bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5213/1:b..l P5843/1:b..l P25297/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=285677, q=4335 ncpus=1)
task:syz.1.7008      state:R  running task     stack:26624 pid:25297 tgid:25294 ppid:21620  task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5387 [inline]
 __schedule+0x10e9/0x6820 kernel/sched/core.c:7188
 preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7512
 irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:476 [inline]
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline]
 irqentry_exit+0x1fe/0x790 kernel/entry/common.c:164
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:stack_access_ok+0xe/0x1d0 arch/x86/kernel/unwind_orc.c:405
Code: 5d c3 cc cc cc cc e8 61 af df 09 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 b8 00 00 00 00 00 fc ff df 41 55 41 54 <49> 89 d4 48 89 fa 55 48 c1 ea 03 48 89 f5 53 48 89 fb 48 83 ec 08
RSP: 0018:ffffc90005b8efd8 EFLAGS: 00000287
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffff91900246
RDX: 0000000000000008 RSI: ffffc90005b8f560 RDI: ffffc90005b8f060
RBP: ffffc90005b8f560 R08: 0000000000000001 R09: 0000000000000007
R10: 0000000000000200 R11: 000000000001b7fe R12: ffffc90005b8f0b0
R13: ffffc90005b8f060 R14: ffffc90005b8f590 R15: ffffc90005b8f094
 deref_stack_reg arch/x86/kernel/unwind_orc.c:419 [inline]
 unwind_next_frame+0x1551/0x2090 arch/x86/kernel/unwind_orc.c:677
 arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
 save_stack+0x162/0x1e0 mm/page_owner.c:165
 __reset_page_owner+0x84/0x190 mm/page_owner.c:320
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1402 [inline]
 __free_frozen_pages+0x747/0x1040 mm/page_alloc.c:2943
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x47/0xf0 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:350
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4569 [inline]
 slab_alloc_node mm/slub.c:4898 [inline]
 kmem_cache_alloc_noprof+0x241/0x6e0 mm/slub.c:4905
 __kernfs_new_node+0xd2/0x9f0 fs/kernfs/dir.c:664
 kernfs_new_node+0x11b/0x1a0 fs/kernfs/dir.c:748
 __kernfs_create_file+0x53/0x350 fs/kernfs/file.c:1057
 sysfs_add_file_mode_ns+0x207/0x3c0 fs/sysfs/file.c:313
 create_files fs/sysfs/group.c:82 [inline]
 internal_create_group+0x593/0xf40 fs/sysfs/group.c:189
 internal_create_groups+0x9d/0x150 fs/sysfs/group.c:229
 device_add_groups drivers/base/core.c:2837 [inline]
 device_add_attrs drivers/base/core.c:2907 [inline]
 device_add+0x77a/0x1950 drivers/base/core.c:3645
 add_mtd_device+0x928/0x17a0 drivers/mtd/mtdcore.c:801
 mtd_add_partition+0x30a/0x660 drivers/mtd/mtdpart.c:280
 mtdchar_blkpg_ioctl+0x207/0x250 drivers/mtd/mtdchar.c:562
 mtdchar_ioctl+0x1670/0x1fd0 drivers/mtd/mtdchar.c:1218
 mtdchar_unlocked_ioctl+0xb0/0xf0 drivers/mtd/mtdchar.c:1241
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6d0799c819
RSP: 002b:00007f6d087ae028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6d07c16180 RCX: 00007f6d0799c819
RDX: 0000000000000000 RSI: 0000000000001269 RDI: 0000000000000004
RBP: 00007f6d07a32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6d07c16218 R14: 00007f6d07c16180 R15: 00007fffd3ebcf88
 </TASK>
task:syz-executor    state:R  running task     stack:23992 pid:5843  tgid:5843  ppid:5840   task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5387 [inline]
 __schedule+0x10e9/0x6820 kernel/sched/core.c:7188
 preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7512
 irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:476 [inline]
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline]
 irqentry_exit+0x1fe/0x790 kernel/entry/common.c:164
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:231 [inline]
RIP: 0010:unwind_next_frame+0x2bb/0x2090 arch/x86/kernel/unwind_orc.c:510
Code: 20 44 8b 5c 24 18 89 cf 8b 14 95 5c 42 38 92 48 8d 04 7f 48 8d 84 00 40 3b 72 91 83 c2 01 48 3d 5a 42 38 92 0f 83 ab 08 00 00 <41> 89 d0 4f 8d 04 40 4f 8d 84 00 40 3b 72 91 49 81 f8 5a 42 38 92
RSP: 0018:ffffc90003a07318 EFLAGS: 00000297
