watchdog: BUG: soft lockup - CPU#0 stuck for 225s! [kworker/u4:3:332]
Modules linked in:
CPU: 0 PID: 332 Comm: kworker/u4:3 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0x8c3/0x9f0 kernel/smp.c:969
Code: 84 c0 0f 85 9d 00 00 00 41 8b 1f 89 de 83 e6 01 31 ff e8 90 37 0a 00 83 e3 01 48 8b 5c 24 10 75 07 e8 d1 33 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:ffffc900079b7860 EFLAGS: 00000293
RAX: ffffffff815e8b35 RBX: ffff8881f7038e80 RCX: ffff888128ec3b40
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900079b7978 R08: dffffc0000000000 R09: ffffed103ee271d9
R10: ffffed103ee271d9 R11: 1ffff1103ee271d8 R12: 1ffff1103ee071d0
R13: 1ffff1103ee2784d R14: 0000000000000001 R15: ffff8881f713c268
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f87c33802de CR3: 000000000660f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000d DR6: 00000000ffff0ff0 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+0x1cd/0x5a0 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_enable_cpuslocked+0x126/0x240 kernel/jump_label.c:177
 static_key_enable+0x1a/0x30 kernel/jump_label.c:190
 toggle_allocation_gate+0xb4/0x410 mm/kfence/core.c:766
 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1792 Comm: syz.5.348 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:kasan_mem_to_shadow include/linux/kasan.h:58 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:133 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x258/0x290 mm/kasan/generic.c:189
Code: 8d 4c 19 03 eb 13 4f 8d 4c 19 04 eb 0c 4f 8d 4c 19 05 eb 05 4f 8d 4c 19 06 4d 89 ce 4d 85 c9 0f 84 5b ff ff ff 4c 8d 4c 3e ff <4d> 89 ca 49 c1 ea 03 4d 01 c2 4d 39 d6 75 11 41 83 e1 07 4d 0f be
RSP: 0018:ffffc90000c77908 EFLAGS: 00000082
RAX: 0000000000000001 RBX: ffffffffffffffff RCX: ffffffff84a91c60
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90000c77960
RBP: ffffc90000c77920 R08: dffffc0000000000 R09: ffffc90000c77963
R10: fffff5200018ef2d R11: 1ffff9200018ef2c R12: 1ffff9200018ef28
R13: dffffc0000000000 R14: fffff5200018ef2c R15: dffffc0000000001
FS:  00007f20cb0be6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c319312 CR3: 0000000136aaf000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
 instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
 atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:512 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:82 [inline]
 do_raw_spin_lock_flags include/linux/spinlock.h:200 [inline]
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline]
 _raw_spin_lock_irqsave+0xb0/0x110 kernel/locking/spinlock.c:162
 vga_put drivers/gpu/vga/vgaarb.c:558 [inline]
 vga_arb_release+0x20e/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
 get_signal+0x13fb/0x1480 kernel/signal.c:2679
 arch_do_signal_or_restart+0xc1/0x10f0 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0xa7/0xe0 kernel/entry/common.c:178
 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: 0033:0x7f20cc656749
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:00007f20cb0be038 EFLAGS: 00000246 ORIG_RAX: 000000000000010f
RAX: 0000000000000001 RBX: 00007f20cc8acfa0 RCX: 00007f20cc656749
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00002000000000c0
RBP: 00007f20cc6daf91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f20cc8ad038 R14: 00007f20cc8acfa0 R15: 00007ffe2aed3cc8
 </TASK>