 [ 49.777974][ T100] kmem_cache_alloc+0x44/0x260 [ 49.783406][ T100] getname_flags+0xba/0x510 [ 49.788032][ T100] user_path_at_empty+0x2f/0x1c0 [ 49.793330][ T100] vfs_statx+0x109/0xa20 [ 49.798433][ T100] ? from_kgid_munged+0x193/0x6e0 [ 49.804536][ T100] ? vfs_fstatat+0x40/0x40 [ 49.808960][ T100] __se_sys_newfstatat+0x10e/0x3d0 [ 49.815287][ T100] ? __x64_sys_newfstatat+0xb0/0xb0 [ 49.821022][ T100] ? group_send_sig_info+0x1b6/0x410 [ 49.826839][ T100] ? kill_proc_info+0x6f/0x90 [ 49.832264][ T100] __x64_sys_newfstatat+0x9b/0xb0 [ 49.838614][ T100] x64_sys_call+0x2c1/0x9a0 [ 49.844569][ T100] do_syscall_64+0x4c/0xa0 [ 49.850337][ T100] ? clear_bhb_loop+0x50/0xa0 [ 49.856270][ T100] ? clear_bhb_loop+0x50/0xa0 [ 49.861221][ T100] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 49.869305][ T100] RIP: 0033:0x7f7efbfabb0a [ 49.874006][ T100] Code: 48 8b 15 f1 f2 0d 00 f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 41 89 ca b8 06 01 00 00 0f 05 <3d> 00 f0 ff ff 77 07 31 c0 c3 0f 1f 40 00 48 8b 15 b9 f2 0d 00 f7 [ 49.896777][ T100] RSP: 002b:00007ffd8b94d368 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 [ 49.906071][ T100] RAX: ffffffffffffffda RBX: 0000557d72088428 RCX: 00007f7efbfabb0a [ 49.916640][ T100] RDX: 00007ffd8b94d370 RSI: 0000557d72076ed3 RDI: 00000000ffffff9c [ 49.926321][ T100] RBP: 0000557d94221658 R08: 00063478c1c69200 R09: 0029f313a07e386f [ 49.935671][ T100] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 49.944848][ T100] R13: 00007ffd8b94d370 R14: 0000000000000000 R15: 00063478c1c69200 [ 49.953183][ T100] [ 49.956203][ C1] CPU: 1 PID: 45 Comm: kworker/u4:2 Not tainted syzkaller #0 [ 49.956280][ C0] FAULT_INJECTION: forcing a failure. [ 49.956280][ C0] name failslab, interval 1, probability 10, space 0, times 80 [ 49.964836][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 49.989720][ C1] Workqueue: netns cleanup_net [ 49.994764][ C1] Call Trace: [ 49.998674][ C1] [ 50.001900][ C1] __dump_stack+0x21/0x30 [ 50.006855][ C1] dump_stack_lvl+0x110/0x170 [ 50.011544][ C1] ? show_regs_print_info+0x20/0x20 [ 50.016739][ C1] dump_stack+0x15/0x20 [ 50.020888][ C1] should_fail+0x3ab/0x500 [ 50.025301][ C1] ? ndisc_send_rs+0x310/0x960 [ 50.030231][ C1] __should_failslab+0xa4/0xe0 [ 50.035004][ C1] should_failslab+0x9/0x20 [ 50.039496][ C1] slab_pre_alloc_hook+0x39/0xd0 [ 50.044633][ C1] ? ndisc_send_rs+0x310/0x960 [ 50.049394][ C1] ? ndisc_send_rs+0x310/0x960 [ 50.054857][ C1] __kmalloc_track_caller+0x6c/0x2c0 [ 50.060392][ C1] ? ndisc_send_rs+0x310/0x960 [ 50.065667][ C1] ? ndisc_send_rs+0x310/0x960 [ 50.071225][ C1] __alloc_skb+0x210/0x730 [ 50.075832][ C1] ndisc_send_rs+0x310/0x960 [ 50.080735][ C1] ? ndisc_send_rs+0x131/0x960 [ 50.085596][ C1] addrconf_rs_timer+0x35a/0x600 [ 50.090537][ C1] ? addrconf_disable_policy_idev+0x360/0x360 [ 50.097039][ C1] ? addrconf_disable_policy_idev+0x360/0x360 [ 50.103122][ C1] call_timer_fn+0x38/0x290 [ 50.107804][ C1] ? addrconf_disable_policy_idev+0x360/0x360 [ 50.114134][ C1] __run_timers+0x637/0x9a0 [ 50.118640][ C1] ? calc_index+0x200/0x200 [ 50.123223][ C1] ? hrtimer_interrupt+0x6b6/0x8c0 [ 50.128800][ C1] run_timer_softirq+0x6a/0xf0 [ 50.134031][ C1] handle_softirqs+0x250/0x560 [ 50.141325][ C1] __do_softirq+0xb/0xd [ 50.146402][ C1] do_softirq+0xdc/0x130 [ 50.151320][ C1] [ 50.154350][ C1] [ 50.157297][ C1] ? __local_bh_enable_ip+0x80/0x80 [ 50.163041][ C1] ? __local_bh_enable_ip+0x58/0x80 [ 50.169014][ C1] __local_bh_enable_ip+0x75/0x80 [ 50.174217][ C1] _raw_spin_unlock_bh+0x51/0x60 [ 50.179252][ C1] fib6_clean_all+0x1c9/0x270 [ 50.184015][ C1] ? rt6_sync_down_dev+0x140/0x140 [ 50.189233][ C1] ? fib6_del+0xf00/0xf00 [ 50.193571][ C1] ? node_free_rcu+0x30/0x30 [ 50.198238][ C1] ? rt6_sync_down_dev+0x140/0x140 [ 50.203348][ C1] ? __kasan_check_read+0x11/0x20 [ 50.208363][ C1] rt6_disable_ip+0x115/0x730 [ 50.213134][ C1] ? _raw_spin_lock+0xf0/0xf0 [ 50.217828][ C1] ? __kasan_check_write+0x14/0x20 [ 50.222939][ C1] ? _raw_spin_lock_irqsave+0xc2/0x130 [ 50.228451][ C1] ? fib6_ifdown+0x4e0/0x4e0 [ 50.233130][ C1] ? __kasan_check_read+0x11/0x20 [ 50.239682][ C1] addrconf_ifdown+0x144/0x1910 [ 50.244735][ C1] ? detach_if_pending+0xf5/0x300 [ 50.250154][ C1] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 50.255958][ C1] ? addrconf_cleanup+0x1c0/0x1c0 [ 50.261063][ C1] ? __kasan_check_write+0x14/0x20 [ 50.266274][ C1] ? mutex_unlock+0x8f/0x230 [ 50.270881][ C1] ? __mutex_lock_slowpath+0x10/0x10 [ 50.276333][ C1] ? macsec_notify+0x10d/0x4c0 [ 50.281372][ C1] ? nf_nat_masq_schedule+0x4d0/0x4d0 [ 50.286916][ C1] ? masq_device_event+0xd0/0xd0 [ 50.292220][ C1] addrconf_notify+0x3bd/0xe00 [ 50.296989][ C1] raw_notifier_call_chain+0x90/0x100 [ 50.302442][ C1] dev_close_many+0x325/0x4d0 [ 50.307109][ C1] ? __dev_open+0x500/0x500 [ 50.311702][ C1] ? _raw_spin_lock_irq+0x95/0xf0 [ 50.316722][ C1] ? __kasan_check_read+0x11/0x20 [ 50.321998][ C1] unregister_netdevice_many+0x477/0x1a00 [ 50.327803][ C1] ? wait_for_common+0x355/0x410 [ 50.332872][ C1] ? alloc_netdev_mqs+0xe20/0xe20 [ 50.337890][ C1] ? unregister_netdevice_queue+0x17c/0x320 [ 50.343786][ C1] ? list_netdevice+0x4c0/0x4c0 [ 50.348777][ C1] ip6gre_exit_batch_net+0x5ca/0x620 [ 50.354054][ C1] ? ip6gre_init_net+0x340/0x340 [ 50.358978][ C1] ? ip6gre_init_net+0x340/0x340 [ 50.363901][ C1] cleanup_net+0x605/0xae0 [ 50.368308][ C1] ? ops_init+0x470/0x470 [ 50.372801][ C1] process_one_work+0x6c8/0xbb0 [ 50.377841][ C1] worker_thread+0xaa0/0x1250 [ 50.382661][ C1] ? __kasan_check_read+0x11/0x20 [ 50.387827][ C1] kthread+0x3f5/0x4f0 [ 50.392053][ C1] ? worker_clr_flags+0x190/0x190 [ 50.397086][ C1] ? kthread_blkcg+0xd0/0xd0 [ 50.401670][ C1] ret_from_fork+0x1f/0x30 [ 50.406092][ C1] [ 50.409109][ C0] CPU: 0 PID: 100 Comm: udevd Not tainted syzkaller #0 [ 50.411499][ T63] FAULT_INJECTION: forcing a failure. [ 50.411499][ T63] name failslab, interval 1, probability 10, space 0, times 78 [ 50.416042][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 50.416054][ C0] Call Trace: [ 50.416060][ C0] [ 50.416065][ C0] __dump_stack+0x21/0x30 [ 50.416086][ C0] dump_stack_lvl+0x110/0x170 [ 50.429086][ T33] FAULT_INJECTION: forcing a failure. [ 50.429086][ T33] name failslab, interval 1, probability 10, space 0, times 78 [ 50.439108][ C0] ? show_regs_print_info+0x20/0x20 [ 50.439132][ C0] ? prandom_u32+0x24d/0x290 [ 50.477448][ C0] dump_stack+0x15/0x20 [ 50.481695][ C0] should_fail+0x3ab/0x500 [ 50.486114][ C0] __should_failslab+0xa4/0xe0 [ 50.491058][ C0] should_failslab+0x9/0x20 [ 50.495726][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 50.500744][ C0] ? dst_alloc+0x15c/0x1d0 [ 50.505239][ C0] kmem_cache_alloc+0x44/0x260 [ 50.510081][ C0] ? ipv6_sysctl_rtcache_flush+0x100/0x100 [ 50.516132][ C0] dst_alloc+0x15c/0x1d0 [ 50.520379][ C0] icmp6_dst_alloc+0xec/0x520 [ 50.525051][ C0] ? security_sk_classify_flow+0x7b/0x90 [ 50.530875][ C0] ? icmpv6_flow_init+0xd2/0x130 [ 50.535851][ C0] ndisc_send_skb+0x2a9/0xcf0 [ 50.540518][ C0] ? do_syscall_64+0x4c/0xa0 [ 50.545093][ C0] ? entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 50.551156][ C0] ? ndisc_alloc_skb+0x290/0x290 [ 50.556191][ C0] ? ndisc_send_rs+0x61f/0x960 [ 50.561022][ C0] ? memcpy+0x56/0x70 [ 50.565078][ C0] ndisc_send_rs+0x711/0x960 [ 50.569719][ C0] addrconf_rs_timer+0x35a/0x600 [ 50.574911][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 50.581026][ C0] ? _raw_spin_lock_irq+0x95/0xf0 [ 50.586656][ C0] ? _raw_spin_lock_irqsave+0x130/0x130 [ 50.592307][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 50.598477][ C0] call_timer_fn+0x38/0x290 [ 50.603019][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 50.609102][ C0] __run_timers+0x637/0x9a0 [ 50.613694][ C0] ? calc_index+0x200/0x200 [ 50.618187][ C0] ? sched_clock_cpu+0x18/0x3d0 [ 50.623027][ C0] run_timer_softirq+0x6a/0xf0 [ 50.627878][ C0] handle_softirqs+0x250/0x560 [ 50.632739][ C0] __irq_exit_rcu+0x52/0xf0 [ 50.637252][ C0] irq_exit_rcu+0x9/0x10 [ 50.641489][ C0] sysvec_apic_timer_interrupt+0xa9/0xc0 [ 50.647335][ C0] [ 50.650344][ C0] [ 50.653376][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 50.659347][ C0] RIP: 0010:dump_stack_lvl+0x144/0x170 [ 50.664825][ C0] Code: e6 00 02 00 00 31 ff e8 3a 97 be fc 49 81 e5 00 02 00 00 75 07 e8 ec 92 be fc eb 06 e8 e5 92 be fc fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 44 24 40 [ 50.684795][ C0] RSP: 0018:ffffc900009e7940 EFLAGS: 00000293 [ 50.690855][ C0] RAX: ffffffff84ab23fb RBX: ffffffff8564bda0 RCX: ffff88810dc713c0 [ 50.699339][ C0] RDX: 0000000000000000 RSI: 0000000000000200 RDI: 0000000000000000 [ 50.707385][ C0] RBP: ffffc900009e79d8 R08: 0000000000000003 R09: 0000000000000004 [ 50.715611][ C0] R10: dffffc0000000000 R11: fffffbfff0ce23f0 R12: dffffc0000000000 [ 50.724007][ C0] R13: 0000000000000200 R14: dffffc0000000004 R15: 1ffff9200013cf28 [ 50.732351][ C0] ? dump_stack_lvl+0x13b/0x170 [ 50.737213][ C0] ? show_regs_print_info+0x20/0x20 [ 50.742577][ C0] dump_stack+0x15/0x20 [ 50.746813][ C0] should_fail+0x3ab/0x500 [ 50.751396][ C0] __should_failslab+0xa4/0xe0 [ 50.756748][ C0] should_failslab+0x9/0x20 [ 50.761301][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 50.766531][ C0] ? getname_flags+0xba/0x510 [ 50.771466][ C0] kmem_cache_alloc+0x44/0x260 [ 50.776286][ C0] getname_flags+0xba/0x510 [ 50.780778][ C0] user_path_at_empty+0x2f/0x1c0 [ 50.785885][ C0] vfs_statx+0x109/0xa20 [ 50.790295][ C0] ? from_kgid_munged+0x193/0x6e0 [ 50.795578][ C0] ? vfs_fstatat+0x40/0x40 [ 50.800822][ C0] __se_sys_newfstatat+0x10e/0x3d0 [ 50.806024][ C0] ? __x64_sys_newfstatat+0xb0/0xb0 [ 50.811219][ C0] ? group_send_sig_info+0x1b6/0x410 [ 50.816498][ C0] ? kill_proc_info+0x6f/0x90 [ 50.821167][ C0] __x64_sys_newfstatat+0x9b/0xb0 [ 50.826183][ C0] x64_sys_call+0x2c1/0x9a0 [ 50.830677][ C0] do_syscall_64+0x4c/0xa0 [ 50.835083][ C0] ? clear_bhb_loop+0x50/0xa0 [ 50.839840][ C0] ? clear_bhb_loop+0x50/0xa0 [ 50.844511][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 50.850400][ C0] RIP: 0033:0x7f7efbfabb0a [ 50.854801][ C0] Code: 48 8b 15 f1 f2 0d 00 f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 41 89 ca b8 06 01 00 00 0f 05 <3d> 00 f0 ff ff 77 07 31 c0 c3 0f 1f 40 00 48 8b 15 b9 f2 0d 00 f7 [ 50.875018][ C0] RSP: 002b:00007ffd8b94d368 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 [ 50.883734][ C0] RAX: ffffffffffffffda RBX: 0000557d72088428 RCX: 00007f7efbfabb0a [ 50.892074][ C0] RDX: 00007ffd8b94d370 RSI: 0000557d72076ed3 RDI: 00000000ffffff9c [ 50.900037][ C0] RBP: 0000557d94221658 R08: 00063478c1c69200 R09: 0029f313a07e386f [ 50.908172][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 50.916153][ C0] R13: 00007ffd8b94d370 R14: 0000000000000000 R15: 00063478c1c69200 [ 50.924764][ C0] [ 50.927982][ T33] CPU: 1 PID: 33 Comm: writeback Not tainted syzkaller #0 [ 50.936345][ T33] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 50.949041][ T33] Workqueue: writeback wb_workfn (flush-8:0) [ 50.956149][ T89] FAULT_INJECTION: forcing a failure. [ 50.956149][ T89] name failslab, interval 1, probability 10, space 0, times 76 [ 50.956358][ T33] Call Trace: [ 50.956365][ T33] [ 50.978485][ T33] __dump_stack+0x21/0x30 [ 50.983206][ T33] dump_stack_lvl+0x110/0x170 [ 50.987986][ T33] ? show_regs_print_info+0x20/0x20 [ 50.993528][ T33] ? prandom_u32+0x24d/0x290 [ 50.998296][ T33] dump_stack+0x15/0x20 [ 51.002699][ T33] should_fail+0x3ab/0x500 [ 51.007104][ T33] __should_failslab+0xa4/0xe0 [ 51.011994][ T33] should_failslab+0x9/0x20 [ 51.016488][ T33] slab_pre_alloc_hook+0x39/0xd0 [ 51.021606][ T33] ? mempool_alloc_slab+0x1d/0x30 [ 51.027060][ T33] kmem_cache_alloc+0x44/0x260 [ 51.032021][ T33] ? mempool_free+0x330/0x330 [ 51.038485][ T33] mempool_alloc_slab+0x1d/0x30 [ 51.043847][ T33] mempool_alloc+0x167/0x4c0 [ 51.048726][ T33] ? memset+0x35/0x40 [ 51.052713][ T33] ? mempool_resize+0x880/0x880 [ 51.057743][ T33] ? __update_load_avg_cfs_rq+0xb1/0x2e0 [ 51.064205][ T33] bio_alloc_bioset+0x124/0x910 [ 51.070452][ T33] bio_split+0xb4/0x310 [ 51.075517][ T33] __blk_queue_split+0xf6f/0x15c0 [ 51.081425][ T33] ? blk_end_sync_rq+0x50/0x50 [ 51.086881][ T33] ? _raw_spin_lock_irqsave+0xc2/0x130 [ 51.092845][ T33] blk_mq_submit_bio+0x1cc/0x1900 [ 51.098877][ T33] ? ktime_get+0x12f/0x160 [ 51.103556][ T33] ? submit_bio_checks+0xb50/0x11e0 [ 51.110250][ T33] ? blk_mq_try_issue_list_directly+0x490/0x490 [ 51.119007][ T33] ? __submit_bio+0x900/0x900 [ 51.124257][ T33] ? __ext4_journal_stop+0xfe/0x1a0 [ 51.130089][ T33] ? ext4_writepages+0xf01/0x30a0 [ 51.136115][ T33] ? do_writepages+0x476/0x6d0 [ 51.142890][ T33] ? blk_try_enter_queue+0x165/0x350 [ 51.149276][ T33] __submit_bio+0x817/0x900 [ 51.154908][ T33] ? trace_raw_output_block_rq_remap+0x260/0x260 [ 51.163115][ T33] ? debug_smp_processor_id+0x17/0x20 [ 51.170113][ T33] submit_bio_noacct+0x6b7/0x800 [ 51.175462][ T33] ? __kasan_slab_free+0x11/0x20 [ 51.181048][ T33] ? slab_free_freelist_hook+0xc2/0x190 [ 51.187246][ T33] ? blk_put_request+0x20/0x20 [ 51.193875][ T33] ? memset+0x35/0x40 [ 51.197899][ T33] ? blkcg_set_ioprio+0x1f6/0x320 [ 51.203862][ T33] submit_bio+0x367/0x620 [ 51.208377][ T33] ? submit_bio_noacct+0x800/0x800 [ 51.214027][ T33] ext4_io_submit+0x15d/0x210 [ 51.220499][ T33] ext4_writepages+0xf83/0x30a0 [ 51.225980][ T33] ? ext4_readpage+0x220/0x220 [ 51.231499][ T33] ? __kasan_check_write+0x14/0x20 [ 51.237152][ T33] ? ext4_readpage+0x220/0x220 [ 51.242398][ T33] do_writepages+0x476/0x6d0 [ 51.247715][ T33] ? __writepage+0x130/0x130 [ 51.253056][ T33] ? __kasan_check_write+0x14/0x20 [ 51.259085][ T33] ? __kasan_check_write+0x14/0x20 [ 51.265629][ T33] ? _raw_spin_lock+0x94/0xf0 [ 51.271845][ T33] __writeback_single_inode+0xd9/0x9e0 [ 51.278946][ T33] ? wbc_attach_and_unlock_inode+0x194/0x5f0 [ 51.286719][ T33] writeback_sb_inodes+0x9f3/0x1610 [ 51.292811][ T33] ? queue_io+0x4b0/0x4b0 [ 51.298503][ T33] ? down_read_trylock+0x317/0x630 [ 51.307459][ T33] __writeback_inodes_wb+0x127/0x400 [ 51.316187][ T33] writeback_inodes_wb+0x19d/0x240 [ 51.321698][ T33] ? trace_writeback_pages_written+0xf0/0xf0 [ 51.328928][ T33] ? kvm_sched_clock_read+0x18/0x40 [ 51.335908][ T33] ? kthread_data+0x50/0xc0 [ 51.341221][ T33] wb_workfn+0xea3/0xf30 [ 51.346222][ T33] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 51.352651][ T33] ? __set_cpus_allowed_ptr_locked+0x5cc/0x1020 [ 51.358924][ T33] ? inode_wait_for_writeback+0x220/0x220 [ 51.364690][ T33] ? __kasan_check_write+0x14/0x20 [ 51.369823][ T33] ? _raw_spin_lock+0x94/0xf0 [ 51.374861][ T33] ? _raw_spin_trylock_bh+0x150/0x150 [ 51.380427][ T33] ? _raw_spin_unlock+0x4d/0x70 [ 51.385371][ T33] process_one_work+0x6c8/0xbb0 [ 51.390502][ T33] rescuer_thread+0x73d/0xf80 [ 51.395527][ T33] ? rcu_free_pwq+0x30/0x30 [ 51.400027][ T33] ? __kasan_check_read+0x11/0x20 [ 51.405124][ T33] ? __kthread_parkme+0xab/0x1f0 [ 51.410056][ T33] kthread+0x3f5/0x4f0 [ 51.414137][ T33] ? rcu_free_pwq+0x30/0x30 [ 51.418665][ T33] ? kthread_blkcg+0xd0/0xd0 [ 51.423431][ T33] ret_from_fork+0x1f/0x30 [ 51.427845][ T33] [ 51.430863][ T89] CPU: 0 PID: 89 Comm: klogd Not tainted syzkaller #0 [ 51.431257][ T33] FAULT_INJECTION: forcing a failure. [ 51.431257][ T33] name failslab, interval 1, probability 10, space 0, times 74 [ 51.437831][ T89] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 51.437843][ T89] Call Trace: [ 51.437847][ T89] [ 51.437853][ T89] __dump_stack+0x21/0x30 [ 51.474432][ T89] dump_stack_lvl+0x110/0x170 [ 51.479229][ T89] ? show_regs_print_info+0x20/0x20 [ 51.484853][ T89] ? prandom_u32+0x24d/0x290 [ 51.489636][ T89] dump_stack+0x15/0x20 [ 51.493872][ T89] should_fail+0x3ab/0x500 [ 51.498443][ T89] ? alloc_skb_with_frags+0xa8/0x620 [ 51.504038][ T89] __should_failslab+0xa4/0xe0 [ 51.509055][ T89] should_failslab+0x9/0x20 [ 51.513547][ T89] slab_pre_alloc_hook+0x39/0xd0 [ 51.518482][ T89] ? alloc_skb_with_frags+0xa8/0x620 [ 51.523781][ T89] ? alloc_skb_with_frags+0xa8/0x620 [ 51.529153][ T89] __kmalloc_track_caller+0x6c/0x2c0 [ 51.534705][ T89] ? alloc_skb_with_frags+0xa8/0x620 [ 51.540002][ T89] ? alloc_skb_with_frags+0xa8/0x620 [ 51.545447][ T89] __alloc_skb+0x210/0x730 [ 51.550120][ T89] alloc_skb_with_frags+0xa8/0x620 [ 51.555491][ T89] ? memcpy+0x56/0x70 [ 51.559752][ T89] sock_alloc_send_pskb+0x87f/0x9a0 [ 51.566173][ T89] ? sock_kzfree_s+0x60/0x60 [ 51.570950][ T89] ? __kasan_check_write+0x14/0x20 [ 51.576101][ T89] ? _raw_spin_lock+0x94/0xf0 [ 51.580879][ T89] ? _raw_spin_trylock_bh+0x150/0x150 [ 51.586339][ T89] unix_dgram_sendmsg+0x6f3/0x19b0 [ 51.591446][ T89] ? unix_dgram_poll+0x6c0/0x6c0 [ 51.596479][ T89] ? path_put+0x57/0x60 [ 51.600715][ T89] ? security_socket_sendmsg+0x82/0xa0 [ 51.606162][ T89] __sys_sendto+0x46d/0x620 [ 51.610815][ T89] ? __ia32_sys_getpeername+0x90/0x90 [ 51.616280][ T89] ? __kasan_check_write+0x14/0x20 [ 51.621490][ T89] __x64_sys_sendto+0xe5/0x100 [ 51.626244][ T89] x64_sys_call+0x178/0x9a0 [ 51.631652][ T89] do_syscall_64+0x4c/0xa0 [ 51.636584][ T89] ? clear_bhb_loop+0x50/0xa0 [ 51.641469][ T89] ? clear_bhb_loop+0x50/0xa0 [ 51.646408][ T89] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 51.652498][ T89] RIP: 0033:0x7fca11087407 [ 51.657005][ T89] Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 51.678390][ T89] RSP: 002b:00007ffe548605a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 51.687062][ T89] RAX: ffffffffffffffda RBX: 00007fca10f37c80 RCX: 00007fca11087407 [ 51.695115][ T89] RDX: 000000000000006f RSI: 00007ffe548606e0 RDI: 0000000000000003 [ 51.703161][ T89] RBP: 00007ffe54860b10 R08: 0000000000000000 R09: 0000000000000000 [ 51.711120][ T89] R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffe54860b28 [ 51.719371][ T89] R13: 00007ffe548606e0 R14: 0000000000000054 R15: 00007ffe548606e0 [ 51.727444][ T89] [ 51.730671][ T33] CPU: 1 PID: 33 Comm: writeback Not tainted syzkaller #0 [ 51.730885][ T45] FAULT_INJECTION: forcing a failure. [ 51.730885][ T45] name failslab, interval 1, probability 10, space 0, times 74 [ 51.737965][ T33] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 51.737979][ T33] Workqueue: writeback wb_workfn (flush-8:0) [ 51.767269][ T33] Call Trace: [ 51.770660][ T33] [ 51.773579][ T33] __dump_stack+0x21/0x30 [ 51.777900][ T33] dump_stack_lvl+0x110/0x170 [ 51.782738][ T33] ? show_regs_print_info+0x20/0x20 [ 51.788534][ T33] ? prandom_u32+0x24d/0x290 [ 51.793416][ T33] dump_stack+0x15/0x20 [ 51.797654][ T33] should_fail+0x3ab/0x500 [ 51.802077][ T33] __should_failslab+0xa4/0xe0 [ 51.806837][ T33] should_failslab+0x9/0x20 [ 51.811349][ T33] slab_pre_alloc_hook+0x39/0xd0 [ 51.818157][ T33] ? mempool_alloc_slab+0x1d/0x30 [ 51.823320][ T33] kmem_cache_alloc+0x44/0x260 [ 51.828164][ T33] ? mempool_free+0x330/0x330 [ 51.832924][ T33] mempool_alloc_slab+0x1d/0x30 [ 51.837760][ T33] mempool_alloc+0x167/0x4c0 [ 51.842460][ T33] ? mempool_resize+0x880/0x880 [ 51.847497][ T33] ? prb_read_valid+0x60/0x60 [ 51.852187][ T33] sg_pool_alloc+0xb0/0xe0 [ 51.856685][ T33] __sg_alloc_table+0x1c1/0x6d0 [ 51.861723][ T33] sg_alloc_table_chained+0x8b/0x1e0 [ 51.867063][ T33] ? sg_alloc_table_chained+0x1e0/0x1e0 [ 51.872710][ T33] scsi_alloc_sgtables+0x292/0x8a0 [ 51.878012][ T33] ? scsi_io_completion_action+0xce0/0xce0 [ 51.884089][ T33] sd_init_command+0x60e/0x2610 [ 51.889224][ T33] scsi_queue_rq+0x176e/0x31c0 [ 51.894732][ T33] blk_mq_dispatch_rq_list+0xa06/0x1c50 [ 51.900636][ T33] ? blk_mq_get_driver_tag+0x920/0x920 [ 51.906393][ T33] blk_mq_do_dispatch_sched+0xadf/0xc90 [ 51.912216][ T33] ? blk_mq_exit_sched+0x590/0x590 [ 51.917622][ T33] __blk_mq_sched_dispatch_requests+0x32c/0x410 [ 51.923871][ T33] ? blk_mq_sched_dispatch_requests+0x1c0/0x1c0 [ 51.930102][ T33] blk_mq_sched_dispatch_requests+0x102/0x1c0 [ 51.936162][ T33] __blk_mq_run_hw_queue+0xf3/0x170 [ 51.941519][ T33] __blk_mq_delay_run_hw_queue+0x17e/0x420 [ 51.947429][ T33] ? blk_mq_delay_run_hw_queue+0x30/0x30 [ 51.953058][ T33] ? sbitmap_any_bit_set+0x119/0x160 [ 51.958421][ T33] blk_mq_run_hw_queue+0x282/0x3a0 [ 51.964086][ T33] blk_mq_sched_insert_requests+0x1cd/0x340 [ 51.970444][ T33] blk_mq_flush_plug_list+0x4e2/0x6b0 [ 51.976353][ T33] ? blk_mq_insert_requests+0x340/0x340 [ 51.981956][ T33] ? dd_prepare_request+0xd/0x40 [ 51.986884][ T33] blk_flush_plug_list+0x404/0x450 [ 51.992086][ T33] ? blk_check_plugged+0x270/0x270 [ 51.997363][ T33] ? preempt_count_add+0x90/0x1b0 [ 52.002470][ T33] ? blk_account_io_start+0x2b8/0x2f0 [ 52.007863][ T33] blk_mq_submit_bio+0xb23/0x1900 [ 52.013081][ T33] ? ktime_get+0x12f/0x160 [ 52.017486][ T33] ? blk_mq_try_issue_list_directly+0x490/0x490 [ 52.023735][ T33] ? __submit_bio+0x900/0x900 [ 52.028577][ T33] ? __ext4_journal_stop+0xfe/0x1a0 [ 52.033945][ T33] ? ext4_writepages+0xf01/0x30a0 [ 52.039131][ T33] ? do_writepages+0x476/0x6d0 [ 52.044060][ T33] ? blk_try_enter_queue+0x165/0x350 [ 52.049340][ T33] __submit_bio+0x817/0x900 [ 52.053917][ T33] ? trace_raw_output_block_rq_remap+0x260/0x260 [ 52.060324][ T33] ? debug_smp_processor_id+0x17/0x20 [ 52.065777][ T33] submit_bio_noacct+0x73b/0x800 [ 52.070721][ T33] ? __kasan_slab_free+0x11/0x20 [ 52.075661][ T33] ? slab_free_freelist_hook+0xc2/0x190 [ 52.081212][ T33] ? blk_put_request+0x20/0x20 [ 52.085966][ T33] ? memset+0x35/0x40 [ 52.090117][ T33] ? blkcg_set_ioprio+0x1f6/0x320 [ 52.096684][ T33] submit_bio+0x367/0x620 [ 52.101044][ T33] ? submit_bio_noacct+0x800/0x800 [ 52.106148][ T33] ext4_io_submit+0x15d/0x210 [ 52.111163][ T33] ext4_writepages+0xf83/0x30a0 [ 52.116118][ T33] ? ext4_readpage+0x220/0x220 [ 52.120974][ T33] ? __kasan_check_write+0x14/0x20 [ 52.126094][ T33] ? ext4_readpage+0x220/0x220 [ 52.130859][ T33] do_writepages+0x476/0x6d0 [ 52.135465][ T33] ? __writepage+0x130/0x130 [ 52.140481][ T33] ? __kasan_check_write+0x14/0x20 [ 52.145697][ T33] ? __kasan_check_write+0x14/0x20 [ 52.151002][ T33] ? _raw_spin_lock+0x94/0xf0 [ 52.155770][ T33] __writeback_single_inode+0xd9/0x9e0 [ 52.161340][ T33] ? wbc_attach_and_unlock_inode+0x194/0x5f0 [ 52.167326][ T33] writeback_sb_inodes+0x9f3/0x1610 [ 52.172689][ T33] ? queue_io+0x4b0/0x4b0 [ 52.177095][ T33] ? down_read_trylock+0x317/0x630 [ 52.182308][ T33] __writeback_inodes_wb+0x127/0x400 [ 52.187776][ T33] writeback_inodes_wb+0x19d/0x240 [ 52.192904][ T33] ? trace_writeback_pages_written+0xf0/0xf0 [ 52.199156][ T33] ? kvm_sched_clock_read+0x18/0x40 [ 52.204362][ T33] ? kthread_data+0x50/0xc0 [ 52.208942][ T33] wb_workfn+0xea3/0xf30 [ 52.213177][ T33] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 52.219148][ T33] ? __set_cpus_allowed_ptr_locked+0x5cc/0x1020 [ 52.225469][ T33] ? inode_wait_for_writeback+0x220/0x220 [ 52.231183][ T33] ? __kasan_check_write+0x14/0x20 [ 52.236288][ T33] ? _raw_spin_lock+0x94/0xf0 [ 52.241300][ T33] ? _raw_spin_trylock_bh+0x150/0x150 [ 52.246664][ T33] ? _raw_spin_unlock+0x4d/0x70 [ 52.251681][ T33] process_one_work+0x6c8/0xbb0 [ 52.256615][ T33] rescuer_thread+0x73d/0xf80 [ 52.261385][ T33] ? rcu_free_pwq+0x30/0x30 [ 52.265879][ T33] ? __kasan_check_read+0x11/0x20 [ 52.271250][ T33] ? __kthread_parkme+0xab/0x1f0 [ 52.276263][ T33] kthread+0x3f5/0x4f0 [ 52.280328][ T33] ? rcu_free_pwq+0x30/0x30 [ 52.284914][ T33] ? kthread_blkcg+0xd0/0xd0 [ 52.289494][ T33] ret_from_fork+0x1f/0x30 [ 52.293995][ T33] [ 52.297004][ T45] CPU: 0 PID: 45 Comm: kworker/u4:2 Not tainted syzkaller #0 [ 52.297371][ T33] FAULT_INJECTION: forcing a failure. [ 52.297371][ T33] name failslab, interval 1, probability 10, space 0, times 73 [ 52.304371][ T45] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 52.304383][ T45] Workqueue: netns cleanup_net [ 52.304404][ T45] Call Trace: [ 52.304409][ T45] [ 52.304414][ T45] __dump_stack+0x21/0x30 [ 52.342774][ T45] dump_stack_lvl+0x110/0x170 [ 52.347735][ T45] ? show_regs_print_info+0x20/0x20 [ 52.352924][ T45] ? prandom_u32+0x24d/0x290 [ 52.357503][ T45] dump_stack+0x15/0x20 [ 52.361648][ T45] should_fail+0x3ab/0x500 [ 52.366052][ T45] ? inet6_rt_notify+0x293/0x480 [ 52.371150][ T45] __should_failslab+0xa4/0xe0 [ 52.375909][ T45] should_failslab+0x9/0x20 [ 52.380411][ T45] slab_pre_alloc_hook+0x39/0xd0 [ 52.385344][ T45] ? inet6_rt_notify+0x293/0x480 [ 52.390292][ T45] ? inet6_rt_notify+0x293/0x480 [ 52.395252][ T45] __kmalloc_track_caller+0x6c/0x2c0 [ 52.400625][ T45] ? inet6_rt_notify+0x293/0x480 [ 52.405563][ T45] ? inet6_rt_notify+0x293/0x480 [ 52.410837][ T45] __alloc_skb+0x210/0x730 [ 52.415247][ T45] inet6_rt_notify+0x293/0x480 [ 52.420003][ T45] ? rt6_nh_dump_exceptions+0x6b0/0x6b0 [ 52.425627][ T45] ? call_fib_notifiers+0xa0/0xc0 [ 52.430727][ T45] fib6_del+0xb9e/0xf00 [ 52.434870][ T45] ? __kasan_check_read+0x11/0x20 [ 52.439888][ T45] ? fib6_locate+0x520/0x520 [ 52.444462][ T45] ? update_rt_migration+0x3b0/0x3b0 [ 52.449747][ T45] ? _raw_spin_unlock+0x4d/0x70 [ 52.454673][ T45] ? update_rt_migration+0x3b0/0x3b0 [ 52.460039][ T45] ? fib6_ifdown+0x2e8/0x4e0 [ 52.464631][ T45] fib6_clean_node+0x2a1/0x540 [ 52.469652][ T45] ? node_free_rcu+0x30/0x30 [ 52.474322][ T45] ? __kasan_check_read+0x11/0x20 [ 52.479857][ T45] fib6_walk_continue+0x54b/0x740 [ 52.487856][ T45] fib6_walk+0x153/0x290 [ 52.492090][ T45] fib6_clean_all+0x1a1/0x270 [ 52.496754][ T45] ? rt6_sync_down_dev+0x140/0x140 [ 52.501963][ T45] ? fib6_del+0xf00/0xf00 [ 52.506324][ T45] ? node_free_rcu+0x30/0x30 [ 52.511099][ T45] ? rt6_sync_down_dev+0x140/0x140 [ 52.516626][ T45] ? __kasan_check_read+0x11/0x20 [ 52.521640][ T45] rt6_disable_ip+0x115/0x730 [ 52.526308][ T45] ? _raw_spin_lock+0xf0/0xf0 [ 52.530988][ T45] ? __kasan_check_write+0x14/0x20 [ 52.536259][ T45] ? _raw_spin_lock_irqsave+0xc2/0x130 [ 52.541794][ T45] ? fib6_ifdown+0x4e0/0x4e0 [ 52.546555][ T45] ? __kasan_check_read+0x11/0x20 [ 52.551573][ T45] addrconf_ifdown+0x144/0x1910 [ 52.556419][ T45] ? detach_if_pending+0xf5/0x300 [ 52.561519][ T45] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 52.567338][ T45] ? addrconf_cleanup+0x1c0/0x1c0 [ 52.572353][ T45] ? __kasan_check_write+0x14/0x20 [ 52.577453][ T45] ? mutex_unlock+0x8f/0x230 [ 52.582569][ T45] ? __mutex_lock_slowpath+0x10/0x10 [ 52.588035][ T45] ? macsec_notify+0x10d/0x4c0 [ 52.593050][ T45] ? nf_nat_masq_schedule+0x4d0/0x4d0 [ 52.598415][ T45] ? masq_device_event+0xd0/0xd0 [ 52.603363][ T45] addrconf_notify+0x3bd/0xe00 [ 52.608116][ T45] raw_notifier_call_chain+0x90/0x100 [ 52.613482][ T45] dev_close_many+0x325/0x4d0 [ 52.618244][ T45] ? __dev_open+0x500/0x500 [ 52.622728][ T45] ? _raw_spin_lock_irq+0x95/0xf0 [ 52.627913][ T45] ? __kasan_check_read+0x11/0x20 [ 52.632935][ T45] unregister_netdevice_many+0x477/0x1a00 [ 52.638942][ T45] ? wait_for_common+0x355/0x410 [ 52.644142][ T45] ? alloc_netdev_mqs+0xe20/0xe20 [ 52.649220][ T45] ? unregister_netdevice_queue+0x17c/0x320 [ 52.655655][ T45] ? list_netdevice+0x4c0/0x4c0 [ 52.660852][ T45] ip6gre_exit_batch_net+0x5ca/0x620 [ 52.666830][ T45] ? ip6gre_init_net+0x340/0x340 [ 52.671860][ T45] ? ip6gre_init_net+0x340/0x340 [ 52.676888][ T45] cleanup_net+0x605/0xae0 [ 52.681608][ T45] ? ops_init+0x470/0x470 [ 52.685950][ T45] process_one_work+0x6c8/0xbb0 [ 52.690891][ T45] worker_thread+0xaa0/0x1250 [ 52.695660][ T45] ? __kasan_check_read+0x11/0x20 [ 52.700768][ T45] kthread+0x3f5/0x4f0 [ 52.704926][ T45] ? worker_clr_flags+0x190/0x190 [ 52.710038][ T45] ? kthread_blkcg+0xd0/0xd0 [ 52.714733][ T45] ret_from_fork+0x1f/0x30 [ 52.719241][ T45] [ 52.722450][ T33] CPU: 1 PID: 33 Comm: writeback Not tainted syzkaller #0 [ 52.730007][ T33] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 52.740345][ T33] Workqueue: writeback wb_workfn (flush-8:0) [ 52.746828][ T33] Call Trace: [ 52.750191][ T33] [ 52.753203][ T33] __dump_stack+0x21/0x30 [ 52.757980][ T33] dump_stack_lvl+0x110/0x170 [ 52.763431][ T33] ? show_regs_print_info+0x20/0x20 [ 52.769005][ T33] ? prandom_u32+0x24d/0x290 [ 52.773809][ T33] dump_stack+0x15/0x20 [ 52.778144][ T33] should_fail+0x3ab/0x500 [ 52.782646][ T33] __should_failslab+0xa4/0xe0 [ 52.788601][ T33] should_failslab+0x9/0x20 [ 52.794971][ T33] slab_pre_alloc_hook+0x39/0xd0 [ 52.800328][ T33] ? mempool_alloc_slab+0x1d/0x30 [ 52.806061][ T33] kmem_cache_alloc+0x44/0x260 [ 52.810937][ T33] ? mempool_free+0x330/0x330 [ 52.816727][ T33] mempool_alloc_slab+0x1d/0x30 [ 52.821942][ T33] mempool_alloc+0x167/0x4c0 [ 52.827001][ T33] ? blk_mq_delay_run_hw_queue+0x30/0x30 [ 52.833004][ T33] ? mempool_resize+0x880/0x880 [ 52.837849][ T33] ? blk_mq_sched_insert_requests+0x216/0x340 [ 52.844532][ T33] bio_alloc_bioset+0x124/0x910 [ 52.849990][ T33] bio_split+0xb4/0x310 [ 52.854228][ T33] __blk_queue_split+0xf6f/0x15c0 [ 52.861345][ T33] ? blk_end_sync_rq+0x50/0x50 [ 52.866482][ T33] blk_mq_submit_bio+0x1cc/0x1900 [ 52.872263][ T33] ? ktime_get+0x12f/0x160 [ 52.876789][ T33] ? submit_bio_checks+0xb77/0x11e0 [ 52.883315][ T33] ? blk_mq_try_issue_list_directly+0x490/0x490 [ 52.890583][ T33] ? __submit_bio+0x900/0x900 [ 52.895470][ T33] ? __ext4_journal_stop+0xfe/0x1a0 [ 52.901668][ T33] ? ext4_writepages+0xf01/0x30a0 [ 52.906796][ T33] ? do_writepages+0x476/0x6d0 [ 52.912114][ T33] ? blk_try_enter_queue+0x165/0x350 [ 52.917501][ T33] __submit_bio+0x817/0x900 [ 52.922184][ T33] ? trace_raw_output_block_rq_remap+0x260/0x260 [ 52.928517][ T33] ? debug_smp_processor_id+0x17/0x20 [ 52.933976][ T33] submit_bio_noacct+0x73b/0x800 [ 52.939119][ T33] ? __kasan_slab_free+0x11/0x20 [ 52.947616][ T33] ? slab_free_freelist_hook+0xc2/0x190 [ 52.954584][ T33] ? blk_put_request+0x20/0x20 [ 52.962099][ T33] ? memset+0x35/0x40 [ 52.966492][ T33] ? blkcg_set_ioprio+0x1f6/0x320 [ 52.972577][ T33] submit_bio+0x367/0x620 [ 52.977860][ T33] ? submit_bio_noacct+0x800/0x800 [ 52.983931][ T33] ext4_io_submit+0x15d/0x210 [ 52.989700][ T33] ext4_writepages+0xf83/0x30a0 [ 52.995617][ T33] ? ext4_readpage+0x220/0x220 [ 53.001375][ T33] ? __kasan_check_write+0x14/0x20 [ 53.007990][ T33] ? ext4_readpage+0x220/0x220 [ 53.013556][ T33] do_writepages+0x476/0x6d0 [ 53.018149][ T33] ? __writepage+0x130/0x130 [ 53.022998][ T33] ? __kasan_check_write+0x14/0x20 [ 53.028413][ T33] ? __kasan_check_write+0x14/0x20 [ 53.033531][ T33] ? _raw_spin_lock+0x94/0xf0 [ 53.038213][ T33] __writeback_single_inode+0xd9/0x9e0 [ 53.043838][ T33] ? wbc_attach_and_unlock_inode+0x194/0x5f0 [ 53.050255][ T33] writeback_sb_inodes+0x9f3/0x1610 [ 53.056635][ T33] ? queue_io+0x4b0/0x4b0 [ 53.061236][ T33] ? down_read_trylock+0x317/0x630 [ 53.070297][ T33] __writeback_inodes_wb+0x127/0x400 [ 53.076025][ T33] writeback_inodes_wb+0x19d/0x240 [ 53.081320][ T33] ? trace_writeback_pages_written+0xf0/0xf0 [ 53.087504][ T33] ? kvm_sched_clock_read+0x18/0x40 [ 53.093053][ T33] ? kthread_data+0x50/0xc0 [ 53.097919][ T33] wb_workfn+0xea3/0xf30 [ 53.103366][ T33] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 53.109475][ T33] ? __set_cpus_allowed_ptr_locked+0x5cc/0x1020 [ 53.115765][ T33] ? inode_wait_for_writeback+0x220/0x220 [ 53.121490][ T33] ? __kasan_check_write+0x14/0x20 [ 53.127966][ T33] ? _raw_spin_lock+0x94/0xf0 [ 53.133014][ T33] ? _raw_spin_trylock_bh+0x150/0x150 [ 53.138377][ T33] ? _raw_spin_unlock+0x4d/0x70 [ 53.143245][ T33] process_one_work+0x6c8/0xbb0 [ 53.148135][ T33] rescuer_thread+0x73d/0xf80 [ 53.153691][ T33] ? rcu_free_pwq+0x30/0x30 [ 53.158365][ T33] ? __kasan_check_read+0x11/0x20 [ 53.163673][ T33] ? __kthread_parkme+0xab/0x1f0 [ 53.169272][ T33] kthread+0x3f5/0x4f0 [ 53.173881][ T33] ? rcu_free_pwq+0x30/0x30 [ 53.178389][ T33] ? kthread_blkcg+0xd0/0xd0 [ 53.183661][ T33] ret_from_fork+0x1f/0x30 [ 53.188070][ T33] [ 53.191309][ T368] CPU: 0 PID: 368 Comm: syz-executor Not tainted syzkaller #0 [ 53.191556][ T33] FAULT_INJECTION: forcing a failure. [ 53.191556][ T33] name failslab, interval 1, probability 10, space 0, times 70 [ 53.198886][ T368] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 53.198897][ T368] Call Trace: [ 53.198901][ T368] [ 53.198908][ T368] __dump_stack+0x21/0x30 [ 53.198925][ T368] dump_stack_lvl+0x110/0x170 [ 53.198938][ T368] ? show_regs_print_info+0x20/0x20 [ 53.198954][ T368] dump_stack+0x15/0x20 [ 53.198965][ T368] should_fail+0x3ab/0x500 [ 53.198988][ T368] __should_failslab+0xa4/0xe0 [ 53.259487][ T368] should_failslab+0x9/0x20 [ 53.264577][ T368] slab_pre_alloc_hook+0x39/0xd0 [ 53.269739][ T368] ? getname_flags+0xba/0x510 [ 53.274412][ T368] kmem_cache_alloc+0x44/0x260 [ 53.279344][ T368] getname_flags+0xba/0x510 [ 53.283838][ T368] user_path_at_empty+0x2f/0x1c0 [ 53.288762][ T368] vfs_statx+0x109/0xa20 [ 53.292996][ T368] ? selinux_capset+0xf0/0xf0 [ 53.297777][ T368] ? vfs_fstatat+0x40/0x40 [ 53.302377][ T368] __se_sys_newfstatat+0x10e/0x3d0 [ 53.307949][ T368] ? __x64_sys_newfstatat+0xb0/0xb0 [ 53.313152][ T368] ? path_umount+0x345/0xfa0 [ 53.318013][ T368] ? __kasan_slab_free+0x11/0x20 [ 53.323390][ T368] ? user_path_at_empty+0x162/0x1c0 [ 53.329897][ T368] ? __x64_sys_umount+0x12d/0x170 [ 53.336064][ T368] __x64_sys_newfstatat+0x9b/0xb0 [ 53.341297][ T368] x64_sys_call+0x2c1/0x9a0 [ 53.346080][ T368] do_syscall_64+0x4c/0xa0 [ 53.351134][ T368] ? clear_bhb_loop+0x50/0xa0 [ 53.356039][ T368] ? clear_bhb_loop+0x50/0xa0 [ 53.361110][ T368] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 53.367619][ T368] RIP: 0033:0x7fc8afa8f4da [ 53.372214][ T368] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 41 89 ca b8 06 01 00 00 0f 05 <3d> 00 f0 ff ff 77 07 31 c0 c3 0f 1f 40 00 48 c7 c2 e8 ff ff ff f7 [ 53.392248][ T368] RSP: 002b:00007ffdfc0b0d38 EFLAGS: 00000286 ORIG_RAX: 0000000000000106 [ 53.400665][ T368] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc8afa8f4da [ 53.408816][ T368] RDX: 00007ffdfc0b0d60 RSI: 00007ffdfc0b0df0 RDI: 00000000ffffff9c [ 53.416967][ T368] RBP: 00007ffdfc0b0df0 R08: 00007ffdfc0b1df0 R09: 00000000ffffffff [ 53.425809][ T368] R10: 0000000000000100 R11: 0000000000000286 R12: 00007ffdfc0b1e80 [ 53.434646][ T368] R13: 00007fc8afb2630a R14: 00000000000095f9 R15: 00007ffdfc0b1ec0 [ 53.442694][ T368] [ 53.445779][ T33] CPU: 1 PID: 33 Comm: writeback Not tainted syzkaller #0 [ 53.452889][ T33] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 53.463478][ T33] Workqueue: writeback wb_workfn (flush-8:0) [ 53.469976][ T33] Call Trace: [ 53.473515][ T33] [ 53.476434][ T33] __dump_stack+0x21/0x30 [ 53.480784][ T33] dump_stack_lvl+0x110/0x170 [ 53.485460][ T33] ? show_regs_print_info+0x20/0x20 [ 53.490732][ T33] ? prandom_u32+0x24d/0x290 [ 53.495495][ T33] dump_stack+0x15/0x20 [ 53.499826][ T33] should_fail+0x3ab/0x500 [ 53.504226][ T33] __should_failslab+0xa4/0xe0 [ 53.509078][ T33] should_failslab+0x9/0x20 [ 53.513741][ T33] slab_pre_alloc_hook+0x39/0xd0 [ 53.518668][ T33] ? mempool_alloc_slab+0x1d/0x30 [ 53.523852][ T33] kmem_cache_alloc+0x44/0x260 [ 53.528609][ T33] ? mempool_free+0x330/0x330 [ 53.533359][ T33] mempool_alloc_slab+0x1d/0x30 [ 53.538798][ T33] mempool_alloc+0x167/0x4c0 [ 53.543371][ T33] ? virtqueue_add+0x3541/0x4210 [ 53.548381][ T33] ? mempool_resize+0x880/0x880 [ 53.554909][ T33] sg_pool_alloc+0xb0/0xe0 [ 53.560181][ T33] __sg_alloc_table+0x1c1/0x6d0 [ 53.565580][ T33] sg_alloc_table_chained+0x8b/0x1e0 [ 53.571338][ T33] ? sg_alloc_table_chained+0x1e0/0x1e0 [ 53.577628][ T33] scsi_alloc_sgtables+0x292/0x8a0 [ 53.583222][ T33] ? scsi_io_completion_action+0xce0/0xce0 [ 53.589312][ T33] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 53.595468][ T33] sd_init_command+0x60e/0x2610 [ 53.600327][ T33] scsi_queue_rq+0x176e/0x31c0 [ 53.605177][ T33] blk_mq_dispatch_rq_list+0xa06/0x1c50 [ 53.611358][ T33] ? blk_mq_get_driver_tag+0x920/0x920 [ 53.617100][ T33] blk_mq_do_dispatch_sched+0xadf/0xc90 [ 53.622954][ T33] ? blk_mq_exit_sched+0x590/0x590 [ 53.629814][ T33] ? dump_stack_lvl+0x144/0x170 [ 53.635430][ T33] ? show_regs_print_info+0x20/0x20 [ 53.641189][ T33] ? prandom_u32+0x24d/0x290 [ 53.646088][ T33] __blk_mq_sched_dispatch_requests+0x32c/0x410 [ 53.654214][ T33] ? __kasan_check_write+0x14/0x20 [ 53.660127][ T33] ? blk_mq_sched_dispatch_requests+0x1c0/0x1c0 [ 53.667601][ T33] blk_mq_sched_dispatch_requests+0x102/0x1c0 [ 53.673704][ T33] __blk_mq_run_hw_queue+0xf3/0x170 [ 53.678978][ T33] __blk_mq_delay_run_hw_queue+0x17e/0x420 [ 53.684800][ T33] ? blk_mq_delay_run_hw_queue+0x30/0x30 [ 53.690787][ T33] ? sbitmap_any_bit_set+0x119/0x160 [ 53.696056][ T33] blk_mq_run_hw_queue+0x282/0x3a0 [ 53.701162][ T33] blk_mq_sched_insert_requests+0x1cd/0x340 [ 53.707157][ T33] blk_mq_flush_plug_list+0x4e2/0x6b0 [ 53.712693][ T33] ? blk_mq_insert_requests+0x340/0x340 [ 53.718396][ T33] ? dd_prepare_request+0xd/0x40 [ 53.723314][ T33] blk_flush_plug_list+0x404/0x450 [ 53.728498][ T33] ? blk_check_plugged+0x270/0x270 [ 53.733682][ T33] ? preempt_count_add+0x90/0x1b0 [ 53.738694][ T33] ? blk_account_io_start+0x2b8/0x2f0 [ 53.744049][ T33] blk_mq_submit_bio+0xb23/0x1900 [ 53.749144][ T33] ? ktime_get+0x12f/0x160 [ 53.753543][ T33] ? blk_mq_try_issue_list_directly+0x490/0x490 [ 53.759877][ T33] ? __submit_bio+0x900/0x900 [ 53.764578][ T33] ? __ext4_journal_stop+0xfe/0x1a0 [ 53.769756][ T33] ? ext4_writepages+0xf01/0x30a0 [ 53.774763][ T33] ? do_writepages+0x476/0x6d0 [ 53.779960][ T33] ? blk_try_enter_queue+0x165/0x350 [ 53.785313][ T33] __submit_bio+0x817/0x900 [ 53.789805][ T33] ? trace_raw_output_block_rq_remap+0x260/0x260 [ 53.795645][ C0] FAULT_INJECTION: forcing a failure. [ 53.795645][ C0] name failslab, interval 1, probability 10, space 0, times 70 [ 53.797211][ T33] ? debug_smp_processor_id+0x17/0x20 [ 53.815402][ T33] submit_bio_noacct+0x73b/0x800 [ 53.820390][ T33] ? __kasan_slab_free+0x11/0x20 [ 53.825318][ T33] ? slab_free_freelist_hook+0xc2/0x190 [ 53.830881][ T33] ? blk_put_request+0x20/0x20 [ 53.835634][ T33] ? memset+0x35/0x40 [ 53.839692][ T33] ? blkcg_set_ioprio+0x1f6/0x320 [ 53.844702][ T33] submit_bio+0x367/0x620 [ 53.849025][ T33] ? submit_bio_noacct+0x800/0x800 [ 53.854303][ T33] ext4_io_submit+0x15d/0x210 [ 53.859081][ T33] ext4_writepages+0xf83/0x30a0 [ 53.864120][ T33] ? ext4_readpage+0x220/0x220 [ 53.871534][ T33] ? __kasan_check_write+0x14/0x20 [ 53.877133][ T33] ? ext4_readpage+0x220/0x220 [ 53.882197][ T33] do_writepages+0x476/0x6d0 [ 53.886991][ T33] ? __writepage+0x130/0x130 [ 53.891594][ T33] ? __kasan_check_write+0x14/0x20 [ 53.897605][ T33] ? __kasan_check_write+0x14/0x20 [ 53.903093][ T33] ? _raw_spin_lock+0x94/0xf0 [ 53.907782][ T33] __writeback_single_inode+0xd9/0x9e0 [ 53.914990][ T33] ? wbc_attach_and_unlock_inode+0x194/0x5f0 [ 53.921135][ T33] writeback_sb_inodes+0x9f3/0x1610 [ 53.927176][ T33] ? queue_io+0x4b0/0x4b0 [ 53.932335][ T33] ? down_read_trylock+0x317/0x630 [ 53.937548][ T33] __writeback_inodes_wb+0x127/0x400 [ 53.943353][ T33] writeback_inodes_wb+0x19d/0x240 [ 53.948633][ T33] ? trace_writeback_pages_written+0xf0/0xf0 [ 53.955053][ T33] ? kvm_sched_clock_read+0x18/0x40 [ 53.960531][ T33] ? kthread_data+0x50/0xc0 [ 53.965227][ T33] wb_workfn+0xea3/0xf30 [ 53.969601][ T33] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 53.975581][ T33] ? __set_cpus_allowed_ptr_locked+0x5cc/0x1020 [ 53.982251][ T33] ? inode_wait_for_writeback+0x220/0x220 [ 53.988447][ T33] ? __kasan_check_write+0x14/0x20 [ 53.993576][ T33] ? _raw_spin_lock+0x94/0xf0 [ 53.998611][ T33] ? _raw_spin_trylock_bh+0x150/0x150 [ 54.004155][ T33] ? _raw_spin_unlock+0x4d/0x70 [ 54.009093][ T33] process_one_work+0x6c8/0xbb0 [ 54.014026][ T33] rescuer_thread+0x73d/0xf80 [ 54.018706][ T33] ? rcu_free_pwq+0x30/0x30 [ 54.023558][ T33] ? __kasan_check_read+0x11/0x20 [ 54.028576][ T33] ? __kthread_parkme+0xab/0x1f0 [ 54.033764][ T33] kthread+0x3f5/0x4f0 [ 54.038028][ T33] ? rcu_free_pwq+0x30/0x30 [ 54.043180][ T33] ? kthread_blkcg+0xd0/0xd0 [ 54.047900][ T33] ret_from_fork+0x1f/0x30 [ 54.052780][ T33] [ 54.055880][ C0] CPU: 0 PID: 8 Comm: kworker/u4:0 Not tainted syzkaller #0 [ 54.057733][ T89] FAULT_INJECTION: forcing a failure. [ 54.057733][ T89] name failslab, interval 1, probability 10, space 0, times 67 [ 54.063353][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 54.063367][ C0] Workqueue: events_unbound toggle_allocation_gate [ 54.063390][ C0] Call Trace: [ 54.063395][ C0] [ 54.063399][ C0] __dump_stack+0x21/0x30 [ 54.063418][ C0] dump_stack_lvl+0x110/0x170 [ 54.110974][ C0] ? show_regs_print_info+0x20/0x20 [ 54.116260][ C0] ? prandom_u32+0x24d/0x290 [ 54.120954][ C0] dump_stack+0x15/0x20 [ 54.125383][ C0] should_fail+0x3ab/0x500 [ 54.129979][ C0] ? tcp_write_wakeup+0x4c3/0xed0 [ 54.135020][ C0] __should_failslab+0xa4/0xe0 [ 54.140042][ C0] should_failslab+0x9/0x20 [ 54.144641][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 54.149757][ C0] ? tcp_write_wakeup+0x4c3/0xed0 [ 54.154864][ C0] ? tcp_write_wakeup+0x4c3/0xed0 [ 54.160170][ C0] __kmalloc_track_caller+0x6c/0x2c0 [ 54.165560][ C0] ? tcp_write_wakeup+0x4c3/0xed0 [ 54.170579][ C0] ? tcp_write_wakeup+0x4c3/0xed0 [ 54.175600][ C0] __alloc_skb+0x210/0x730 [ 54.180186][ C0] tcp_write_wakeup+0x4c3/0xed0 [ 54.185113][ C0] ? ktime_get+0x12f/0x160 [ 54.189515][ C0] tcp_keepalive_timer+0x8ba/0xe10 [ 54.194618][ C0] ? tcp_delack_timer+0x230/0x230 [ 54.199631][ C0] call_timer_fn+0x38/0x290 [ 54.204213][ C0] ? tcp_delack_timer+0x230/0x230 [ 54.205477][ T10] workqueue: Failed to create a worker thread: -ENOMEM [ 54.209314][ C0] __run_timers+0x637/0x9a0 [ 54.220662][ C0] ? calc_index+0x200/0x200 [ 54.225237][ C0] ? sched_clock_cpu+0x18/0x3d0 [ 54.230376][ C0] run_timer_softirq+0x6a/0xf0 [ 54.235225][ C0] handle_softirqs+0x250/0x560 [ 54.239990][ C0] ? irqtime_account_irq+0xbe/0x390 [ 54.245203][ C0] __irq_exit_rcu+0x52/0xf0 [ 54.249831][ C0] irq_exit_rcu+0x9/0x10 [ 54.254537][ C0] sysvec_apic_timer_interrupt+0xa9/0xc0 [ 54.260309][ C0] [ 54.263952][ C0] [ 54.267408][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 54.273900][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x36/0x60 [ 54.280563][ C0] Code: 90 b6 98 7e 65 8b 15 91 b6 98 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 5c 0b 00 00 00 74 2c 8b 91 38 0b 00 00 <83> fa 02 75 21 48 8b 91 40 0b 00 00 48 8b 32 48 8d 7e 01 8b 89 3c [ 54.300990][ C0] RSP: 0018:ffffc90000087850 EFLAGS: 00000246 [ 54.307044][ C0] RAX: ffffffff815f728f RBX: 0000000000000001 RCX: ffff888100273b40 [ 54.315441][ C0] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 54.323405][ C0] RBP: ffffc90000087850 R08: ffff8881f7038e97 R09: 1ffff1103ee071d2 [ 54.331510][ C0] R10: dffffc0000000000 R11: ffffed103ee071d3 R12: ffff8881f7038e80 [ 54.339525][ C0] R13: 1ffff1103ee2784d R14: 0000000000000001 R15: ffff8881f713c268 [ 54.347655][ C0] ? smp_call_function_many_cond+0x8cf/0x9e0 [ 54.354197][ C0] smp_call_function_many_cond+0x8cf/0x9e0 [ 54.361447][ C0] ? text_poke_sync+0x30/0x30 [ 54.366126][ C0] ? smp_call_function_many+0x40/0x40 [ 54.371647][ C0] ? __kmalloc_track_caller+0x74/0x2c0 [ 54.377099][ C0] ? text_poke+0x20/0x20 [ 54.381864][ C0] ? preempt_schedule_thunk+0x16/0x18 [ 54.387329][ C0] ? text_poke_sync+0x30/0x30 [ 54.392114][ C0] on_each_cpu_cond_mask+0x43/0x80 [ 54.397220][ C0] text_poke_bp_batch+0x57f/0x600 [ 54.402403][ C0] ? text_poke_loc_init+0x560/0x560 [ 54.407610][ C0] ? __kasan_check_write+0x14/0x20 [ 54.413074][ C0] ? mutex_lock+0x9b/0x1c0 [ 54.417470][ C0] ? wait_for_completion_interruptible_timeout+0xf/0x10 [ 54.424400][ C0] ? text_poke_queue+0xde/0x1a0 [ 54.429232][ C0] text_poke_finish+0x1a/0x30 [ 54.433978][ C0] arch_jump_label_transform_apply+0x15/0x30 [ 54.440078][ C0] __jump_label_update+0x38f/0x3b0 [ 54.445340][ C0] jump_label_update+0x39b/0x450 [ 54.450371][ C0] static_key_disable_cpuslocked+0xc5/0x1a0 [ 54.456557][ C0] static_key_disable+0x1a/0x30 [ 54.461420][ C0] toggle_allocation_gate+0x3af/0x440 [ 54.466807][ C0] ? kfence_debugfs_init+0x70/0x70 [ 54.472592][ C0] ? io_schedule+0xe0/0xe0 [ 54.477212][ C0] ? __schedule+0xbd7/0x14a0 [ 54.481793][ C0] process_one_work+0x6c8/0xbb0 [ 54.486638][ C0] worker_thread+0xaa0/0x1250 [ 54.491662][ C0] kthread+0x3f5/0x4f0 [ 54.495818][ C0] ? worker_clr_flags+0x190/0x190 [ 54.500839][ C0] ? kthread_blkcg+0xd0/0xd0 [ 54.505513][ C0] ret_from_fork+0x1f/0x30 [ 54.509937][ C0] [ 54.513429][ T64] FAULT_INJECTION: forcing a failure. [ 54.513429][ T64] name failslab, interval 1, probability 10, space 0, times 66 [ 54.513682][ T335] CPU: 0 PID: 335 Comm: kworker/0:2 Not tainted syzkaller #0 [ 54.534012][ T335] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 54.544369][ T335] Workqueue: mld mld_ifc_work [ 54.549229][ T335] Call Trace: [ 54.552502][ T335] [ 54.555434][ C1] FAULT_INJECTION: forcing a failure. [ 54.555434][ C1] name failslab, interval 1, probability 10, space 0, times 65 [ 54.555445][ T335] __dump_stack+0x21/0x30 [ 54.572687][ T335] dump_stack_lvl+0x110/0x170 [ 54.577384][ T335] ? show_regs_print_info+0x20/0x20 [ 54.582752][ T335] dump_stack+0x15/0x20 [ 54.586916][ T335] should_fail+0x3ab/0x500 [ 54.591329][ T335] __should_failslab+0xa4/0xe0 [ 54.596204][ T335] should_failslab+0x9/0x20 [ 54.600723][ T335] slab_pre_alloc_hook+0x39/0xd0 [ 54.605824][ T335] ? __alloc_skb+0xe4/0x730 [ 54.610354][ T335] kmem_cache_alloc+0x44/0x260 [ 54.615123][ T335] __alloc_skb+0xe4/0x730 [ 54.619473][ T335] mld_newpack+0x143/0x9e0 [ 54.623966][ T335] ? mld_sendpack+0xba0/0xba0 [ 54.628978][ T335] ? ndisc_send_skb+0xcf0/0xcf0 [ 54.633931][ T335] ? mod_delayed_work_on+0xa8/0xe0 [ 54.639146][ T335] add_grec+0xee8/0x1340 [ 54.643573][ T335] ? wait_for_completion_killable_timeout+0x10/0x10 [ 54.650247][ T335] mld_ifc_work+0x728/0xc40 [ 54.655174][ T335] process_one_work+0x6c8/0xbb0 [ 54.660243][ T335] worker_thread+0xaa0/0x1250 [ 54.665116][ T335] ? __kasan_check_read+0x11/0x20 [ 54.670309][ T335] kthread+0x3f5/0x4f0 [ 54.674816][ T335] ? worker_clr_flags+0x190/0x190 [ 54.680304][ T335] ? kthread_blkcg+0xd0/0xd0 [ 54.684904][ T335] ret_from_fork+0x1f/0x30 [ 54.689322][ T335] [ 54.692352][ C1] CPU: 1 PID: 64 Comm: ext4-rsv-conver Not tainted syzkaller #0 [ 54.699982][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 54.706961][ T20] FAULT_INJECTION: forcing a failure. [ 54.706961][ T20] name failslab, interval 1, probability 10, space 0, times 64 [ 54.710125][ C1] Workqueue: ext4-rsv-conversion ext4_end_io_rsv_work [ 54.723016][ T298] FAULT_INJECTION: forcing a failure. [ 54.723016][ T298] name failslab, interval 1, probability 10, space 0, times 64 [ 54.730119][ C1] Call Trace: [ 54.730127][ C1] [ 54.730132][ C1] __dump_stack+0x21/0x30 [ 54.753741][ C1] dump_stack_lvl+0x110/0x170 [ 54.758504][ C1] ? show_regs_print_info+0x20/0x20 [ 54.763691][ C1] dump_stack+0x15/0x20 [ 54.767834][ C1] should_fail+0x3ab/0x500 [ 54.772241][ C1] __should_failslab+0xa4/0xe0 [ 54.776998][ C1] should_failslab+0x9/0x20 [ 54.781488][ C1] slab_pre_alloc_hook+0x39/0xd0 [ 54.786505][ C1] ? __alloc_skb+0xe4/0x730 [ 54.791004][ C1] kmem_cache_alloc+0x44/0x260 [ 54.795843][ C1] ? __kasan_check_read+0x11/0x20 [ 54.801327][ C1] __alloc_skb+0xe4/0x730 [ 54.805837][ C1] __tcp_send_ack+0x9b/0x6c0 [ 54.810959][ C1] tcp_send_ack+0x3b/0x60 [ 54.815495][ C1] tcp_delack_timer_handler+0x339/0x740 [ 54.821144][ C1] tcp_delack_timer+0x104/0x230 [ 54.826171][ C1] ? tcp_write_timer+0x1d0/0x1d0 [ 54.831099][ C1] call_timer_fn+0x38/0x290 [ 54.835594][ C1] ? tcp_write_timer+0x1d0/0x1d0 [ 54.840539][ C1] __run_timers+0x637/0x9a0 [ 54.845125][ C1] ? calc_index+0x200/0x200 [ 54.849617][ C1] ? sched_clock_cpu+0x18/0x3d0 [ 54.854631][ C1] run_timer_softirq+0x6a/0xf0 [ 54.859667][ C1] handle_softirqs+0x250/0x560 [ 54.864426][ C1] __irq_exit_rcu+0x52/0xf0 [ 54.868917][ C1] irq_exit_rcu+0x9/0x10 [ 54.873149][ C1] sysvec_apic_timer_interrupt+0xa9/0xc0 [ 54.878775][ C1] [ 54.881690][ C1] [ 54.884606][ C1] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 54.890575][ C1] RIP: 0010:kasan_check_range+0x224/0x2a0 [ 54.896477][ C1] Code: 4c 89 fb 48 c1 eb 20 84 db 75 7b 4c 89 fb 48 c1 eb 28 84 db 75 77 49 c1 ef 30 bb 07 00 00 00 45 84 ff 75 70 4d 01 f3 49 01 db <4d> 89 dc 4d 85 db 74 95 4d 01 d1 4d 39 cc 75 0d 41 83 e0 07 45 0f [ 54.916428][ C1] RSP: 0018:ffffc90000937388 EFLAGS: 00000202 [ 54.922486][ C1] RAX: ffffffff81524201 RBX: ffffffffffffffff RCX: ffffffff8152421c [ 54.930447][ C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff86711f80 [ 54.938406][ C1] RBP: ffffc900009373b0 R08: ffffffff86711f83 R09: 1ffffffff0ce23f0 [ 54.946895][ C1] R10: dffffc0000000000 R11: fffffbfff0ce23f0 R12: 0000000000000001 [ 54.955386][ C1] R13: dffffc0000000001 R14: 1ffffffff0ce23f0 R15: 1ffff92000126e7c [ 54.963650][ C1] ? __printk_wait_on_cpu_lock+0x1/0x40 [ 54.969305][ C1] ? __printk_wait_on_cpu_lock+0x1c/0x40 [ 54.974933][ C1] __kasan_check_read+0x11/0x20 [ 54.980077][ C1] __printk_wait_on_cpu_lock+0x1c/0x40 [ 54.985733][ C1] dump_stack_lvl+0xce/0x170 [ 54.990344][ C1] ? show_regs_print_info+0x20/0x20 [ 54.996130][ C1] ? prandom_u32+0x24d/0x290 [ 55.000796][ C1] dump_stack+0x15/0x20 [ 55.004954][ C1] should_fail+0x3ab/0x500 [ 55.009452][ C1] __should_failslab+0xa4/0xe0 [ 55.014298][ C1] should_failslab+0x9/0x20 [ 55.019110][ C1] slab_pre_alloc_hook+0x39/0xd0 [ 55.024235][ C1] __kmalloc+0x6d/0x2c0 [ 55.028382][ C1] ? jbd2_journal_start_reserved+0xe4/0x3f0 [ 55.034351][ C1] ? ext4_find_extent+0x371/0xe30 [ 55.039401][ C1] ? ext4_end_io_rsv_work+0x2b1/0x620 [ 55.045340][ C1] ext4_find_extent+0x371/0xe30 [ 55.050461][ C1] ext4_ext_map_blocks+0x20c/0x6150 [ 55.055839][ C1] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 55.062198][ C1] ? __wake_up+0x11c/0x180 [ 55.066606][ C1] ? remove_wait_queue+0x140/0x140 [ 55.071719][ C1] ? ext4_ext_release+0x10/0x10 [ 55.076745][ C1] ? ext4_es_lookup_extent+0x563/0x900 [ 55.082245][ C1] ext4_map_blocks+0x979/0x1a50 [ 55.087197][ C1] ? ext4_issue_zeroout+0x250/0x250 [ 55.092882][ C1] ? kvm_sched_clock_read+0x18/0x40 [ 55.098384][ C1] ext4_convert_unwritten_extents+0x2b6/0x5e0 [ 55.105663][ C1] ? trace_ext4_fallocate_exit+0x130/0x130 [ 55.111466][ C1] ? jbd2_journal_start_reserved+0x1cc/0x3f0 [ 55.117452][ C1] ? ext4_convert_unwritten_io_end_vec+0x33/0x180 [ 55.123973][ C1] ? __ext4_journal_start_reserved+0x1bc/0x350 [ 55.130272][ C1] ext4_convert_unwritten_io_end_vec+0x103/0x180 [ 55.136982][ C1] ext4_end_io_rsv_work+0x2b1/0x620 [ 55.142328][ C1] ? ext4_last_io_end_vec+0x70/0x70 [ 55.147768][ C1] process_one_work+0x6c8/0xbb0 [ 55.152618][ C1] rescuer_thread+0x73d/0xf80 [ 55.157624][ C1] ? rcu_free_pwq+0x30/0x30 [ 55.162121][ C1] ? __kasan_check_read+0x11/0x20 [ 55.167235][ C1] ? __kthread_parkme+0xab/0x1f0 [ 55.172310][ C1] kthread+0x3f5/0x4f0 [ 55.176359][ C1] ? rcu_free_pwq+0x30/0x30 [ 55.180840][ C1] ? kthread_blkcg+0xd0/0xd0 [ 55.185990][ C1] ret_from_fork+0x1f/0x30 [ 55.190479][ C1] [ 55.193550][ C1] FAULT_INJECTION: forcing a failure. [ 55.193550][ C1] name failslab, interval 1, probability 10, space 0, times 63 [ 55.193698][ T63] CPU: 0 PID: 63 Comm: jbd2/sda1-8 Not tainted syzkaller #0 [ 55.213992][ T63] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 55.224132][ T63] Call Trace: [ 55.227711][ T63] [ 55.230816][ T63] __dump_stack+0x21/0x30 [ 55.235176][ T63] dump_stack_lvl+0x110/0x170 [ 55.239864][ T63] ? show_regs_print_info+0x20/0x20 [ 55.245511][ T63] ? prandom_u32+0x24d/0x290 [ 55.250906][ T63] dump_stack+0x15/0x20 [ 55.255430][ T63] should_fail+0x3ab/0x500 [ 55.260418][ T63] __should_failslab+0xa4/0xe0 [ 55.265449][ T63] should_failslab+0x9/0x20 [ 55.270123][ T63] slab_pre_alloc_hook+0x39/0xd0 [ 55.275077][ T63] ? mempool_alloc_slab+0x1d/0x30 [ 55.280106][ T63] kmem_cache_alloc+0x44/0x260 [ 55.285121][ T63] ? mempool_free+0x330/0x330 [ 55.289786][ T63] mempool_alloc_slab+0x1d/0x30 [ 55.294877][ T63] mempool_alloc+0x167/0x4c0 [ 55.299569][ T63] ? chksum_update+0x47/0xa0 [ 55.304794][ T63] ? crypto_shash_update+0x216/0x300 [ 55.310103][ T63] ? crypto_shash_setkey+0x2c0/0x2c0 [ 55.315468][ T63] ? mempool_resize+0x880/0x880 [ 55.320415][ T63] ? chksum_update+0x47/0xa0 [ 55.325186][ T63] ? crypto_shash_update+0x216/0x300 [ 55.330545][ T63] bio_alloc_bioset+0x124/0x910 [ 55.335919][ T63] submit_bh_wbc+0x1c2/0x680 [ 55.340988][ T63] ? jbd2_journal_get_descriptor_buffer+0x390/0x390 [ 55.349281][ T63] submit_bh+0x2a/0x40 [ 55.355089][ T63] jbd2_journal_commit_transaction+0x2461/0x5650 [ 55.361640][ T63] ? jbd2_journal_finish_inode_data_buffers+0xb0/0xb0 [ 55.368529][ T63] ? __switch_to+0x56c/0x1070 [ 55.373658][ T63] ? compat_start_thread+0x20/0x20 [ 55.378974][ T63] ? _raw_spin_unlock+0x4d/0x70 [ 55.384007][ T63] ? _raw_spin_lock+0xf0/0xf0 [ 55.388701][ T63] ? __kasan_check_write+0x14/0x20 [ 55.393806][ T63] ? _raw_spin_lock_irqsave+0xc2/0x130 [ 55.399284][ T63] ? _raw_spin_lock+0xf0/0xf0 [ 55.403961][ T63] ? detach_if_pending+0xf5/0x300 [ 55.409061][ T63] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 55.415115][ T63] ? del_timer_sync+0x144/0x1a0 [ 55.419960][ T63] kjournald2+0x43d/0x860 [ 55.424410][ T63] ? jbd2_seq_info_show+0x5c0/0x5c0 [ 55.429680][ T63] ? io_schedule+0xe0/0xe0 [ 55.434086][ T63] ? __kasan_check_read+0x11/0x20 [ 55.439097][ T63] ? __kthread_parkme+0xab/0x1f0 [ 55.444020][ T63] kthread+0x3f5/0x4f0 [ 55.448195][ T63] ? jbd2_seq_info_show+0x5c0/0x5c0 [ 55.453869][ T63] ? kthread_blkcg+0xd0/0xd0 [ 55.458655][ T63] ret_from_fork+0x1f/0x30 [ 55.463158][ T63] [ 55.466263][ C1] CPU: 1 PID: 64 Comm: ext4-rsv-conver Not tainted syzkaller #0 [ 55.474119][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 55.484526][ C1] Workqueue: ext4-rsv-conversion ext4_end_io_rsv_work [ 55.491741][ C1] Call Trace: [ 55.495106][ C1] [ 55.497955][ C1] __dump_stack+0x21/0x30 [ 55.502307][ C1] dump_stack_lvl+0x110/0x170 [ 55.507418][ C1] ? show_regs_print_info+0x20/0x20 [ 55.513055][ C1] ? prandom_u32+0x24d/0x290 [ 55.517809][ C1] dump_stack+0x15/0x20 [ 55.521962][ C1] should_fail+0x3ab/0x500 [ 55.526821][ C1] __should_failslab+0xa4/0xe0 [ 55.533149][ C1] should_failslab+0x9/0x20 [ 55.538038][ C1] slab_pre_alloc_hook+0x39/0xd0 [ 55.543508][ C1] ? __alloc_skb+0xe4/0x730 [ 55.548878][ C1] kmem_cache_alloc+0x44/0x260 [ 55.554283][ C1] __alloc_skb+0xe4/0x730 [ 55.558740][ C1] wg_packet_send_keepalive+0x62/0x1c0 [ 55.564378][ C1] ? wg_expired_send_persistent_keepalive+0x44/0x80 [ 55.571151][ C1] wg_expired_send_persistent_keepalive+0x53/0x80 [ 55.577656][ C1] ? wg_expired_zero_key_material+0x170/0x170 [ 55.583905][ C1] call_timer_fn+0x38/0x290 [ 55.588488][ C1] ? wg_expired_zero_key_material+0x170/0x170 [ 55.594548][ C1] __run_timers+0x637/0x9a0 [ 55.599205][ C1] ? calc_index+0x200/0x200 [ 55.603915][ C1] ? sched_clock_cpu+0x18/0x3d0 [ 55.609341][ C1] run_timer_softirq+0x6a/0xf0 [ 55.614298][ C1] handle_softirqs+0x250/0x560 [ 55.619187][ C1] __irq_exit_rcu+0x52/0xf0 [ 55.624229][ C1] irq_exit_rcu+0x9/0x10 [ 55.629313][ C1] sysvec_apic_timer_interrupt+0xa9/0xc0 [ 55.635046][ C1] [ 55.638063][ C1] [ 55.641076][ C1] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 55.647096][ C1] RIP: 0010:kasan_check_range+0x224/0x2a0 [ 55.652897][ C1] Code: 4c 89 fb 48 c1 eb 20 84 db 75 7b 4c 89 fb 48 c1 eb 28 84 db 75 77 49 c1 ef 30 bb 07 00 00 00 45 84 ff 75 70 4d 01 f3 49 01 db <4d> 89 dc 4d 85 db 74 95 4d 01 d1 4d 39 cc 75 0d 41 83 e0 07 45 0f [ 55.673680][ C1] RSP: 0018:ffffc90000937388 EFLAGS: 00000202 [ 55.680596][ C1] RAX: ffffffff81524201 RBX: ffffffffffffffff RCX: ffffffff8152421c [ 55.689223][ C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff86711f80 [ 55.698396][ C1] RBP: ffffc900009373b0 R08: ffffffff86711f83 R09: 1ffffffff0ce23f0 [ 55.706768][ C1] R10: dffffc0000000000 R11: fffffbfff0ce23f0 R12: 0000000000000001 [ 55.714784][ C1] R13: dffffc0000000001 R14: 1ffffffff0ce23f0 R15: 1ffff92000126e7c [ 55.722855][ C1] ? __printk_wait_on_cpu_lock+0x1/0x40 [ 55.728659][ C1] ? __printk_wait_on_cpu_lock+0x1c/0x40 [ 55.735408][ C1] __kasan_check_read+0x11/0x20 [ 55.740604][ C1] __printk_wait_on_cpu_lock+0x1c/0x40 [ 55.746326][ C1] dump_stack_lvl+0xce/0x170 [ 55.751310][ C1] ? show_regs_print_info+0x20/0x20 [ 55.756735][ C1] ? prandom_u32+0x24d/0x290 [ 55.761854][ C1] dump_stack+0x15/0x20 [ 55.766445][ C1] should_fail+0x3ab/0x500 [ 55.770856][ C1] __should_failslab+0xa4/0xe0 [ 55.775971][ C1] should_failslab+0x9/0x20 [ 55.780970][ C1] slab_pre_alloc_hook+0x39/0xd0 [ 55.786722][ C1] __kmalloc+0x6d/0x2c0 [ 55.791248][ C1] ? jbd2_journal_start_reserved+0xe4/0x3f0 [ 55.797572][ C1] ? ext4_find_extent+0x371/0xe30 [ 55.802872][ C1] ? ext4_end_io_rsv_work+0x2b1/0x620 [ 55.808326][ C1] ext4_find_extent+0x371/0xe30 [ 55.813293][ C1] ext4_ext_map_blocks+0x20c/0x6150 [ 55.818770][ C1] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 55.825078][ C1] ? __wake_up+0x11c/0x180 [ 55.829576][ C1] ? remove_wait_queue+0x140/0x140 [ 55.834859][ C1] ? ext4_ext_release+0x10/0x10 [ 55.839799][ C1] ? ext4_es_lookup_extent+0x563/0x900 [ 55.845375][ C1] ext4_map_blocks+0x979/0x1a50 [ 55.850634][ C1] ? ext4_issue_zeroout+0x250/0x250 [ 55.856028][ C1] ? kvm_sched_clock_read+0x18/0x40 [ 55.861271][ C1] ext4_convert_unwritten_extents+0x2b6/0x5e0 [ 55.867465][ C1] ? trace_ext4_fallocate_exit+0x130/0x130 [ 55.873805][ C1] ? jbd2_journal_start_reserved+0x1cc/0x3f0 [ 55.879976][ C1] ? ext4_convert_unwritten_io_end_vec+0x33/0x180 [ 55.886400][ C1] ? __ext4_journal_start_reserved+0x1bc/0x350 [ 55.892551][ C1] ext4_convert_unwritten_io_end_vec+0x103/0x180 [ 55.898972][ C1] ext4_end_io_rsv_work+0x2b1/0x620 [ 55.904249][ C1] ? ext4_last_io_end_vec+0x70/0x70 [ 55.909446][ C1] process_one_work+0x6c8/0xbb0 [ 55.914405][ C1] rescuer_thread+0x73d/0xf80 [ 55.919250][ C1] ? rcu_free_pwq+0x30/0x30 [ 55.923760][ C1] ? __kasan_check_read+0x11/0x20 [ 55.928947][ C1] ? __kthread_parkme+0xab/0x1f0 [ 55.934040][ C1] kthread+0x3f5/0x4f0 [ 55.938117][ C1] ? rcu_free_pwq+0x30/0x30 [ 55.942725][ C1] ? kthread_blkcg+0xd0/0xd0 [ 55.947404][ C1] ret_from_fork+0x1f/0x30 [ 55.951815][ C1] [ 55.954911][ T298] CPU: 0 PID: 298 Comm: syz-executor Not tainted syzkaller #0 [ 55.962559][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 55.972619][ T298] Call Trace: [ 55.975994][ T298] [ 55.979179][ T298] __dump_stack+0x21/0x30 [ 55.983850][ T298] dump_stack_lvl+0x110/0x170 [ 55.989040][ T298] ? show_regs_print_info+0x20/0x20 [ 55.994274][ T298] ? prandom_u32+0x24d/0x290 [ 55.999110][ T298] dump_stack+0x15/0x20 [ 56.003253][ T298] should_fail+0x3ab/0x500 [ 56.007660][ T298] __should_failslab+0xa4/0xe0 [ 56.012410][ T298] should_failslab+0x9/0x20 [ 56.017091][ T298] slab_pre_alloc_hook+0x39/0xd0 [ 56.022020][ T298] ? security_file_alloc+0x33/0x120 [ 56.027389][ T298] kmem_cache_alloc+0x44/0x260 [ 56.032146][ T298] security_file_alloc+0x33/0x120 [ 56.037160][ T298] __alloc_file+0xb5/0x2a0 [ 56.041563][ T298] alloc_empty_file+0x97/0x180 [ 56.046400][ T298] alloc_file+0x59/0x580 [ 56.050633][ T298] alloc_file_pseudo+0x180/0x200 [ 56.055668][ T298] ? alloc_empty_file_noaccount+0x80/0x80 [ 56.061633][ T298] ? atime_needs_update+0x810/0x810 [ 56.067079][ T298] ? memset+0x35/0x40 [ 56.071143][ T298] ? create_pipe_files+0x299/0x6c0 [ 56.076285][ T298] ? memcpy+0x56/0x70 [ 56.080350][ T298] create_pipe_files+0x2e3/0x6c0 [ 56.085629][ T298] __do_pipe_flags+0x4f/0x200 [ 56.091190][ T298] do_pipe2+0xa7/0x190 [ 56.095601][ T298] ? pipe_fcntl+0x510/0x510 [ 56.100292][ T298] ? debug_smp_processor_id+0x17/0x20 [ 56.105668][ T298] __x64_sys_pipe2+0x5a/0x70 [ 56.110297][ T298] x64_sys_call+0x354/0x9a0 [ 56.114796][ T298] do_syscall_64+0x4c/0xa0 [ 56.119546][ T298] ? clear_bhb_loop+0x50/0xa0 [ 56.124209][ T298] ? clear_bhb_loop+0x50/0xa0 [ 56.128964][ T298] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 56.134844][ T298] RIP: 0033:0x7f969b77eec9 [ 56.139521][ T298] Code: 38 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 eb aa e8 ea 34 00 00 66 2e 0f 1f 84 00 00 00 00 00 31 f6 b8 25 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 07 c3 66 0f 1f 44 00 00 48 c7 c2 e8 ff ff ff [ 56.162854][ T298] RSP: 002b:00007fff6848fa18 EFLAGS: 00000246 ORIG_RAX: 0000000000000125 [ 56.171811][ T298] RAX: ffffffffffffffda RBX: 000055557edcb8f0 RCX: 00007f969b77eec9 [ 56.180059][ T298] RDX: 0000000000000003 RSI: 0000000000000000 RDI: 00007fff6848fa30 [ 56.188027][ T298] RBP: 00007fff6848fff0 R08: 00007f969b9d2e20 R09: 0000000000000000 [ 56.195996][ T298] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff6848fe30 [ 56.203955][ T298] R13: 000055557edcef60 R14: 000055557edcbbf0 R15: 00007fff6848fb70 [ 56.212017][ T298] [ 56.215483][ T64] CPU: 1 PID: 64 Comm: ext4-rsv-conver Not tainted syzkaller #0 [ 56.223212][ T64] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 56.235462][ T374] FAULT_INJECTION: forcing a failure. [ 56.235462][ T374] name failslab, interval 1, probability 10, space 0, times 62 [ 56.235580][ T64] Workqueue: ext4-rsv-conversion ext4_end_io_rsv_work [ 56.256248][ T64] Call Trace: [ 56.259518][ T64] [ 56.262546][ T64] __dump_stack+0x21/0x30 [ 56.266972][ T64] dump_stack_lvl+0x110/0x170 [ 56.272524][ T64] ? show_regs_print_info+0x20/0x20 [ 56.278083][ T64] ? prandom_u32+0x24d/0x290 [ 56.282770][ T64] dump_stack+0x15/0x20 [ 56.286920][ T64] should_fail+0x3ab/0x500 [ 56.291369][ T64] __should_failslab+0xa4/0xe0 [ 56.296141][ T64] should_failslab+0x9/0x20 [ 56.300638][ T64] slab_pre_alloc_hook+0x39/0xd0 [ 56.305568][ T64] __kmalloc+0x6d/0x2c0 [ 56.309919][ T64] ? jbd2_journal_start_reserved+0xe4/0x3f0 [ 56.315830][ T64] ? ext4_find_extent+0x371/0xe30 [ 56.320842][ T64] ? ext4_end_io_rsv_work+0x2b1/0x620 [ 56.326318][ T64] ext4_find_extent+0x371/0xe30 [ 56.331259][ T64] ext4_ext_map_blocks+0x20c/0x6150 [ 56.336460][ T64] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 56.342409][ T64] ? __wake_up+0x11c/0x180 [ 56.346831][ T64] ? remove_wait_queue+0x140/0x140 [ 56.352036][ T64] ? ext4_ext_release+0x10/0x10 [ 56.356894][ T64] ? ext4_es_lookup_extent+0x563/0x900 [ 56.362352][ T64] ext4_map_blocks+0x979/0x1a50 [ 56.365475][ C0] FAULT_INJECTION: forcing a failure. [ 56.365475][ C0] name failslab, interval 1, probability 10, space 0, times 62 [ 56.367192][ T64] ? ext4_issue_zeroout+0x250/0x250 [ 56.385202][ T64] ? kvm_sched_clock_read+0x18/0x40 [ 56.390706][ T64] ext4_convert_unwritten_extents+0x2b6/0x5e0 [ 56.396788][ T64] ? trace_ext4_fallocate_exit+0x130/0x130 [ 56.402779][ T64] ? jbd2_journal_start_reserved+0x1cc/0x3f0 [ 56.408887][ T64] ? ext4_convert_unwritten_io_end_vec+0x33/0x180 [ 56.415482][ T64] ? __ext4_journal_start_reserved+0x1bc/0x350 [ 56.421654][ T64] ext4_convert_unwritten_io_end_vec+0x103/0x180 [ 56.428348][ T64] ext4_end_io_rsv_work+0x2b1/0x620 [ 56.433972][ T64] ? ext4_last_io_end_vec+0x70/0x70 [ 56.439254][ T64] process_one_work+0x6c8/0xbb0 [ 56.444099][ T64] rescuer_thread+0x73d/0xf80 [ 56.448771][ T64] ? rcu_free_pwq+0x30/0x30 [ 56.453262][ T64] ? __kasan_check_read+0x11/0x20 [ 56.458276][ T64] ? __kthread_parkme+0xab/0x1f0 [ 56.463343][ T64] kthread+0x3f5/0x4f0 [ 56.467398][ T64] ? rcu_free_pwq+0x30/0x30 [ 56.471894][ T64] ? kthread_blkcg+0xd0/0xd0 [ 56.476562][ T64] ret_from_fork+0x1f/0x30 [ 56.480974][ T64] [ 56.483983][ C0] CPU: 0 PID: 89 Comm: klogd Not tainted syzkaller #0 [ 56.484122][ T64] EXT4-fs warning (device sda1): ext4_convert_unwritten_extents:4907: inode #2021: block 0: len 1024: ext4_ext_map_blocks returned -12 [ 56.490742][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 56.490754][ C0] Call Trace: [ 56.490761][ C0] [ 56.505483][ T45] FAULT_INJECTION: forcing a failure. [ 56.505483][ T45] name failslab, interval 1, probability 10, space 0, times 61 [ 56.514851][ C0] __dump_stack+0x21/0x30 [ 56.538240][ C0] dump_stack_lvl+0x110/0x170 [ 56.542909][ C0] ? show_regs_print_info+0x20/0x20 [ 56.548098][ C0] ? prandom_u32+0x24d/0x290 [ 56.552815][ C0] dump_stack+0x15/0x20 [ 56.557046][ C0] should_fail+0x3ab/0x500 [ 56.561457][ C0] __should_failslab+0xa4/0xe0 [ 56.566270][ C0] should_failslab+0x9/0x20 [ 56.570764][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 56.575691][ C0] kmem_cache_alloc_trace+0x48/0x270 [ 56.580965][ C0] ? dst_cow_metrics_generic+0x55/0x1c0 [ 56.586500][ C0] dst_cow_metrics_generic+0x55/0x1c0 [ 56.591860][ C0] icmp6_dst_alloc+0x35f/0x520 [ 56.596617][ C0] ndisc_send_skb+0x2a9/0xcf0 [ 56.601380][ C0] ? __x64_sys_sendto+0xe5/0x100 [ 56.606311][ C0] ? x64_sys_call+0x178/0x9a0 [ 56.611066][ C0] ? do_syscall_64+0x4c/0xa0 [ 56.615642][ C0] ? entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 56.622066][ C0] ? ndisc_alloc_skb+0x290/0x290 [ 56.627293][ C0] ? ndisc_send_rs+0x61f/0x960 [ 56.632846][ C0] ? memcpy+0x56/0x70 [ 56.636839][ C0] ndisc_send_rs+0x711/0x960 [ 56.641689][ C0] addrconf_rs_timer+0x35a/0x600 [ 56.646965][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 56.653422][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 56.659695][ C0] call_timer_fn+0x38/0x290 [ 56.665006][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 56.671693][ C0] __run_timers+0x637/0x9a0 [ 56.676789][ C0] ? calc_index+0x200/0x200 [ 56.681413][ C0] ? sched_clock_cpu+0x18/0x3d0 [ 56.686471][ C0] run_timer_softirq+0x6a/0xf0 [ 56.691508][ C0] handle_softirqs+0x250/0x560 [ 56.696460][ C0] __irq_exit_rcu+0x52/0xf0 [ 56.700974][ C0] irq_exit_rcu+0x9/0x10 [ 56.705295][ C0] sysvec_apic_timer_interrupt+0xa9/0xc0 [ 56.711121][ C0] [ 56.714214][ C0] [ 56.717218][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 56.723214][ C0] RIP: 0010:__kasan_check_read+0x0/0x20 [ 56.728757][ C0] Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 c7 c7 a1 c2 e7 85 eb 0a 48 c7 c7 fd 95 dc 85 48 89 de e8 37 8a 01 03 45 31 ff eb d1 00 00 <55> 48 89 e5 89 f6 48 8b 4d 08 31 d2 e8 af ed ff ff 5d c3 66 2e 0f [ 56.748441][ C0] RSP: 0018:ffffc900009a76a8 EFLAGS: 00000293 [ 56.754500][ C0] RAX: ffffffff8152422c RBX: ffffffff8564bda0 RCX: ffff88810d7b8000 [ 56.762462][ C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff86711f80 [ 56.770509][ C0] RBP: ffffc900009a76b0 R08: 0000000000000003 R09: 0000000000000004 [ 56.778470][ C0] R10: dffffc0000000000 R11: fffffbfff0ce23f0 R12: dffffc0000000000 [ 56.786776][ C0] R13: 0000000000000200 R14: dffffc0000000004 R15: 1ffff92000134ed8 [ 56.794914][ C0] ? __printk_wait_on_cpu_lock+0x2c/0x40 [ 56.800573][ C0] ? __printk_wait_on_cpu_lock+0x1c/0x40 [ 56.806207][ C0] dump_stack_lvl+0xce/0x170 [ 56.810788][ C0] ? show_regs_print_info+0x20/0x20 [ 56.816067][ C0] ? prandom_u32+0x24d/0x290 [ 56.820660][ C0] dump_stack+0x15/0x20 [ 56.824910][ C0] should_fail+0x3ab/0x500 [ 56.829426][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 56.834701][ C0] __should_failslab+0xa4/0xe0 [ 56.839461][ C0] should_failslab+0x9/0x20 [ 56.844133][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 56.849060][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 56.854596][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 56.859869][ C0] __kmalloc_track_caller+0x6c/0x2c0 [ 56.865273][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 56.870654][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 56.875942][ C0] __alloc_skb+0x210/0x730 [ 56.880403][ C0] alloc_skb_with_frags+0xa8/0x620 [ 56.885505][ C0] ? memcpy+0x56/0x70 [ 56.889477][ C0] sock_alloc_send_pskb+0x87f/0x9a0 [ 56.894737][ C0] ? sock_kzfree_s+0x60/0x60 [ 56.899407][ C0] ? __kasan_check_write+0x14/0x20 [ 56.904626][ C0] ? _raw_spin_lock+0x94/0xf0 [ 56.909304][ C0] ? _raw_spin_trylock_bh+0x150/0x150 [ 56.914754][ C0] unix_dgram_sendmsg+0x6f3/0x19b0 [ 56.919865][ C0] ? unix_dgram_poll+0x6c0/0x6c0 [ 56.924793][ C0] ? security_socket_sendmsg+0x82/0xa0 [ 56.930331][ C0] __sys_sendto+0x46d/0x620 [ 56.934908][ C0] ? __ia32_sys_getpeername+0x90/0x90 [ 56.940273][ C0] ? __kasan_check_write+0x14/0x20 [ 56.945463][ C0] __x64_sys_sendto+0xe5/0x100 [ 56.950216][ C0] x64_sys_call+0x178/0x9a0 [ 56.954800][ C0] do_syscall_64+0x4c/0xa0 [ 56.959200][ C0] ? clear_bhb_loop+0x50/0xa0 [ 56.964039][ C0] ? clear_bhb_loop+0x50/0xa0 [ 56.968703][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 56.975885][ C0] RIP: 0033:0x7fca11087407 [ 56.980319][ C0] Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 57.000643][ C0] RSP: 002b:00007ffe548605a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 57.009495][ C0] RAX: ffffffffffffffda RBX: 00007fca10f37c80 RCX: 00007fca11087407 [ 57.017751][ C0] RDX: 000000000000005b RSI: 00007ffe548606e0 RDI: 0000000000000003 [ 57.025985][ C0] RBP: 00007ffe54860b10 R08: 0000000000000000 R09: 0000000000000000 [ 57.034037][ C0] R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffe54860b28 [ 57.042444][ C0] R13: 00007ffe548606e0 R14: 0000000000000040 R15: 00007ffe548606e0 [ 57.050438][ C0] [ 57.053533][ T45] CPU: 1 PID: 45 Comm: kworker/u4:2 Not tainted syzkaller #0 [ 57.053656][ C0] FAULT_INJECTION: forcing a failure. [ 57.053656][ C0] name failslab, interval 1, probability 10, space 0, times 60 [ 57.060925][ T45] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 57.060937][ T45] Workqueue: netns cleanup_net [ 57.089063][ T45] Call Trace: [ 57.092339][ T45] [ 57.095346][ T45] __dump_stack+0x21/0x30 [ 57.099672][ T45] dump_stack_lvl+0x110/0x170 [ 57.104590][ T45] ? show_regs_print_info+0x20/0x20 [ 57.109817][ T45] dump_stack+0x15/0x20 [ 57.114074][ T45] should_fail+0x3ab/0x500 [ 57.118577][ T45] __should_failslab+0xa4/0xe0 [ 57.123357][ T45] should_failslab+0x9/0x20 [ 57.127854][ T45] slab_pre_alloc_hook+0x39/0xd0 [ 57.132870][ T45] ? __alloc_skb+0xe4/0x730 [ 57.137614][ T45] kmem_cache_alloc+0x44/0x260 [ 57.142485][ T45] __alloc_skb+0xe4/0x730 [ 57.147006][ T45] __neigh_notify+0x84/0x130 [ 57.151605][ T45] neigh_cleanup_and_release+0x2c/0x1a0 [ 57.157324][ T45] neigh_flush_dev+0x667/0x810 [ 57.162160][ T45] ? __kasan_check_write+0x14/0x20 [ 57.167266][ T45] __neigh_ifdown+0x3f/0x3a0 [ 57.171852][ T45] neigh_ifdown+0x1f/0x30 [ 57.176382][ T45] rt6_disable_ip+0x6a5/0x730 [ 57.181066][ T45] ? fib6_ifdown+0x4e0/0x4e0 [ 57.185650][ T45] ? __kasan_check_read+0x11/0x20 [ 57.190763][ T45] addrconf_ifdown+0x144/0x1910 [ 57.195875][ T45] ? detach_if_pending+0xf5/0x300 [ 57.201017][ T45] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 57.206817][ T45] ? addrconf_cleanup+0x1c0/0x1c0 [ 57.211923][ T45] ? __kasan_check_write+0x14/0x20 [ 57.217295][ T45] ? mutex_unlock+0x8f/0x230 [ 57.222224][ T45] ? __mutex_lock_slowpath+0x10/0x10 [ 57.227884][ T45] ? macsec_notify+0x10d/0x4c0 [ 57.232832][ T45] ? nf_nat_masq_schedule+0x4d0/0x4d0 [ 57.238380][ T45] ? masq_device_event+0xd0/0xd0 [ 57.245092][ T45] addrconf_notify+0x3bd/0xe00 [ 57.249953][ T45] raw_notifier_call_chain+0x90/0x100 [ 57.255764][ T45] dev_close_many+0x325/0x4d0 [ 57.260729][ T45] ? __dev_open+0x500/0x500 [ 57.265492][ T45] ? _raw_spin_lock_irq+0x95/0xf0 [ 57.270808][ T45] ? __kasan_check_read+0x11/0x20 [ 57.275825][ T45] unregister_netdevice_many+0x477/0x1a00 [ 57.281568][ T45] ? wait_for_common+0x355/0x410 [ 57.286593][ T45] ? alloc_netdev_mqs+0xe20/0xe20 [ 57.291696][ T45] ? unregister_netdevice_queue+0x17c/0x320 [ 57.297579][ T45] ? list_netdevice+0x4c0/0x4c0 [ 57.302512][ T45] ip6gre_exit_batch_net+0x5ca/0x620 [ 57.307905][ T45] ? ip6gre_init_net+0x340/0x340 [ 57.312856][ T45] ? ip6gre_init_net+0x340/0x340 [ 57.317870][ T45] cleanup_net+0x605/0xae0 [ 57.322281][ T45] ? ops_init+0x470/0x470 [ 57.326642][ T45] process_one_work+0x6c8/0xbb0 [ 57.331666][ T45] worker_thread+0xaa0/0x1250 [ 57.336605][ T45] ? __kasan_check_read+0x11/0x20 [ 57.342066][ T45] kthread+0x3f5/0x4f0 [ 57.346755][ T45] ? worker_clr_flags+0x190/0x190 [ 57.352119][ T45] ? kthread_blkcg+0xd0/0xd0 [ 57.356891][ T45] ret_from_fork+0x1f/0x30 [ 57.361305][ T45] [ 57.364318][ C0] CPU: 0 PID: 89 Comm: klogd Not tainted syzkaller #0 [ 57.364379][ T45] FAULT_INJECTION: forcing a failure. [ 57.364379][ T45] name failslab, interval 1, probability 10, space 0, times 59 [ 57.371451][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 57.371471][ C0] Call Trace: [ 57.371478][ C0] [ 57.371484][ C0] __dump_stack+0x21/0x30 [ 57.406717][ C0] dump_stack_lvl+0x110/0x170 [ 57.411513][ C0] ? show_regs_print_info+0x20/0x20 [ 57.416861][ C0] ? prandom_u32+0x24d/0x290 [ 57.421454][ C0] dump_stack+0x15/0x20 [ 57.425621][ C0] should_fail+0x3ab/0x500 [ 57.430119][ C0] __should_failslab+0xa4/0xe0 [ 57.434985][ C0] should_failslab+0x9/0x20 [ 57.439476][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 57.444418][ C0] ? dst_alloc+0x15c/0x1d0 [ 57.449768][ C0] kmem_cache_alloc+0x44/0x260 [ 57.454898][ C0] ? ipv6_sysctl_rtcache_flush+0x100/0x100 [ 57.461110][ C0] dst_alloc+0x15c/0x1d0 [ 57.466251][ C0] icmp6_dst_alloc+0xec/0x520 [ 57.471739][ C0] ? security_sk_classify_flow+0x7b/0x90 [ 57.477736][ C0] ? icmpv6_flow_init+0xd2/0x130 [ 57.483520][ C0] ndisc_send_skb+0x2a9/0xcf0 [ 57.489114][ C0] ? __x64_sys_sendto+0xe5/0x100 [ 57.494327][ C0] ? x64_sys_call+0x178/0x9a0 [ 57.499363][ C0] ? do_syscall_64+0x4c/0xa0 [ 57.504036][ C0] ? entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 57.510113][ C0] ? ndisc_alloc_skb+0x290/0x290 [ 57.515229][ C0] ? ndisc_send_rs+0x61f/0x960 [ 57.520073][ C0] ? memcpy+0x56/0x70 [ 57.524053][ C0] ndisc_send_rs+0x711/0x960 [ 57.528809][ C0] addrconf_rs_timer+0x35a/0x600 [ 57.534535][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 57.541167][ C0] ? _raw_spin_lock_irq+0x95/0xf0 [ 57.546225][ C0] ? _raw_spin_lock_irqsave+0x130/0x130 [ 57.551884][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 57.558383][ C0] call_timer_fn+0x38/0x290 [ 57.563162][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 57.569222][ C0] __run_timers+0x637/0x9a0 [ 57.573911][ C0] ? calc_index+0x200/0x200 [ 57.578429][ C0] ? sched_clock_cpu+0x18/0x3d0 [ 57.583388][ C0] run_timer_softirq+0x6a/0xf0 [ 57.588209][ C0] handle_softirqs+0x250/0x560 [ 57.592966][ C0] __irq_exit_rcu+0x52/0xf0 [ 57.597640][ C0] irq_exit_rcu+0x9/0x10 [ 57.601887][ C0] sysvec_apic_timer_interrupt+0xa9/0xc0 [ 57.607694][ C0] [ 57.610618][ C0] [ 57.613552][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 57.619704][ C0] RIP: 0010:__kasan_check_read+0x0/0x20 [ 57.625750][ C0] Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 c7 c7 a1 c2 e7 85 eb 0a 48 c7 c7 fd 95 dc 85 48 89 de e8 37 8a 01 03 45 31 ff eb d1 00 00 <55> 48 89 e5 89 f6 48 8b 4d 08 31 d2 e8 af ed ff ff 5d c3 66 2e 0f [ 57.645974][ C0] RSP: 0018:ffffc900009a76a8 EFLAGS: 00000293 [ 57.653323][ C0] RAX: ffffffff8152422c RBX: ffffffff8564bda0 RCX: ffff88810d7b8000 [ 57.664762][ C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff86711f80 [ 57.674317][ C0] RBP: ffffc900009a76b0 R08: 0000000000000003 R09: 0000000000000004 [ 57.682480][ C0] R10: dffffc0000000000 R11: fffffbfff0ce23f0 R12: dffffc0000000000 [ 57.690615][ C0] R13: 0000000000000200 R14: dffffc0000000004 R15: 1ffff92000134ed8 [ 57.698772][ C0] ? __printk_wait_on_cpu_lock+0x2c/0x40 [ 57.705362][ C0] ? __printk_wait_on_cpu_lock+0x1c/0x40 [ 57.710992][ C0] dump_stack_lvl+0xce/0x170 [ 57.715591][ C0] ? show_regs_print_info+0x20/0x20 [ 57.720807][ C0] ? prandom_u32+0x24d/0x290 [ 57.725483][ C0] dump_stack+0x15/0x20 [ 57.729630][ C0] should_fail+0x3ab/0x500 [ 57.734058][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 57.739381][ C0] __should_failslab+0xa4/0xe0 [ 57.744168][ C0] should_failslab+0x9/0x20 [ 57.748687][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 57.753618][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 57.758897][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 57.764272][ C0] __kmalloc_track_caller+0x6c/0x2c0 [ 57.769816][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 57.775104][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 57.780387][ C0] __alloc_skb+0x210/0x730 [ 57.784885][ C0] alloc_skb_with_frags+0xa8/0x620 [ 57.790166][ C0] ? memcpy+0x56/0x70 [ 57.794174][ C0] sock_alloc_send_pskb+0x87f/0x9a0 [ 57.799545][ C0] ? sock_kzfree_s+0x60/0x60 [ 57.804225][ C0] ? __kasan_check_write+0x14/0x20 [ 57.809329][ C0] ? _raw_spin_lock+0x94/0xf0 [ 57.813999][ C0] ? _raw_spin_trylock_bh+0x150/0x150 [ 57.819459][ C0] unix_dgram_sendmsg+0x6f3/0x19b0 [ 57.824750][ C0] ? unix_dgram_poll+0x6c0/0x6c0 [ 57.829777][ C0] ? security_socket_sendmsg+0x82/0xa0 [ 57.835418][ C0] __sys_sendto+0x46d/0x620 [ 57.839923][ C0] ? __ia32_sys_getpeername+0x90/0x90 [ 57.845284][ C0] ? __kasan_check_write+0x14/0x20 [ 57.850383][ C0] __x64_sys_sendto+0xe5/0x100 [ 57.855137][ C0] x64_sys_call+0x178/0x9a0 [ 57.859898][ C0] do_syscall_64+0x4c/0xa0 [ 57.864322][ C0] ? clear_bhb_loop+0x50/0xa0 [ 57.869268][ C0] ? clear_bhb_loop+0x50/0xa0 [ 57.873935][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 57.880087][ C0] RIP: 0033:0x7fca11087407 [ 57.884581][ C0] Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 57.905159][ C0] RSP: 002b:00007ffe548605a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 57.913831][ C0] RAX: ffffffffffffffda RBX: 00007fca10f37c80 RCX: 00007fca11087407 [ 57.921968][ C0] RDX: 000000000000005b RSI: 00007ffe548606e0 RDI: 0000000000000003 [ 57.929931][ C0] RBP: 00007ffe54860b10 R08: 0000000000000000 R09: 0000000000000000 [ 57.937978][ C0] R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffe54860b28 [ 57.945945][ C0] R13: 00007ffe548606e0 R14: 0000000000000040 R15: 00007ffe548606e0 [ 57.955021][ C0] [ 57.958166][ T45] CPU: 1 PID: 45 Comm: kworker/u4:2 Not tainted syzkaller #0 [ 57.958255][ C0] FAULT_INJECTION: forcing a failure. [ 57.958255][ C0] name failslab, interval 1, probability 10, space 0, times 58 [ 57.965719][ T45] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 57.965732][ T45] Workqueue: netns cleanup_net [ 57.965755][ T45] Call Trace: [ 57.996824][ T45] [ 58.000013][ T45] __dump_stack+0x21/0x30 [ 58.004613][ T45] dump_stack_lvl+0x110/0x170 [ 58.009671][ T45] ? show_regs_print_info+0x20/0x20 [ 58.014887][ T45] ? prandom_u32+0x24d/0x290 [ 58.019599][ T45] dump_stack+0x15/0x20 [ 58.023780][ T45] should_fail+0x3ab/0x500 [ 58.028189][ T45] ? __neigh_notify+0x84/0x130 [ 58.033645][ T45] __should_failslab+0xa4/0xe0 [ 58.038502][ T45] should_failslab+0x9/0x20 [ 58.043025][ T45] slab_pre_alloc_hook+0x39/0xd0 [ 58.048061][ T45] ? __neigh_notify+0x84/0x130 [ 58.052900][ T45] ? __neigh_notify+0x84/0x130 [ 58.057739][ T45] __kmalloc_track_caller+0x6c/0x2c0 [ 58.063118][ T45] ? __neigh_notify+0x84/0x130 [ 58.067876][ T45] ? __neigh_notify+0x84/0x130 [ 58.072750][ T45] __alloc_skb+0x210/0x730 [ 58.077159][ T45] __neigh_notify+0x84/0x130 [ 58.081743][ T45] neigh_cleanup_and_release+0x2c/0x1a0 [ 58.087891][ T45] neigh_flush_dev+0x667/0x810 [ 58.093667][ T45] ? __kasan_check_write+0x14/0x20 [ 58.098795][ T45] __neigh_ifdown+0x3f/0x3a0 [ 58.103558][ T45] neigh_ifdown+0x1f/0x30 [ 58.108235][ T45] rt6_disable_ip+0x6a5/0x730 [ 58.113084][ T45] ? fib6_ifdown+0x4e0/0x4e0 [ 58.118228][ T45] ? __kasan_check_read+0x11/0x20 [ 58.123262][ T45] addrconf_ifdown+0x144/0x1910 [ 58.128583][ T45] ? detach_if_pending+0xf5/0x300 [ 58.134173][ T45] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 58.140554][ T45] ? addrconf_cleanup+0x1c0/0x1c0 [ 58.146539][ T45] ? __kasan_check_write+0x14/0x20 [ 58.152490][ T45] ? mutex_unlock+0x8f/0x230 [ 58.157327][ T45] ? __mutex_lock_slowpath+0x10/0x10 [ 58.162782][ T45] ? macsec_notify+0x10d/0x4c0 [ 58.167982][ T45] ? nf_nat_masq_schedule+0x4d0/0x4d0 [ 58.173984][ T45] ? masq_device_event+0xd0/0xd0 [ 58.179808][ T45] addrconf_notify+0x3bd/0xe00 [ 58.184778][ T45] raw_notifier_call_chain+0x90/0x100 [ 58.190255][ T45] dev_close_many+0x325/0x4d0 [ 58.195025][ T45] ? __dev_open+0x500/0x500 [ 58.199618][ T45] ? _raw_spin_lock_irq+0x95/0xf0 [ 58.204680][ T45] ? __kasan_check_read+0x11/0x20 [ 58.209898][ T45] unregister_netdevice_many+0x477/0x1a00 [ 58.215615][ T45] ? wait_for_common+0x355/0x410 [ 58.220542][ T45] ? alloc_netdev_mqs+0xe20/0xe20 [ 58.225568][ T45] ? unregister_netdevice_queue+0x17c/0x320 [ 58.231601][ T45] ? list_netdevice+0x4c0/0x4c0 [ 58.236540][ T45] ip6gre_exit_batch_net+0x5ca/0x620 [ 58.241925][ T45] ? ip6gre_init_net+0x340/0x340 [ 58.246856][ T45] ? ip6gre_init_net+0x340/0x340 [ 58.252497][ T45] cleanup_net+0x605/0xae0 [ 58.256918][ T45] ? ops_init+0x470/0x470 [ 58.261249][ T45] process_one_work+0x6c8/0xbb0 [ 58.266093][ T45] worker_thread+0xaa0/0x1250 [ 58.270986][ T45] ? __kasan_check_read+0x11/0x20 [ 58.276098][ T45] kthread+0x3f5/0x4f0 [ 58.280329][ T45] ? worker_clr_flags+0x190/0x190 [ 58.285486][ T45] ? kthread_blkcg+0xd0/0xd0 [ 58.290420][ T45] ret_from_fork+0x1f/0x30 [ 58.294824][ T45] [ 58.297837][ C0] CPU: 0 PID: 89 Comm: klogd Not tainted syzkaller #0 [ 58.298660][ T63] FAULT_INJECTION: forcing a failure. [ 58.298660][ T63] name failslab, interval 1, probability 10, space 0, times 56 [ 58.304639][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 58.304658][ C0] Call Trace: [ 58.330985][ C0] [ 58.334001][ C0] __dump_stack+0x21/0x30 [ 58.338325][ C0] dump_stack_lvl+0x110/0x170 [ 58.342992][ C0] ? show_regs_print_info+0x20/0x20 [ 58.348181][ C0] ? prandom_u32+0x24d/0x290 [ 58.352764][ C0] dump_stack+0x15/0x20 [ 58.357001][ C0] should_fail+0x3ab/0x500 [ 58.361443][ C0] __should_failslab+0xa4/0xe0 [ 58.366201][ C0] should_failslab+0x9/0x20 [ 58.370778][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 58.376149][ C0] kmem_cache_alloc_trace+0x48/0x270 [ 58.381795][ C0] ? dst_cow_metrics_generic+0x55/0x1c0 [ 58.388159][ C0] dst_cow_metrics_generic+0x55/0x1c0 [ 58.393803][ C0] icmp6_dst_alloc+0x35f/0x520 [ 58.398671][ C0] ndisc_send_skb+0x2a9/0xcf0 [ 58.403349][ C0] ? __x64_sys_sendto+0xe5/0x100 [ 58.408288][ C0] ? x64_sys_call+0x178/0x9a0 [ 58.412985][ C0] ? do_syscall_64+0x4c/0xa0 [ 58.417569][ C0] ? entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 58.423805][ C0] ? ndisc_alloc_skb+0x290/0x290 [ 58.426576][ T26] FAULT_INJECTION: forcing a failure. [ 58.426576][ T26] name failslab, interval 1, probability 10, space 0, times 56 [ 58.428865][ C0] ndisc_send_rs+0x711/0x960 [ 58.446362][ C0] addrconf_rs_timer+0x35a/0x600 [ 58.451691][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 58.457849][ C0] ? _raw_spin_lock_irq+0x95/0xf0 [ 58.463318][ C0] ? _raw_spin_lock_irqsave+0x130/0x130 [ 58.468857][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 58.474916][ C0] call_timer_fn+0x38/0x290 [ 58.479691][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 58.486018][ C0] __run_timers+0x637/0x9a0 [ 58.491005][ C0] ? calc_index+0x200/0x200 [ 58.495509][ C0] ? sched_clock_cpu+0x18/0x3d0 [ 58.500803][ C0] run_timer_softirq+0x6a/0xf0 [ 58.505760][ C0] handle_softirqs+0x250/0x560 [ 58.510614][ C0] __irq_exit_rcu+0x52/0xf0 [ 58.515377][ C0] irq_exit_rcu+0x9/0x10 [ 58.519996][ C0] sysvec_apic_timer_interrupt+0xa9/0xc0 [ 58.525719][ C0] [ 58.528761][ C0] [ 58.531874][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 58.538030][ C0] RIP: 0010:__kasan_check_read+0x0/0x20 [ 58.543571][ C0] Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 c7 c7 a1 c2 e7 85 eb 0a 48 c7 c7 fd 95 dc 85 48 89 de e8 37 8a 01 03 45 31 ff eb d1 00 00 <55> 48 89 e5 89 f6 48 8b 4d 08 31 d2 e8 af ed ff ff 5d c3 66 2e 0f [ 58.563879][ C0] RSP: 0018:ffffc900009a76a8 EFLAGS: 00000293 [ 58.570227][ C0] RAX: ffffffff8152422c RBX: ffffffff8564bda0 RCX: ffff88810d7b8000 [ 58.578724][ C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff86711f80 [ 58.586872][ C0] RBP: ffffc900009a76b0 R08: 0000000000000003 R09: 0000000000000004 [ 58.595130][ C0] R10: dffffc0000000000 R11: fffffbfff0ce23f0 R12: dffffc0000000000 [ 58.603986][ C0] R13: 0000000000000200 R14: dffffc0000000004 R15: 1ffff92000134ed8 [ 58.612964][ C0] ? __printk_wait_on_cpu_lock+0x2c/0x40 [ 58.618966][ C0] ? __printk_wait_on_cpu_lock+0x1c/0x40 [ 58.624853][ C0] dump_stack_lvl+0xce/0x170 [ 58.629621][ C0] ? show_regs_print_info+0x20/0x20 [ 58.635870][ C0] ? prandom_u32+0x24d/0x290 [ 58.640550][ C0] dump_stack+0x15/0x20 [ 58.644952][ C0] should_fail+0x3ab/0x500 [ 58.650003][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 58.655380][ C0] __should_failslab+0xa4/0xe0 [ 58.660340][ C0] should_failslab+0x9/0x20 [ 58.664845][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 58.670080][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 58.675450][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 58.680901][ C0] __kmalloc_track_caller+0x6c/0x2c0 [ 58.686176][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 58.691796][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 58.697075][ C0] __alloc_skb+0x210/0x730 [ 58.701610][ C0] alloc_skb_with_frags+0xa8/0x620 [ 58.706714][ C0] ? memcpy+0x56/0x70 [ 58.710713][ C0] sock_alloc_send_pskb+0x87f/0x9a0 [ 58.715928][ C0] ? sock_kzfree_s+0x60/0x60 [ 58.720506][ C0] ? __kasan_check_write+0x14/0x20 [ 58.725609][ C0] ? _raw_spin_lock+0x94/0xf0 [ 58.730450][ C0] ? _raw_spin_trylock_bh+0x150/0x150 [ 58.735820][ C0] unix_dgram_sendmsg+0x6f3/0x19b0 [ 58.741039][ C0] ? unix_dgram_poll+0x6c0/0x6c0 [ 58.745982][ C0] ? security_socket_sendmsg+0x82/0xa0 [ 58.751524][ C0] __sys_sendto+0x46d/0x620 [ 58.756013][ C0] ? __ia32_sys_getpeername+0x90/0x90 [ 58.761648][ C0] ? __kasan_check_write+0x14/0x20 [ 58.767190][ C0] __x64_sys_sendto+0xe5/0x100 [ 58.772040][ C0] x64_sys_call+0x178/0x9a0 [ 58.776545][ C0] do_syscall_64+0x4c/0xa0 [ 58.780952][ C0] ? clear_bhb_loop+0x50/0xa0 [ 58.786226][ C0] ? clear_bhb_loop+0x50/0xa0 [ 58.790911][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 58.796938][ C0] RIP: 0033:0x7fca11087407 [ 58.801445][ C0] Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 58.821621][ C0] RSP: 002b:00007ffe548605a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 58.830044][ C0] RAX: ffffffffffffffda RBX: 00007fca10f37c80 RCX: 00007fca11087407 [ 58.838116][ C0] RDX: 000000000000005b RSI: 00007ffe548606e0 RDI: 0000000000000003 [ 58.846257][ C0] RBP: 00007ffe54860b10 R08: 0000000000000000 R09: 0000000000000000 [ 58.854360][ C0] R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffe54860b28 [ 58.862431][ C0] R13: 00007ffe548606e0 R14: 0000000000000040 R15: 00007ffe548606e0 [ 58.872190][ C0] [ 58.875389][ T374] CPU: 1 PID: 374 Comm: kthreadd Not tainted syzkaller #0 [ 58.875513][ C0] FAULT_INJECTION: forcing a failure. [ 58.875513][ C0] name failslab, interval 1, probability 10, space 0, times 55 [ 58.883502][ T374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 58.909833][ T374] Call Trace: [ 58.913205][ T374] [ 58.916129][ T374] __dump_stack+0x21/0x30 [ 58.921119][ T374] dump_stack_lvl+0x110/0x170 [ 58.927914][ T374] ? show_regs_print_info+0x20/0x20 [ 58.933572][ T374] ? prandom_u32+0x24d/0x290 [ 58.939318][ T374] dump_stack+0x15/0x20 [ 58.944325][ T374] should_fail+0x3ab/0x500 [ 58.949548][ T374] __should_failslab+0xa4/0xe0 [ 58.954521][ T374] should_failslab+0x9/0x20 [ 58.959388][ T374] slab_pre_alloc_hook+0x39/0xd0 [ 58.965521][ T374] kmem_cache_alloc_trace+0x48/0x270 [ 58.972059][ T374] ? kthread+0x11c/0x4f0 [ 58.976505][ T374] ? recalc_sigpending+0x1ac/0x230 [ 58.982983][ T374] kthread+0x11c/0x4f0 [ 58.987400][ T374] ? worker_clr_flags+0x190/0x190 [ 58.994804][ T374] ? kthread_blkcg+0xd0/0xd0 [ 58.999493][ T374] ret_from_fork+0x1f/0x30 [ 59.005429][ T374] [ 59.008983][ C0] CPU: 0 PID: 89 Comm: klogd Not tainted syzkaller #0 [ 59.015969][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 59.027594][ C0] Call Trace: [ 59.030957][ C0] [ 59.033794][ C0] __dump_stack+0x21/0x30 [ 59.038116][ C0] dump_stack_lvl+0x110/0x170 [ 59.043046][ C0] ? show_regs_print_info+0x20/0x20 [ 59.048320][ C0] ? prandom_u32+0x24d/0x290 [ 59.053515][ C0] dump_stack+0x15/0x20 [ 59.057769][ C0] should_fail+0x3ab/0x500 [ 59.062451][ C0] __should_failslab+0xa4/0xe0 [ 59.067494][ C0] should_failslab+0x9/0x20 [ 59.072073][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 59.077013][ C0] ? dst_alloc+0x15c/0x1d0 [ 59.081513][ C0] kmem_cache_alloc+0x44/0x260 [ 59.086266][ C0] ? ipv6_sysctl_rtcache_flush+0x100/0x100 [ 59.092068][ C0] dst_alloc+0x15c/0x1d0 [ 59.096828][ C0] icmp6_dst_alloc+0xec/0x520 [ 59.101584][ C0] ? security_sk_classify_flow+0x7b/0x90 [ 59.107227][ C0] ? icmpv6_flow_init+0xd2/0x130 [ 59.112153][ C0] ndisc_send_skb+0x2a9/0xcf0 [ 59.116818][ C0] ? __x64_sys_sendto+0xe5/0x100 [ 59.122221][ C0] ? x64_sys_call+0x178/0x9a0 [ 59.127262][ C0] ? do_syscall_64+0x4c/0xa0 [ 59.132010][ C0] ? entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 59.138345][ C0] ? ndisc_alloc_skb+0x290/0x290 [ 59.143675][ C0] ? skb_put+0x10a/0x1f0 [ 59.148021][ C0] ndisc_send_rs+0x711/0x960 [ 59.152620][ C0] ? ndisc_send_rs+0x131/0x960 [ 59.157590][ C0] addrconf_rs_timer+0x35a/0x600 [ 59.162951][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 59.169307][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 59.175601][ C0] call_timer_fn+0x38/0x290 [ 59.180111][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 59.186398][ C0] __run_timers+0x637/0x9a0 [ 59.191096][ C0] ? calc_index+0x200/0x200 [ 59.195847][ C0] ? sched_clock_cpu+0x18/0x3d0 [ 59.200699][ C0] run_timer_softirq+0x6a/0xf0 [ 59.205468][ C0] handle_softirqs+0x250/0x560 [ 59.210263][ C0] __irq_exit_rcu+0x52/0xf0 [ 59.214750][ C0] irq_exit_rcu+0x9/0x10 [ 59.219262][ C0] sysvec_apic_timer_interrupt+0xa9/0xc0 [ 59.224899][ C0] [ 59.227864][ C0] [ 59.230785][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 59.236922][ C0] RIP: 0010:__kasan_check_read+0x0/0x20 [ 59.243764][ C0] Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 c7 c7 a1 c2 e7 85 eb 0a 48 c7 c7 fd 95 dc 85 48 89 de e8 37 8a 01 03 45 31 ff eb d1 00 00 <55> 48 89 e5 89 f6 48 8b 4d 08 31 d2 e8 af ed ff ff 5d c3 66 2e 0f [ 59.264945][ C0] RSP: 0018:ffffc900009a76a8 EFLAGS: 00000293 [ 59.271277][ C0] RAX: ffffffff8152422c RBX: ffffffff8564bda0 RCX: ffff88810d7b8000 [ 59.279320][ C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff86711f80 [ 59.287276][ C0] RBP: ffffc900009a76b0 R08: 0000000000000003 R09: 0000000000000004 [ 59.295940][ C0] R10: dffffc0000000000 R11: fffffbfff0ce23f0 R12: dffffc0000000000 [ 59.303982][ C0] R13: 0000000000000200 R14: dffffc0000000004 R15: 1ffff92000134ed8 [ 59.311937][ C0] ? __printk_wait_on_cpu_lock+0x2c/0x40 [ 59.317655][ C0] ? __printk_wait_on_cpu_lock+0x1c/0x40 [ 59.323534][ C0] dump_stack_lvl+0xce/0x170 [ 59.328130][ C0] ? show_regs_print_info+0x20/0x20 [ 59.333399][ C0] ? prandom_u32+0x24d/0x290 [ 59.337979][ C0] dump_stack+0x15/0x20 [ 59.342123][ C0] should_fail+0x3ab/0x500 [ 59.347073][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 59.352587][ C0] __should_failslab+0xa4/0xe0 [ 59.357483][ C0] should_failslab+0x9/0x20 [ 59.362094][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 59.367158][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 59.373468][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 59.379279][ C0] __kmalloc_track_caller+0x6c/0x2c0 [ 59.386390][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 59.391877][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 59.397520][ C0] __alloc_skb+0x210/0x730 [ 59.402036][ C0] alloc_skb_with_frags+0xa8/0x620 [ 59.407229][ C0] ? memcpy+0x56/0x70 [ 59.411376][ C0] sock_alloc_send_pskb+0x87f/0x9a0 [ 59.416589][ C0] ? sock_kzfree_s+0x60/0x60 [ 59.421436][ C0] ? __kasan_check_write+0x14/0x20 [ 59.426646][ C0] ? _raw_spin_lock+0x94/0xf0 [ 59.431312][ C0] ? _raw_spin_trylock_bh+0x150/0x150 [ 59.436851][ C0] unix_dgram_sendmsg+0x6f3/0x19b0 [ 59.442062][ C0] ? unix_dgram_poll+0x6c0/0x6c0 [ 59.447085][ C0] ? security_socket_sendmsg+0x82/0xa0 [ 59.452711][ C0] __sys_sendto+0x46d/0x620 [ 59.457726][ C0] ? __ia32_sys_getpeername+0x90/0x90 [ 59.463439][ C0] ? __kasan_check_write+0x14/0x20 [ 59.468908][ C0] __x64_sys_sendto+0xe5/0x100 [ 59.473669][ C0] x64_sys_call+0x178/0x9a0 [ 59.478424][ C0] do_syscall_64+0x4c/0xa0 [ 59.482847][ C0] ? clear_bhb_loop+0x50/0xa0 [ 59.487860][ C0] ? clear_bhb_loop+0x50/0xa0 [ 59.492615][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 59.498576][ C0] RIP: 0033:0x7fca11087407 [ 59.502977][ C0] Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 59.522656][ C0] RSP: 002b:00007ffe548605a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 59.531841][ C0] RAX: ffffffffffffffda RBX: 00007fca10f37c80 RCX: 00007fca11087407 [ 59.539801][ C0] RDX: 000000000000005b RSI: 00007ffe548606e0 RDI: 0000000000000003 [ 59.548106][ C0] RBP: 00007ffe54860b10 R08: 0000000000000000 R09: 0000000000000000 [ 59.556514][ C0] R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffe54860b28 [ 59.564473][ C0] R13: 00007ffe548606e0 R14: 0000000000000040 R15: 00007ffe548606e0 [ 59.572440][ C0] [ 59.575838][ C0] FAULT_INJECTION: forcing a failure. [ 59.575838][ C0] name failslab, interval 1, probability 10, space 0, times 54 [ 59.575843][ T63] CPU: 1 PID: 63 Comm: jbd2/sda1-8 Not tainted syzkaller #0 [ 59.596140][ T63] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 59.606463][ T63] Call Trace: [ 59.609731][ T63] [ 59.612735][ T63] __dump_stack+0x21/0x30 [ 59.617060][ T63] dump_stack_lvl+0x110/0x170 [ 59.621743][ T63] ? show_regs_print_info+0x20/0x20 [ 59.626931][ T63] ? prandom_u32+0x24d/0x290 [ 59.631527][ T63] dump_stack+0x15/0x20 [ 59.636058][ T63] should_fail+0x3ab/0x500 [ 59.640666][ T63] __should_failslab+0xa4/0xe0 [ 59.645624][ T63] should_failslab+0x9/0x20 [ 59.651198][ T63] slab_pre_alloc_hook+0x39/0xd0 [ 59.656258][ T63] ? mempool_alloc_slab+0x1d/0x30 [ 59.661368][ T63] kmem_cache_alloc+0x44/0x260 [ 59.666317][ T63] ? submit_bio_noacct+0x762/0x800 [ 59.671439][ T63] ? mempool_free+0x330/0x330 [ 59.676118][ T63] mempool_alloc_slab+0x1d/0x30 [ 59.680965][ T63] mempool_alloc+0x167/0x4c0 [ 59.685551][ T63] ? chksum_update+0x47/0xa0 [ 