rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5620/1:b..l P24/1:b..l P17710/1:b..l P5616/1:b..l P5289/1:b..l
rcu: (detected by 1, t=10504 jiffies, g=221529, q=1387 ncpus=2)
task:dhcpcd state:R running task stack:22536 pid:5289 tgid:5289 ppid:5288 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x125c/0x6730 kernel/sched/core.c:7234
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7556
irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:468 [inline]
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x205/0xa00 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:__lt_find include/linux/rbtree_latch.h:109 [inline]
RIP: 0010:latch_tree_find include/linux/rbtree_latch.h:210 [inline]
RIP: 0010:bpf_ksym_find+0x26/0x1c0 kernel/bpf/core.c:716
Code: 90 90 90 90 41 57 41 56 41 55 49 bd 00 00 00 00 00 fc ff df 41 54 49 89 fc 55 53 48 83 ec 08 e8 10 80 ef ff 8b 05 4a c6 66 0c <89> c3 41 89 c6 89 44 24 04 83 e3 01 41 83 e6 01 48 8d 3c dd 70 f4
RSP: 0018:ffffc900034b7248 EFLAGS: 00000293
RAX: 0000000000000004 RBX: 0000000000000001 RCX: ffffffff821af3a2
RDX: ffff888020ff3e00 RSI: ffffffff821a2df0 RDI: 00007f2a6482b636
RBP: 00007f2a6482b636 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 00007f2a6482b636
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888020ff3e00
is_bpf_text_address+0x58/0x1a0 kernel/bpf/core.c:749
kernel_text_address kernel/extable.c:125 [inline]
kernel_text_address+0x8d/0x100 kernel/extable.c:94
__kernel_text_address+0xd/0x30 kernel/extable.c:79
unwind_get_return_address+0x59/0xa0 arch/x86/kernel/unwind_orc.c:385
arch_stack_walk+0xa6/0xf0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_save_track+0x14/0x30 mm/kasan/common.c:78
kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:253 [inline]
__kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2677 [inline]
slab_free mm/slub.c:6377 [inline]
kfree+0x22b/0x6c0 mm/slub.c:6692
free_slab_obj_exts mm/slub.c:2237 [inline]
unaccount_slab mm/slub.c:3352 [inline]
__free_slab+0x13d/0x220 mm/slub.c:3439
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:4584 [inline]
slab_alloc_node mm/slub.c:4917 [inline]
kmem_cache_alloc_noprof+0x26b/0x6a0 mm/slub.c:4931
anon_vma_alloc mm/rmap.c:94 [inline]
anon_vma_fork+0x8d/0x6b0 mm/rmap.c:391
dup_mmap+0x143e/0x21b0 mm/mmap.c:1803
dup_mm kernel/fork.c:1543 [inline]
copy_mm kernel/fork.c:1595 [inline]
copy_process+0x4588/0x8030 kernel/fork.c:2289
kernel_clone+0x176/0x9d0 kernel/fork.c:2748
__do_sys_clone+0xd9/0x120 kernel/fork.c:2889
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x115/0x840 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2a6482b636
RSP: 002b:00007fff395ad2d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fff395ad2d8 RCX: 00007f2a6482b636
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007fff395cd820 R08: 0000000000000000 R09: 0000000000000001
R10: 00007f2a64757a50 R11: 0000000000000246 R12: 00007fff395ad410
R13: 0000000000000000 R14: 0000000000000000 R15: 0000560f0104aac0
task:udevd state:R running task stack:26472 pid:5616 tgid:5616 ppid:4994 task_flags:0x40014c flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x125c/0x6730 kernel/sched/core.c:7234
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7556
irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:468 [inline]
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x205/0xa00 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_release+0x19e/0x310 kernel/locking/lockdep.c:5893
Code: ff 65 0f c1 05 63 d4 7e 12 83 f8 01 0f 85 27 01 00 00 9c 58 f6 c4 02 0f 85 12 01 00 00 41 f7 c6 00 02 00 00 0f 85 c8 00 00 00 <48> 8b 44 24 10 65 48 2b 05 6d 8d 7e 12 0f 85 4d 01 00 00 48 83 c4
