watchdog: BUG: soft lockup - CPU#1 stuck for 246s! [kworker/1:45:1609]
Modules linked in:
CPU: 1 PID: 1609 Comm: kworker/1:45 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: events perf_sched_delayed
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0x8e3/0xa10 kernel/smp.c:969
Code: 84 c0 0f 85 9d 00 00 00 41 8b 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
RSP: 0018:ffffc900017b7960 EFLAGS: 00000293
RAX: ffffffff815f7be5 RBX: ffff8881f7138e80 RCX: ffff88812dad3b40
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900017b7a78 R08: ffff8881f7038ec7 R09: 1ffff1103ee071d8
R10: dffffc0000000000 R11: ffffed103ee071d9 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: 00007f2d6ad55832 CR3: 000000000660f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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_disable_cpuslocked+0xc5/0x1a0 kernel/jump_label.c:207
 static_key_disable+0x1a/0x30 kernel/jump_label.c:215
 perf_sched_delayed+0x56/0x70 kernel/events/core.c:4974
 process_one_work+0x6be/0xba0 kernel/workqueue.c:2325
 worker_thread+0xa59/0x1200 kernel/workqueue.c:2472
 kthread+0x411/0x500 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4179 Comm: syz.1.1107 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:__raw_callee_save___pv_queued_spin_unlock+0x10/0x17
Code: 41 51 41 52 41 53 e8 6b 08 00 00 41 5b 41 5a 41 59 41 58 5f 5e 5a 59 5d c3 90 55 48 89 e5 52 b8 01 00 00 00 31 d2 f0 0f b0 17 <3c> 01 75 03 5a 5d c3 56 0f b6 f0 e8 bc ff ff ff 5e 5a 5d c3 0f 1f
RSP: 0018:ffffc90000b87ce8 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 0000000000000802 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000802 RDI: ffffffff87158860
RBP: ffffc90000b87cf0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000170f90 R12: 0000000000000000
R13: ffff88811e31cc18 R14: ffff88811e31cc24 R15: dffffc0000000000
FS:  000055558ed22500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6aea7cf060 CR3: 000000013bcd7000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 pv_queued_spin_unlock arch/x86/include/asm/paravirt.h:590 [inline]
 queued_spin_unlock arch/x86/include/asm/qspinlock.h:56 [inline]
 do_raw_spin_unlock include/linux/spinlock.h:217 [inline]
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:159 [inline]
 _raw_spin_unlock_irqrestore+0x46/0x80 kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:419 [inline]
 vga_put drivers/gpu/vga/vgaarb.c:564 [inline]
 vga_arb_release+0x3e9/0x930 drivers/gpu/vga/vgaarb.c:1350
 __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
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f9202e21819
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:00007fffb1b792a8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f920309cda0 RCX: 00007f9202e21819
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f920309cda0 R08: 0000000000000006 R09: 0000000000000000
R10: 000000000003fce8 R11: 0000000000000246 R12: 0000000000023652
R13: 00007f920309b09c R14: 0000000000023384 R15: 00007f920309b090
 </TASK>