rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4953/2:b..l P6161/1:b..l P6217/3:b..l P6160/1:b..l P6230/1:b..l P300/1:b..l P1456/1:b..l P31/1:b..l
rcu: (detected by 0, t=10504 jiffies, g=16117, q=339 ncpus=2)
task:kworker/1:0 state:D stack:20848 pid:31 tgid:31 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events_power_efficient neigh_managed_work
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x16d9/0x5700 kernel/sched/core.c:7276
__schedule_loop kernel/sched/core.c:7353 [inline]
schedule_rtlock+0x30/0x70 kernel/sched/core.c:7432
rtlock_slowlock_locked+0x35c9/0x3c20 kernel/locking/rtmutex.c:1895
rtlock_slowlock kernel/locking/rtmutex.c:1922 [inline]
rtlock_lock kernel/locking/spinlock_rt.c:43 [inline]
__rt_spin_lock kernel/locking/spinlock_rt.c:49 [inline]
rt_spin_lock+0x165/0x400 kernel/locking/spinlock_rt.c:57
spin_lock_bh include/linux/spinlock_rt.h:90 [inline]
neigh_managed_work+0x4e/0x250 net/core/neighbour.c:1664
process_one_work kernel/workqueue.c:3396 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
kthread+0x38b/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:kworker/u8:14 state:R running task stack:22368 pid:1456 tgid:1456 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events_unbound flush_memcg_stats_dwork
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x16d9/0x5700 kernel/sched/core.c:7276
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7598
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x910 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:__css_process_update_tree kernel/cgroup/rstat.c:142 [inline]
RIP: 0010:css_process_update_tree kernel/cgroup/rstat.c:190 [inline]
RIP: 0010:css_rstat_updated_list kernel/cgroup/rstat.c:296 [inline]
RIP: 0010:css_rstat_flush+0x41f/0x1860 kernel/cgroup/rstat.c:427
Code: 0f 85 34 01 00 00 e8 30 98 07 00 4c 89 e3 48 8d ab 08 01 00 00 48 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 ef e8 c7 77 73 00 4c 8b 65 00 4d 85 e4 0f 84 cb 00 00
RSP: 0018:ffffc900067679a8 EFLAGS: 00000246
RAX: 1ffff110038d5209 RBX: ffff88801c6a8f40 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88801c6a9048 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000cecf25 R12: ffff8880b8645470
R13: ffff888125bd1000 R14: 0000607eda0b6f20 R15: ffffe8ffffc87f28
flush_memcg_stats_dwork+0x15/0x60 mm/memcontrol.c:798
process_one_work kernel/workqueue.c:3396 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
kthread+0x38b/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:kworker/u8:7 state:R running task stack:21184 pid:300 tgid:300 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events_unbound nsim_dev_trap_report_work
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x16d9/0x5700 kernel/sched/core.c:7276
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7598
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x910 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:do_csum lib/checksum.c:74 [inline]
RIP: 0010:ip_fast_csum+0x1cc/0x2b0 lib/checksum.c:99
Code: 63 bd fc 89 e8 83 e0 02 75 07 e8 cf 5e bd fc eb 24 e8 c8 5e bd fc 4c 89 f0 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 ba 00 00 00 <41> 0f b7 06 41 01 c7 49 83 c6 02 89 ee 83 e6 01 31 ff e8 ad 63 bd
RSP: 0018:ffffc900044bf9e0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888021b25dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000012 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 000000000000002e R12: dffffc0000000000
R13: 0000000000000000 R14: ffff88801b37a020 R15: 000000000000c731
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:767 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:801 [inline]
nsim_dev_trap_report_work+0x613/0xcb0 drivers/net/netdevsim/dev.c:847
process_one_work kernel/workqueue.c:3396 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
kthread+0x38b/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:syz.0.131 state:R running task stack:24056 pid:6230 tgid:6228 ppid:5585 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x16d9/0x5700 kernel/sched/core.c:7276
preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7455
preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
rt_mutex_wake_up_q kernel/locking/rtmutex.c:583 [inline]
rt_mutex_slowunlock+0x6d3/0xa30 kernel/locking/rtmutex.c:1483
rt_spin_unlock+0x10f/0x200 kernel/locking/spinlock_rt.c:84
