RBP: 00007f3995008bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3995216038 R14: 00007f3995215fa0 R15: 00007fff82cd6308
watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [syz.0.3203:10344]
Modules linked in:
CPU: 0 PID: 10344 Comm: syz.0.3203 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:csd_lock_wait kernel/smp.c:453 [inline]
RIP: 0010:smp_call_function_many_cond+0x88d/0x980 kernel/smp.c:998
Code: 41 8b 1f 89 de 83 e6 01 31 ff e8 be 74 09 00 83 e3 01 48 bb 00 00 00 00 00 fc ff df 75 0a e8 8a 70 09 00 e9 38 ff ff ff f3 90 <41> 0f b6 44 1d 00 84 c0 75 14 41 f7 07 01 00 00 00 0f 84 1a ff ff
RSP: 0018:ffffc900059df6a0 EFLAGS: 00000293
RAX: ffffffff8167d959 RBX: dffffc0000000000 RCX: ffff88811a01a880
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900059df7d8 R08: ffffc900059df627 R09: 1ffff92000b3bec4
R10: 0000000000000000 R11: fffff52000b3bec5 R12: 1ffff1103ee07218
R13: 1ffff1103ee278a5 R14: 0000000000000001 R15: ffff8881f713c528
FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000020b00000000 CR3: 0000000006e0f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
on_each_cpu_cond_mask+0x43/0x80 kernel/smp.c:1165
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1574 [inline]
text_poke_bp_batch+0x1cf/0x600 arch/x86/kernel/alternative.c:1774
text_poke_flush arch/x86/kernel/alternative.c:1965 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1972
arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:146
__jump_label_update+0x37c/0x3a0 kernel/jump_label.c:451
jump_label_update+0x39b/0x450 kernel/jump_label.c:797
static_key_disable_cpuslocked+0xc9/0x1a0 kernel/jump_label.c:203
static_key_disable+0x1a/0x30 kernel/jump_label.c:211
tracepoint_remove_func kernel/tracepoint.c:417 [inline]
tracepoint_probe_unregister+0x641/0x8e0 kernel/tracepoint.c:551
bpf_probe_unregister+0x61/0x70 kernel/trace/bpf_trace.c:2359
bpf_raw_tp_link_release+0x63/0x90 kernel/bpf/syscall.c:3170
bpf_link_free+0x13a/0x3a0 kernel/bpf/syscall.c:2739
bpf_link_put kernel/bpf/syscall.c:2765 [inline]
bpf_link_release+0x15f/0x170 kernel/bpf/syscall.c:2774
__fput+0x1fc/0x8f0 fs/file_table.c:320
____fput+0x15/0x20 fs/file_table.c:348
task_work_run+0x1e1/0x250 kernel/task_work.c:203
exit_task_work include/linux/task_work.h:39 [inline]
do_exit+0xa35/0x2660 kernel/exit.c:886
__do_sys_exit kernel/exit.c:995 [inline]
__se_sys_exit kernel/exit.c:993 [inline]
__x64_sys_exit+0x40/0x40 kernel/exit.c:993
x64_sys_call+0x67/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:61
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3994f9acb9
Code: Unable to access opcode bytes at 0x7f3994f9ac8f.
RSP: 002b:00007f3995df6fd8 EFLAGS: 00000246 ORIG_RAX: 000000000000003c
RAX: ffffffffffffffda RBX: 00007f3995215fa0 RCX: 00007f3994f9acb9
RDX: 00007f3995df79c8 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f3995008bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3995216038 R14: 00007f3995215fa0 R15: 00007fff82cd6308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 914 Comm: kworker/1:5 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: events kfree_rcu_monitor
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+0xdf/0x150 arch/x86/kernel/kvm.c:1058
Code: 43 c6 44 37 04 f8 75 24 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 48 0f b6 07 40 38 f0 75 93 66 90 0f 00 2d 42 14 13 04 f4 87 fa 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 3f 0f b6 07
RSP: 0018:ffffc9000f5d7520 EFLAGS: 00000046
RAX: 0000000000000003 RBX: ffff8881f7127a80 RCX: ffffffff84ffa742
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8881f7127a80
RBP: ffffc9000f5d75b0 R08: ffff8881f7127a80 R09: 1ffff1103ee24f50
R10: dffffc0000000000 R11: ffffed103ee24f51 R12: 1ffff1103ee20001
R13: ffff8881f7138cd4 R14: dffffc0000000000 R15: 1ffff92001ebaea4
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000964000 CR3: 0000000114238000 CR4: 00000000003506a0
DR0: 0000200000000300 DR1: 0000200000000300 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+0x690/0xc40 kernel/locking/qspinlock.c:511
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51
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+0xe4/0xf0 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+0x107/0x7c0 kernel/rcu/tree.c:3446
trie_delete_elem+0x572/0x720 kernel/bpf/lpm_trie.c:545
bpf_prog_5186c38a4019a4cb+0x42/0x46
bpf_dispatcher_nop_func include/linux/bpf.h:987 [inline]
__bpf_prog_run include/linux/filter.h:603 [inline]
bpf_prog_run include/linux/filter.h:610 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2283 [inline]
bpf_trace_run3+0x123/0x290 kernel/trace/bpf_trace.c:2323
__bpf_trace_timer_start+0x2b/0x40 include/trace/events/timer.h:53
__traceiter_timer_start+0x8c/0xe0 include/trace/events/timer.h:53
trace_timer_start include/trace/events/timer.h:53 [inline]
enqueue_timer+0x337/0x480 kernel/time/timer.c:615
internal_add_timer kernel/time/timer.c:640 [inline]
__mod_timer+0x84c/0xc00 kernel/time/timer.c:1137
add_timer+0x68/0x80 kernel/time/timer.c:1250
__queue_delayed_work+0x173/0x200 kernel/workqueue.c:1686
queue_delayed_work_on+0xe7/0x160 kernel/workqueue.c:1711
queue_delayed_work include/linux/workqueue.h:525 [inline]
schedule_delayed_monitor_work kernel/rcu/tree.c:3216 [inline]
kfree_rcu_monitor+0x6fe/0x7f0 kernel/rcu/tree.c:3275
process_one_work+0x71f/0xc40 kernel/workqueue.c:2302
worker_thread+0xa29/0x11e0 kernel/workqueue.c:2449
kthread+0x281/0x320 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295