rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5283/1:b..l P2/1:b..l P17160/1:b..l
rcu: 	(detected by 1, t=10506 jiffies, g=259029, q=1752718 ncpus=2)
task:kworker/u8:3    state:R  running task     stack:22408 pid:17160 tgid:17160 ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: krds_cp_wq#29/0 rds_connect_worker
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5504 [inline]
 __schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7552
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
 irqentry_exit+0x14f/0x8f0 kernel/entry/common.c:167
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:228 [inline]
RIP: 0010:unwind_next_frame+0x1f6/0x2550 arch/x86/kernel/unwind_orc.c:510
Code: 08 8b 15 dd 29 b1 0c 8d 42 ff 44 39 f8 0f 86 6c 04 00 00 44 89 f8 4c 8d 2c 85 24 a2 71 91 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 <84> c0 4c 89 e3 0f 85 66 1d 00 00 45 8b 6d 00 44 89 f8 ff c0 4c 8d
RSP: 0018:ffffc90006bb7160 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000080000000
RDX: 00000000000aaba9 RSI: ffffffff8c291100 RDI: ffffffff8c2910c0
RBP: ffffffff89715701 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90006bb7258 R11: ffffffff81b10630 R12: dffffc0000000000
R13: ffffffff91936780 R14: ffffc90006bb7208 R15: 0000000000087157
 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
 save_stack+0x122/0x230 mm/page_owner.c:165
 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1397 [inline]
 __free_frozen_pages+0xc0d/0xd20 mm/page_alloc.c:2938
 __slab_free+0x274/0x2c0 mm/slub.c:5672
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4610 [inline]
 slab_alloc_node mm/slub.c:4939 [inline]
 __kmalloc_cache_noprof+0x2b6/0x660 mm/slub.c:5446
 _kmalloc_noprof include/linux/slab.h:969 [inline]
 _kzalloc_noprof include/linux/slab.h:1286 [inline]
 ref_tracker_alloc+0x15b/0x4b0 lib/ref_tracker.c:270
 __netns_tracker_alloc include/net/net_namespace.h:367 [inline]
 netns_tracker_alloc include/net/net_namespace.h:376 [inline]
 get_net_track+0x16e/0x230 include/net/net_namespace.h:393
 sk_net_refcnt_upgrade+0xb2/0x130 net/core/sock.c:2402
 rds_tcp_tune+0x44e/0x920 net/rds/tcp.c:529
 rds_tcp_conn_path_connect+0x2fa/0x920 net/rds/tcp_connect.c:137
 rds_connect_worker+0x1d8/0x290 net/rds/threads.c:176
 process_one_work kernel/workqueue.c:3314 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3397
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3478
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
task:kthreadd        state:R  running task     stack:26440 pid:2     tgid:2     ppid:0      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5504 [inline]
 __schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7552
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
 irqentry_exit+0x14f/0x8f0 kernel/entry/common.c:167
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:103 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:238 [inline]
RIP: 0010:unwind_next_frame+0x511/0x2550 arch/x86/kernel/unwind_orc.c:510
Code: b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 75 27 48 63 03 48 01 d8 48 8d 4b 04 48 39 e8 4c 0f 46 f9 48 8d 43 fc 4c 0f 47 e0 <4c> 0f 46 eb 4d 39 e7 76 a9 e9 7c fd ff ff 89 d9 80 e1 07 80 c1 03
RSP: 0018:ffffc90000077380 EFLAGS: 00000297
RAX: ffffffff904b0b94 RBX: ffffffff904b0b98 RCX: ffffffff904b0b9c
RDX: ffffffff904b0b98 RSI: ffffffff90c73a26 RDI: ffffffff8c2910c0
RBP: ffffffff818fefab R08: 0000000000000001 R09: 0000000000000000
R10: ffffc90000077478 R11: ffffffff81b10630 R12: ffffffff904b0b98
R13: ffffffff904b0b98 R14: ffffc90000077428 R15: ffffffff904b0b9c
 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
 save_stack+0x122/0x230 mm/page_owner.c:165
 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1397 [inline]
 __free_frozen_pages+0xc0d/0xd20 mm/page_alloc.c:2938
 __slab_free+0x274/0x2c0 mm/slub.c:5672
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_kmalloc+0x22/0xb0 mm/kasan/common.c:406
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __kmalloc_cache_noprof+0x318/0x660 mm/slub.c:5451
 _kmalloc_noprof include/linux/slab.h:969 [inline]
 _kzalloc_noprof include/linux/slab.h:1286 [inline]
 set_kthread_struct+0xbb/0x340 kernel/kthread.c:107
 copy_process+0x1796/0x42e0 kernel/fork.c:2215
 kernel_clone+0x2d7/0x940 kernel/fork.c:2745
 kernel_thread+0x13f/0x1b0 kernel/fork.c:2806
 create_kthread kernel/kthread.c:459 [inline]
 kthreadd+0x4ec/0x6e0 kernel/kthread.c:817
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
task:dhcpcd          state:R  running task     stack:24856 pid:5283  tgid:5283  ppid:1      task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5504 [inline]
 __schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7552
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
 irqentry_exit+0x14f/0x8f0 kernel/entry/common.c:167
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:81 [inline]
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:103 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:238 [inline]
RIP: 0010:unwind_next_frame+0x4e2/0x2550 arch/x86/kernel/unwind_orc.c:510
