watchdog: BUG: soft lockup - CPU#1 stuck for 144s! [syz.5.10404:31775]
Modules linked in:
CPU: 1 PID: 31775 Comm: syz.5.10404 Tainted: G        W          6.1.145-syzkaller-00015-g87b9d836c3d8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:csd_lock_wait kernel/smp.c:453 [inline]
RIP: 0010:smp_call_function_many_cond+0x878/0x960 kernel/smp.c:998
Code: e6 01 31 ff e8 39 66 09 00 83 e3 01 48 bb 00 00 00 00 00 fc ff df 75 0a e8 05 62 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 ff e8 e2 61 09 00
RSP: 0018:ffffc90001a477c0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff88815bd50000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90001a478f8 R08: dffffc0000000000 R09: ffffed103ee27213
R10: 0000000000000000 R11: ffffffff81342170 R12: 1ffff1103ee27210
R13: 1ffff1103ee07ab9 R14: 0000000000000000 R15: ffff8881f703d5c8
FS:  0000555581cb9500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32f0eff8 CR3: 000000011e7aa000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 on_each_cpu_cond_mask+0x43/0x80 kernel/smp.c:1166
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:1574 [inline]
 text_poke_bp_batch+0x1cc/0x580 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+0x624/0x8b0 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/0x390 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+0x1db/0x240 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3abd78ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff85bbfaf8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f3abd9b7da0 RCX: 00007f3abd78ebe9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f3abd9b7da0 R08: 0000000000013ca0 R09: 0000001885bbfdef
R10: 00000000005ea16c R11: 0000000000000246 R12: 0000000000196b47
R13: 00007f3abd9b6180 R14: ffffffffffffffff R15: 00007fff85bbfc10
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 31780 Comm: syz.7.10415 Tainted: G        W          6.1.145-syzkaller-00015-g87b9d836c3d8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
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+0xcc/0x140 arch/x86/kernel/kvm.c:1058
Code: 20 f6 44 24 21 02 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 a6 66 90 0f 00 2d d5 ab 13 04 f4 <eb> 9a fa 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 3f 0f b6 07
RSP: 0018:ffffc90001a8f1e0 EFLAGS: 00000046
RAX: 0000000000000003 RBX: ffff88810b213140 RCX: ffffffff84f37c82
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff88810b213140
RBP: ffffc90001a8f270 R08: dffffc0000000000 R09: ffffed1021642629
R10: ffffed1021642629 R11: 1ffff11021642628 R12: 1ffff1103ee00001
R13: ffff8881f7038cb4 R14: dffffc0000000000 R15: 1ffff92000351e3c
FS:  000055556f380500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2c33a5 CR3: 000000013fb72000 CR4: 00000000003506b0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 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_irqsave include/linux/spinlock_api_smp.h:111 [inline]
 _raw_spin_lock_irqsave+0x108/0x110 kernel/locking/spinlock.c:162
 __stack_map_get+0xec/0x3c0 kernel/bpf/queue_stack_maps.c:144
 stack_map_peek_elem+0x1f/0x30 kernel/bpf/queue_stack_maps.c:177
 bpf_prog_00798911c748094f+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:2283 [inline]
 bpf_trace_run2+0x1a7/0x250 kernel/trace/bpf_trace.c:2322
 __bpf_trace_contention_end+0xb/0x10 include/trace/events/lock.h:122
 trace_contention_end include/trace/events/lock.h:122 [inline]
 __pv_queued_spin_lock_slowpath+0xbff/0xc40 kernel/locking/qspinlock.c:560
 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_irqsave include/linux/spinlock_api_smp.h:111 [inline]
 _raw_spin_lock_irqsave+0x108/0x110 kernel/locking/spinlock.c:162
 __stack_map_get+0xec/0x3c0 kernel/bpf/queue_stack_maps.c:144
 stack_map_peek_elem+0x1f/0x30 kernel/bpf/queue_stack_maps.c:177
 bpf_prog_00798911c748094f+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:2283 [inline]
 bpf_trace_run3+0x1c6/0x270 kernel/trace/bpf_trace.c:2323
 __bpf_trace_hrtimer_init+0x2b/0x40 include/trace/events/timer.h:173
 trace_hrtimer_init include/trace/events/timer.h:173 [inline]
 debug_init kernel/time/hrtimer.c:460 [inline]
 hrtimer_init_sleeper+0x320/0x370 kernel/time/hrtimer.c:2015
 hrtimer_init_sleeper_on_stack include/linux/hrtimer.h:400 [inline]
 futex_setup_timer+0x4a/0xc0 kernel/futex/core.c:142
 futex_wait+0x135/0x750 kernel/futex/waitwake.c:652
 do_futex+0x2dc/0x420 kernel/futex/syscalls.c:108
 __do_sys_futex kernel/futex/syscalls.c:185 [inline]
 __se_sys_futex+0x273/0x2e0 kernel/futex/syscalls.c:166
 __x64_sys_futex+0xe5/0x100 kernel/futex/syscalls.c:166
 x64_sys_call+0x7ec/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:203
 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: 0033:0x7f9eb458ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe4bd409c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000196927 RCX: 00007f9eb458ebe9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f9eb47b5fac
RBP: 0000000000000032 R08: 0011ea391452cac0 R09: 000000034bd40cbf
R10: 00007ffe4bd40ac0 R11: 0000000000000246 R12: 00007f9eb47b5fac
R13: 00007ffe4bd40ac0 R14: 0000000000196959 R15: 00007ffe4bd40ae0
 </TASK>