RSP: 0018:ffffc90003d474a8 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffffffff8ebe8000 RCX: ffffc90003d474b4
RDX: 0000000000000001 RSI: ffffffff8e183111 RDI: ffffffff8c400a80
RBP: ffffffff81b806be R08: 0000000000000001 R09: 0000000000000007
R10: 0000000000000200 R11: 000000000001659d R12: ffff8880374cdd00
R13: ffffc90003d47560 R14: 0000000000000202 R15: 0000000000000002
rcu_lock_release include/linux/rcupdate.h:310 [inline]
rcu_read_unlock include/linux/rcupdate.h:871 [inline]
class_rcu_destructor include/linux/rcupdate.h:1183 [inline]
unwind_next_frame+0x3c3/0x2090 arch/x86/kernel/unwind_orc.c:495
arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_record_aux_stack+0xa7/0xc0 mm/kasan/generic.c:556
__call_rcu_common.constprop.0+0xa5/0x9b0 kernel/rcu/tree.c:3159
slab_free_hook mm/slub.c:2641 [inline]
slab_free mm/slub.c:6377 [inline]
kmem_cache_free+0x43e/0x6b0 mm/slub.c:6504
anon_vma_free mm/rmap.c:137 [inline]
__put_anon_vma+0x114/0x3a0 mm/rmap.c:2917
put_anon_vma mm/internal.h:215 [inline]
unlink_anon_vmas+0x5f3/0x8e0 mm/rmap.c:536
free_pgtables+0x2e7/0xd80 mm/memory.c:414
exit_mmap+0x44c/0xa00 mm/mmap.c:1312
__mmput+0x12a/0x410 kernel/fork.c:1187
mmput+0x67/0x80 kernel/fork.c:1210
exit_mm kernel/exit.c:615 [inline]
do_exit+0x8b1/0x2ae0 kernel/exit.c:997
do_group_exit+0xd5/0x2a0 kernel/exit.c:1152
__do_sys_exit_group kernel/exit.c:1163 [inline]
__se_sys_exit_group kernel/exit.c:1161 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1161
x64_sys_call+0x102c/0x1530 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x115/0x840 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7347af16c5
RSP: 002b:00007ffc54690668 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000555f02dfcd60 RCX: 00007f7347af16c5
RDX: 00000000000000e7 RSI: fffffffffffffe68 RDI: 0000000000000000
RBP: 0000555f02deb910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc546906b0 R14: 0000000000000000 R15: 0000000000000000
task:syz.1.1671 state:R running task stack:25112 pid:17710 tgid:17707 ppid:5625 task_flags:0x40054c flags:0x00080003
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x125c/0x6730 kernel/sched/core.c:7234
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7556
irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:468 [inline]
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x205/0xa00 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:23 [inline]
RIP: 0010:lock_acquire+0x4a/0x370 kernel/locking/lockdep.c:5831
Code: 65 4c 8b 3d 60 94 7e 12 4c 89 7c 24 30 4d 89 cf 66 90 65 8b 05 7b 94 7e 12 83 f8 07 0f 87 da 00 00 00 48 0f a3 05 06 4e 3d 0f <0f> 82 ac 02 00 00 8b 35 ae 81 3d 0f 85 f6 0f 85 c7 00 00 00 48 8b
RSP: 0018:ffffc9000fb6ed50 EFLAGS: 00000297
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8ebe8000
RBP: ffffffff8ebe8000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000200 R11: 000000000001790b R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
rcu_read_lock include/linux/rcupdate.h:840 [inline]
class_rcu_constructor include/linux/rcupdate.h:1183 [inline]
unwind_next_frame+0xd1/0x2090 arch/x86/kernel/unwind_orc.c:495
arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_save_track+0x14/0x30 mm/kasan/common.c:78
kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:253 [inline]
__kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2677 [inline]
slab_free mm/slub.c:6377 [inline]
kfree+0x22b/0x6c0 mm/slub.c:6692
free_slab_obj_exts mm/slub.c:2237 [inline]
unaccount_slab mm/slub.c:3352 [inline]
__free_slab+0x13d/0x220 mm/slub.c:3439
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_kmalloc+0x8a/0xb0 mm/kasan/common.c:406
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5334 [inline]