RAX: ffffffff918b7d24 RBX: 0000000000000001 RCX: 00000000000435a6
RDX: 00000000000435af RSI: 00000000000a9c21 RDI: 00000000000435a6
RBP: ffffc90003a073d0 R08: 0000000000000000 R09: 0000000000000007
R10: 0000000000000200 R11: 0000000000018016 R12: ffffc90003a073d8
R13: ffffc90003a07388 R14: ffffc90003a073bd R15: ffffffff828016d3
 arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
 save_stack+0x162/0x1e0 mm/page_owner.c:165
 __reset_page_owner+0x84/0x190 mm/page_owner.c:320
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1402 [inline]
 free_unref_folios+0xa0d/0x16f0 mm/page_alloc.c:3004
 folios_put_refs+0x571/0xa90 mm/swap.c:1008
 folio_batch_release include/linux/folio_batch.h:101 [inline]
 shmem_undo_range+0x5e5/0x1570 mm/shmem.c:1149
 shmem_truncate_range mm/shmem.c:1277 [inline]
 shmem_evict_inode+0x3f3/0xc40 mm/shmem.c:1407
 evict+0x3c2/0xad0 fs/inode.c:841
 iput_final fs/inode.c:1960 [inline]
 iput.part.0+0x605/0xf50 fs/inode.c:2009
 iput+0x35/0x40 fs/inode.c:1975
 filename_unlinkat+0x466/0x730 fs/namei.c:5572
 __do_sys_unlink fs/namei.c:5603 [inline]
 __se_sys_unlink fs/namei.c:5600 [inline]
 __x64_sys_unlink+0x46/0x70 fs/namei.c:5600
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f18a979b907
RSP: 002b:00007ffda4ecbb38 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f18a979b907
RDX: 00007ffda4ecbb60 RSI: 00007ffda4ecbbf0 RDI: 00007ffda4ecbbf0
RBP: 00007ffda4ecbbf0 R08: 00007ffda4eccbf0 R09: 00000000ffffffff
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffda4eccc80
R13: 00007f18a9832048 R14: 0000000000106d8d R15: 00007ffda4ecccc0
 </TASK>
task:udevd           state:R  running task     stack:24600 pid:5213  tgid:5213  ppid:1      task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5387 [inline]
 __schedule+0x10e9/0x6820 kernel/sched/core.c:7188
 preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7512
 irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:476 [inline]
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline]
 irqentry_exit+0x1fe/0x790 kernel/entry/common.c:164
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:unwind_next_frame+0x15c/0x2090 arch/x86/kernel/unwind_orc.c:510
Code: 88 00 00 00 03 0f 85 3b 02 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8d 75 35 4c 89 f2 48 c1 ea 03 0f b6 04 02 4c 89 f2 83 e2 07 <38> d0 7f 08 84 c0 0f 85 24 0a 00 00 48 89 e9 41 0f b6 45 35 48 ba
RSP: 0018:ffffc90003c07370 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000002
RDX: 0000000000000005 RSI: ffffffff8c1c1080 RDI: ffffffff8e208920
RBP: ffffc90003c07428 R08: 00000000475c6dad R09: 0000000000000007
R10: 0000000000000200 R11: 0000000000000000 R12: ffffc90003c07430
R13: ffffc90003c073e0 R14: ffffc90003c07415 R15: ffff88807fb5bd80
 arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
 save_stack+0x162/0x1e0 mm/page_owner.c:165
 __reset_page_owner+0x84/0x190 mm/page_owner.c:320
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1402 [inline]
 __free_frozen_pages+0x747/0x1040 mm/page_alloc.c:2943
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x47/0xf0 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:350
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4569 [inline]
 slab_alloc_node mm/slub.c:4898 [inline]
 __kmalloc_cache_noprof+0x243/0x6f0 mm/slub.c:5410
 kmalloc_noprof include/linux/slab.h:950 [inline]
 kzalloc_noprof include/linux/slab.h:1188 [inline]
 tomoyo_write_log2 security/tomoyo/audit.c:377 [inline]
 tomoyo_write_log2+0x333/0xbc0 security/tomoyo/audit.c:364
 tomoyo_supervisor+0x15e/0x1340 security/tomoyo/common.c:2208
 tomoyo_audit_path_log security/tomoyo/file.c:169 [inline]
 tomoyo_path_permission security/tomoyo/file.c:592 [inline]
 tomoyo_path_permission+0x270/0x3b0 security/tomoyo/file.c:577
 tomoyo_path_perm+0x364/0x460 security/tomoyo/file.c:843
 security_inode_getattr+0x116/0x280 security/security.c:1895
 vfs_getattr fs/stat.c:259 [inline]
 vfs_statx_path fs/stat.c:299 [inline]
 vfs_statx+0x11f/0x3f0 fs/stat.c:356
 vfs_fstatat+0x77/0xe0 fs/stat.c:373