__ia32_sys_rt_sigreturn+0x2b3/0x8c0 arch/x86/kernel/signal_64.c:263
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe5a907f4d9
RSP: 002b:00007fe5a7335b40 EFLAGS: 00000206 ORIG_RAX: 000000000000000f
RAX: ffffffffffffffda RBX: 00007fe5a9365fa8 RCX: 00007fe5a907f4d9
RDX: 00007fe5a7335b40 RSI: 00007fe5a7335c70 RDI: 0000000000000021
RBP: 00007fe5a9365fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fe5a9366038 R14: 00007ffdc96739a0 R15: 00007ffdc9673a88
task:udevd state:D stack:27352 pid:6160 tgid:6160 ppid:4953 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x16d9/0x5700 kernel/sched/core.c:7276
__schedule_loop kernel/sched/core.c:7353 [inline]
schedule_rtlock+0x30/0x70 kernel/sched/core.c:7432
rtlock_slowlock_locked+0x35c9/0x3c20 kernel/locking/rtmutex.c:1895
rtlock_slowlock kernel/locking/rtmutex.c:1922 [inline]
rtlock_lock kernel/locking/spinlock_rt.c:43 [inline]
__rt_spin_lock kernel/locking/spinlock_rt.c:49 [inline]
rt_spin_lock+0x165/0x400 kernel/locking/spinlock_rt.c:57
spin_lock include/linux/spinlock_rt.h:45 [inline]
__d_lookup+0x23e/0x790 fs/dcache.c:2622
lookup_fast+0x82/0x5d0 fs/namei.c:1878
walk_component fs/namei.c:2278 [inline]
link_path_walk+0x71f/0x1910 fs/namei.c:2656
path_openat+0x1ce/0x1d60 fs/namei.c:4996
do_file_open+0x23e/0x4a0 fs/namei.c:5029
do_sys_openat2+0x115/0x200 fs/open.c:1417
do_sys_open fs/open.c:1423 [inline]
__do_sys_openat fs/open.c:1439 [inline]
__se_sys_openat fs/open.c:1434 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1434
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe8073ca407
RSP: 002b:00007ffc21fbb070 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fe8072dc880 RCX: 00007fe8073ca407
RDX: 0000000000080000 RSI: 00007ffc21fbb1e0 RDI: ffffffffffffff9c
RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000055eb208ea7f5
R13: 000055eb208ea7f5 R14: 0000000000000001 R15: 000055eb20905140
task:syz.3.127 state:R running task stack:23240 pid:6217 tgid:6216 ppid:5584 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x16d9/0x5700 kernel/sched/core.c:7276
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7598
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x910 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:58 [inline]
RIP: 0010:unwind_next_frame+0x1a5b/0x2550 arch/x86/kernel/unwind_orc.c:694
Code: 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 56 72 ba 00 48 8b 03 4d 39 fc 0f 96 c1 4c 39 f8 0f 97 c2 20 ca <80> fa 01 0f 85 f4 00 00 00 49 8d 4f 08 4c 39 e1 0f 86 e7 00 00 00
RSP: 0018:ffffc90006dc6ac8 EFLAGS: 00000202
RAX: ffffc90006dc8000 RBX: ffffc90006dc6bd8 RCX: dffffc0000000001
RDX: ffffc90006dc6c01 RSI: dffffc0000000000 RDI: ffffc90006dc6bd0
RBP: 1ffffffff2082901 R08: ffffc90006dc6c50 R09: 0000000000000000
R10: ffffc90006dc6c18 R11: fffff52000db8d85 R12: ffffc90006dc0000
R13: ffffffff8177e1bf R14: ffffc90006dc6bc8 R15: ffffc90006dc6c60
__unwind_start+0x514/0x660 arch/x86/kernel/unwind_orc.c:787
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xe3/0x150 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
ref_tracker_free+0x121/0x820 lib/ref_tracker.c:306
netdev_tracker_free include/linux/netdevice.h:4548 [inline]
netdev_put include/linux/netdevice.h:4565 [inline]
neigh_destroy+0x376/0x5e0 net/core/neighbour.c:937
neigh_flush_dev net/core/neighbour.c:433 [inline]
__neigh_ifdown+0x1f9/0x8f0 net/core/neighbour.c:466
neigh_ifdown+0x1f/0x30 net/core/neighbour.c:489
ndisc_netdev_event+0xc8/0x4d0 net/ipv6/ndisc.c:1898
notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:85
call_netdevice_notifiers_extack net/core/dev.c:2313 [inline]
call_netdevice_notifiers net/core/dev.c:2327 [inline]
netif_close_many+0x463/0x660 net/core/dev.c:1829
unregister_netdevice_many_notify+0xb76/0x2130 net/core/dev.c:12487
rtnl_delete_link net/core/rtnetlink.c:3652 [inline]
rtnl_dellink+0x5be/0x810 net/core/rtnetlink.c:3694
rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7132
netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x7f5/0x990 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
sock_sendmsg_nosec+0x13a/0x180 net/socket.c:800
__sock_sendmsg net/socket.c:815 [inline]
sock_write_iter+0x2e4/0x3f0 net/socket.c:1266
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61e/0xbb0 fs/read_write.c:687
ksys_write+0x156/0x270 fs/read_write.c:739
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8dbcb7e159