Code: e9 ee 01 00 00 49 89 d5 49 89 d7 4c 89 e0 4c 29 f8 48 89 c1 48 c1 f9 02 48 c1 e8 3f 48 01 c8 48 83 e0 fe 49 8d 1c 47 48 89 d8 <48> c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 75 27
RSP: 0018:ffffc900033df600 EFLAGS: 00000206
RAX: ffffffff90535710 RBX: ffffffff90535710 RCX: 0000000000000007
RDX: ffffffff905356e4 RSI: ffffffff90d3ab18 RDI: ffffffff8c2910c0
RBP: ffffffff823118a1 R08: 0000000000000010 R09: 0000000000000000
R10: ffffc900033df6f8 R11: ffffffff81b10630 R12: ffffffff90535720
R13: ffffffff90535700 R14: ffffc900033df6a8 R15: ffffffff90535704
 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
 save_stack+0x122/0x230 mm/page_owner.c:165
 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1397 [inline]
 __free_frozen_pages+0xc0d/0xd20 mm/page_alloc.c:2938
 __slab_free+0x274/0x2c0 mm/slub.c:5672
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4610 [inline]
 slab_alloc_node mm/slub.c:4939 [inline]
 __do_kmalloc_node mm/slub.c:5333 [inline]
 __kmalloc_noprof+0x312/0x750 mm/slub.c:5347
 _kmalloc_noprof include/linux/slab.h:973 [inline]
 tomoyo_realpath_from_path+0xef/0x640 security/tomoyo/realpath.c:251
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_number_perm+0x246/0x5f0 security/tomoyo/file.c:728
 security_file_ioctl+0xc3/0x2a0 security/security.c:2512
 __do_sys_ioctl fs/ioctl.c:591 [inline]
 __se_sys_ioctl+0x47/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fec75144378
RSP: 002b:00007ffe9e2115d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000558fb0298dc0 RCX: 00007fec75144378
RDX: 00007ffe9e2115e0 RSI: 0000000000008921 RDI: 000000000000000f
RBP: 00007ffe9e2115e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000558fb027df50
R13: 0000558fb0298dc0 R14: 0000558fb027df50 R15: 00007ffe9e211830
 </TASK>
rcu: rcu_preempt kthread starved for 10475 jiffies! g259029 f0x2 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:28120 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5504 [inline]
 __schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
 __schedule_loop kernel/sched/core.c:7307 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:7322
 schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2123
 rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2325
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 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:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 8848 Comm: kworker/R-bond1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: bond13 bond_alb_monitor
RIP: 0010:arch_test_and_set_bit arch/x86/include/asm/bitops.h:136 [inline]
RIP: 0010:test_and_set_bit include/asm-generic/bitops/instrumented-atomic.h:72 [inline]
RIP: 0010:__netif_schedule+0x6b/0x200 net/core/dev.c:3404
Code: 00 74 0a e8 27 be 4b f8 e9 84 01 00 00 48 8d bb 98 01 00 00 be 08 00 00 00 e8 51 15 b7 f8 31 f6 f0 48 0f ba ab 98 01 00 00 00 <40> 0f 93 c5 40 0f 92 c6 bf 02 00 00 00 e8 f3 c0 4b f8 40 84 ed 75
RSP: 0018:ffffc90000007cd0 EFLAGS: 00000047
RAX: 1ffff1100652be01 RBX: ffff88803295f000 RCX: ffffffff897a380f
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff88803295f198
RBP: 0000000000000000 R08: ffff88803295f19f R09: 1ffff1100652be33
R10: dffffc0000000000 R11: ffffed100652be34 R12: ffff888095f19000
R13: dffffc0000000000 R14: ffff88803295f208 R15: ffff88803295f340
FS:  0000000000000000(0000) GS:ffff88812527c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556b3db4e8 CR3: 00000000616dc000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 advance_sched+0xa8a/0xc80 net/sched/sch_taprio.c:993
 __run_hrtimer kernel/time/hrtimer.c:2032 [inline]
 __hrtimer_run_queues+0x3bc/0xa10 kernel/time/hrtimer.c:2096
 hrtimer_interrupt+0x448/0x910 kernel/time/hrtimer.c:2215
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline]
 __sysvec_apic_timer_interrupt+0x102/0x430 arch/x86/kernel/apic/apic.c:1068
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:179 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80 kernel/locking/spinlock.c:198
Code: f7 e8 9d ea f7 f5 f7 c3 00 02 00 00 74 05 e8 10 a7 23 f6 9c 58 a9 00 02 00 00 75 27 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> e4 01 e9 f5 65 8b 05 2d c4 8f 07 85 c0 74 18 5b 41 5e e9 91 48
RSP: 0018:ffffc9000504f8c8 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 0000000000000246 RCX: 0000000080000002
RDX: 0000000000000000 RSI: ffffffff8c291100 RDI: 0000000000000001
RBP: ffffffff8e95f601 R08: ffffffff903116f7 R09: 1ffffffff20622de
R10: dffffc0000000000 R11: fffffbfff20622df R12: ffffffff8e95f698
R13: 0000000000000246 R14: ffffffff8e95f5c0 R15: ffffffff8e95f5c0
 rcu_preempt_deferred_qs_irqrestore+0x7b7/0xb90 kernel/rcu/tree_plugin.h:-1
 __rcu_read_unlock+0x83/0xe0 kernel/rcu/tree_plugin.h:438
 rcu_read_unlock include/linux/rcupdate.h:873 [inline]
 bond_alb_monitor+0x11f2/0x17c0 drivers/net/bonding/bond_alb.c:1626
 process_one_work kernel/workqueue.c:3314 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3397
 rescuer_thread+0x7b6/0x10b0 kernel/workqueue.c:3621
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>