 __do_sys_newfstatat+0x9d/0x120 fs/stat.c:538
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9d41911b0a
RSP: 002b:00007ffdf0f928b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 000055b350253410 RCX: 00007f9d41911b0a
RDX: 00007ffdf0f928c0 RSI: 000055b3502412a8 RDI: 00000000ffffff9c
RBP: 000055b373695148 R08: 00063478c1c69200 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffdf0f928c0 R14: 0000000000000000 R15: 00063478c1c69200
 </TASK>
rcu: rcu_preempt kthread starved for 4584 jiffies! g285677 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:28216 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5387 [inline]
 __schedule+0x10e9/0x6820 kernel/sched/core.c:7188
 __schedule_loop kernel/sched/core.c:7267 [inline]
 schedule+0xdd/0x390 kernel/sched/core.c:7282
 schedule_timeout+0x127/0x280 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x1a9/0x900 kernel/rcu/tree.c:2095
 rcu_gp_kthread+0x179/0x230 kernel/rcu/tree.c:2297
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 3428 Comm: kworker/R-bat_e Tainted: P             L      syzkaller #0 PREEMPT(full) 
Tainted: [P]=PROPRIETARY_MODULE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: bat_events batadv_tt_purge
RIP: 0010:in_softirq_really kernel/kcov.c:171 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x23/0x70 kernel/kcov.c:217
Code: 90 90 90 90 90 90 90 f3 0f 1e fa 65 8b 05 05 19 0b 12 48 8b 34 24 65 48 8b 15 e1 18 0b 12 a9 00 01 ff 00 74 1b f6 c4 01 74 07 <a9> 00 00 ff 00 74 05 e9 91 73 92 09 8b 82 cc 16 00 00 85 c0 74 f1
RSP: 0018:ffffc90000007330 EFLAGS: 00000202
RAX: 0000000080000101 RBX: 0000000000000000 RCX: ffffffff89617b58
RDX: ffff888033c03d80 RSI: ffffffff89617b66 RDI: ffff888033c03d80
RBP: 0000000000000002 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88814f8eb3c0
R13: 0000000000000001 R14: ffff88814f8eb3c0 R15: ffff88814f8eb43f
FS:  0000000000000000(0000) GS:ffff8881242e2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b37368e088 CR3: 0000000079132000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 skb_ext_add+0x66/0x810 net/core/skbuff.c:7136
 tc_skb_ext_alloc include/net/pkt_cls.h:777 [inline]
 br_tc_skb_miss_set net/bridge/br_private.h:793 [inline]
 br_tc_skb_miss_set net/bridge/br_private.h:779 [inline]
 br_flood+0x4f0/0x650 net/bridge/br_forward.c:209
 br_handle_frame_finish+0xff4/0x1f60 net/bridge/br_input.c:229
 br_nf_hook_thresh+0x30d/0x420 net/bridge/br_netfilter_hooks.c:1161
 br_nf_pre_routing_finish_ipv6+0x659/0xdd0 net/bridge/br_netfilter_ipv6.c:153
 NF_HOOK include/linux/netfilter.h:318 [inline]
 br_nf_pre_routing_ipv6+0x39c/0x8b0 net/bridge/br_netfilter_ipv6.c:183
 br_nf_pre_routing+0x90f/0x1560 net/bridge/br_netfilter_hooks.c:509
 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
 nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
 br_handle_frame+0xcdd/0x1520 net/bridge/br_input.c:442
 __netif_receive_skb_core.constprop.0+0x6c5/0x3530 net/core/dev.c:6096
 __netif_receive_skb_one_core+0xb0/0x1e0 net/core/dev.c:6207
 __netif_receive_skb+0x1f/0x120 net/core/dev.c:6322
 process_backlog+0x37a/0x1580 net/core/dev.c:6673
 __napi_poll.constprop.0+0xaf/0x450 net/core/dev.c:7737
 napi_poll net/core/dev.c:7800 [inline]
 net_rx_action+0xa40/0xf20 net/core/dev.c:7957
 handle_softirqs+0x1ea/0xa00 kernel/softirq.c:622
 do_softirq kernel/softirq.c:523 [inline]
 do_softirq+0xac/0xe0 kernel/softirq.c:510
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0xf8/0x120 kernel/softirq.c:450
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 batadv_tt_global_purge net/batman-adv/translation-table.c:2255 [inline]
 batadv_tt_purge+0x25d/0xbd0 net/batman-adv/translation-table.c:3515
 process_one_work+0xa0e/0x1980 kernel/workqueue.c:3302
 process_scheduled_works kernel/workqueue.c:3385 [inline]
 rescuer_thread+0x905/0x14a0 kernel/workqueue.c:3609
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
net_ratelimit: 23454 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
net_ratelimit: 39741 callbacks suppressed
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)