__kmalloc_node_noprof+0x339/0x830 mm/slub.c:5346
_kmalloc_node_noprof include/linux/slab.h:1197 [inline]
__vmalloc_area_node mm/vmalloc.c:3871 [inline]
__vmalloc_node_range_noprof+0x409/0x1630 mm/vmalloc.c:4082
__vmalloc_node_noprof+0xad/0xf0 mm/vmalloc.c:4143
__snd_dma_alloc_pages+0xd2/0x150 sound/core/memalloc.c:45
snd_dma_alloc_dir_pages+0x151/0x240 sound/core/memalloc.c:79
do_alloc_pages+0xe5/0x1e0 sound/core/pcm_memory.c:69
snd_pcm_lib_malloc_pages+0x4bd/0x9b0 sound/core/pcm_memory.c:455
snd_pcm_hw_params+0x1738/0x1cd0 sound/core/pcm_native.c:828
snd_pcm_kernel_ioctl+0x104/0x280 sound/core/pcm_native.c:3548
snd_pcm_oss_change_params_locked+0x1973/0x39f0 sound/core/oss/pcm_oss.c:967
snd_pcm_oss_change_params sound/core/oss/pcm_oss.c:1108 [inline]
snd_pcm_oss_make_ready+0xeb/0x1b0 sound/core/oss/pcm_oss.c:1167
snd_pcm_oss_sync+0x1de/0x840 sound/core/oss/pcm_oss.c:1739
snd_pcm_oss_release+0x238/0x300 sound/core/oss/pcm_oss.c:2590
__fput+0x3ff/0xb50 fs/file_table.c:512
task_work_run+0x150/0x240 kernel/task_work.c:233
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0x951/0x2ae0 kernel/exit.c:1009
do_group_exit+0xd5/0x2a0 kernel/exit.c:1152
get_signal+0x1ec7/0x21e0 kernel/signal.c:3046
arch_do_signal_or_restart+0x91/0x7a0 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
exit_to_user_mode_loop+0x139/0x6f0 kernel/entry/common.c:101
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
do_syscall_64+0x652/0x840 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1344f9e019
RSP: 002b:00007f1345f33028 EFLAGS: 00000246 ORIG_RAX: 0000000000000007
RAX: fffffffffffffdfc RBX: 00007f1345226090 RCX: 00007f1344f9e019
RDX: 00000000000002e2 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 00007f134503500c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1345226128 R14: 00007f1345226090 R15: 00007ffd14104928
task:kworker/1:0 state:R running task stack:25984 pid:24 tgid:24 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events_power_efficient gc_worker
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x125c/0x6730 kernel/sched/core.c:7234
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7556
irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:468 [inline]
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x205/0xa00 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:write_comp_data+0x40/0x90 kernel/kcov.c:246
Code: 5a 12 a9 00 01 ff 00 74 1b f6 c4 01 74 07 a9 00 00 ff 00 74 05 e9 00 8c b2 09 8b 87 24 17 00 00 85 c0 74 f1 8b 87 f8 16 00 00 <83> f8 03 75 e6 48 8b 87 00 17 00 00 8b bf fc 16 00 00 48 8b 30 48
RSP: 0018:ffffc900001e7b40 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff89d9a888
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88801f2a5d00
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000040000 R15: 0000000000005b43
nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:343 [inline]
gc_worker+0x2d8/0x1a10 net/netfilter/nf_conntrack_core.c:1534
process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
process_scheduled_works kernel/workqueue.c:3405 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
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:udevd state:R running task stack:26648 pid:5620 tgid:5620 ppid:4994 task_flags:0x40014c flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x125c/0x6730 kernel/sched/core.c:7234
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7556
irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:468 [inline]
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x205/0xa00 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:55 [inline]
RIP: 0010:stack_access_ok+0x53/0x1d0 arch/x86/kernel/unwind_orc.c:409
