RBP: 00007fd44beb97e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd44c09d038 R14: 00007fd44c09cfa0 R15: 00007ffeb441e798
 </TASK>
watchdog: BUG: soft lockup - CPU#1 stuck for 226s! [syz.0.955:3683]
Modules linked in:
CPU: 1 PID: 3683 Comm: syz.0.955 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0x8ed/0xa10 kernel/smp.c:969
Code: 1f 89 de 83 e6 01 31 ff e8 e0 4e 0a 00 83 e3 01 48 8b 5c 24 10 75 07 e8 21 4b 0a 00 eb 42 f3 90 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 44 05 00 84 c0 75 10 41 f7 07 01 00 00 00 74 1e e8 fb 4a
RSP: 0018:ffffc90000c87760 EFLAGS: 00000293
RAX: dffffc0000000000 RBX: ffff8881f7138e80 RCX: ffff8881158013c0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000c87878 R08: ffff8881f7138e97 R09: 1ffff1103ee271d2
R10: dffffc0000000000 R11: ffffed103ee271d3 R12: 1ffff1103ee271d0
R13: 1ffff1103ee07af9 R14: 0000000000000000 R15: ffff8881f703d7c8
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557b90c908 CR3: 000000000660f000 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:1134
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:1442 [inline]
 text_poke_bp_batch+0x1d4/0x600 arch/x86/kernel/alternative.c:1642
 text_poke_flush arch/x86/kernel/alternative.c:1833 [inline]
 text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1840
 arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:146
 __jump_label_update+0x37c/0x3a0 kernel/jump_label.c:459
 jump_label_update+0x39b/0x450 kernel/jump_label.c:830
 __static_key_slow_dec_cpuslocked+0xf7/0x150 kernel/jump_label.c:248
 __static_key_slow_dec kernel/jump_label.c:255 [inline]
 static_key_slow_dec+0x45/0x90 kernel/jump_label.c:270
 sw_perf_event_destroy+0x99/0x2f0 kernel/events/core.c:9769
 _free_event+0x9bf/0xcd0 kernel/events/core.c:5100
 put_event kernel/events/core.c:5194 [inline]
 perf_event_release_kernel+0x825/0x8c0 kernel/events/core.c:5319
 perf_release+0x3b/0x40 kernel/events/core.c:5329
 __fput+0x20b/0x8b0 fs/file_table.c:311
 ____fput+0x15/0x20 fs/file_table.c:339
 task_work_run+0x127/0x190 kernel/task_work.c:188
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0xa9e/0x27e0 kernel/exit.c:889
 __do_sys_exit kernel/exit.c:972 [inline]
 __se_sys_exit kernel/exit.c:970 [inline]
 __x64_sys_exit+0x40/0x40 kernel/exit.c:970
 x64_sys_call+0x44/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:61
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd44be22f79
Code: Unable to access opcode bytes at RIP 0x7fd44be22f4f.
RSP: 002b:00007fd44a87dfd8 EFLAGS: 00000246 ORIG_RAX: 000000000000003c
RAX: ffffffffffffffda RBX: 00007fd44c09cfa0 RCX: 00007fd44be22f79
RDX: 00007fd44a87e9c8 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fd44beb97e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd44c09d038 R14: 00007fd44c09cfa0 R15: 00007ffeb441e798
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3679 Comm: syz.1.964 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
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:912
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 1d d6 03 f4 <eb> 87 fa 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 3f 0f b6 07
RSP: 0018:ffffc90000ad7620 EFLAGS: 00000046
RAX: 0000000000000003 RBX: ffff88811e2f442c RCX: ffffffff81500909
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffff88811e2f442c
RBP: ffffc90000ad76b0 R08: ffff88811e2f442c R09: 1ffff11023c5e885
R10: dffffc0000000000 R11: ffffed1023c5e886 R12: 1ffff1103ee00001
R13: ffff8881f7038ad4 R14: dffffc0000000000 R15: 1ffff9200015aec4
FS:  00007fbf911186c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faab22b26c0 CR3: 0000000136161000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 pv_wait arch/x86/include/asm/paravirt.h:597 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x60f/0x9c0 kernel/locking/qspinlock.c:508
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline]
 queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock include/linux/spinlock.h:188 [inline]
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:129 [inline]
 _raw_spin_lock_irq+0xe5/0xf0 kernel/locking/spinlock.c:170
 get_wchan kernel/sched/core.c:2021 [inline]
 perf_trace_sched_blocked_reason+0x24f/0x4b0 include/trace/events/sched.h:490
 trace_sched_blocked_reason include/trace/events/sched.h:490 [inline]
 try_to_wake_up+0xea1/0x1160 kernel/sched/core.c:4190
 wake_up_process kernel/sched/core.c:4348 [inline]
 wake_up_q+0xdf/0x1c0 kernel/sched/core.c:975
 __mutex_unlock_slowpath+0x298/0x3f0 kernel/locking/mutex.c:923
 mutex_unlock+0xe4/0x230 kernel/locking/mutex.c:557
 perf_trace_destroy+0x147/0x170 kernel/trace/trace_event_perf.c:243
 tp_perf_event_destroy+0x15/0x20 kernel/events/core.c:9936
 perf_try_init_event+0x3c3/0x430 kernel/events/core.c:11466
 perf_init_event kernel/events/core.c:11515 [inline]
 perf_event_alloc+0xedd/0x1a20 kernel/events/core.c:11809
 __do_sys_perf_event_open kernel/events/core.c:12347 [inline]
 __se_sys_perf_event_open+0x6f5/0x1bb0 kernel/events/core.c:12239
 __x64_sys_perf_event_open+0xbf/0xd0 kernel/events/core.c:12239
 x64_sys_call+0x50d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:299
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fbf926ddf79
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbf91118028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fbf92958090 RCX: 00007fbf926ddf79
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000200000000180
RBP: 00007fbf927747e0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbf92958128 R14: 00007fbf92958090 R15: 00007ffc7f2927f8
 </TASK>