worker_thread+0xa60/0x1260 kernel/workqueue.c:2446
kthread+0x26d/0x300 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
watchdog: BUG: soft lockup - CPU#1 stuck for 246s! [kworker/u4:1:10]
Modules linked in:
CPU: 1 PID: 10 Comm: kworker/u4:1 Tainted: G W 6.1.129-syzkaller-00054-g3e6e324f5b47 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:453 [inline]
RIP: 0010:smp_call_function_many_cond+0x84f/0x930 kernel/smp.c:998
Code: 3e 44 89 fe 83 e6 01 31 ff e8 ad 9b 09 00 41 83 e7 01 49 bf 00 00 00 00 00 fc ff df 75 0a e8 e8 97 09 00 e9 2f ff ff ff f3 90 <42> 0f b6 04 3b 84 c0 75 14 41 f7 06 01 00 00 00 0f 84 12 ff ff ff
RSP: 0018:ffffc900000a7840 EFLAGS: 00000293
RAX: ffffffff816bffca RBX: 1ffff1103edc7a99 RCX: ffff888100393cc0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900000a7958 R08: ffffffff816bff93 R09: ffffed103ede71fb
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000800000000 R14: ffff8881f6e3d4c8 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8766667d58 CR3: 000000000700f000 CR4: 00000000003506a0
DR0: 00000000000000fd DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
on_each_cpu_cond_mask+0x40/0x80 kernel/smp.c:1166
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1334 [inline]
text_poke_bp_batch+0x1e9/0x730 arch/x86/kernel/alternative.c:1534
text_poke_flush arch/x86/kernel/alternative.c:1725 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1732
arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:146
__jump_label_update+0x36a/0x380 kernel/jump_label.c:451
jump_label_update+0x3af/0x450 kernel/jump_label.c:797
static_key_enable_cpuslocked+0x12f/0x250 kernel/jump_label.c:173
static_key_enable+0x1a/0x30 kernel/jump_label.c:186
toggle_allocation_gate+0xbf/0x450 mm/kfence/core.c:805
process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299
worker_thread+0xa60/0x1260 kernel/workqueue.c:2446
kthread+0x26d/0x300 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 322 Comm: kworker/u4:4 Tainted: G W 6.1.129-syzkaller-00054-g3e6e324f5b47 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: netns cleanup_net
RIP: 0010:native_halt arch/x86/include/asm/irqflags.h:57 [inline]
RIP: 0010:halt arch/x86/include/asm/irqflags.h:98 [inline]
RIP: 0010:kvm_wait+0x117/0x180 arch/x86/kernel/kvm.c:1058
Code: 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b 74 24 1c 75 53 41 0f b6 45 00 44 38 f0 0f 85 63 ff ff ff 66 90 0f 00 2d 4a e0 50 04 f4 54 ff ff ff fa 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b
RSP: 0018:ffffc9000dcb7240 EFLAGS: 00000046
RAX: 0000000000000003 RBX: 1ffff92001b96e4c RCX: ffffffff85231f8c
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8881f6e279c0
RBP: ffffc9000dcb72f0 R08: dffffc0000000000 R09: ffffed103edc4f39
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8881f6e279c0 R14: 0000000000000003 R15: 1ffff92001b96e50
FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f778a077f98 CR3: 0000000143806000 CR4: 00000000003506b0
DR0: 00000000000000fd DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
pv_wait arch/x86/include/asm/paravirt.h:603 [inline]
pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
__pv_queued_spin_lock_slowpath+0x6de/0xda0 kernel/locking/qspinlock.c:511
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock include/linux/spinlock.h:187 [inline]
__raw_spin_lock include/linux/spinlock_api_smp.h:134 [inline]
_raw_spin_lock+0x139/0x1b0 kernel/locking/spinlock.c:154
krc_this_cpu_lock kernel/rcu/tree.c:3035 [inline]
add_ptr_to_bulk_krc_lock kernel/rcu/tree.c:3355 [inline]
kvfree_call_rcu+0x12d/0x800 kernel/rcu/tree.c:3446
trie_delete_elem+0x5a6/0x760 kernel/bpf/lpm_trie.c:545
bpf_prog_5b2637d888f48567+0x3a/0x3e
bpf_dispatcher_nop_func include/linux/bpf.h:987 [inline]
__bpf_prog_run include/linux/filter.h:596 [inline]
bpf_prog_run include/linux/filter.h:610 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2282 [inline]
bpf_trace_run3+0x233/0x2e0 kernel/trace/bpf_trace.c:2322
__bpf_trace_timer_start+0x2b/0x40 include/trace/events/timer.h:53
trace_timer_start include/trace/events/timer.h:53 [inline]
enqueue_timer+0x303/0x480 kernel/time/timer.c:615
internal_add_timer kernel/time/timer.c:640 [inline]
__mod_timer+0x8d3/0xcf0 kernel/time/timer.c:1121
add_timer+0x68/0x80 kernel/time/timer.c:1218
__queue_delayed_work+0x16d/0x1f0 kernel/workqueue.c:1686
mod_delayed_work_on+0xee/0x190 kernel/workqueue.c:1749
mod_delayed_work include/linux/workqueue.h:540 [inline]
schedule_delayed_monitor_work kernel/rcu/tree.c:3213 [inline]
kvfree_call_rcu+0x5e3/0x800 kernel/rcu/tree.c:3472
fib_notifier_ops_unregister+0xe7/0x100 net/core/fib_notifier.c:167
fib4_notifier_exit+0x3b/0x40 net/ipv4/fib_notifier.c:71
ip_fib_net_exit+0x370/0x3b0 net/ipv4/fib_frontend.c:1597
fib_net_exit_batch+0x47/0x90 net/ipv4/fib_frontend.c:1640
ops_exit_list net/core/net_namespace.c:177 [inline]
cleanup_net+0x6c9/0xbf0 net/core/net_namespace.c:604
process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299
worker_thread+0xa60/0x1260 kernel/workqueue.c:2446
kthread+0x26d/0x300 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295