Code: c0 74 08 3c 03 0f 8e 3f 01 00 00 8b 13 85 d2 74 65 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 08 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 24 01 00 00 48 8d 7b 10 4c 8b 6b 08 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc90003d77510 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc90003d775b0 RCX: ffffffff91d2c576
RDX: 1ffff920007aeeb7 RSI: ffffc90003d77970 RDI: ffffc90003d775b8
RBP: ffffc90003d77970 R08: ffffffff91d2c57a R09: 0000000000000007
R10: 0000000000000200 R11: 0000000000016d47 R12: 0000000000000008
R13: ffffc90003d775b0 R14: ffffc90003d77978 R15: ffffc90003d775e4
deref_stack_reg arch/x86/kernel/unwind_orc.c:419 [inline]
unwind_next_frame+0xcf5/0x2090 arch/x86/kernel/unwind_orc.c:614
arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_record_aux_stack+0xa7/0xc0 mm/kasan/generic.c:556
slab_free_hook mm/slub.c:2638 [inline]
slab_free mm/slub.c:6377 [inline]
kmem_cache_free+0x427/0x6b0 mm/slub.c:6504
anon_vma_free mm/rmap.c:137 [inline]
__put_anon_vma+0x114/0x3a0 mm/rmap.c:2917
put_anon_vma mm/internal.h:215 [inline]
unlink_anon_vmas+0x5f3/0x8e0 mm/rmap.c:536
free_pgtables+0x2e7/0xd80 mm/memory.c:414
exit_mmap+0x44c/0xa00 mm/mmap.c:1312
__mmput+0x12a/0x410 kernel/fork.c:1187
mmput+0x67/0x80 kernel/fork.c:1210
exit_mm kernel/exit.c:615 [inline]
do_exit+0x8b1/0x2ae0 kernel/exit.c:997
do_group_exit+0xd5/0x2a0 kernel/exit.c:1152
__do_sys_exit_group kernel/exit.c:1163 [inline]
__se_sys_exit_group kernel/exit.c:1161 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1161
x64_sys_call+0x102c/0x1530 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x115/0x840 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7347af16c5
RSP: 002b:00007ffc54690668 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000555f02e0b7d0 RCX: 00007f7347af16c5
RDX: 00000000000000e7 RSI: fffffffffffffe68 RDI: 0000000000000000
RBP: 0000555f02deb910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc546906b0 R14: 0000000000000000 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 10703 jiffies! g221529 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:27432 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x125c/0x6730 kernel/sched/core.c:7234
__schedule_loop kernel/sched/core.c:7311 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7326
schedule_timeout+0x127/0x280 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1a9/0x900 kernel/rcu/tree.c:2123
rcu_gp_kthread+0x179/0x230 kernel/rcu/tree.c:2325
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
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:64
Code: f6 8d 02 c3 cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d e3 9d 12 00 fb f4 3c 4a 03 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
RSP: 0018:ffffc90000197e00 EFLAGS: 00000242
RAX: 00000000006415b9 RBX: ffff88801ee88000 RCX: ffffffff8bb902d5
RDX: 0000000000000000 RSI: ffffffff8e1a8f82 RDI: ffffffff8c400a80
RBP: ffffed1003dd1000 R08: 0000000000000001 R09: ffffed10170a678d
R10: ffff8880b8533c6b R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 1ffff92000032fc4 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888123ee1000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbd9188e164 CR3: 00000000133f4000 CR4: 00000000003526f0
Call Trace:
arch_safe_halt arch/x86/include/asm/paravirt.h:62 [inline]
default_idle+0x9/0x10 arch/x86/kernel/process.c:768
default_idle_call+0x6c/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:199 [inline]
do_idle+0x3a7/0x5b0 kernel/sched/idle.c:355
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:454
start_secondary+0x21d/0x2d0 arch/x86/kernel/smpboot.c:312
common_startup_64+0x13e/0x158