59.690502][ T63] ? fscrypt_set_bio_crypt_ctx+0x179/0x4f0 [ 59.696299][ T63] ? crypto_shash_update+0x216/0x300 [ 59.701587][ T63] ? mempool_resize+0x880/0x880 [ 59.706599][ T63] ? blkcg_set_ioprio+0x1f6/0x320 [ 59.711701][ T63] ? submit_bio+0x367/0x620 [ 59.716554][ T63] ? submit_bio_noacct+0x800/0x800 [ 59.721657][ T63] bio_alloc_bioset+0x124/0x910 [ 59.726510][ T63] submit_bh_wbc+0x1c2/0x680 [ 59.731104][ T63] submit_bh+0x2a/0x40 [ 59.735335][ T63] jbd2_journal_commit_transaction+0x2461/0x5650 [ 59.741656][ T63] ? jbd2_journal_finish_inode_data_buffers+0xb0/0xb0 [ 59.748579][ T63] ? __switch_to+0x56c/0x1070 [ 59.753333][ T63] ? compat_start_thread+0x20/0x20 [ 59.758435][ T63] ? _raw_spin_unlock+0x4d/0x70 [ 59.763360][ T63] ? _raw_spin_lock+0xf0/0xf0 [ 59.768621][ T63] ? __kasan_check_write+0x14/0x20 [ 59.773757][ T63] ? _raw_spin_lock_irqsave+0xc2/0x130 [ 59.779610][ T63] ? _raw_spin_lock+0xf0/0xf0 [ 59.784813][ T63] ? detach_if_pending+0xf5/0x300 [ 59.789839][ T63] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 59.795638][ T63] ? del_timer_sync+0x144/0x1a0 [ 59.800522][ T63] kjournald2+0x43d/0x860 [ 59.806080][ T63] ? jbd2_seq_info_show+0x5c0/0x5c0 [ 59.812144][ T63] ? io_schedule+0xe0/0xe0 [ 59.816726][ T63] ? __kasan_check_read+0x11/0x20 [ 59.821837][ T63] ? __kthread_parkme+0xab/0x1f0 [ 59.826820][ T63] kthread+0x3f5/0x4f0 [ 59.830964][ T63] ? jbd2_seq_info_show+0x5c0/0x5c0 SYZFAIL: pipe failed (errno 12: Cannot allocate memory) [ 59.836521][ T63] ? kthread_blkcg+0xd0/0xd0 [ 59.841768][ T63] ret_from_fork+0x1f/0x30 [ 59.846631][ T63] [ 59.850015][ C0] CPU: 0 PID: 89 Comm: klogd Not tainted syzkaller #0 [ 59.856836][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 59.867241][ C0] Call Trace: [ 59.870512][ C0] [ 59.873356][ C0] __dump_stack+0x21/0x30 [ 59.877949][ C0] dump_stack_lvl+0x110/0x170 [ 59.882635][ C0] ? show_regs_print_info+0x20/0x20 [ 59.887841][ C0] ? prandom_u32+0x24d/0x290 [ 59.892430][ C0] dump_stack+0x15/0x20 [ 59.896629][ C0] should_fail+0x3ab/0x500 [ 59.901918][ C0] __should_failslab+0xa4/0xe0 [ 59.906683][ C0] should_failslab+0x9/0x20 [ 59.911277][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 59.916221][ C0] ? __alloc_skb+0xe4/0x730 [ 59.920727][ C0] kmem_cache_alloc+0x44/0x260 [ 59.925757][ C0] __alloc_skb+0xe4/0x730 [ 59.930167][ C0] ndisc_send_rs+0x310/0x960 [ 59.934942][ C0] addrconf_rs_timer+0x35a/0x600 [ 59.939960][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 59.946368][ C0] ? _raw_spin_lock_irq+0x95/0xf0 [ 59.951650][ C0] ? _raw_spin_lock_irqsave+0x130/0x130 [ 59.957447][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 59.963501][ C0] call_timer_fn+0x38/0x290 [ 59.968000][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 59.974079][ C0] __run_timers+0x637/0x9a0 [ 59.978581][ C0] ? calc_index+0x200/0x200 [ 59.983087][ C0] ? sched_clock_cpu+0x18/0x3d0 [ 59.988109][ C0] run_timer_softirq+0x6a/0xf0 [ 59.993298][ C0] handle_softirqs+0x250/0x560 [ 59.998255][ C0] __irq_exit_rcu+0x52/0xf0 [ 60.002925][ C0] irq_exit_rcu+0x9/0x10 [ 60.007167][ C0] sysvec_apic_timer_interrupt+0xa9/0xc0 [ 60.013002][ C0] [ 60.016115][ C0] [ 60.019033][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 60.025261][ C0] RIP: 0010:__kasan_check_read+0x0/0x20 [ 60.030894][ C0] Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 c7 c7 a1 c2 e7 85 eb 0a 48 c7 c7 fd 95 dc 85 48 89 de e8 37 8a 01 03 45 31 ff eb d1 00 00 <55> 48 89 e5 89 f6 48 8b 4d 08 31 d2 e8 af ed ff ff 5d c3 66 2e 0f [ 60.050842][ C0] RSP: 0018:ffffc900009a76a8 EFLAGS: 00000293 [ 60.057447][ C0] RAX: ffffffff8152422c RBX: ffffffff8564bda0 RCX: ffff88810d7b8000 [ 60.066249][ C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff86711f80 [ 60.074396][ C0] RBP: ffffc900009a76b0 R08: 0000000000000003 R09: 0000000000000004 [ 60.082632][ C0] R10: dffffc0000000000 R11: fffffbfff0ce23f0 R12: dffffc0000000000 [ 60.091294][ C0] R13: 0000000000000200 R14: dffffc0000000004 R15: 1ffff92000134ed8 [ 60.100172][ C0] ? __printk_wait_on_cpu_lock+0x2c/0x40 [ 60.105929][ C0] ? __printk_wait_on_cpu_lock+0x1c/0x40 [ 60.112248][ C0] dump_stack_lvl+0xce/0x170 [ 60.117190][ C0] ? show_regs_print_info+0x20/0x20 [ 60.123545][ C0] ? prandom_u32+0x24d/0x290 [ 60.125634][ T63] FAULT_INJECTION: forcing a failure. [ 60.125634][ T63] name failslab, interval 1, probability 10, space 0, times 51 [ 60.129986][ C0] dump_stack+0x15/0x20 [ 60.147240][ C0] should_fail+0x3ab/0x500 [ 60.152770][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 60.159216][ C0] __should_failslab+0xa4/0xe0 [ 60.165242][ C0] should_failslab+0x9/0x20 [ 60.171195][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 60.177034][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 60.182690][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 60.188001][ C0] __kmalloc_track_caller+0x6c/0x2c0 [ 60.194087][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 60.200697][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 60.206834][ C0] __alloc_skb+0x210/0x730 [ 60.212804][ C0] alloc_skb_with_frags+0xa8/0x620 [ 60.218519][ C0] ? memcpy+0x56/0x70 [ 60.222679][ C0] sock_alloc_send_pskb+0x87f/0x9a0 [ 60.228750][ C0] ? sock_kzfree_s+0x60/0x60 [ 60.233549][ C0] ? __kasan_check_write+0x14/0x20 [ 60.238919][ C0] ? _raw_spin_lock+0x94/0xf0 [ 60.243800][ C0] ? _raw_spin_trylock_bh+0x150/0x150 [ 60.249179][ C0] unix_dgram_sendmsg+0x6f3/0x19b0 [ 60.254980][ C0] ? unix_dgram_poll+0x6c0/0x6c0 [ 60.260055][ C0] ? security_socket_sendmsg+0x82/0xa0 [ 60.265964][ C0] __sys_sendto+0x46d/0x620 [ 60.270574][ C0] ? __ia32_sys_getpeername+0x90/0x90 [ 60.275945][ C0] ? __kasan_check_write+0x14/0x20 [ 60.281147][ C0] __x64_sys_sendto+0xe5/0x100 [ 60.286095][ C0] x64_sys_call+0x178/0x9a0 [ 60.290705][ C0] do_syscall_64+0x4c/0xa0 [ 60.296192][ C0] ? clear_bhb_loop+0x50/0xa0 [ 60.301045][ C0] ? clear_bhb_loop+0x50/0xa0 [ 60.306439][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 60.312805][ C0] RIP: 0033:0x7fca11087407 [ 60.317490][ C0] Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 60.337306][ C0] RSP: 002b:00007ffe548605a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 60.345898][ C0] RAX: ffffffffffffffda RBX: 00007fca10f37c80 RCX: 00007fca11087407 [ 60.353883][ C0] RDX: 000000000000005b RSI: 00007ffe548606e0 RDI: 0000000000000003 [ 60.361960][ C0] RBP: 00007ffe54860b10 R08: 0000000000000000 R09: 0000000000000000 [ 60.370033][ C0] R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffe54860b28 [ 60.378001][ C0] R13: 00007ffe548606e0 R14: 0000000000000040 R15: 00007ffe548606e0 [ 60.385973][ C0] [ 60.388980][ T63] CPU: 1 PID: 63 Comm: jbd2/sda1-8 Not tainted syzkaller #0 [ 60.389063][ C0] FAULT_INJECTION: forcing a failure. [ 60.389063][ C0] name failslab, interval 1, probability 10, space 0, times 50 [ 60.396456][ T63] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 60.396469][ T63] Call Trace: [ 60.396474][ T63] [ 60.396480][ T63] __dump_stack+0x21/0x30 [ 60.430266][ T63] dump_stack_lvl+0x110/0x170 [ 60.435026][ T63] ? show_regs_print_info+0x20/0x20 [ 60.440381][ T63] ? prandom_u32+0x24d/0x290 [ 60.445049][ T63] dump_stack+0x15/0x20 [ 60.449363][ T63] should_fail+0x3ab/0x500 [ 60.453774][ T63] __should_failslab+0xa4/0xe0 [ 60.458560][ T63] should_failslab+0x9/0x20 [ 60.463055][ T63] slab_pre_alloc_hook+0x39/0xd0 [ 60.467985][ T63] ? mempool_alloc_slab+0x1d/0x30 [ 60.473002][ T63] kmem_cache_alloc+0x44/0x260 [ 60.477755][ T63] ? submit_bio_noacct+0x762/0x800 [ 60.482943][ T63] ? mempool_free+0x330/0x330 [ 60.487901][ T63] mempool_alloc_slab+0x1d/0x30 [ 60.493029][ T63] mempool_alloc+0x167/0x4c0 [ 60.498043][ T63] ? chksum_update+0x47/0xa0 [ 60.502709][ T63] ? fscrypt_set_bio_crypt_ctx+0x179/0x4f0 [ 60.508516][ T63] ? crypto_shash_update+0x216/0x300 [ 60.513968][ T63] ? mempool_resize+0x880/0x880 [ 60.518812][ T63] ? blkcg_set_ioprio+0x1f6/0x320 [ 60.523825][ T63] ? submit_bio+0x367/0x620 [ 60.528319][ T63] ? submit_bio_noacct+0x800/0x800 [ 60.533444][ T63] bio_alloc_bioset+0x124/0x910 [ 60.538515][ T63] submit_bh_wbc+0x1c2/0x680 [ 60.543227][ T63] submit_bh+0x2a/0x40 [ 60.547285][ T63] jbd2_journal_commit_transaction+0x2461/0x5650 [ 60.553720][ T63] ? jbd2_journal_finish_inode_data_buffers+0xb0/0xb0 [ 60.560759][ T63] ? __switch_to+0x56c/0x1070 [ 60.565459][ T63] ? compat_start_thread+0x20/0x20 [ 60.570824][ T63] ? _raw_spin_unlock+0x4d/0x70 [ 60.575686][ T63] ? _raw_spin_lock+0xf0/0xf0 [ 60.581445][ T63] ? __kasan_check_write+0x14/0x20 [ 60.587101][ T63] ? _raw_spin_lock_irqsave+0xc2/0x130 [ 60.592596][ T63] ? _raw_spin_lock+0xf0/0xf0 [ 60.597265][ T63] ? detach_if_pending+0xf5/0x300 [ 60.602286][ T63] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 60.608101][ T63] ? del_timer_sync+0x144/0x1a0 [ 60.612952][ T63] kjournald2+0x43d/0x860 [ 60.617273][ T63] ? jbd2_seq_info_show+0x5c0/0x5c0 [ 60.623266][ T63] ? io_schedule+0xe0/0xe0 [ 60.627708][ T63] ? __kasan_check_read+0x11/0x20 [ 60.632800][ T63] ? __kthread_parkme+0xab/0x1f0 [ 60.638337][ T63] kthread+0x3f5/0x4f0 [ 60.642593][ T63] ? jbd2_seq_info_show+0x5c0/0x5c0 [ 60.647985][ T63] ? kthread_blkcg+0xd0/0xd0 [ 60.652597][ T63] ret_from_fork+0x1f/0x30 [ 60.657215][ T63] [ 60.660342][ C0] CPU: 0 PID: 89 Comm: klogd Not tainted syzkaller #0 [ 60.668358][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 60.678862][ C0] Call Trace: [ 60.682142][ C0] [ 60.684984][ C0] __dump_stack+0x21/0x30 [ 60.689408][ C0] dump_stack_lvl+0x110/0x170 [ 60.694337][ C0] ? show_regs_print_info+0x20/0x20 [ 60.699615][ C0] ? prandom_u32+0x24d/0x290 [ 60.704210][ C0] dump_stack+0x15/0x20 [ 60.708365][ C0] should_fail+0x3ab/0x500 [ 60.713141][ C0] ? wg_packet_send_keepalive+0x62/0x1c0 [ 60.718970][ C0] __should_failslab+0xa4/0xe0 [ 60.724386][ C0] should_failslab+0x9/0x20 [ 60.730087][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 60.735203][ C0] ? wg_packet_send_keepalive+0x62/0x1c0 [ 60.741279][ C0] ? wg_packet_send_keepalive+0x62/0x1c0 [ 60.747129][ C0] __kmalloc_track_caller+0x6c/0x2c0 [ 60.752609][ C0] ? wg_packet_send_keepalive+0x62/0x1c0 [ 60.758350][ C0] ? wg_packet_send_keepalive+0x62/0x1c0 [ 60.764185][ C0] __alloc_skb+0x210/0x730 [ 60.768843][ C0] wg_packet_send_keepalive+0x62/0x1c0 [ 60.774885][ C0] ? wg_expired_send_persistent_keepalive+0x44/0x80 [ 60.782778][ C0] wg_expired_send_persistent_keepalive+0x53/0x80 [ 60.790118][ C0] ? wg_expired_zero_key_material+0x170/0x170 [ 60.796889][ C0] call_timer_fn+0x38/0x290 [ 60.801645][ C0] ? wg_expired_zero_key_material+0x170/0x170 [ 60.807843][ C0] __run_timers+0x637/0x9a0 [ 60.812384][ C0] ? calc_index+0x200/0x200 [ 60.817085][ C0] ? sched_clock_cpu+0x18/0x3d0 [ 60.822374][ C0] run_timer_softirq+0x6a/0xf0 [ 60.827127][ C0] handle_softirqs+0x250/0x560 [ 60.831875][ C0] __irq_exit_rcu+0x52/0xf0 [ 60.836473][ C0] irq_exit_rcu+0x9/0x10 [ 60.840737][ C0] sysvec_apic_timer_interrupt+0xa9/0xc0 [ 60.846442][ C0] [ 60.849355][ C0] [ 60.852361][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 60.858511][ C0] RIP: 0010:__kasan_check_read+0x0/0x20 [ 60.864397][ C0] Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 c7 c7 a1 c2 e7 85 eb 0a 48 c7 c7 fd 95 dc 85 48 89 de e8 37 8a 01 03 45 31 ff eb d1 00 00 <55> 48 89 e5 89 f6 48 8b 4d 08 31 d2 e8 af ed ff ff 5d c3 66 2e 0f [ 60.885354][ C0] RSP: 0018:ffffc900009a76a8 EFLAGS: 00000293 [ 60.892128][ C0] RAX: ffffffff8152422c RBX: ffffffff8564bda0 RCX: ffff88810d7b8000 [ 60.900174][ C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff86711f80 [ 60.908563][ C0] RBP: ffffc900009a76b0 R08: 0000000000000003 R09: 0000000000000004 [ 60.917975][ C0] R10: dffffc0000000000 R11: fffffbfff0ce23f0 R12: dffffc0000000000 [ 60.925951][ C0] R13: 0000000000000200 R14: dffffc0000000004 R15: 1ffff92000134ed8 [ 60.934097][ C0] ? __printk_wait_on_cpu_lock+0x2c/0x40 [ 60.939820][ C0] ? __printk_wait_on_cpu_lock+0x1c/0x40 [ 60.945452][ C0] dump_stack_lvl+0xce/0x170 [ 60.950449][ C0] ? show_regs_print_info+0x20/0x20 [ 60.955748][ C0] ? prandom_u32+0x24d/0x290 [ 60.960678][ C0] dump_stack+0x15/0x20 [ 60.964906][ C0] should_fail+0x3ab/0x500 [ 60.969701][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 60.975151][ C0] __should_failslab+0xa4/0xe0 [ 60.980268][ C0] should_failslab+0x9/0x20 [ 60.985647][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 60.990813][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 60.996701][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 61.002351][ C0] __kmalloc_track_caller+0x6c/0x2c0 [ 61.007839][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 61.013996][ C0] ? alloc_skb_with_frags+0xa8/0x620 [ 61.020237][ C0] __alloc_skb+0x210/0x730 [ 61.025282][ C0] alloc_skb_with_frags+0xa8/0x620 [ 61.030797][ C0] ? memcpy+0x56/0x70 [ 61.034892][ C0] sock_alloc_send_pskb+0x87f/0x9a0 [ 61.040550][ C0] ? sock_kzfree_s+0x60/0x60 [ 61.045239][ C0] ? __kasan_check_write+0x14/0x20 [ 61.050534][ C0] ? _raw_spin_lock+0x94/0xf0 [ 61.055422][ C0] ? _raw_spin_trylock_bh+0x150/0x150 [ 61.062227][ C0] unix_dgram_sendmsg+0x6f3/0x19b0 [ 61.067536][ C0] ? unix_dgram_poll+0x6c0/0x6c0 [ 61.074640][ C0] ? security_socket_sendmsg+0x82/0xa0 [ 61.080368][ C0] __sys_sendto+0x46d/0x620 [ 61.085320][ C0] ? __ia32_sys_getpeername+0x90/0x90 [ 61.091046][ C0] ? __kasan_check_write+0x14/0x20 [ 61.096200][ C0] __x64_sys_sendto+0xe5/0x100 [ 61.102172][ C0] x64_sys_call+0x178/0x9a0 [ 61.107174][ C0] do_syscall_64+0x4c/0xa0 [ 61.112103][ C0] ? clear_bhb_loop+0x50/0xa0 [ 61.117195][ C0] ? clear_bhb_loop+0x50/0xa0 [ 61.122160][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 61.128143][ C0] RIP: 0033:0x7fca11087407 [ 61.132759][ C0] Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 61.153432][ C0] RSP: 002b:00007ffe548605a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 61.161928][ C0] RAX: ffffffffffffffda RBX: 00007fca10f37c80 RCX: 00007fca11087407 [ 61.170591][ C0] RDX: 000000000000005b RSI: 00007ffe548606e0 RDI: 0000000000000003 [ 61.179372][ C0] RBP: 00007ffe54860b10 R08: 0000000000000000 R09: 0000000000000000 [ 61.187609][ C0] R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffe54860b28 [ 61.195750][ C0] R13: 00007ffe548606e0 R14: 0000000000000040 R15: 00007ffe548606e0 [ 61.204591][ C0] [ 61.207978][ T33] FAULT_INJECTION: forcing a failure. [ 61.207978][ T33] name failslab, interval 1, probability 10, space 0, times 49 [ 61.208001][ T20] CPU: 0 PID: 20 Comm: kworker/0:1 Not tainted syzkaller #0 [ 61.222052][ T2] FAULT_INJECTION: forcing a failure. [ 61.222052][ T2] name failslab, interval 1, probability 10, space 0, times 49 [ 61.229827][ T20] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 61.229847][ T20] Workqueue: mld mld_ifc_work [ 61.229869][ T20] Call Trace: [ 61.229875][ T20] [ 61.229881][ T20] __dump_stack+0x21/0x30 [ 61.229899][ T20] dump_stack_lvl+0x110/0x170 [ 61.229912][ T20] ? show_regs_print_info+0x20/0x20 [ 61.291252][ T20] ? prandom_u32+0x24d/0x290 [ 61.296828][ T20] dump_stack+0x15/0x20 [ 61.303285][ T20] should_fail+0x3ab/0x500 [ 61.309425][ T20] __should_failslab+0xa4/0xe0 [ 61.315299][ T20] should_failslab+0x9/0x20 [ 61.319814][ T20] slab_pre_alloc_hook+0x39/0xd0 [ 61.325035][ T20] kmem_cache_alloc_trace+0x48/0x270 [ 61.330408][ T20] ? dst_cow_metrics_generic+0x55/0x1c0 [ 61.337026][ T20] dst_cow_metrics_generic+0x55/0x1c0 [ 61.343245][ T20] icmp6_dst_alloc+0x35f/0x520 [ 61.349257][ T20] mld_sendpack+0x4d9/0xba0 [ 61.354289][ T20] ? add_grec+0x1340/0x1340 [ 61.358835][ T20] ? add_grec+0xf70/0x1340 [ 61.364125][ T20] ? memcpy+0x56/0x70 [ 61.368573][ T20] ? wait_for_completion_killable_timeout+0x10/0x10 [ 61.375288][ T20] mld_ifc_work+0x7d7/0xc40 [ 61.379821][ T20] process_one_work+0x6c8/0xbb0 [ 61.384876][ T20] worker_thread+0xaa0/0x1250 [ 61.389909][ T20] ? __kasan_check_read+0x11/0x20 [ 61.395487][ T20] kthread+0x3f5/0x4f0 [ 61.400105][ T20] ? worker_clr_flags+0x190/0x190 [ 61.405230][ T20] ? kthread_blkcg+0xd0/0xd0 [ 61.409992][ T20] ret_from_fork+0x1f/0x30 [ 61.414537][ T20] [ 61.417669][ T33] CPU: 1 PID: 33 Comm: writeback Not tainted syzkaller #0 [ 61.419804][ T335] FAULT_INJECTION: forcing a failure. [ 61.419804][ T335] name failslab, interval 1, probability 10, space 0, times 48 [ 61.425272][ T33] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 61.448787][ T33] Workqueue: writeback wb_workfn (flush-8:0) [ 61.454959][ T33] Call Trace: [ 61.458330][ T33] [ 61.461338][ T33] __dump_stack+0x21/0x30 [ 61.465793][ T33] dump_stack_lvl+0x110/0x170 [ 61.470473][ T33] ? show_regs_print_info+0x20/0x20 [ 61.475834][ T33] dump_stack+0x15/0x20 [ 61.480059][ T33] should_fail+0x3ab/0x500 [ 61.484642][ T33] __should_failslab+0xa4/0xe0 [ 61.489395][ T33] should_failslab+0x9/0x20 [ 61.493972][ T33] slab_pre_alloc_hook+0x39/0xd0 [ 61.498905][ T33] ? ext4_init_io_end+0x29/0x130 [ 61.504030][ T33] kmem_cache_alloc+0x44/0x260 [ 61.508883][ T33] ext4_init_io_end+0x29/0x130 [ 61.513833][ T33] ext4_writepages+0xa49/0x30a0 [ 61.518727][ T33] ? blk_mq_get_driver_tag+0x920/0x920 [ 61.524270][ T33] ? ext4_readpage+0x220/0x220 [ 61.529352][ T33] ? dd_has_work+0x362/0x390 [ 61.534494][ T33] ? blk_mq_do_dispatch_sched+0xc0d/0xc90 [ 61.540306][ T33] ? ext4_readpage+0x220/0x220 [ 61.545256][ T33] do_writepages+0x476/0x6d0 [ 61.550121][ T33] ? __writepage+0x130/0x130 [ 61.554847][ T33] ? blk_mq_sched_dispatch_requests+0x14d/0x1c0 [ 61.561078][ T33] ? __kasan_check_write+0x14/0x20 [ 61.566182][ T33] ? _raw_spin_lock+0x94/0xf0 [ 61.570947][ T33] __writeback_single_inode+0xd9/0x9e0 [ 61.576637][ T33] ? wbc_attach_and_unlock_inode+0x194/0x5f0 [ 61.582615][ T33] writeback_sb_inodes+0x9f3/0x1610 [ 61.587984][ T33] ? queue_io+0x4b0/0x4b0 [ 61.592348][ T33] ? down_read_trylock+0x317/0x630 [ 61.597453][ T33] ? enqueue_timer+0x1b6/0x480 [ 61.602433][ T33] ? widen_string+0x42/0x360 [ 61.607016][ T33] __writeback_inodes_wb+0x127/0x400 [ 61.612309][ T33] writeback_inodes_wb+0x19d/0x240 [ 61.617420][ T33] ? trace_writeback_pages_written+0xf0/0xf0 [ 61.623506][ T33] ? kvm_sched_clock_read+0x18/0x40 [ 61.629647][ T33] ? kthread_data+0x50/0xc0 [ 61.634430][ T33] wb_workfn+0xea3/0xf30 [ 61.639560][ T33] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 61.646461][ T33] ? __set_cpus_allowed_ptr_locked+0x5cc/0x1020 [ 61.653159][ T33] ? inode_wait_for_writeback+0x220/0x220 [ 61.659408][ T33] ? __kasan_check_write+0x14/0x20 [ 61.666743][ T33] ? _raw_spin_lock+0x94/0xf0 [ 61.671606][ T33] ? _raw_spin_trylock_bh+0x150/0x150 [ 61.677584][ T33] ? _raw_spin_unlock+0x4d/0x70 [ 61.682637][ T33] process_one_work+0x6c8/0xbb0 [ 61.688092][ T33] rescuer_thread+0x73d/0xf80 [ 61.693032][ T33] ? rcu_free_pwq+0x30/0x30 [ 61.697536][ T33] ? __kasan_check_read+0x11/0x20 [ 61.702549][ T33] ? __kthread_parkme+0xab/0x1f0 [ 61.707491][ T33] kthread+0x3f5/0x4f0 [ 61.711549][ T33] ? rcu_free_pwq+0x30/0x30 [ 61.716131][ T33] ? kthread_blkcg+0xd0/0xd0 [ 61.720795][ T33] ret_from_fork+0x1f/0x30 [ 61.725225][ T33] [ 61.728241][ T335] CPU: 0 PID: 335 Comm: kworker/0:2 Not tainted syzkaller #0 [ 61.735624][ T335] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 61.746451][ T335] Workqueue: wg-kex-wg2 wg_packet_handshake_receive_worker [ 61.753769][ T335] Call Trace: [ 61.757040][ T335] [ 61.759975][ T335] __dump_stack+0x21/0x30 [ 61.764297][ T335] dump_stack_lvl+0x110/0x170 [ 61.768963][ T335] ? show_regs_print_info+0x20/0x20 [ 61.774428][ T335] ? prandom_u32+0x24d/0x290 [ 61.779241][ T335] dump_stack+0x15/0x20 [ 61.783476][ T335] should_fail+0x3ab/0x500 [ 61.787977][ T335] __should_failslab+0xa4/0xe0 [ 61.792913][ T335] should_failslab+0x9/0x20 [ 61.797601][ T335] slab_pre_alloc_hook+0x39/0xd0 [ 61.803407][ T335] kmem_cache_alloc_trace+0x48/0x270 [ 61.808700][ T335] ? wg_noise_handshake_begin_session+0xd5/0x740 [ 61.815293][ T335] wg_noise_handshake_begin_session+0xd5/0x740 [ 61.822387][ T335] ? ktime_get_coarse_with_offset+0x153/0x1a0 [ 61.828583][ T335] wg_packet_send_handshake_response+0x135/0x230 [ 61.835432][ T335] ? wg_packet_send_queued_handshake_initiation+0x210/0x210 [ 61.843771][ T335] ? wg_socket_set_peer_endpoint+0x4b5/0x970 [ 61.851586][ T335] wg_packet_handshake_receive_worker+0x512/0x910 [ 61.860785][ T335] process_one_work+0x6c8/0xbb0 [ 61.866658][ T335] worker_thread+0xaa0/0x1250 [ 61.872119][ T335] ? __kasan_check_read+0x11/0x20 [ 61.877136][ T335] kthread+0x3f5/0x4f0 [ 61.881209][ T335] ? worker_clr_flags+0x190/0x190 [ 61.887392][ T335] ? kthread_blkcg+0xd0/0xd0 [ 61.893323][ T335] ret_from_fork+0x1f/0x30 [ 61.898821][ T335] [ 61.902350][ T2] CPU: 1 PID: 2 Comm: kthreadd Not tainted syzkaller #0 [ 61.903752][ T20] FAULT_INJECTION: forcing a failure. [ 61.903752][ T20] name failslab, interval 1, probability 10, space 0, times 47 [ 61.910814][ T2] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 61.910831][ T2] Call Trace: [ 61.910837][ T2] [ 61.910844][ T2] __dump_stack+0x21/0x30 [ 61.910864][ T2] dump_stack_lvl+0x110/0x170 [ 61.956991][ T2] ? show_regs_print_info+0x20/0x20 [ 61.963183][ T2] ? prandom_u32+0x24d/0x290 [ 61.967975][ T2] dump_stack+0x15/0x20 [ 61.973154][ T2] should_fail+0x3ab/0x500 [ 61.978395][ T2] __should_failslab+0xa4/0xe0 [ 61.983618][ T2] should_failslab+0x9/0x20 [ 61.985548][ T63] FAULT_INJECTION: forcing a failure. [ 61.985548][ T63] name failslab, interval 1, probability 10, space 0, times 46 [ 61.988491][ T2] slab_pre_alloc_hook+0x39/0xd0 [ 62.006677][ T2] __kmalloc+0x6d/0x2c0 [ 62.010925][ T2] ? security_prepare_creds+0x4e/0x140 [ 62.016555][ T2] security_prepare_creds+0x4e/0x140 [ 62.022119][ T2] prepare_creds+0x428/0x610 [ 62.026793][ T2] copy_creds+0xe4/0x640 [ 62.031122][ T2] copy_process+0x7d5/0x3280 [ 62.035720][ T2] ? update_load_avg+0x442/0x1110 [ 62.040742][ T2] ? __pidfd_prepare+0x150/0x150 [ 62.046137][ T2] ? __switch_to+0x56c/0x1070 [ 62.051518][ T2] kernel_clone+0x233/0x960 [ 62.056210][ T2] ? create_io_thread+0x170/0x170 [ 62.061424][ T2] ? finish_task_switch+0x16b/0x790 [ 62.066614][ T2] ? kthread_blkcg+0xd0/0xd0 [ 62.071545][ T2] kernel_thread+0xfe/0x170 [ 62.076039][ T2] ? ptrace_event_pid+0x180/0x180 [ 62.081142][ T2] ? kthread_blkcg+0xd0/0xd0 [ 62.085733][ T2] ? _raw_spin_trylock_bh+0x150/0x150 [ 62.091094][ T2] ? __kasan_check_read+0x11/0x20 [ 62.096629][ T2] kthreadd+0x346/0x480 [ 62.101293][ T2] ? tokenize_frame_descr+0x93/0xc0 [ 62.106566][ T2] ? kthread_stop+0x3e0/0x3e0 [ 62.111231][ T2] ? _raw_spin_unlock_irq+0x4e/0x70 [ 62.116504][ T2] ? calculate_sigpending+0x7c/0x90 [ 62.122159][ T2] ? kthread_stop+0x3e0/0x3e0 [ 62.126928][ T2] ret_from_fork+0x1f/0x30 [ 62.131517][ T2] [ 62.134618][ T20] CPU: 0 PID: 20 Comm: kworker/0:1 Not tainted syzkaller #0 [ 62.142661][ T20] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 62.154045][ T20] Workqueue: mld mld_ifc_work [ 62.159230][ T20] Call Trace: [ 62.163131][ T20] [ 62.166161][ T20] __dump_stack+0x21/0x30 [ 62.170529][ T20] dump_stack_lvl+0x110/0x170 [ 62.175299][ T20] ? show_regs_print_info+0x20/0x20 [ 62.180753][ T20] ? prandom_u32+0x24d/0x290 [ 62.185768][ T20] dump_stack+0x15/0x20 [ 62.190274][ T20] should_fail+0x3ab/0x500 [ 62.194863][ T20] ? mld_newpack+0x143/0x9e0 [ 62.199448][ T20] __should_failslab+0xa4/0xe0 [ 62.204428][ T20] should_failslab+0x9/0x20 [ 62.208920][ T20] slab_pre_alloc_hook+0x39/0xd0 [ 62.213847][ T20] ? mld_newpack+0x143/0x9e0 [ 62.218421][ T20] ? mld_newpack+0x143/0x9e0 [ 62.223097][ T20] __kmalloc_track_caller+0x6c/0x2c0 [ 62.228475][ T20] ? mld_newpack+0x143/0x9e0 [ 62.233111][ T20] ? mld_newpack+0x143/0x9e0 [ 62.237719][ T20] __alloc_skb+0x210/0x730 [ 62.242140][ T20] mld_newpack+0x143/0x9e0 [ 62.246556][ T20] ? mld_sendpack+0xba0/0xba0 [ 62.251312][ T20] ? add_grec+0x1340/0x1340 [ 62.255798][ T20] ? add_grec+0xf70/0x1340 [ 62.260306][ T20] add_grec+0xee8/0x1340 [ 62.264724][ T20] ? wait_for_completion_killable_timeout+0x10/0x10 [ 62.272032][ T20] mld_ifc_work+0x728/0xc40 [ 62.276710][ T20] process_one_work+0x6c8/0xbb0 [ 62.281678][ T20] worker_thread+0xaa0/0x1250 [ 62.286443][ T20] ? __kasan_check_read+0x11/0x20 [ 62.291474][ T20] kthread+0x3f5/0x4f0 [ 62.295534][ T20] ? worker_clr_flags+0x190/0x190 [ 62.300718][ T20] ? kthread_blkcg+0xd0/0xd0 [ 62.305749][ T20] ret_from_fork+0x1f/0x30 [ 62.310179][ T20] [ 62.313206][ T26] CPU: 1 PID: 26 Comm: kworker/1:0 Not tainted syzkaller #0 [ 62.320487][ T26] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 62.330739][ T26] Workqueue: wg-kex-wg2 wg_packet_handshake_receive_worker [ 62.338025][ T26] Call Trace: [ 62.341400][ T26] [ 62.344355][ T26] __dump_stack+0x21/0x30 [ 62.348680][ T26] dump_stack_lvl+0x110/0x170 [ 62.353360][ T26] ? show_regs_print_info+0x20/0x20 [ 62.358647][ T26] ? prandom_u32+0x24d/0x290 [ 62.363430][ T26] dump_stack+0x15/0x20 [ 62.367678][ T26] should_fail+0x3ab/0x500 [ 62.372090][ T26] __should_failslab+0xa4/0xe0 [ 62.376861][ T26] should_failslab+0x9/0x20 [ 62.381453][ T26] slab_pre_alloc_hook+0x39/0xd0 [ 62.386572][ T26] kmem_cache_alloc_trace+0x48/0x270 [ 62.392018][ T26] ? wg_noise_handshake_begin_session+0xd5/0x740 [ 62.398335][ T26] wg_noise_handshake_begin_session+0xd5/0x740 [ 62.404662][ T26] ? ktime_get_coarse_with_offset+0x153/0x1a0 [ 62.410727][ T26] wg_packet_send_handshake_response+0x135/0x230 [ 62.417310][ T26] ? wg_packet_send_queued_handshake_initiation+0x210/0x210 [ 62.425135][ T26] ? wg_socket_set_peer_endpoint+0x314/0x970 [ 62.431130][ T26] wg_packet_handshake_receive_worker+0x512/0x910 [ 62.437549][ T26] process_one_work+0x6c8/0xbb0 [ 62.442389][ T26] worker_thread+0xaa0/0x1250 [ 62.447057][ T26] kthread+0x3f5/0x4f0 [ 62.451384][ T26] ? worker_clr_flags+0x190/0x190 [ 62.456396][ T26] ? kthread_blkcg+0xd0/0xd0 [ 62.461542][ T26] ret_from_fork+0x1f/0x30 [ 62.465964][ T26] [ 62.469071][ T63] CPU: 0 PID: 63 Comm: jbd2/sda1-8 Not tainted syzkaller #0 [ 62.469555][ T45] FAULT_INJECTION: forcing a failure. [ 62.469555][ T45] name failslab, interval 1, probability 10, space 0, times 45 [ 62.477681][ T63] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 62.477699][ T63] Call Trace: [ 62.477705][ T63] [ 62.477711][ T63] __dump_stack+0x21/0x30 [ 62.477732][ T63] dump_stack_lvl+0x110/0x170 [ 62.477745][ T63] ? show_regs_print_info+0x20/0x20 [ 62.477759][ T63] ? prandom_u32+0x24d/0x290 [ 62.526167][ T63] dump_stack+0x15/0x20 [ 62.530316][ T63] should_fail+0x3ab/0x500 [ 62.534720][ T63] __should_failslab+0xa4/0xe0 [ 62.535486][ T2] FAULT_INJECTION: forcing a failure. [ 62.535486][ T2] name failslab, interval 1, probability 10, space 0, times 44 [ 62.539468][ T63] should_failslab+0x9/0x20 [ 62.556768][ T63] slab_pre_alloc_hook+0x39/0xd0 [ 62.561705][ T63] ? mempool_alloc_slab+0x1d/0x30 [ 62.566813][ T63] kmem_cache_alloc+0x44/0x260 [ 62.572043][ T63] ? submit_bio_noacct+0x762/0x800 [ 62.577273][ T63] ? mempool_free+0x330/0x330 [ 62.582039][ T63] mempool_alloc_slab+0x1d/0x30 [ 62.586987][ T63] mempool_alloc+0x167/0x4c0 [ 62.591657][ T63] ? chksum_update+0x47/0xa0 [ 62.596365][ T63] ? fscrypt_set_bio_crypt_ctx+0x179/0x4f0 [ 62.602605][ T63] ? mempool_resize+0x880/0x880 [ 62.607625][ T63] ? blkcg_set_ioprio+0x1f6/0x320 [ 62.612647][ T63] ? submit_bio+0x367/0x620 [ 62.617139][ T63] ? submit_bio_noacct+0x800/0x800 [ 62.622242][ T63] bio_alloc_bioset+0x124/0x910 [ 62.627081][ T63] submit_bh_wbc+0x1c2/0x680 [ 62.632017][ T63] submit_bh+0x2a/0x40 [ 62.636334][ T63] jbd2_journal_commit_transaction+0x2461/0x5650 [ 62.643270][ T63] ? jbd2_journal_finish_inode_data_buffers+0xb0/0xb0 [ 62.650665][ T63] ? __switch_to+0x56c/0x1070 [ 62.655343][ T63] ? compat_start_thread+0x20/0x20 [ 62.660443][ T63] ? _raw_spin_unlock+0x4d/0x70 [ 62.665440][ T63] ? _raw_spin_lock+0xf0/0xf0 [ 62.670107][ T63] ? __kasan_check_write+0x14/0x20 [ 62.675455][ T63] ? _raw_spin_lock_irqsave+0xc2/0x130 [ 62.681092][ T63] ? _raw_spin_lock+0xf0/0xf0 [ 62.685853][ T63] ? detach_if_pending+0xf5/0x300 [ 62.690896][ T63] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 62.697234][ T63] ? del_timer_sync+0x144/0x1a0 [ 62.702098][ T63] kjournald2+0x43d/0x860 [ 62.706430][ T63] ? jbd2_seq_info_show+0x5c0/0x5c0 [ 62.711646][ T63] ? io_schedule+0xe0/0xe0 [ 62.716314][ T63] ? __kasan_check_read+0x11/0x20 [ 62.721324][ T63] ? __kthread_parkme+0xab/0x1f0 [ 62.726342][ T63] kthread+0x3f5/0x4f0 [ 62.730779][ T63] ? jbd2_seq_info_show+0x5c0/0x5c0 [ 62.735442][ C1] FAULT_INJECTION: forcing a failure. [ 62.735442][ C1] name failslab, interval 1, probability 10, space 0, times 44 [ 62.736759][ T63] ? kthread_blkcg+0xd0/0xd0 [ 62.754961][ T63] ret_from_fork+0x1f/0x30 [ 62.759674][ T63] [ 62.762962][ C1] CPU: 1 PID: 2 Comm: kthreadd Not tainted syzkaller #0 [ 62.763472][ T20] FAULT_INJECTION: forcing a failure. [ 62.763472][ T20] name failslab, interval 1, probability 10, space 0, times 43 [ 62.769913][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 62.769935][ C1] Call Trace: [ 62.769942][ C1] [ 62.769950][ C1] __dump_stack+0x21/0x30 [ 62.804252][ C1] dump_stack_lvl+0x110/0x170 [ 62.808935][ C1] ? show_regs_print_info+0x20/0x20 [ 62.814146][ C1] ? prandom_u32+0x24d/0x290 [ 62.818728][ C1] dump_stack+0x15/0x20 [ 62.823139][ C1] should_fail+0x3ab/0x500 [ 62.828736][ C1] ? wg_packet_send_keepalive+0x62/0x1c0 [ 62.834381][ C1] __should_failslab+0xa4/0xe0 [ 62.839809][ C1] should_failslab+0x9/0x20 [ 62.844329][ C1] slab_pre_alloc_hook+0x39/0xd0 [ 62.849428][ C1] ? wg_packet_send_keepalive+0x62/0x1c0 [ 62.855221][ C1] ? wg_packet_send_keepalive+0x62/0x1c0 [ 62.861049][ C1] __kmalloc_track_caller+0x6c/0x2c0 [ 62.866453][ C1] ? wg_packet_send_keepalive+0x62/0x1c0 [ 62.873260][ C1] ? wg_packet_send_keepalive+0x62/0x1c0 [ 62.879346][ C1] __alloc_skb+0x210/0x730 [ 62.883770][ C1] wg_packet_send_keepalive+0x62/0x1c0 [ 62.889618][ C1] ? wg_expired_send_persistent_keepalive+0x44/0x80 [ 62.896497][ C1] wg_expired_send_persistent_keepalive+0x53/0x80 [ 62.903371][ C1] ? wg_expired_zero_key_material+0x170/0x170 [ 62.910314][ C1] call_timer_fn+0x38/0x290 [ 62.915107][ C1] ? wg_expired_zero_key_material+0x170/0x170 [ 62.921270][ C1] __run_timers+0x637/0x9a0 [ 62.926426][ C1] ? calc_index+0x200/0x200 [ 62.931274][ C1] ? sched_clock_cpu+0x18/0x3d0 [ 62.936408][ C1] run_timer_softirq+0x6a/0xf0 [ 62.941935][ C1] handle_softirqs+0x250/0x560 [ 62.946889][ C1] __irq_exit_rcu+0x52/0xf0 [ 62.951482][ C1] irq_exit_rcu+0x9/0x10 [ 62.956011][ C1] sysvec_apic_timer_interrupt+0xa9/0xc0 [ 62.962015][ C1] [ 62.964948][ C1] [ 62.967887][ C1] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 62.974025][ C1] RIP: 0010:kasan_check_range+0x63/0x2a0 [ 62.979736][ C1] Code: bd 01 00 00 00 00 fc ff df 49 89 fe 49 c1 ee 03 49 ba 00 00 00 00 00 fc ff df 4f 8d 1c 16 4c 8d 44 3e ff 4d 89 c1 49 c1 e9 03 <4b> 8d 1c 29 49 89 dc 4d 29 dc 49 83 fc 10 7f 29 4d 85 e4 0f 84 45 [ 62.999929][ C1] RSP: 0018:ffffc90000027848 EFLAGS: 00000a06 [ 63.005988][ C1] RAX: ffffffff81524201 RBX: ffffffff8564bda0 RCX: ffffffff8152421c [ 63.014122][ C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff86711f80 [ 63.022081][ C1] RBP: ffffc90000027870 R08: ffffffff86711f83 R09: 1ffffffff0ce23f0 [ 63.030127][ C1] R10: dffffc0000000000 R11: fffffbfff0ce23f0 R12: dffffc0000000000 [ 63.038295][ C1] R13: dffffc0000000001 R14: 1ffffffff0ce23f0 R15: 1ffff92000004f14 [ 63.046451][ C1] ? __printk_wait_on_cpu_lock+0x1/0x40 [ 63.052085][ C1] ? __printk_wait_on_cpu_lock+0x1c/0x40 [ 63.057725][ C1] __kasan_check_read+0x11/0x20 [ 63.062911][ C1] __printk_wait_on_cpu_lock+0x1c/0x40 [ 63.068578][ C1] dump_stack_lvl+0xce/0x170 [ 63.073161][ C1] ? show_regs_print_info+0x20/0x20 [ 63.078429][ C1] dump_stack+0x15/0x20 [ 63.082652][ C1] should_fail+0x3ab/0x500 [ 63.087056][ C1] __should_failslab+0xa4/0xe0 [ 63.092076][ C1] should_failslab+0x9/0x20 [ 63.096615][ C1] slab_pre_alloc_hook+0x39/0xd0 [ 63.101627][ C1] ? dup_task_struct+0x57/0xc50 [ 63.106556][ C1] kmem_cache_alloc+0x44/0x260 [ 63.111308][ C1] dup_task_struct+0x57/0xc50 [ 63.116975][ C1] ? __kasan_check_write+0x14/0x20 [ 63.122389][ C1] copy_process+0x5e0/0x3280 [ 63.128417][ C1] ? __kasan_check_write+0x14/0x20 [ 63.133949][ C1] ? __switch_to+0x56c/0x1070 [ 63.139127][ C1] ? compat_start_thread+0x20/0x20 [ 63.145083][ C1] ? __pidfd_prepare+0x150/0x150 [ 63.150529][ C1] kernel_clone+0x233/0x960 [ 63.155034][ C1] ? create_io_thread+0x170/0x170 [ 63.160051][ C1] ? kthread_blkcg+0xd0/0xd0 [ 63.164998][ C1] kernel_thread+0xfe/0x170 [ 63.169660][ C1] ? ptrace_event_pid+0x180/0x180 [ 63.174698][ C1] ? kthread_blkcg+0xd0/0xd0 [ 63.179290][ C1] ? _raw_spin_trylock_bh+0x150/0x150 [ 63.184745][ C1] ? complete+0x69/0xb0 [ 63.189159][ C1] kthreadd+0x346/0x480 [ 63.193664][ C1] ? tokenize_frame_descr+0x93/0xc0 [ 63.199732][ C1] ? kthread_stop+0x3e0/0x3e0 [ 63.205309][ C1] ? _raw_spin_unlock_irq+0x4e/0x70 [ 63.210668][ C1] ? calculate_sigpending+0x7c/0x90 [ 63.215859][ C1] ? kthread_stop+0x3e0/0x3e0 [ 63.220875][ C1] ret_from_fork+0x1f/0x30 [ 63.225480][ C1] [ 63.228637][ T20] CPU: 0 PID: 20 Comm: kworker/0:1 Not tainted syzkaller #0 [ 63.236173][ T20] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 63.246538][ T20] Workqueue: mld mld_ifc_work [ 63.251299][ T20] Call Trace: [ 63.254579][ T20] [ 63.257516][ T20] __dump_stack+0x21/0x30 [ 63.261926][ T20] dump_stack_lvl+0x110/0x170 [ 63.266601][ T20] ? show_regs_print_info+0x20/0x20 [ 63.271876][ T20] dump_stack+0x15/0x20 [ 63.276554][ T20] should_fail+0x3ab/0x500 [ 63.281055][ T20] __should_failslab+0xa4/0xe0 [ 63.285805][ T20] should_failslab+0x9/0x20 [ 63.290536][ T20] slab_pre_alloc_hook+0x39/0xd0 [ 63.295493][ T20] ? __alloc_skb+0xe4/0x730 [ 63.300471][ T20] kmem_cache_alloc+0x44/0x260 [ 63.305715][ T20] __alloc_skb+0xe4/0x730 [ 63.310150][ T20] mld_newpack+0x143/0x9e0 [ 63.314825][ T20] ? mld_sendpack+0xba0/0xba0 [ 63.319488][ T20] ? add_grec+0x1340/0x1340 [ 63.323977][ T20] ? add_grec+0xf70/0x1340 [ 63.328827][ T20] add_grec+0xee8/0x1340 [ 63.333498][ T20] ? wait_for_completion_killable_timeout+0x10/0x10 [ 63.340518][ T20] mld_ifc_work+0x728/0xc40 [ 63.345108][ T20] process_one_work+0x6c8/0xbb0 [ 63.350334][ T20] worker_thread+0xaa0/0x1250 [ 63.355003][ T20] ? __kasan_check_read+0x11/0x20 [ 63.360015][ T20] kthread+0x3f5/0x4f0 [ 63.364186][ T20] ? worker_clr_flags+0x190/0x190 [ 63.369221][ T20] ? kthread_blkcg+0xd0/0xd0 [ 63.373806][ T20] ret_from_fork+0x1f/0x30 [ 63.378209][ T20] [ 63.381235][ T2] CPU: 1 PID: 2 Comm: kthreadd Not tainted syzkaller #0 [ 63.388174][ T2] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 63.398555][ T2] Call Trace: [ 63.401913][ T2] [ 63.404928][ T2] __dump_stack+0x21/0x30 [ 63.409246][ T2] dump_stack_lvl+0x110/0x170 [ 63.413915][ T2] ? show_regs_print_info+0x20/0x20 [ 63.419101][ T2] dump_stack+0x15/0x20 [ 63.423264][ T2] should_fail+0x3ab/0x500 [ 63.427879][ T2] __should_failslab+0xa4/0xe0 [ 63.432636][ T2] should_failslab+0x9/0x20 [ 63.437700][ T2] slab_pre_alloc_hook+0x39/0xd0 [ 63.442644][ T2] ? dup_task_struct+0x57/0xc50 [ 63.447510][ T2] kmem_cache_alloc+0x44/0x260 [ 63.452363][ T2] dup_task_struct+0x57/0xc50 [ 63.457042][ T2] ? __kasan_check_write+0x14/0x20 [ 63.462144][ T2] copy_process+0x5e0/0x3280 [ 63.466743][ T2] ? __kasan_check_write+0x14/0x20 [ 63.471844][ T2] ? __switch_to+0x56c/0x1070 [ 63.476527][ T2] ? compat_start_thread+0x20/0x20 [ 63.481713][ T2] ? __pidfd_prepare+0x150/0x150 [ 63.486645][ T2] kernel_clone+0x233/0x960 [ 63.491138][ T2] ? create_io_thread+0x170/0x170 [ 63.496151][ T2] ? kthread_blkcg+0xd0/0xd0 [ 63.500880][ T2] kernel_thread+0xfe/0x170 [ 63.505494][ T2] ? ptrace_event_pid+0x180/0x180 [ 63.510510][ T2] ? kthread_blkcg+0xd0/0xd0 [ 63.515175][ T2] ? _raw_spin_trylock_bh+0x150/0x150 [ 63.520535][ T2] ? complete+0x69/0xb0 [ 63.524678][ T2] kthreadd+0x346/0x480 [ 63.528821][ T2] ? tokenize_frame_descr+0x93/0xc0 [ 63.534011][ T2] ? kthread_stop+0x3e0/0x3e0 [ 63.538799][ T2] ? _raw_spin_unlock_irq+0x4e/0x70 [ 63.544765][ T2] ? calculate_sigpending+0x7c/0x90 [ 63.550254][ T2] ? kthread_stop+0x3e0/0x3e0 [ 63.555113][ T2] ret_from_fork+0x1f/0x30 [ 63.559746][ T2] [ 63.563084][ T45] CPU: 0 PID: 45 Comm: kworker/u4:2 Not tainted syzkaller #0 [ 63.571785][ T45] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 63.582093][ T45] Workqueue: netns cleanup_net [ 63.586949][ T45] Call Trace: [ 63.590298][ T45] [ 63.593431][ T45] __dump_stack+0x21/0x30 [ 63.598366][ T45] dump_stack_lvl+0x110/0x170 [ 63.603285][ T45] ? show_regs_print_info+0x20/0x20 [ 63.608465][ T45] ? prandom_u32+0x24d/0x290 [ 63.613365][ T45] dump_stack+0x15/0x20 [ 63.617593][ T45] should_fail+0x3ab/0x500 [ 63.622476][ T45] ? rtmsg_ifinfo_build_skb+0x75/0x180 [ 63.628961][ T45] __should_failslab+0xa4/0xe0 [ 63.636018][ T45] should_failslab+0x9/0x20 [ 63.641618][ T45] slab_pre_alloc_hook+0x39/0xd0 [ 63.646847][ T45] ? rtmsg_ifinfo_build_skb+0x75/0x180 [ 63.652662][ T45] ? rtmsg_ifinfo_build_skb+0x75/0x180 [ 63.658880][ T45] __kmalloc_track_caller+0x6c/0x2c0 [ 63.664859][ T45] ? rtmsg_ifinfo_build_skb+0x75/0x180 [ 63.671558][ T45] ? rtmsg_ifinfo_build_skb+0x75/0x180 [ 63.678086][ T45] __alloc_skb+0x210/0x730 [ 63.683682][ T45] rtmsg_ifinfo_build_skb+0x75/0x180 [ 63.689541][ T45] unregister_netdevice_many+0x10d7/0x1a00 [ 63.696455][ T45] ? alloc_netdev_mqs+0xe20/0xe20 [ 63.704383][ T45] ? unregister_netdevice_queue+0x17c/0x320 [ 63.711033][ T45] ? list_netdevice+0x4c0/0x4c0 [ 63.716612][ T45] ip6gre_exit_batch_net+0x5ca/0x620 [ 63.723889][ T45] ? ip6gre_init_net+0x340/0x340 [ 63.730052][ T45] ? ip6gre_init_net+0x340/0x340 [ 63.736206][ T45] cleanup_net+0x605/0xae0 [ 63.741904][ T45] ? ops_init+0x470/0x470 [ 63.747385][ T45] process_one_work+0x6c8/0xbb0 [ 63.752840][ T45] worker_thread+0xaa0/0x1250 [ 63.757549][ T45] ? __kasan_check_read+0x11/0x20 [ 63.762649][ T45] kthread+0x3f5/0x4f0 [ 63.766792][ T45] ? worker_clr_flags+0x190/0x190 [ 63.771899][ T45] ? kthread_blkcg+0xd0/0xd0 [ 63.776572][ T45] ret_from_fork+0x1f/0x30 [ 63.781183][ T45] [ 63.784289][ T10] FAULT_INJECTION: forcing a failure. [ 63.784289][ T10] name failslab, interval 1, probability 10, space 0, times 39 [ 63.784467][ T89] CPU: 1 PID: 89 Comm: klogd Not tainted syzkaller #0 [ 63.797791][ T64] EXT4-fs (sda1): failed to convert unwritten extents to written extents -- potential data loss! (inode 2021, error -12) [ 63.804805][ T89] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 63.818260][ T298] FAULT_INJECTION: forcing a failure. [ 63.818260][ T298] name failslab, interval 1, probability 10, space 0, times 39 [ 63.827782][ T89] Call Trace: [ 63.827790][ T89] [ 63.827795][ T89] __dump_stack+0x21/0x30 [ 63.851285][ T89] dump_stack_lvl+0x110/0x170 [ 63.855965][ T89] ? show_regs_print_info+0x20/0x20 [ 63.861150][ T89] ? prandom_u32+0x24d/0x290 [ 63.865738][ T89] dump_stack+0x15/0x20 [ 63.870083][ T89] should_fail+0x3ab/0x500 [ 63.874497][ T89] ? alloc_skb_with_frags+0xa8/0x620 [ 63.880754][ T89] __should_failslab+0xa4/0xe0 [ 63.885537][ T89] should_failslab+0x9/0x20 [ 63.890482][ T89] slab_pre_alloc_hook+0x39/0xd0 [ 63.895817][ T89] ? alloc_skb_with_frags+0xa8/0x620 [ 63.901498][ T89] ? alloc_skb_with_frags+0xa8/0x620 [ 63.907046][ T89] __kmalloc_track_caller+0x6c/0x2c0 [ 63.912693][ T89] ? alloc_skb_with_frags+0xa8/0x620 [ 63.918274][ T89] ? alloc_skb_with_frags+0xa8/0x620 [ 63.923837][ T89] __alloc_skb+0x210/0x730 [ 63.929430][ T89] alloc_skb_with_frags+0xa8/0x620 [ 63.934831][ T89] ? memcpy+0x56/0x70 [ 63.938897][ T89] sock_alloc_send_pskb+0x87f/0x9a0 [ 63.944099][ T89] ? sock_kzfree_s+0x60/0x60 [ 63.948973][ T89] ? __kasan_check_write+0x14/0x20 [ 63.954096][ T89] ? _raw_spin_lock+0x94/0xf0 [ 63.957018][ T20] FAULT_INJECTION: forcing a failure. [ 63.957018][ T20] name failslab, interval 1, probability 10, space 0, times 38 [ 63.958857][ T89] ? _raw_spin_trylock_bh+0x150/0x150 [ 63.977305][ T89] unix_dgram_sendmsg+0x6f3/0x19b0 [ 63.982978][ T89] ? unix_dgram_poll+0x6c0/0x6c0 [ 63.989516][ T89] ? security_socket_sendmsg+0x82/0xa0 [ 63.995070][ T89] __sys_sendto+0x46d/0x620 [ 64.000146][ T89] ? __ia32_sys_getpeername+0x90/0x90 [ 64.006087][ T89] ? __kasan_check_write+0x14/0x20 [ 64.011200][ T89] __x64_sys_sendto+0xe5/0x100 [ 64.015953][ T89] x64_sys_call+0x178/0x9a0 [ 64.020491][ T89] do_syscall_64+0x4c/0xa0 [ 64.024993][ T89] ? clear_bhb_loop+0x50/0xa0 [ 64.030128][ T89] ? clear_bhb_loop+0x50/0xa0 [ 64.035024][ T89] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 64.041124][ T89] RIP: 0033:0x7fca11087407 [ 64.045912][ T89] Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 64.066032][ T89] RSP: 002b:00007ffe548605a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 64.076299][ T89] RAX: ffffffffffffffda RBX: 00007fca10f37c80 RCX: 00007fca11087407 [ 64.086597][ T89] RDX: 000000000000005b RSI: 00007ffe548606e0 RDI: 0000000000000003 [ 64.095601][ T89] RBP: 00007ffe54860b10 R08: 0000000000000000 R09: 0000000000000000 [ 64.104209][ T89] R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffe54860b28 [ 64.113655][ T89] R13: 00007ffe548606e0 R14: 0000000000000040 R15: 00007ffe548606e0 [ 64.122160][ T89] [ 64.125874][ T298] CPU: 0 PID: 298 Comm: syz-executor Not tainted syzkaller #0 [ 64.126446][ T89] FAULT_INJECTION: forcing a failure. [ 64.126446][ T89] name failslab, interval 1, probability 10, space 0, times 37 [ 64.133730][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 64.133743][ T298] Call Trace: [ 64.133748][ T298] [ 64.133754][ T298] __dump_stack+0x21/0x30 [ 64.133774][ T298] dump_stack_lvl+0x110/0x170 [ 64.133787][ T298] ? show_regs_print_info+0x20/0x20 [ 64.178629][ T298] dump_stack+0x15/0x20 [ 64.182869][ T298] should_fail+0x3ab/0x500 [ 64.187366][ T298] __should_failslab+0xa4/0xe0 [ 64.192145][ T298] should_failslab+0x9/0x20 [ 64.196646][ T298] slab_pre_alloc_hook+0x39/0xd0 [ 64.201761][ T298] ? __alloc_skb+0xe4/0x730 [ 64.206273][ T298] kmem_cache_alloc+0x44/0x260 [ 64.211124][ T298] __alloc_skb+0xe4/0x730 [ 64.215563][ T298] tcp_send_fin+0x1ad/0xf50 [ 64.220080][ T298] __tcp_close+0x588/0xde0 [ 64.224752][ T298] ? rwsem_write_trylock+0x136/0x300 [ 64.230165][ T298] tcp_close+0x29/0x110 [ 64.234314][ T298] inet_release+0x183/0x200 [ 64.239019][ T298] sock_close+0xb8/0x200 [ 64.243380][ T298] ? sock_mmap+0xa0/0xa0 [ 64.247617][ T298] __fput+0x22b/0x900 [ 64.252027][ T298] ____fput+0x15/0x20 [ 64.256365][ T298] task_work_run+0x127/0x190 [ 64.261053][ T298] do_exit+0xb70/0x29a0 [ 64.265578][ T298] ? put_task_struct+0x90/0x90 [ 64.270571][ T298] ? __fdget_pos+0x1f7/0x380 [ 64.275161][ T298] ? ksys_write+0x1eb/0x260 [ 64.279659][ T298] do_group_exit+0x149/0x310 [ 64.284327][ T298] __x64_sys_exit_group+0x3f/0x40 [ 64.289389][ T298] x64_sys_call+0x832/0x9a0 [ 64.294230][ T298] do_syscall_64+0x4c/0xa0 [ 64.298664][ T298] ? clear_bhb_loop+0x50/0xa0 [ 64.303506][ T298] ? clear_bhb_loop+0x50/0xa0 [ 64.305944][ T63] FAULT_INJECTION: forcing a failure. [ 64.305944][ T63] name failslab, interval 1, probability 10, space 0, times 37 [ 64.308269][ T298] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 64.327449][ T298] RIP: 0033:0x7f969b77fe99 [ 64.331861][ T298] Code: Unable to access opcode bytes at RIP 0x7f969b77fe6f. [ 64.339460][ T298] RSP: 002b:00007fff6848f8f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 64.347973][ T298] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f969b77fe99 [ 64.356648][ T298] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000043 [ 64.364793][ T298] RBP: 00007f969b83111f R08: 0000000000000000 R09: 000055557edcef60 [ 64.373210][ T298] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000c [ 64.381644][ T298] R13: 000055557edcef60 R14: 000055557edcbbf0 R15: 00007fff6848fb70 [ 64.390498][ T298] [ 64.393514][ T63] CPU: 1 PID: 63 Comm: jbd2/sda1-8 Not tainted syzkaller #0 [ 64.401055][ T63] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 64.411474][ T63] Call Trace: [ 64.414834][ T63] [ 64.417862][ T63] __dump_stack+0x21/0x30 [ 64.422303][ T63] dump_stack_lvl+0x110/0x170 [ 64.427072][ T63] ? show_regs_print_info+0x20/0x20 [ 64.432358][ T63] ? prandom_u32+0x24d/0x290 [ 64.436940][ T63] dump_stack+0x15/0x20 [ 64.441089][ T63] should_fail+0x3ab/0x500 [ 64.445516][ T63] __should_failslab+0xa4/0xe0 [ 64.450565][ T63] should_failslab+0x9/0x20 [ 64.455064][ T63] slab_pre_alloc_hook+0x39/0xd0 [ 64.460168][ T63] ? mempool_alloc_slab+0x1d/0x30 [ 64.465931][ T63] kmem_cache_alloc+0x44/0x260 [ 64.471017][ T63] ? enqueue_task_fair+0xaf1/0x2130 [ 64.476215][ T63] ? mempool_free+0x330/0x330 [ 64.480888][ T63] mempool_alloc_slab+0x1d/0x30 [ 64.485755][ T63] mempool_alloc+0x167/0x4c0 [ 64.490332][ T63] ? __kasan_check_write+0x14/0x20 [ 64.495445][ T63] ? resched_curr+0x108/0x320 [ 64.500114][ T63] ? mempool_resize+0x880/0x880 [ 64.504949][ T63] ? psi_task_change+0x213/0x370 [ 64.509895][ T63] sg_pool_alloc+0xb0/0xe0 [ 64.514303][ T63] __sg_alloc_table+0x1c1/0x6d0 [ 64.519144][ T63] sg_alloc_table_chained+0x8b/0x1e0 [ 64.524426][ T63] ? sg_alloc_table_chained+0x1e0/0x1e0 [ 64.530399][ T63] scsi_alloc_sgtables+0x292/0x8a0 [ 64.535448][ C0] FAULT_INJECTION: forcing a failure. [ 64.535448][ C0] name failslab, interval 1, probability 10, space 0, times 37 [ 64.535505][ T63] ? scsi_io_completion_action+0xce0/0xce0 [ 64.554649][ T63] sd_init_command+0x60e/0x2610 [ 64.559507][ T63] ? arch_stack_walk+0x108/0x140 [ 64.565308][ T63] scsi_queue_rq+0x176e/0x31c0 [ 64.570151][ T63] blk_mq_dispatch_rq_list+0xa06/0x1c50 [ 64.575822][ T63] ? blk_mq_get_driver_tag+0x920/0x920 [ 64.581311][ T63] blk_mq_do_dispatch_sched+0xadf/0xc90 [ 64.587040][ T63] ? blk_mq_exit_sched+0x590/0x590 [ 64.592851][ T63] ? submit_bio_checks+0xb50/0x11e0 [ 64.598248][ T63] ? blk_mq_try_issue_list_directly+0x490/0x490 [ 64.604596][ T63] __blk_mq_sched_dispatch_requests+0x32c/0x410 [ 64.610932][ T63] ? blk_mq_sched_dispatch_requests+0x1c0/0x1c0 [ 64.617644][ T63] blk_mq_sched_dispatch_requests+0x102/0x1c0 [ 64.623994][ T63] __blk_mq_run_hw_queue+0xf3/0x170 [ 64.629399][ T63] __blk_mq_delay_run_hw_queue+0x17e/0x420 [ 64.635226][ T63] ? blk_mq_delay_run_hw_queue+0x30/0x30 [ 64.642335][ T63] ? sbitmap_any_bit_set+0x119/0x160 [ 64.648271][ T63] blk_mq_run_hw_queue+0x282/0x3a0 [ 64.654077][ T63] blk_mq_sched_insert_requests+0x1cd/0x340 [ 64.660240][ T63] blk_mq_flush_plug_list+0x4e2/0x6b0 [ 64.665888][ T63] ? blk_mq_insert_requests+0x340/0x340 [ 64.672385][ T63] ? blkcg_set_ioprio+0x1f6/0x320 [ 64.680846][ T63] ? submit_bio+0x367/0x620 [ 64.686344][ T63] blk_flush_plug_list+0x404/0x450 [ 64.691853][ T63] ? bio_add_page+0x2de/0x460 [ 64.697603][ T63] ? __kasan_check_write+0x14/0x20 [ 64.703228][ T63] ? blk_check_plugged+0x270/0x270 [ 64.708383][ T63] ? _raw_write_lock+0x94/0xf0 [ 64.713311][ T63] ? _raw_write_trylock+0x150/0x150 [ 64.718650][ T63] ? _raw_read_unlock+0x25/0x40 [ 64.724219][ T63] blk_finish_plug+0x5d/0x80 [ 64.729164][ T63] jbd2_journal_commit_transaction+0x2dcd/0x5650 [ 64.735716][ T63] ? jbd2_journal_finish_inode_data_buffers+0xb0/0xb0 [ 64.743020][ T63] ? __switch_to+0x56c/0x1070 [ 64.747851][ T63] ? compat_start_thread+0x20/0x20 [ 64.753140][ T63] ? _raw_spin_unlock+0x4d/0x70 [ 64.757979][ T63] ? _raw_spin_lock+0xf0/0xf0 [ 64.762916][ T63] ? __kasan_check_write+0x14/0x20 [ 64.768202][ T63] ? _raw_spin_lock_irqsave+0xc2/0x130 [ 64.773665][ T63] ? _raw_spin_lock+0xf0/0xf0 [ 64.778527][ T63] ? detach_if_pending+0xf5/0x300 [ 64.784872][ T63] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 64.791136][ T63] ? del_timer_sync+0x144/0x1a0 [ 64.795990][ T63] kjournald2+0x43d/0x860 [ 64.801489][ T63] ? jbd2_seq_info_show+0x5c0/0x5c0 [ 64.807317][ T63] ? io_schedule+0xe0/0xe0 [ 64.812037][ T63] ? __kasan_check_read+0x11/0x20 [ 64.818011][ T63] ? __kthread_parkme+0xab/0x1f0 [ 64.823303][ T63] kthread+0x3f5/0x4f0 [ 64.827852][ T63] ? jbd2_seq_info_show+0x5c0/0x5c0 [ 64.833420][ T63] ? kthread_blkcg+0xd0/0xd0 [ 64.838020][ T63] ret_from_fork+0x1f/0x30 [ 64.842435][ T63] [ 64.845791][ C0] CPU: 0 PID: 8 Comm: kworker/u4:0 Not tainted syzkaller #0 [ 64.845833][ C1] FAULT_INJECTION: forcing a failure. [ 64.845833][ C1] name failslab, interval 1, probability 10, space 0, times 37 [ 64.853245][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 64.877093][ C0] Workqueue: events_unbound toggle_allocation_gate [ 64.884206][ C0] Call Trace: [ 64.888096][ C0] [ 64.891309][ C0] __dump_stack+0x21/0x30 [ 64.895895][ C0] dump_stack_lvl+0x110/0x170 [ 64.900647][ C0] ? show_regs_print_info+0x20/0x20 [ 64.906799][ C0] ? prandom_u32+0x24d/0x290 [ 64.911999][ C0] dump_stack+0x15/0x20 [ 64.916429][ C0] should_fail+0x3ab/0x500 [ 64.921657][ C0] ? wg_packet_send_keepalive+0x62/0x1c0 [ 64.928410][ C0] __should_failslab+0xa4/0xe0 [ 64.933703][ C0] should_failslab+0x9/0x20 [ 64.938609][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 64.943897][ C0] ? wg_packet_send_keepalive+0x62/0x1c0 [ 64.949893][ C0] ? wg_packet_send_keepalive+0x62/0x1c0 [ 64.955619][ C0] __kmalloc_track_caller+0x6c/0x2c0 [ 64.961528][ C0] ? wg_packet_send_keepalive+0x62/0x1c0 [ 64.967617][ C0] ? wg_packet_send_keepalive+0x62/0x1c0 [ 64.973427][ C0] __alloc_skb+0x210/0x730 [ 64.977930][ C0] wg_packet_send_keepalive+0x62/0x1c0 [ 64.984282][ C0] ? wg_expired_send_persistent_keepalive+0x44/0x80 [ 64.990868][ C0] wg_expired_send_persistent_keepalive+0x53/0x80 [ 64.997544][ C0] ? wg_expired_zero_key_material+0x170/0x170 [ 65.004227][ C0] call_timer_fn+0x38/0x290 [ 65.009268][ C0] ? wg_expired_zero_key_material+0x170/0x170 [ 65.015605][ C0] __run_timers+0x637/0x9a0 [ 65.020282][ C0] ? calc_index+0x200/0x200 [ 65.024790][ C0] ? sched_clock_cpu+0x18/0x3d0 [ 65.029636][ C0] run_timer_softirq+0x6a/0xf0 [ 65.034397][ C0] handle_softirqs+0x250/0x560 [ 65.039156][ C0] ? irqtime_account_irq+0xbe/0x390 [ 65.044616][ C0] __irq_exit_rcu+0x52/0xf0 [ 65.049197][ C0] irq_exit_rcu+0x9/0x10 [ 65.053657][ C0] sysvec_apic_timer_interrupt+0xa9/0xc0 [ 65.059380][ C0] [ 65.062307][ C0] [ 65.065232][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 65.071391][ C0] RIP: 0010:smp_call_function_many_cond+0x8ad/0x9e0 [ 65.077992][ C0] Code: 0f b6 44 05 00 84 c0 0f 85 9b 00 00 00 41 8b 1f 89 de 83 e6 01 31 ff e8 31 48 0a 00 83 e3 01 75 07 e8 77 44 0a 00 eb 42 f3 90 <48> b8 00 00 00 00 00 fc ff df 41 0f b6 44 05 00 84 c0 75 10 41 f7 [ 65.097791][ C0] RSP: 0018:ffffc90000087860 EFLAGS: 00000293 [ 65.104882][ C0] RAX: ffffffff815f728f RBX: 0000000000000001 RCX: ffff888100273b40 [ 65.113307][ C0] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 65.121469][ C0] RBP: ffffc90000087978 R08: ffff8881f7038e97 R09: 1ffff1103ee071d2 [ 65.130176][ C0] R10: dffffc0000000000 R11: ffffed103ee071d3 R12: ffff8881f7038e80 [ 65.139069][ C0] R13: 1ffff1103ee2784d R14: 0000000000000001 R15: ffff8881f713c268 [ 65.147496][ C0] ? smp_call_function_many_cond+0x8cf/0x9e0 [ 65.153743][ C0] ? text_poke_sync+0x30/0x30 [ 65.158500][ C0] ? smp_call_function_many+0x40/0x40 [ 65.164212][ C0] ? __kmalloc_track_caller+0x75/0x2c0 [ 65.169866][ C0] ? text_poke+0x20/0x20 [ 65.174282][ C0] ? preempt_schedule_thunk+0x16/0x18 [ 65.179646][ C0] ? text_poke_sync+0x30/0x30 [ 65.184318][ C0] on_each_cpu_cond_mask+0x43/0x80 [ 65.189422][ C0] text_poke_bp_batch+0x420/0x600 [ 65.194523][ C0] ? text_poke_loc_init+0x560/0x560 [ 65.199795][ C0] ? __kasan_check_write+0x14/0x20 [ 65.204897][ C0] ? mutex_lock+0x9b/0x1c0 [ 65.209304][ C0] ? wait_for_completion_killable_timeout+0x10/0x10 [ 65.215970][ C0] ? text_poke_queue+0xde/0x1a0 [ 65.220822][ C0] text_poke_finish+0x1a/0x30 [ 65.226401][ C0] arch_jump_label_transform_apply+0x15/0x30 [ 65.232437][ C0] __jump_label_update+0x38f/0x3b0 [ 65.237550][ C0] jump_label_update+0x39b/0x450 [ 65.242663][ C0] static_key_disable_cpuslocked+0xc5/0x1a0 [ 65.249158][ C0] static_key_disable+0x1a/0x30 [ 65.254113][ C0] toggle_allocation_gate+0x3af/0x440 [ 65.259487][ C0] ? kfence_debugfs_init+0x70/0x70 [ 65.264599][ C0] ? _raw_spin_unlock+0x4d/0x70 [ 65.269795][ C0] ? finish_task_switch+0x16b/0x790 [ 65.275341][ C0] ? __schedule+0xbd7/0x14a0 [ 65.279932][ C0] process_one_work+0x6c8/0xbb0 [ 65.285543][ C0] worker_thread+0xaa0/0x1250 [ 65.290849][ C0] kthread+0x3f5/0x4f0 [ 65.296228][ C0] ? worker_clr_flags+0x190/0x190 [ 65.301299][ C0] ? kthread_blkcg+0xd0/0xd0 [ 65.305895][ C0] ret_from_fork+0x1f/0x30 [ 65.310540][ C0] [ 65.313560][ C1] CPU: 1 PID: 63 Comm: jbd2/sda1-8 Not tainted syzkaller #0 [ 65.320874][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 65.333010][ C1] Call Trace: [ 65.336307][ C1] [ 65.339146][ C1] __dump_stack+0x21/0x30 [ 65.344019][ C1] dump_stack_lvl+0x110/0x170 [ 65.348680][ C1] ? show_regs_print_info+0x20/0x20 [ 65.354692][ C1] dump_stack+0x15/0x20 [ 65.359550][ C1] should_fail+0x3ab/0x500 [ 65.365973][ C1] ? ndisc_send_rs+0x310/0x960 [ 65.371218][ C1] __should_failslab+0xa4/0xe0 [ 65.377491][ C1] should_failslab+0x9/0x20 [ 65.382965][ C1] slab_pre_alloc_hook+0x39/0xd0 [ 65.387949][ C1] ? ndisc_send_rs+0x310/0x960 [ 65.393071][ C1] ? ndisc_send_rs+0x310/0x960 [ 65.398048][ C1] __kmalloc_track_caller+0x6c/0x2c0 [ 65.404081][ C1] ? ndisc_send_rs+0x310/0x960 [ 65.409132][ C1] ? ndisc_send_rs+0x310/0x960 [ 65.414348][ C1] __alloc_skb+0x210/0x730 [ 65.418894][ C1] ndisc_send_rs+0x310/0x960 [ 65.423866][ C1] ? ndisc_send_rs+0x131/0x960 [ 65.428757][ C1] addrconf_rs_timer+0x35a/0x600 [ 65.434083][ C1] ? addrconf_disable_policy_idev+0x360/0x360 [ 65.440250][ C1] ? addrconf_disable_policy_idev+0x360/0x360 [ 65.446500][ C1] call_timer_fn+0x38/0x290 [ 65.451369][ C1] ? addrconf_disable_policy_idev+0x360/0x360 [ 65.458308][ C1] __run_timers+0x637/0x9a0 [ 65.463245][ C1] ? calc_index+0x200/0x200 [ 65.467736][ C1] ? sched_clock_cpu+0x18/0x3d0 [ 65.472575][ C1] run_timer_softirq+0x6a/0xf0 [ 65.477415][ C1] handle_softirqs+0x250/0x560 [ 65.482322][ C1] ? irqtime_account_irq+0xbe/0x390 [ 65.487875][ C1] __irq_exit_rcu+0x52/0xf0 [ 65.492536][ C1] irq_exit_rcu+0x9/0x10 [ 65.496761][ C1] sysvec_apic_timer_interrupt+0xa9/0xc0 [ 65.502642][ C1] [ 65.505569][ C1] [ 65.508673][ C1] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 65.514741][ C1] RIP: 0010:dump_stack_lvl+0x144/0x170 [ 65.520630][ C1] Code: e6 00 02 00 00 31 ff e8 3a 97 be fc 49 81 e5 00 02 00 00 75 07 e8 ec 92 be fc eb 06 e8 e5 92 be fc fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 44 24 40 [ 65.540860][ C1] RSP: 0018:ffffc900009169e0 EFLAGS: 00000293 [ 65.547089][ C1] RAX: ffffffff84ab23fb RBX: ffffffff8564bda0 RCX: ffff88810c05a780 [ 65.555061][ C1] RDX: 0000000000000000 RSI: 0000000000000200 RDI: 0000000000000000 [ 65.563640][ C1] RBP: ffffc90000916a68 R08: 0000000000000003 R09: 0000000000000004 [ 65.571951][ C1] R10: dffffc0000000000 R11: fffffbfff0ce23f0 R12: dffffc0000000000 [ 65.580080][ C1] R13: 0000000000000200 R14: dffffc0000000004 R15: 1ffff92000122d3c [ 65.588300][ C1] ? dump_stack_lvl+0x13b/0x170 [ 65.593235][ C1] ? show_regs_print_info+0x20/0x20 [ 65.598506][ C1] ? prandom_u32+0x24d/0x290 [ 65.603253][ C1] dump_stack+0x15/0x20 [ 65.607416][ C1] should_fail+0x3ab/0x500 [ 65.611838][ C1] __should_failslab+0xa4/0xe0 [ 65.616587][ C1] should_failslab+0x9/0x20 [ 65.621073][ C1] slab_pre_alloc_hook+0x39/0xd0 [ 65.626002][ C1] ? mempool_alloc_slab+0x1d/0x30 [ 65.631104][ C1] kmem_cache_alloc+0x44/0x260 [ 65.635885][ C1] ? enqueue_task_fair+0xaf1/0x2130 [ 65.641164][ C1] ? mempool_free+0x330/0x330 [ 65.646023][ C1] mempool_alloc_slab+0x1d/0x30 [ 65.650961][ C1] mempool_alloc+0x167/0x4c0 [ 65.655618][ C1] ? __kasan_check_write+0x14/0x20 [ 65.660803][ C1] ? resched_curr+0x108/0x320 [ 65.665932][ C1] ? mempool_resize+0x880/0x880 [ 65.670858][ C1] ? psi_task_change+0x213/0x370 [ 65.675991][ C1] sg_pool_alloc+0xb0/0xe0 [ 65.680569][ C1] __sg_alloc_table+0x1c1/0x6d0 [ 65.685662][ C1] sg_alloc_table_chained+0x8b/0x1e0 [ 65.690934][ C1] ? sg_alloc_table_chained+0x1e0/0x1e0 [ 65.696574][ C1] scsi_alloc_sgtables+0x292/0x8a0 [ 65.701755][ C1] ? scsi_io_completion_action+0xce0/0xce0 [ 65.707546][ C1] sd_init_command+0x60e/0x2610 [ 65.712466][ C1] ? arch_stack_walk+0x108/0x140 [ 65.717389][ C1] scsi_queue_rq+0x176e/0x31c0 [ 65.722157][ C1] blk_mq_dispatch_rq_list+0xa06/0x1c50 [ 65.728052][ C1] ? blk_mq_get_driver_tag+0x920/0x920 [ 65.733763][ C1] blk_mq_do_dispatch_sched+0xadf/0xc90 [ 65.740093][ C1] ? blk_mq_exit_sched+0x590/0x590 [ 65.745404][ C1] ? submit_bio_checks+0xb50/0x11e0 [ 65.750789][ C1] ? blk_mq_try_issue_list_directly+0x490/0x490 [ 65.758918][ C1] __blk_mq_sched_dispatch_requests+0x32c/0x410 [ 65.765868][ C1] ? blk_mq_sched_dispatch_requests+0x1c0/0x1c0 [ 65.772379][ C1] blk_mq_sched_dispatch_requests+0x102/0x1c0 [ 65.778633][ C1] __blk_mq_run_hw_queue+0xf3/0x170 [ 65.784031][ C1] __blk_mq_delay_run_hw_queue+0x17e/0x420 [ 65.789854][ C1] ? blk_mq_delay_run_hw_queue+0x30/0x30 [ 65.795563][ C1] ? sbitmap_any_bit_set+0x119/0x160 [ 65.801013][ C1] blk_mq_run_hw_queue+0x282/0x3a0 [ 65.806200][ C1] blk_mq_sched_insert_requests+0x1cd/0x340 [ 65.812082][ C1] blk_mq_flush_plug_list+0x4e2/0x6b0 [ 65.817729][ C1] ? blk_mq_insert_requests+0x340/0x340 [ 65.823359][ C1] ? blkcg_set_ioprio+0x1f6/0x320 [ 65.828366][ C1] ? submit_bio+0x367/0x620 [ 65.832852][ C1] blk_flush_plug_list+0x404/0x450 [ 65.838061][ C1] ? bio_add_page+0x2de/0x460 [ 65.842875][ C1] ? __kasan_check_write+0x14/0x20 [ 65.848056][ C1] ? blk_check_plugged+0x270/0x270 [ 65.853168][ C1] ? _raw_write_lock+0x94/0xf0 [ 65.857914][ C1] ? _raw_write_trylock+0x150/0x150 [ 65.863405][ C1] ? _raw_read_unlock+0x25/0x40 [ 65.868394][ C1] blk_finish_plug+0x5d/0x80 [ 65.872978][ C1] jbd2_journal_commit_transaction+0x2dcd/0x5650 [ 65.879296][ C1] ? jbd2_journal_finish_inode_data_buffers+0xb0/0xb0 [ 65.886149][ C1] ? __switch_to+0x56c/0x1070 [ 65.890812][ C1] ? compat_start_thread+0x20/0x20 [ 65.896252][ C1] ? _raw_spin_unlock+0x4d/0x70 [ 65.901352][ C1] ? _raw_spin_lock+0xf0/0xf0 [ 65.906116][ C1] ? __kasan_check_write+0x14/0x20 [ 65.911215][ C1] ? _raw_spin_lock_irqsave+0xc2/0x130 [ 65.916922][ C1] ? _raw_spin_lock+0xf0/0xf0 [ 65.921614][ C1] ? detach_if_pending+0xf5/0x300 [ 65.927003][ C1] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 65.932994][ C1] ? del_timer_sync+0x144/0x1a0 [ 65.937920][ C1] kjournald2+0x43d/0x860 [ 65.942330][ C1] ? jbd2_seq_info_show+0x5c0/0x5c0 [ 65.947925][ C1] ? io_schedule+0xe0/0xe0 [ 65.952346][ C1] ? __kasan_check_read+0x11/0x20 [ 65.957457][ C1] ? __kthread_parkme+0xab/0x1f0 [ 65.962994][ C1] kthread+0x3f5/0x4f0 [ 65.967429][ C1] ? jbd2_seq_info_show+0x5c0/0x5c0 [ 65.972788][ C1] ? kthread_blkcg+0xd0/0xd0 [ 65.977513][ C1] ret_from_fork+0x1f/0x30 [ 65.981922][ C1] [ 65.984993][ T10] CPU: 0 PID: 10 Comm: kworker/u4:1 Not tainted syzkaller #0 [ 65.992589][ T10] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 66.003170][ T10] Workqueue: 0x0 (events_unbound) [ 66.008900][ T10] Call Trace: [ 66.012171][ T10] [ 66.015091][ T10] __dump_stack+0x21/0x30 [ 66.019761][ T10] dump_stack_lvl+0x110/0x170 [ 66.024431][ T10] ? show_regs_print_info+0x20/0x20 [ 66.030064][ T10] ? prandom_u32+0x24d/0x290 [ 66.034644][ T10] dump_stack+0x15/0x20 [ 66.038875][ T10] should_fail+0x3ab/0x500 [ 66.043283][ T10] __should_failslab+0xa4/0xe0 [ 66.048041][ T10] should_failslab+0x9/0x20 [ 66.052541][ T10] slab_pre_alloc_hook+0x39/0xd0 [ 66.057586][ T10] kmem_cache_alloc_trace+0x48/0x270 [ 66.062860][ T10] ? create_worker+0xee/0x780 [ 66.067699][ T10] create_worker+0xee/0x780 [ 66.072754][ T10] ? workqueue_prepare_cpu+0x170/0x170 [ 66.078315][ T10] worker_thread+0x4c0/0x1250 [ 66.083092][ T10] kthread+0x3f5/0x4f0 [ 66.087176][ T10] ? worker_clr_flags+0x190/0x190 [ 66.092949][ T10] ? kthread_blkcg+0xd0/0xd0 [ 66.097707][ T10] ret_from_fork+0x1f/0x30 [ 66.102284][ T10] [ 66.105766][ T20] CPU: 0 PID: 20 Comm: kworker/0:1 Not tainted syzkaller #0 [ 66.107500][ T45] FAULT_INJECTION: forcing a failure. [ 66.107500][ T45] name failslab, interval 1, probability 10, space 0, times 33 [ 66.113051][ T20] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 66.137929][ T20] Workqueue: mld mld_ifc_work [ 66.142969][ T20] Call Trace: [ 66.147587][ T20] [ 66.151220][ T20] __dump_stack+0x21/0x30 [ 66.156622][ T20] dump_stack_lvl+0x110/0x170 [ 66.162943][ T20] ? show_regs_print_info+0x20/0x20 [ 66.169111][ T20] ? prandom_u32+0x24d/0x290 [ 66.174001][ T20] dump_stack+0x15/0x20 [ 66.178607][ T20] should_fail+0x3ab/0x500 [ 66.183283][ T20] __should_failslab+0xa4/0xe0 [ 66.188052][ T20] should_failslab+0x9/0x20 [ 66.192874][ T20] slab_pre_alloc_hook+0x39/0xd0 [ 66.199082][ T20] kmem_cache_alloc_trace+0x48/0x270 [ 66.204996][ T20] ? dst_cow_metrics_generic+0x55/0x1c0 [ 66.211106][ T20] dst_cow_metrics_generic+0x55/0x1c0 [ 66.217225][ T20] icmp6_dst_alloc+0x35f/0x520 [ 66.223567][ T20] mld_sendpack+0x4d9/0xba0 [ 66.228874][ T20] ? add_grec+0x1340/0x1340 [ 66.234405][ T20] ? add_grec+0xf70/0x1340 [ 66.239814][ T20] ? memcpy+0x56/0x70 [ 66.245070][ T20] ? wait_for_completion_killable_timeout+0x10/0x10 [ 66.252670][ T20] ? __kasan_check_write+0x14/0x20 [ 66.258945][ T20] mld_ifc_work+0x7d7/0xc40 [ 66.267120][ T20] process_one_work+0x6c8/0xbb0 [ 66.273117][ T20] worker_thread+0xaa0/0x1250 [ 66.278534][ T20] ? __kasan_check_read+0x11/0x20 [ 66.285096][ T20] kthread+0x3f5/0x4f0 [ 66.289865][ T20] ? worker_clr_flags+0x190/0x190 [ 66.295426][ T20] ? kthread_blkcg+0xd0/0xd0 [ 66.300795][ T20] ret_from_fork+0x1f/0x30 [ 66.306141][ T20] [ 66.309337][ T45] CPU: 1 PID: 45 Comm: kworker/u4:2 Not tainted syzkaller #0 [ 66.309381][ C0] FAULT_INJECTION: forcing a failure. [ 66.309381][ C0] name failslab, interval 1, probability 10, space 0, times 33 [ 66.316828][ T45] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 66.316846][ T45] Workqueue: netns cleanup_net [ 66.316869][ T45] Call Trace: [ 66.316876][ T45] [ 66.354168][ T45] __dump_stack+0x21/0x30 [ 66.358707][ T45] dump_stack_lvl+0x110/0x170 [ 66.363485][ T45] ? show_regs_print_info+0x20/0x20 [ 66.368992][ T45] ? prandom_u32+0x24d/0x290 [ 66.374136][ T45] dump_stack+0x15/0x20 [ 66.378284][ T45] should_fail+0x3ab/0x500 [ 66.382693][ T45] ? inet6_netconf_notify_devconf+0xd6/0x190 [ 66.389105][ T45] __should_failslab+0xa4/0xe0 [ 66.393952][ T45] should_failslab+0x9/0x20 [ 66.398532][ T45] slab_pre_alloc_hook+0x39/0xd0 [ 66.403816][ T45] ? inet6_netconf_notify_devconf+0xd6/0x190 [ 66.409803][ T45] ? inet6_netconf_notify_devconf+0xd6/0x190 [ 66.415789][ T45] __kmalloc_track_caller+0x6c/0x2c0 [ 66.421081][ T45] ? inet6_netconf_notify_devconf+0xd6/0x190 [ 66.427571][ T45] ? inet6_netconf_notify_devconf+0xd6/0x190 [ 66.433888][ T45] __alloc_skb+0x210/0x730 [ 66.438457][ T45] inet6_netconf_notify_devconf+0xd6/0x190 [ 66.444344][ T45] addrconf_ifdown+0x15fd/0x1910 [ 66.449272][ T45] ? addrconf_cleanup+0x1c0/0x1c0 [ 66.454429][ T45] ? __kasan_check_write+0x14/0x20 [ 66.459620][ T45] ? mutex_unlock+0x8f/0x230 [ 66.464217][ T45] ? __mutex_lock_slowpath+0x10/0x10 [ 66.469616][ T45] ? _raw_spin_lock+0x94/0xf0 [ 66.474284][ T45] ? _raw_spin_trylock_bh+0x150/0x150 [ 66.479647][ T45] addrconf_notify+0x3bd/0xe00 [ 66.484507][ T45] raw_notifier_call_chain+0x90/0x100 [ 66.489886][ T45] unregister_netdevice_many+0x103d/0x1a00 [ 66.495960][ T45] ? alloc_netdev_mqs+0xe20/0xe20 [ 66.500988][ T45] ? unregister_netdevice_queue+0x17c/0x320 [ 66.506979][ T45] ? list_netdevice+0x4c0/0x4c0 [ 66.511938][ T45] ip6gre_exit_batch_net+0x5ca/0x620 [ 66.517323][ T45] ? ip6gre_init_net+0x340/0x340 [ 66.522336][ T45] ? ip6gre_init_net+0x340/0x340 [ 66.527350][ T45] cleanup_net+0x605/0xae0 [ 66.531867][ T45] ? ops_init+0x470/0x470 [ 66.536196][ T45] process_one_work+0x6c8/0xbb0 [ 66.541134][ T45] worker_thread+0xaa0/0x1250 [ 66.545812][ T45] ? __kasan_check_read+0x11/0x20 [ 66.551027][ T45] kthread+0x3f5/0x4f0 [ 66.555171][ T45] ? worker_clr_flags+0x190/0x190 [ 66.560191][ T45] ? kthread_blkcg+0xd0/0xd0 [ 66.565065][ T45] ret_from_fork+0x1f/0x30 [ 66.569494][ T45] [ 66.572505][ C0] CPU: 0 PID: 20 Comm: kworker/0:1 Not tainted syzkaller #0 [ 66.579873][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 66.590269][ C0] Workqueue: mld mld_ifc_work [ 66.594946][ C0] Call Trace: [ 66.598217][ C0] [ 66.601058][ C0] __dump_stack+0x21/0x30 [ 66.605485][ C0] dump_stack_lvl+0x110/0x170 [ 66.610255][ C0] ? show_regs_print_info+0x20/0x20 [ 66.615422][ T10] workqueue: Failed to allocate a worker [ 66.615442][ C0] ? prandom_u32+0x24d/0x290 [ 66.625714][ C0] dump_stack+0x15/0x20 [ 66.629877][ C0] should_fail+0x3ab/0x500 [ 66.634289][ C0] ? __napi_alloc_skb+0x162/0x2e0 [ 66.639308][ C0] __should_failslab+0xa4/0xe0 [ 66.644066][ C0] should_failslab+0x9/0x20 [ 66.649183][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 66.655419][ C0] ? __napi_alloc_skb+0x162/0x2e0 [ 66.661074][ C0] ? __napi_alloc_skb+0x162/0x2e0 [ 66.666368][ C0] __kmalloc_track_caller+0x6c/0x2c0 [ 66.672396][ C0] ? __napi_alloc_skb+0x162/0x2e0 [ 66.677779][ C0] ? __napi_alloc_skb+0x162/0x2e0 [ 66.682798][ C0] __alloc_skb+0x210/0x730 [ 66.687207][ C0] __napi_alloc_skb+0x162/0x2e0 [ 66.692196][ C0] page_to_skb+0x274/0xb60 [ 66.696714][ C0] receive_buf+0xcd3/0x4bc0 [ 66.701279][ C0] ? virtnet_poll_tx+0x4e0/0x4e0 [ 66.706394][ C0] ? calc_wheel_index+0xc8/0x8e0 [ 66.711508][ C0] ? timer_update_keys+0xb0/0xb0 [ 66.716612][ C0] ? debug_smp_processor_id+0x17/0x20 [ 66.722084][ C0] ? virtqueue_get_buf_ctx+0x4a2/0xf60 [ 66.727548][ C0] ? detach_buf_split+0x88d/0xa90 [ 66.733746][ C0] ? virtqueue_get_buf_ctx+0x700/0xf60 [ 66.739808][ C0] virtnet_poll+0x510/0xe90 [ 66.744314][ C0] ? refill_work+0x220/0x220 [ 66.748923][ C0] ? __run_timers+0x90d/0x9a0 [ 66.753871][ C0] __napi_poll+0xbb/0x580 [ 66.758563][ C0] net_rx_action+0x37f/0x910 [ 66.763325][ C0] ? net_tx_action+0x520/0x520 [ 66.768523][ C0] handle_softirqs+0x250/0x560 [ 66.773376][ C0] ? irqtime_account_irq+0xbe/0x390 [ 66.778836][ C0] __irq_exit_rcu+0x52/0xf0 [ 66.783696][ C0] irq_exit_rcu+0x9/0x10 [ 66.788126][ C0] sysvec_apic_timer_interrupt+0xa9/0xc0 [ 66.793778][ C0] [ 66.796706][ C0] [ 66.799626][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 66.805730][ C0] RIP: 0010:preempt_schedule_irq+0xa5/0x120 [ 66.811739][ C0] Code: 44 24 20 00 02 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 4d bf 01 00 00 00 e8 11 4d 95 fc fb bf 01 00 00 00 76 e4 ff ff fa bf 01 00 00 00 e8 ab 4e 95 fc 65 48 8b 1d 13 f7 [ 66.831433][ C0] RSP: 0018:ffffc900001476a0 EFLAGS: 00000246 [ 66.837507][ C0] RAX: 1ffff11020061646 RBX: ffffc90000147778 RCX: ffffffff870cbf00 [ 66.845475][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 [ 66.846617][ T45] FAULT_INJECTION: forcing a failure. [ 66.846617][ T45] name failslab, interval 1, probability 10, space 0, times 30 [ 66.853788][ C0] RBP: ffffc90000147728 R08: ffff88810030a787 R09: 1ffff110200614f0 [ 66.874577][ C0] R10: dffffc0000000000 R11: ffffed10200614f1 R12: 0000000000000000 [ 66.882544][ C0] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000028ed4 [ 66.890812][ C0] ? __cond_resched+0xd0/0xd0 [ 66.895500][ C0] irqentry_exit_cond_resched+0x29/0x30 [ 66.901048][ C0] irqentry_exit+0x37/0x40 [ 66.905548][ C0] sysvec_reschedule_ipi+0x78/0x80 [ 66.911025][ C0] asm_sysvec_reschedule_ipi+0x1b/0x20 [ 66.916494][ C0] RIP: 0010:dump_stack_lvl+0x144/0x170 [ 66.922082][ C0] Code: e6 00 02 00 00 31 ff e8 3a 97 be fc 49 81 e5 00 02 00 00 75 07 e8 ec 92 be fc eb 06 e8 e5 92 be fc fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 44 24 40 [ 66.941957][ C0] RSP: 0018:ffffc90000147820 EFLAGS: 00000293 [ 66.948023][ C0] RAX: ffffffff84ab23fb RBX: ffffffff8564bda0 RCX: ffff88810030a780 [ 66.956298][ C0] RDX: 0000000000000000 RSI: 0000000000000200 RDI: 0000000000000000 [ 66.964981][ C0] RBP: ffffc900001478a8 R08: 0000000000000003 R09: 0000000000000004 [ 66.973612][ C0] R10: dffffc0000000000 R11: fffffbfff0ce23f0 R12: dffffc0000000000 [ 66.982167][ C0] R13: 0000000000000200 R14: dffffc0000000004 R15: 1ffff92000028f04 [ 66.991141][ C0] ? dump_stack_lvl+0x13b/0x170 [ 66.996104][ C0] ? show_regs_print_info+0x20/0x20 [ 67.001733][ C0] ? prandom_u32+0x24d/0x290 [ 67.006318][ C0] dump_stack+0x15/0x20 [ 67.010461][ C0] should_fail+0x3ab/0x500 [ 67.015163][ C0] __should_failslab+0xa4/0xe0 [ 67.019943][ C0] should_failslab+0x9/0x20 [ 67.024561][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 67.029602][ C0] kmem_cache_alloc_trace+0x48/0x270 [ 67.034894][ C0] ? dst_cow_metrics_generic+0x55/0x1c0 [ 67.040520][ C0] dst_cow_metrics_generic+0x55/0x1c0 [ 67.045891][ C0] icmp6_dst_alloc+0x35f/0x520 [ 67.050825][ C0] mld_sendpack+0x4d9/0xba0 [ 67.055318][ C0] ? add_grec+0x1340/0x1340 [ 67.059813][ C0] ? add_grec+0xf70/0x1340 [ 67.064235][ C0] ? memcpy+0x56/0x70 [ 67.068469][ C0] ? wait_for_completion_killable_timeout+0x10/0x10 [ 67.075399][ C0] ? __kasan_check_write+0x14/0x20 [ 67.081027][ C0] mld_ifc_work+0x7d7/0xc40 [ 67.085702][ C0] process_one_work+0x6c8/0xbb0 [ 67.091103][ C0] worker_thread+0xaa0/0x1250 [ 67.096049][ C0] ? __kasan_check_read+0x11/0x20 [ 67.101161][ C0] kthread+0x3f5/0x4f0 [ 67.105405][ C0] ? worker_clr_flags+0x190/0x190 [ 67.110789][ C0] ? kthread_blkcg+0xd0/0xd0 [ 67.116052][ C0] ret_from_fork+0x1f/0x30 [ 67.121533][ C0] [ 67.124563][ T45] CPU: 1 PID: 45 Comm: kworker/u4:2 Not tainted syzkaller #0 [ 67.126089][ T6] FAULT_INJECTION: forcing a failure. [ 67.126089][ T6] name failslab, interval 1, probability 10, space 0, times 28 [ 67.132204][ T45] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 67.132218][ T45] Workqueue: netns cleanup_net [ 67.132239][ T45] Call Trace: [ 67.132244][ T45] [ 67.132252][ T45] __dump_stack+0x21/0x30 [ 67.132268][ T45] dump_stack_lvl+0x110/0x170 [ 67.180159][ T45] ? show_regs_print_info+0x20/0x20 [ 67.185641][ T45] ? prandom_u32+0x24d/0x290 [ 67.190947][ T45] dump_stack+0x15/0x20 [ 67.195332][ T45] should_fail+0x3ab/0x500 [ 67.200371][ T45] ? inet6_netconf_notify_devconf+0xd6/0x190 [ 67.206954][ T45] __should_failslab+0xa4/0xe0 [ 67.211712][ T45] should_failslab+0x9/0x20 [ 67.216702][ T45] slab_pre_alloc_hook+0x39/0xd0 [ 67.224471][ T45] ? inet6_netconf_notify_devconf+0xd6/0x190 [ 67.231423][ T45] ? inet6_netconf_notify_devconf+0xd6/0x190 [ 67.242039][ T45] __kmalloc_track_caller+0x6c/0x2c0 [ 67.248318][ T45] ? inet6_netconf_notify_devconf+0xd6/0x190 [ 67.254700][ T45] ? inet6_netconf_notify_devconf+0xd6/0x190 [ 67.262093][ T45] __alloc_skb+0x210/0x730 [ 67.267652][ T45] inet6_netconf_notify_devconf+0xd6/0x190 [ 67.274121][ T45] addrconf_ifdown+0x15fd/0x1910 [ 67.279342][ T45] ? addrconf_cleanup+0x1c0/0x1c0 [ 67.284558][ T45] ? __kasan_check_write+0x14/0x20 [ 67.290732][ T45] ? mutex_unlock+0x8f/0x230 [ 67.297348][ T45] ? __mutex_lock_slowpath+0x10/0x10 [ 67.304342][ T45] ? _raw_spin_lock+0x94/0xf0 [ 67.309918][ T45] ? _raw_spin_trylock_bh+0x150/0x150 [ 67.317513][ T45] addrconf_notify+0x3bd/0xe00 [ 67.322735][ T45] raw_notifier_call_chain+0x90/0x100 [ 67.332120][ T45] unregister_netdevice_many+0x103d/0x1a00 [ 67.339325][ T45] ? alloc_netdev_mqs+0xe20/0xe20 [ 67.346579][ T45] ? unregister_netdevice_queue+0x17c/0x320 [ 67.353265][ T45] ? list_netdevice+0x4c0/0x4c0 [ 67.359785][ T45] ip6gre_exit_batch_net+0x5ca/0x620 [ 67.368415][ T45] ? ip6gre_init_net+0x340/0x340 [ 67.374686][ T45] ? ip6gre_init_net+0x340/0x340 [ 67.380515][ T45] cleanup_net+0x605/0xae0 [ 67.385822][ T45] ? ops_init+0x470/0x470 [ 67.390170][ T45] process_one_work+0x6c8/0xbb0 [ 67.396147][ T45] worker_thread+0xaa0/0x1250 [ 67.401979][ T45] ? __kasan_check_read+0x11/0x20 [ 67.408295][ T45] kthread+0x3f5/0x4f0 [ 67.413015][ T45] ? worker_clr_flags+0x190/0x190 [ 67.418354][ T45] ? kthread_blkcg+0xd0/0xd0 [ 67.424321][ T45] ret_from_fork+0x1f/0x30 [ 67.429247][ T45] [ 67.432871][ T6] CPU: 0 PID: 6 Comm: kworker/0:0 Not tainted syzkaller #0 [ 67.432961][ C1] FAULT_INJECTION: forcing a failure. [ 67.432961][ C1] name failslab, interval 1, probability 10, space 0, times 28 [ 67.440501][ T6] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 67.440515][ T6] Workqueue: mld mld_ifc_work [ 67.440535][ T6] Call Trace: [ 67.440541][ T6] [ 67.477392][ T6] __dump_stack+0x21/0x30 [ 67.483703][ T6] dump_stack_lvl+0x110/0x170 [ 67.488412][ T6] ? show_regs_print_info+0x20/0x20 [ 67.493888][ T6] ? prandom_u32+0x24d/0x290 [ 67.498968][ T6] dump_stack+0x15/0x20 [ 67.503758][ T6] should_fail+0x3ab/0x500 [ 67.508898][ T6] ? mld_newpack+0x143/0x9e0 [ 67.514022][ T6] __should_failslab+0xa4/0xe0 [ 67.519307][ T6] should_failslab+0x9/0x20 [ 67.524452][ T6] slab_pre_alloc_hook+0x39/0xd0 [ 67.529392][ T6] ? mld_newpack+0x143/0x9e0 [ 67.533990][ T6] ? mld_newpack+0x143/0x9e0 [ 67.538752][ T6] __kmalloc_track_caller+0x6c/0x2c0 [ 67.544147][ T6] ? mld_newpack+0x143/0x9e0 [ 67.549126][ T6] ? mld_newpack+0x143/0x9e0 [ 67.554171][ T6] __alloc_skb+0x210/0x730 [ 67.559199][ T6] mld_newpack+0x143/0x9e0 [ 67.564714][ T6] ? mld_sendpack+0xba0/0xba0 [ 67.569576][ T6] add_grec+0xee8/0x1340 [ 67.573929][ T6] ? wait_for_completion_killable_timeout+0x10/0x10 [ 67.580971][ T6] mld_ifc_work+0x728/0xc40 [ 67.585577][ T6] process_one_work+0x6c8/0xbb0 [ 67.590566][ T6] worker_thread+0xaa0/0x1250 [ 67.595266][ T6] kthread+0x3f5/0x4f0 [ 67.599863][ T6] ? worker_clr_flags+0x190/0x190 [ 67.605007][ T6] ? kthread_blkcg+0xd0/0xd0 [ 67.610141][ T6] ret_from_fork+0x1f/0x30 [ 67.614556][ T6] [ 67.617568][ C1] CPU: 1 PID: 45 Comm: kworker/u4:2 Not tainted syzkaller #0 [ 67.625201][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 67.635639][ T138] FAULT_INJECTION: forcing a failure. [ 67.635639][ T138] name failslab, interval 1, probability 10, space 0, times 27 [ 67.635959][ C1] Workqueue: netns cleanup_net [ 67.655549][ C1] Call Trace: [ 67.659636][ C1] [ 67.663145][ C1] __dump_stack+0x21/0x30 [ 67.667928][ C1] dump_stack_lvl+0x110/0x170 [ 67.672879][ C1] ? show_regs_print_info+0x20/0x20 [ 67.680107][ C1] ? prandom_u32+0x24d/0x290 [ 67.685573][ C1] dump_stack+0x15/0x20 [ 67.690016][ C1] should_fail+0x3ab/0x500 [ 67.695133][ C1] __should_failslab+0xa4/0xe0 [ 67.699916][ C1] should_failslab+0x9/0x20 [ 67.706584][ C1] slab_pre_alloc_hook+0x39/0xd0 [ 67.712568][ C1] kmem_cache_alloc_trace+0x48/0x270 [ 67.718566][ C1] ? dst_cow_metrics_generic+0x55/0x1c0 [ 67.724228][ C1] dst_cow_metrics_generic+0x55/0x1c0 [ 67.730595][ C1] icmp6_dst_alloc+0x35f/0x520 [ 67.735476][ C1] ndisc_send_skb+0x2a9/0xcf0 [ 67.740914][ C1] ? inet6_netconf_notify_devconf+0xd6/0x190 [ 67.747752][ C1] ? addrconf_ifdown+0x15fd/0x1910 [ 67.752953][ C1] ? addrconf_notify+0x3bd/0xe00 [ 67.758078][ C1] ? raw_notifier_call_chain+0x90/0x100 [ 67.764071][ C1] ? unregister_netdevice_many+0x103d/0x1a00 [ 67.770746][ C1] ? kthread+0x3f5/0x4f0 [ 67.774985][ C1] ? ndisc_alloc_skb+0x290/0x290 [ 67.780178][ C1] ndisc_send_rs+0x711/0x960 [ 67.785132][ C1] addrconf_rs_timer+0x35a/0x600 [ 67.790269][ C1] ? addrconf_disable_policy_idev+0x360/0x360 [ 67.796616][ C1] ? addrconf_disable_policy_idev+0x360/0x360 [ 67.802774][ C1] call_timer_fn+0x38/0x290 [ 67.807450][ C1] ? addrconf_disable_policy_idev+0x360/0x360 [ 67.814549][ C1] __run_timers+0x637/0x9a0 [ 67.819232][ C1] ? calc_index+0x200/0x200 [ 67.823819][ C1] ? sched_clock_cpu+0x18/0x3d0 [ 67.828660][ C1] run_timer_softirq+0x6a/0xf0 [ 67.833765][ C1] handle_softirqs+0x250/0x560 [ 67.838523][ C1] ? irqtime_account_irq+0xbe/0x390 [ 67.843913][ C1] __irq_exit_rcu+0x52/0xf0 [ 67.848850][ C1] irq_exit_rcu+0x9/0x10 [ 67.853084][ C1] sysvec_apic_timer_interrupt+0xa9/0xc0 [ 67.858818][ C1] [ 67.861880][ C1] [ 67.864921][ C1] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 67.871346][ C1] RIP: 0010:preempt_schedule_irq+0xa5/0x120 [ 67.877252][ C1] Code: 44 24 20 00 02 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 4d bf 01 00 00 00 e8 11 4d 95 fc fb bf 01 00 00 00 76 e4 ff ff fa bf 01 00 00 00 e8 ab 4e 95 fc 65 48 8b 1d 13 f7 [ 67.897553][ C1] RSP: 0018:ffffc900002ef440 EFLAGS: 00000246 [ 67.903800][ C1] RAX: 1ffff110208b7156 RBX: ffffc900002ef518 RCX: ffffffff870cbf00 [ 67.913453][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 [ 67.923295][ C1] RBP: ffffc900002ef4c8 R08: ffff8881045b8007 R09: 1ffff110208b7000 [ 67.932096][ C1] R10: dffffc0000000000 R11: ffffed10208b7001 R12: 0000000000000000 [ 67.941307][ C1] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200005de88 [ 67.949847][ C1] ? __cond_resched+0xd0/0xd0 [ 67.954733][ C1] irqentry_exit_cond_resched+0x29/0x30 [ 67.961470][ C1] irqentry_exit+0x37/0x40 [ 67.966819][ C1] sysvec_reschedule_ipi+0x78/0x80 [ 67.972015][ C1] asm_sysvec_reschedule_ipi+0x1b/0x20 [ 67.978267][ C1] RIP: 0010:dump_stack_lvl+0x144/0x170 [ 67.983895][ C1] Code: e6 00 02 00 00 31 ff e8 3a 97 be fc 49 81 e5 00 02 00 00 75 07 e8 ec 92 be fc eb 06 e8 e5 92 be fc fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 44 24 40 [ 68.003931][ C1] RSP: 0018:ffffc900002ef5c0 EFLAGS: 00000293 [ 68.009989][ C1] RAX: ffffffff84ab23fb RBX: ffffffff8564bda0 RCX: ffff8881045b8000 [ 68.018039][ C1] RDX: 0000000000000000 RSI: 0000000000000200 RDI: 0000000000000000 [ 68.026766][ C1] RBP: ffffc900002ef660 R08: 0000000000000003 R09: 0000000000000004 [ 68.034906][ C1] R10: dffffc0000000000 R11: fffffbfff0ce23f0 R12: dffffc0000000000 [ 68.042868][ C1] R13: 0000000000000200 R14: dffffc0000000004 R15: 1ffff9200005deb8 [ 68.051108][ C1] ? dump_stack_lvl+0x13b/0x170 [ 68.056243][ C1] ? show_regs_print_info+0x20/0x20 [ 68.061738][ C1] ? prandom_u32+0x24d/0x290 [ 68.066893][ C1] dump_stack+0x15/0x20 [ 68.071663][ C1] should_fail+0x3ab/0x500 [ 68.074407][ T184] FAULT_INJECTION: forcing a failure. [ 68.074407][ T184] name failslab, interval 1, probability 10, space 0, times 27 [ 68.076208][ C1] ? inet6_netconf_notify_devconf+0xd6/0x190 [ 68.076230][ C1] __should_failslab+0xa4/0xe0 [ 68.100929][ C1] should_failslab+0x9/0x20 [ 68.105576][ C1] slab_pre_alloc_hook+0x39/0xd0 [ 68.110723][ C1] ? inet6_netconf_notify_devconf+0xd6/0x190 [ 68.117665][ C1] ? inet6_netconf_notify_devconf+0xd6/0x190 [ 68.124220][ C1] __kmalloc_track_caller+0x6c/0x2c0 [ 68.129792][ C1] ? inet6_netconf_notify_devconf+0xd6/0x190 [ 68.136245][ C1] ? inet6_netconf_notify_devconf+0xd6/0x190 [ 68.142851][ C1] __alloc_skb+0x210/0x730 [ 68.148185][ C1] inet6_netconf_notify_devconf+0xd6/0x190 [ 68.154245][ C1] addrconf_ifdown+0x15fd/0x1910 [ 68.159176][ C1] ? addrconf_cleanup+0x1c0/0x1c0 [ 68.164482][ C1] ? __kasan_check_write+0x14/0x20 [ 68.169606][ C1] ? mutex_unlock+0x8f/0x230 [ 68.174622][ C1] ? __mutex_lock_slowpath+0x10/0x10 [ 68.179905][ C1] ? _raw_spin_lock+0x94/0xf0 [ 68.184868][ C1] ? _raw_spin_trylock_bh+0x150/0x150 [ 68.190731][ C1] addrconf_notify+0x3bd/0xe00 [ 68.196142][ C1] raw_notifier_call_chain+0x90/0x100 [ 68.201514][ C1] unregister_netdevice_many+0x103d/0x1a00 [ 68.207405][ C1] ? alloc_netdev_mqs+0xe20/0xe20 [ 68.212416][ C1] ? unregister_netdevice_queue+0x17c/0x320 [ 68.218482][ C1] ? list_netdevice+0x4c0/0x4c0 [ 68.223516][ C1] ip6gre_exit_batch_net+0x5ca/0x620 [ 68.229358][ C1] ? ip6gre_init_net+0x340/0x340 [ 68.234390][ C1] ? ip6gre_init_net+0x340/0x340 [ 68.239322][ C1] cleanup_net+0x605/0xae0 [ 68.243731][ C1] ? ops_init+0x470/0x470 [ 68.248050][ C1] process_one_work+0x6c8/0xbb0 [ 68.253186][ C1] worker_thread+0xaa0/0x1250 [ 68.257871][ C1] ? __kasan_check_read+0x11/0x20 [ 68.263331][ C1] kthread+0x3f5/0x4f0 [ 68.267493][ C1] ? worker_clr_flags+0x190/0x190 [ 68.272965][ C1] ? kthread_blkcg+0xd0/0xd0 [ 68.277571][ C1] ret_from_fork+0x1f/0x30 [ 68.282001][ C1] [ 68.286145][ T39] FAULT_INJECTION: forcing a failure. [ 68.286145][ T39] name failslab, interval 1, probability 10, space 0, times 26 [ 68.286201][ T89] CPU: 0 PID: 89 Comm: klogd Not tainted syzkaller #0 [ 68.306455][ T89] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 68.317020][ T89] Call Trace: [ 68.320312][ T89] [ 68.323231][ T89] __dump_stack+0x21/0x30 [ 68.327551][ T89] dump_stack_lvl+0x110/0x170 [ 68.332662][ T89] ? show_regs_print_info+0x20/0x20 [ 68.338130][ T89] ? prandom_u32+0x24d/0x290 [ 68.344411][ T89] dump_stack+0x15/0x20 [ 68.349273][ T89] should_fail+0x3ab/0x500 [ 68.353875][ T89] __should_failslab+0xa4/0xe0 [ 68.359270][ T89] should_failslab+0x9/0x20 [ 68.364323][ T89] slab_pre_alloc_hook+0x39/0xd0 [ 68.369271][ T89] ? __alloc_skb+0xe4/0x730 [ 68.374080][ T89] kmem_cache_alloc+0x44/0x260 [ 68.379030][ T89] __alloc_skb+0xe4/0x730 [ 68.383539][ T89] alloc_skb_with_frags+0xa8/0x620 [ 68.389033][ T89] ? memcpy+0x56/0x70 [ 68.393470][ T89] sock_alloc_send_pskb+0x87f/0x9a0 [ 68.398868][ T89] ? sock_kzfree_s+0x60/0x60 [ 68.403943][ T89] ? __kasan_check_write+0x14/0x20 [ 68.409567][ T89] ? _raw_spin_lock+0x94/0xf0 [ 68.414370][ T89] ? _raw_spin_trylock_bh+0x150/0x150 [ 68.420806][ T89] unix_dgram_sendmsg+0x6f3/0x19b0 [ 68.426431][ T89] ? unix_dgram_poll+0x6c0/0x6c0 [ 68.432168][ T89] ? path_put+0x57/0x60 [ 68.437043][ T89] ? security_socket_sendmsg+0x82/0xa0 [ 68.442508][ T89] __sys_sendto+0x46d/0x620 [ 68.447213][ T89] ? __ia32_sys_getpeername+0x90/0x90 [ 68.453495][ T89] ? __kasan_check_write+0x14/0x20 [ 68.458713][ T89] __x64_sys_sendto+0xe5/0x100 [ 68.465298][ T89] x64_sys_call+0x178/0x9a0 [ 68.470019][ T89] do_syscall_64+0x4c/0xa0 [ 68.474517][ T89] ? clear_bhb_loop+0x50/0xa0 [ 68.479634][ T89] ? clear_bhb_loop+0x50/0xa0 [ 68.484484][ T89] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 68.490465][ T89] RIP: 0033:0x7fca11087407 [ 68.495148][ T89] Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 68.515487][ T89] RSP: 002b:00007ffe548605a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 68.524337][ T89] RAX: ffffffffffffffda RBX: 00007fca10f37c80 RCX: 00007fca11087407 [ 68.532803][ T89] RDX: 000000000000004a RSI: 00007ffe548606e0 RDI: 0000000000000003 [ 68.541331][ T89] RBP: 00007ffe54860b10 R08: 0000000000000000 R09: 0000000000000000 [ 68.550121][ T89] R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffe54860b28 [ 68.560071][ T89] R13: 00007ffe548606e0 R14: 000000000000002f R15: 00007ffe548606e0 [ 68.570844][ T89] [ 68.574044][ T138] CPU: 1 PID: 138 Comm: dhcpcd Not tainted syzkaller #0 [ 68.574105][ C0] FAULT_INJECTION: forcing a failure. [ 68.574105][ C0] name failslab, interval 1, probability 10, space 0, times 26 [ 68.581783][ T138] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 68.581800][ T138] Call Trace: [ 68.581806][ T138] [ 68.581813][ T138] __dump_stack+0x21/0x30 [ 68.620495][ T138] dump_stack_lvl+0x110/0x170 [ 68.625822][ T138] ? show_regs_print_info+0x20/0x20 [ 68.632481][ T138] ? prandom_u32+0x24d/0x290 [ 68.637286][ T138] dump_stack+0x15/0x20 [ 68.641813][ T138] should_fail+0x3ab/0x500 [ 68.646253][ T138] ? alloc_skb_with_frags+0xa8/0x620 [ 68.651840][ T138] __should_failslab+0xa4/0xe0 [ 68.656979][ T138] should_failslab+0x9/0x20 [ 68.661975][ T138] slab_pre_alloc_hook+0x39/0xd0 [ 68.667721][ T138] ? alloc_skb_with_frags+0xa8/0x620 [ 68.673204][ T138] ? alloc_skb_with_frags+0xa8/0x620 [ 68.679402][ T138] __kmalloc_track_caller+0x6c/0x2c0 [ 68.685565][ T138] ? alloc_skb_with_frags+0xa8/0x620 [ 68.691126][ T138] ? alloc_skb_with_frags+0xa8/0x620 [ 68.696406][ T138] __alloc_skb+0x210/0x730 [ 68.700817][ T138] alloc_skb_with_frags+0xa8/0x620 [ 68.707490][ T138] ? avc_has_perm_noaudit+0x390/0x490 [ 68.713145][ T138] sock_alloc_send_pskb+0x87f/0x9a0 [ 68.718534][ T138] ? avc_denied+0x1b0/0x1b0 [ 68.723427][ T138] ? sock_kzfree_s+0x60/0x60 [ 68.728212][ T138] ? __kasan_check_write+0x14/0x20 [ 68.733335][ T138] ? _raw_spin_lock+0x94/0xf0 [ 68.738843][ T138] ? _raw_spin_trylock_bh+0x150/0x150 [ 68.744922][ T138] ? avc_has_perm+0x163/0x250 [ 68.749859][ T138] unix_dgram_sendmsg+0x6f3/0x19b0 [ 68.755051][ T138] ? __wake_up_sync_key+0x17b/0x2b0 [ 68.760248][ T138] ? selinux_socket_sendmsg+0x22f/0x340 [ 68.766052][ T138] ? selinux_socket_accept+0x570/0x570 [ 68.771599][ T138] ? unix_dgram_poll+0x6c0/0x6c0 [ 68.776535][ T138] ? sock_def_readable+0x1c8/0x320 [ 68.782161][ T138] ? __kasan_check_write+0x14/0x20 [ 68.787369][ T138] unix_seqpacket_sendmsg+0x118/0x1e0 [ 68.792890][ T138] sock_write_iter+0x2a6/0x3a0 [ 68.797674][ T138] ? sock_read_iter+0x380/0x380 [ 68.802632][ T138] ? file_has_perm+0x52d/0x700 [ 68.807536][ T138] do_iter_readv_writev+0x477/0x5f0 [ 68.812827][ T138] ? generic_file_rw_checks+0x2a0/0x2a0 [ 68.818469][ T138] ? fsnotify_perm+0x67/0x5b0 [ 68.823251][ T138] ? security_file_permission+0x79/0xa0 [ 68.829526][ T138] ? security_file_permission+0x83/0xa0 [ 68.835076][ T138] do_iter_write+0x207/0x7b0 [ 68.839670][ T138] vfs_writev+0x2df/0x570 [ 68.844079][ T138] ? do_writev+0x2c0/0x2c0 [ 68.848494][ T138] ? __kasan_check_read+0x11/0x20 [ 68.853704][ T138] ? __fdget_pos+0x1f7/0x380 [ 68.858280][ T138] do_writev+0x14e/0x2c0 [ 68.862774][ T138] ? do_readv+0x450/0x450 [ 68.867332][ T138] ? __secure_computing+0xea/0x290 [ 68.873095][ T138] __x64_sys_writev+0x7d/0x90 [ 68.877992][ T138] x64_sys_call+0x974/0x9a0 [ 68.883617][ T138] do_syscall_64+0x4c/0xa0 [ 68.888743][ T138] ? clear_bhb_loop+0x50/0xa0 [ 68.893514][ T138] ? clear_bhb_loop+0x50/0xa0 [ 68.898217][ T138] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 68.904200][ T138] RIP: 0033:0x7f91d1ed6407 [ 68.908648][ T138] Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 68.928859][ T138] RSP: 002b:00007ffccf35c7b0 EFLAGS: 00000202 ORIG_RAX: 0000000000000014 [ 68.937658][ T138] RAX: ffffffffffffffda RBX: 00007f91d1e4c740 RCX: 00007f91d1ed6407 [ 68.945897][ T138] RDX: 0000000000000005 RSI: 00007ffccf35c810 RDI: 000000000000000a [ 68.954337][ T138] RBP: 0000557b82090c60 R08: 0000000000000000 R09: 0000000000000000 [ 68.962789][ T138] R10: 0000000000000000 R11: 0000000000000202 R12: 0000557b82090c60 [ 68.970881][ T138] R13: 000000000000012c R14: 00000000ffffffff R15: 0000000000000000 [ 68.978853][ T138] [ 68.982550][ C0] CPU: 0 PID: 89 Comm: klogd Not tainted syzkaller #0 [ 68.982727][ T2] FAULT_INJECTION: forcing a failure. [ 68.982727][ T2] name failslab, interval 1, probability 10, space 0, times 26 [ 68.989789][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 68.989803][ C0] Call Trace: [ 68.989808][ C0] [ 68.989815][ C0] __dump_stack+0x21/0x30 [ 69.025143][ C0] dump_stack_lvl+0x110/0x170 [ 69.029822][ C0] ? show_regs_print_info+0x20/0x20 [ 69.035030][ C0] ? prandom_u32+0x24d/0x290 [ 69.039737][ C0] dump_stack+0x15/0x20 [ 69.043907][ C0] should_fail+0x3ab/0x500 [ 69.048336][ C0] __should_failslab+0xa4/0xe0 [ 69.053191][ C0] should_failslab+0x9/0x20 [ 69.057693][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 69.062836][ C0] ? __alloc_skb+0xe4/0x730 [ 69.067713][ C0] kmem_cache_alloc+0x44/0x260 [ 69.072489][ C0] ? check_preempt_wakeup+0x11a/0xbb0 [ 69.077896][ C0] __alloc_skb+0xe4/0x730 [ 69.082235][ C0] ndisc_send_rs+0x310/0x960 [ 69.086984][ C0] ? ndisc_send_rs+0x131/0x960 [ 69.091735][ C0] addrconf_rs_timer+0x35a/0x600 [ 69.097070][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 69.103250][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 69.109689][ C0] call_timer_fn+0x38/0x290 [ 69.114299][ C0] ? addrconf_disable_policy_idev+0x360/0x360 [ 69.120844][ C0] __run_timers+0x637/0x9a0 [ 69.125590][ C0] ? calc_index+0x200/0x200 [ 69.130105][ C0] ? sched_clock_cpu+0x18/0x3d0 [ 69.134951][ C0] run_timer_softirq+0x6a/0xf0 [ 69.139920][ C0] handle_softirqs+0x250/0x560 [ 69.144792][ C0] ? irqtime_account_irq+0xbe/0x390 [ 69.150262][ C0] __irq_exit_rcu+0x52/0xf0 [ 69.154892][ C0] irq_exit_rcu+0x9/0x10 [ 69.159130][ C0] sysvec_apic_timer_interrupt+0xa9/0xc0 [ 69.164772][ C0] [ 69.165523][ T373] FAULT_INJECTION: forcing a failure. [ 69.165523][ T373] name failslab, interval 1, probability 10, space 0, times 26 [ 69.167694][ C0] [ 69.167701][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 69.189659][ C0] RIP: 0010:preempt_schedule_irq+0xa5/0x120 [ 69.195567][ C0] Code: 44 24 20 00 02 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 4d bf 01 00 00 00 e8 11 4d 95 fc fb bf 01 00 00 00 76 e4 ff ff fa bf 01 00 00 00 e8 ab 4e 95 fc 65 48 8b 1d 13 f7 [ 69.215259][ C0] RSP: 0018:ffffc900009a7540 EFLAGS: 00000246 [ 69.221498][ C0] RAX: 1ffff11021af7156 RBX: ffffc900009a7618 RCX: ffffffff870cbf00 [ 69.229643][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 [ 69.238142][ C0] RBP: ffffc900009a75c8 R08: ffff88810d7b8007 R09: 1ffff11021af7000 [ 69.246190][ C0] R10: dffffc0000000000 R11: ffffed1021af7001 R12: 0000000000000000 [ 69.254760][ C0] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000134ea8 [ 69.262726][ C0] ? __cond_resched+0xd0/0xd0 [ 69.267404][ C0] irqentry_exit_cond_resched+0x29/0x30 [ 69.273465][ C0] irqentry_exit+0x37/0x40 [ 69.277880][ C0] sysvec_reschedule_ipi+0x78/0x80 [ 69.283164][ C0] asm_sysvec_reschedule_ipi+0x1b/0x20 [ 69.288969][ C0] RIP: 0010:dump_stack_lvl+0x144/0x170 [ 69.294426][ C0] Code: e6 00 02 00 00 31 ff e8 3a 97 be fc 49 81 e5 00 02 00 00 75 07 e8 ec 92 be fc eb 06 e8 e5 92 be fc fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 44 24 40 [ 69.314530][ C0] RSP: 0018:ffffc900009a76c0 EFLAGS: 00000293 [ 69.320680][ C0] RAX: ffffffff84ab23fb RBX: ffffffff8564bda0 RCX: ffff88810d7b8000 [ 69.328816][ C0] RDX: 0000000000000000 RSI: 0000000000000200 RDI: 0000000000000000 [ 69.338073][ C0] RBP: ffffc900009a7760 R08: 0000000000000003 R09: 0000000000000004 [ 69.346048][ C0] R10: dffffc0000000000 R11: fffffbfff0ce23f0 R12: dffffc0000000000 [ 69.354911][ C0] R13: 0000000000000200 R14: dffffc0000000004 R15: 1ffff92000134ed8 [ 69.363386][ C0] ? dump_stack_lvl+0x13b/0x170 [ 69.368431][ C0] ? show_regs_print_info+0x20/0x20 [ 69.374113][ C0] ? prandom_u32+0x24d/0x290 [ 69.378704][ C0] dump_stack+0x15/0x20 [ 69.383836][ C0] should_fail+0x3ab/0x500 [ 69.388623][ C0] __should_failslab+0xa4/0xe0 [ 69.394486][ C0] should_failslab+0x9/0x20 [ 69.399096][ C0] slab_pre_alloc_hook+0x39/0xd0 [ 69.404046][ C0] ? __alloc_skb+0xe4/0x730 [ 69.408681][ C0] kmem_cache_alloc+0x44/0x260 [ 69.414061][ C0] __alloc_skb+0xe4/0x730 [ 69.418568][ C0] alloc_skb_with_frags+0xa8/0x620 [ 69.423959][ C0] ? memcpy+0x56/0x70 [ 69.428039][ C0] sock_alloc_send_pskb+0x87f/0x9a0 [ 69.433360][ C0] ? sock_kzfree_s+0x60/0x60 [ 69.437939][ C0] ? __kasan_check_write+0x14/0x20 [ 69.443053][ C0] ? _raw_spin_lock+0x94/0xf0 [ 69.448130][ C0] ? _raw_spin_trylock_bh+0x150/0x150 [ 69.454128][ C0] unix_dgram_sendmsg+0x6f3/0x19b0 [ 69.459522][ C0] ? unix_dgram_poll+0x6c0/0x6c0 [ 69.465347][ C0] ? path_put+0x57/0x60 [ 69.469800][ C0] ? security_socket_sendmsg+0x82/0xa0 [ 69.476721][ C0] __sys_sendto+0x46d/0x620 [ 69.481412][ C0] ? __ia32_sys_getpeername+0x90/0x90 [ 69.487403][ C0] ? __kasan_check_write+0x14/0x20 [ 69.492894][ C0] __x64_sys_sendto+0xe5/0x100 [ 69.498681][ C0] x64_sys_call+0x178/0x9a0 [ 69.503381][ C0] do_syscall_64+0x4c/0xa0 [ 69.507878][ C0] ? clear_bhb_loop+0x50/0xa0 [ 69.512945][ C0] ? clear_bhb_loop+0x50/0xa0 [ 69.517813][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 69.523820][ C0] RIP: 0033:0x7fca11087407 [ 69.528232][ C0] Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 69.548262][ C0] RSP: 002b:00007ffe548605a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 69.556668][ C0] RAX: ffffffffffffffda RBX: 00007fca10f37c80 RCX: 00007fca11087407 [ 69.564721][ C0] RDX: 000000000000004a RSI: 00007ffe548606e0 RDI: 0000000000000003 [ 69.572792][ C0] RBP: 00007ffe54860b10 R08: 0000000000000000 R09: 0000000000000000 [ 69.581244][ C0] R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffe54860b28 [ 69.589835][ C0] R13: 00007ffe548606e0 R14: 000000000000002f R15: 00007ffe548606e0 [ 69.599003][ C0] [ 69.602725][ T373] CPU: 1 PID: 373 Comm: kworker/1:3 Not tainted syzkaller #0 [ 69.603963][ T89] FAULT_INJECTION: forcing a failure. [ 69.603963][ T89] name failslab, interval 1, probability 10, space 0, times 24 [ 69.610548][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 69.610566][ T373] Workqueue: events_power_efficient neigh_periodic_work [ 69.610591][ T373] Call Trace: [ 69.647727][ T373] [ 69.650939][ T373] __dump_stack+0x21/0x30 [ 69.656580][ T373] dump_stack_lvl+0x110/0x170 [ 69.663902][ T373] ? show_regs_print_info+0x20/0x20 [ 69.670079][ T373] ? prandom_u32+0x24d/0x290 [ 69.675976][ T373] dump_stack+0x15/0x20 [ 69.680961][ T373] should_fail+0x3ab/0x500 [ 69.686300][ T373] ? __neigh_notify+0x84/0x130 [ 69.691172][ T373] __should_failslab+0xa4/0xe0 [ 69.697032][ T373] should_failslab+0x9/0x20 [ 69.701546][ T373] slab_pre_alloc_hook+0x39/0xd0 [ 69.706593][ T373] ? __neigh_notify+0x84/0x130 [ 69.712066][ T373] ? __neigh_notify+0x84/0x130 [ 69.716880][ T373] __kmalloc_track_caller+0x6c/0x2c0 [ 69.722711][ T373] ? __neigh_notify+0x84/0x130 [ 69.727554][ T373] ? __neigh_notify+0x84/0x130 [ 69.732311][ T373] __alloc_skb+0x210/0x730 [ 69.736731][ T373] __neigh_notify+0x84/0x130 [ 69.741846][ T373] neigh_cleanup_and_release+0x2c/0x1a0 [ 69.747400][ T373] neigh_periodic_work+0x891/0xaa0 [ 69.752500][ T373] process_one_work+0x6c8/0xbb0 [ 69.757615][ T373] worker_thread+0xaa0/0x1250 [ 69.762510][ T373] kthread+0x3f5/0x4f0 [ 69.766691][ T373] ? worker_clr_flags+0x190/0x190 [ 69.771711][ T373] ? kthread_blkcg+0xd0/0xd0 [ 69.776289][ T373] ret_from_fork+0x1f/0x30 [ 69.780705][ T373] [ 69.783813][ T89] CPU: 0 PID: 89 Comm: klogd Not tainted syzkaller #0 [ 69.790574][ T89] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 69.801322][ T89] Call Trace: [ 69.804605][ T89] [ 69.807525][ T89] __dump_stack+0x21/0x30 [ 69.811848][ T89] dump_stack_lvl+0x110/0x170 [ 69.816545][ T89] ? show_regs_print_info+0x20/0x20 [ 69.821995][ T89] ? prandom_u32+0x24d/0x290 [ 69.826944][ T89] dump_stack+0x15/0x20 [ 69.831595][ T89] should_fail+0x3ab/0x500