RBP: 00007ffc9b15ec00 R08: 0000000000000003 R09: 00000000fffffffd
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000094
R13: 00000000000927c0 R14: 0000000000013453 R15: 00007ffc9b15ed60
watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.3.832:3219]
Modules linked in:
CPU: 0 PID: 3219 Comm: syz.3.832 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__pmu_filter_match kernel/events/core.c:2309 [inline]
RIP: 0010:pmu_filter_match kernel/events/core.c:2326 [inline]
RIP: 0010:event_filter_match kernel/events/core.c:2337 [inline]
RIP: 0010:perf_iterate_sb_cpu kernel/events/core.c:7526 [inline]
RIP: 0010:perf_iterate_sb+0x5c5/0xd50 kernel/events/core.c:7558
Code: 49 8b 07 48 85 c0 74 22 49 8d 7e f0 ff d0 41 89 c7 31 ff 89 c6 e8 5b 08 e2 ff 45 85 ff 0f 84 91 00 00 00 e8 9d 04 e2 ff eb 05 <e8> 96 04 e2 ff 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df
RSP: 0018:ffffc90002d9fc90 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8881335cd810 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002d9fcd0 R08: ffffc90002d9f977 R09: ffffc90002d9f960
R10: dffffc0000000000 R11: fffff520005b3f2f R12: ffff8881335cdbe8
R13: ffff8881335cd800 R14: ffff8881335ca810 R15: ffffffff86606958
FS: 000055556d40c500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa9f0ff4690 CR3: 000000010fbaa000 CR4: 00000000003506b0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
perf_event_comm_event kernel/events/core.c:7884 [inline]
perf_event_comm+0x174/0x1e0 kernel/events/core.c:7911
__set_task_comm+0x5c/0x270 fs/exec.c:1239
set_task_comm include/linux/sched.h:1824 [inline]
__do_sys_prctl kernel/sys.c:2439 [inline]
__se_sys_prctl+0x5bc/0x1230 kernel/sys.c:2375
__x64_sys_prctl+0xbf/0xd0 kernel/sys.c:2375
do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fa9f024c90a
Code: 48 c7 c0 e8 ff ff ff 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 9d 00 00 00 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:00007ffc9b15eac8 EFLAGS: 00000246 ORIG_RAX: 000000000000009d
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa9f024c90a
RDX: 0000000000000000 RSI: 00007ffc9b15ec00 RDI: 000000000000000f
RBP: 00007ffc9b15ec00 R08: 0000000000000003 R09: 00000000fffffffd
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000094
R13: 00000000000927c0 R14: 0000000000013453 R15: 00007ffc9b15ed60
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 457 Comm: kworker/u4:5 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:229 [inline]
RIP: 0010:smp_call_function_single+0x209/0x490 kernel/smp.c:517
Code: 48 44 89 f6 83 e6 01 31 ff e8 13 88 0a 00 41 83 e6 01 49 bc 00 00 00 00 00 fc ff df 75 0a e8 4e 84 0a 00 e9 a4 00 00 00 f3 90 <f7> 44 24 48 01 00 00 00 0f 84 8f 00 00 00 e8 34 84 0a 00 eb e9 e8
RSP: 0018:ffffc90000da7720 EFLAGS: 00000293
RAX: ffffffff815a2f1c RBX: 0000000000000000 RCX: ffff888116534f00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000da7810 R08: ffff8881f7057647 R09: 1ffff1103ee0aec8
R10: dffffc0000000000 R11: ffffed103ee0aec9 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff920001b4ee8
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f14e19c3502 CR3: 000000000640f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
smp_call_function_many_cond+0x90a/0xa00 kernel/smp.c:653
smp_call_function_many kernel/smp.c:716 [inline]
smp_call_function kernel/smp.c:738 [inline]
on_each_cpu+0xab/0x180 kernel/smp.c:837
text_poke_sync arch/x86/kernel/alternative.c:1568 [inline]
text_poke_bp_batch+0x1cb/0x5f0 arch/x86/kernel/alternative.c:1768
text_poke_flush arch/x86/kernel/alternative.c:1959 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1966
arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:126
__jump_label_update+0x37c/0x3a0 kernel/jump_label.c:459
jump_label_update+0x34c/0x3e0 kernel/jump_label.c:825
static_key_enable_cpuslocked+0x126/0x240 kernel/jump_label.c:177
static_key_enable+0x1a/0x30 kernel/jump_label.c:190
toggle_allocation_gate+0xba/0x440 mm/kfence/core.c:624
process_one_work+0x6e1/0xba0 kernel/workqueue.c:2301
worker_thread+0xa6a/0x13c0 kernel/workqueue.c:2447
kthread+0x346/0x3d0 kernel/kthread.c:313
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298