RSP: 002b:00007f8dbadd6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8dbce05fa0 RCX: 00007f8dbcb7e159
RDX: 0000000000000024 RSI: 0000200000000000 RDI: 0000000000000008
RBP: 00007f8dbcc15024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8dbce06038 R14: 00007f8dbce05fa0 R15: 00007fffd2f29048
task:udevd state:R running task stack:26216 pid:6161 tgid:6161 ppid:4953 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x16d9/0x5700 kernel/sched/core.c:7276
preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7455
preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:211 [inline]
_raw_spin_unlock_irqrestore+0x76/0x80 kernel/locking/spinlock.c:221
debug_rcu_head_queue kernel/rcu/rcu.h:246 [inline]
__call_rcu_common kernel/rcu/tree.c:3166 [inline]
call_rcu+0x5b/0x8b0 kernel/rcu/tree.c:3301
dentry_kill+0x4d3/0x880 fs/dcache.c:845
finish_dput+0x1a/0x260 fs/dcache.c:1001
end_renaming fs/namei.c:4122 [inline]
filename_renameat2+0x61b/0x9b0 fs/namei.c:6328
__do_sys_rename fs/namei.c:6370 [inline]
__se_sys_rename+0x55/0x2c0 fs/namei.c:6366
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe80739dcc7
RSP: 002b:00007ffc21fbedd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 000055eb4642e070 RCX: 00007fe80739dcc7
RDX: 000055eb463f5010 RSI: 00007ffc21fbedf0 RDI: 00007ffc21fbf1f0
RBP: 000055eb4640de00 R08: 00000000000001e0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffc21fbedf0
R13: 00007ffc21fbf1f0 R14: 0000000000000000 R15: 000055eb46418eb0
task:udevd state:R running task stack:25304 pid:4953 tgid:4953 ppid:1 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x16d9/0x5700 kernel/sched/core.c:7276
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7598
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x910 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lockdep_rht_mutex_is_held+0x5/0x90 lib/rhashtable.c:50
Code: e8 d0 29 66 fc eb eb cc cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 <53> 48 89 fb e8 f2 57 fa fc 48 c7 c0 c0 f7 b1 8f 48 c1 e8 03 48 b9
RSP: 0018:ffffc9000451f6d0 EFLAGS: 00000202
RAX: ffffffff89691ee8 RBX: 0000000000000001 RCX: ffff888037610000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8881404d9d88
RBP: ffffc9000451f7d0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc9000451f760 R11: fffff520008a3eee R12: dffffc0000000000
R13: 1ffff920008a3ee8 R14: ffff8881404d9d88 R15: ffff88803a9f4800
__rhashtable_lookup include/linux/rhashtable.h:627 [inline]
rhashtable_lookup include/linux/rhashtable.h:672 [inline]
rhashtable_lookup_fast include/linux/rhashtable.h:710 [inline]
__netlink_lookup+0x1a4/0x8b0 net/netlink/af_netlink.c:499
netlink_lookup+0xdb/0x200 net/netlink/af_netlink.c:519
netlink_getsockbyportid net/netlink/af_netlink.c:1142 [inline]
netlink_unicast+0x161/0x990 net/netlink/af_netlink.c:1339
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
sock_sendmsg_nosec+0x13a/0x180 net/socket.c:800
__sock_sendmsg net/socket.c:815 [inline]
____sys_sendmsg+0x565/0x870 net/socket.c:2713
___sys_sendmsg+0x2a5/0x360 net/socket.c:2767
__sys_sendmsg net/socket.c:2799 [inline]
__do_sys_sendmsg net/socket.c:2804 [inline]
__se_sys_sendmsg net/socket.c:2802 [inline]
__x64_sys_sendmsg+0x1b7/0x290 net/socket.c:2802
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe8073ca407
RSP: 002b:00007ffc21fbf760 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fe8072dc880 RCX: 00007fe8073ca407
RDX: 0000000000000000 RSI: 00007ffc21fbf7c0 RDI: 0000000000000004
RBP: 000055eb46409fb0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00000000000000b1
R13: 000055eb463f59e0 R14: 0000000000000000 R15: 0000000000000000
task:syz.0.131 state:R running task stack:28696 pid:6234 tgid:6228 ppid:5585 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x16d9/0x5700 kernel/sched/core.c:7276
preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7455
preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
rt_mutex_wake_up_q kernel/locking/rtmutex.c:583 [inline]
rt_mutex_slowunlock+0x6d3/0xa30 kernel/locking/rtmutex.c:1483
rt_spin_unlock+0x10f/0x200 kernel/locking/spinlock_rt.c:84
spin_unlock include/linux/spinlock_rt.h:115 [inline]
class_spinlock_destructor include/linux/spinlock.h:612 [inline]
__posixtimer_deliver_signal kernel/time/posix-timers.c:329 [inline]
posixtimer_deliver_signal+0x3bc/0x540 kernel/time/posix-timers.c:348
dequeue_signal+0x244/0x370 kernel/signal.c:642
get_signal+0x533/0x12c0 kernel/signal.c:2919
arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
exit_to_user_mode_loop+0x10e/0x770 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:336 [inline]
do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe5a90de157
RSP: 002b:00007fe5a73150e8 EFLAGS: 00000246
RAX: 00000000000000ca RBX: 00007fe5a9366098 RCX: 00007fe5a90de159
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fe5a9366098
RBP: 00007fe5a9366090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe5a9366128 R14: 00007ffdc96739a0 R15: 00007ffdc9673a88
task:kworker/0:0 state:R running task stack:26608 pid:9 tgid:9 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: wg-crypt-wg1 wg_packet_tx_worker
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x16d9/0x5700 kernel/sched/core.c:7276
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7598
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x910 kernel/entry/common.c:167
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:679
RIP: 0010:validate_xmit_skb+0x3/0x14f0 net/core/dev.c:4073
Code: 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 <41> 56 41 55 41 54 53 48 83 ec 58 48 89 54 24 20 49 89 f7 49 89 fe
RSP: 0000:ffffc900000e7388 EFLAGS: 00000293
RAX: ffffffff89268589 RBX: ffff88801cade3c0 RCX: ffff88801cadddc0
RDX: ffffc900000e75e0 RSI: ffff888037ed0000 RDI: ffff88802b652780
RBP: ffffc900000e7650 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f63cd0 R12: 0000000000000001
R13: ffff88803ca74c00 R14: 1ffff1100395bc78 R15: ffff888037ed0000
__dev_queue_xmit+0xb05/0x3880 net/core/dev.c:4913
dev_queue_xmit include/linux/netdevice.h:3461 [inline]
neigh_hh_output include/net/neighbour.h:544 [inline]
neigh_output include/net/neighbour.h:558 [inline]
ip_finish_output2+0xc27/0x1100 net/ipv4/ip_output.c:236
NF_HOOK_COND include/linux/netfilter.h:314 [inline]
ip_output+0x29f/0x450 net/ipv4/ip_output.c:437
iptunnel_xmit+0x61b/0xd70 net/ipv4/ip_tunnel_core.c:97
udp_tunnel_xmit_skb+0x29b/0x3e0 net/ipv4/udp_tunnel_core.c:187
send4+0xa47/0xec0 drivers/net/wireguard/socket.c:85
wg_socket_send_skb_to_peer+0xe8/0x200 drivers/net/wireguard/socket.c:174
wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline]
wg_packet_tx_worker+0x1c8/0x7e0 drivers/net/wireguard/send.c:276
process_one_work kernel/workqueue.c:3396 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
kthread+0x38b/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
rcu: rcu_preempt kthread starved for 10765 jiffies! g16117 f0x0 RCU_GP_WAIT_FQS(5) ->state=R ->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:27688 pid:18 tgid:18 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x16d9/0x5700 kernel/sched/core.c:7276
__schedule_loop kernel/sched/core.c:7353 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7368
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2122
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2330
kthread+0x38b/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
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G L syzkaller #0 PREEMPT_{RT,(full)}
Tainted: [L]=SOFTLOCKUP
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: 1c 62 02 e9 93 d8 03 00 cc cc cc 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 d3 5b 13 00 fb f4 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90
RSP: 0018:ffffffff8de07ca0 EFLAGS: 00000242
RAX: 0000000000230c51 RBX: ffffffff819a7a5c RCX: 8000000000000001
RDX: 0000000000000001 RSI: ffffffff8d8ca62f RDI: ffffffff8bcc2280
RBP: ffffffff8de07d78 R08: ffff8880b8633e9b R09: 1ffff110170c67d3
R10: dffffc0000000000 R11: ffffed10170c67d4 R12: 0000000000000000
R13: 1ffffffff1bdedf0 R14: 1ffffffff1bc0f9c R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888125bd1000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3211cff8 CR3: 0000000036888000 CR4: 00000000003526f0
Call Trace:
arch_safe_halt arch/x86/kernel/process.c:767 [inline]
default_idle+0x9/0x20 arch/x86/kernel/process.c:768
default_idle_call+0x72/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:199 [inline]
do_idle+0x1cc/0x540 kernel/sched/idle.c:355
cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:454
rest_init+0x378/0x3a0 init/main.c:727
start_kernel+0x392/0x3e0 init/main.c:1185
x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x137/0x1b0 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x157