syzbot

RBP: 00007f808d606e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f808d7ea038 R14: 00007f808d7e9fa0 R15: 00007ffeb929c278
watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.0.18287:31345]
Modules linked in:
CPU: 0 PID: 31345 Comm: syz.0.18287 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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+0x59f/0xd50 kernel/events/core.c:7558
Code: 8b 6d 00 b8 18 01 00 00 49 01 c5 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ef e8 f1 79 1c 00 <49> 8b 45 00 48 85 c0 74 22 49 8d 7e f0 ff d0 41 89 c5 31 ff 89 c6
RSP: 0018:ffffc90000f6f8f0 EFLAGS: 00000246
RAX: 1ffffffff0cc0d9b RBX: ffff88813b930010 RCX: dffffc0000000000
RDX: ffffc9000921e000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90000f6f930 R08: ffffc90000f6f5b7 R09: ffffc90000f6f5a0
R10: dffffc0000000000 R11: fffff520001edeb7 R12: ffff88813b9303e8
R13: ffffffff86606cd8 R14: ffff8881395f1810 R15: ffff88813b930000
FS:  00007f808bfcb6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f808bfa9ff8 CR3: 0000000109a33000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 00000000000f0602
Call Trace:
 perf_event_ksymbol+0x28e/0x340 kernel/events/core.c:8772
 perf_event_bpf_emit_ksymbols kernel/events/core.c:8828 [inline]
 perf_event_bpf_event+0x33e/0x540 kernel/events/core.c:8859
 bpf_prog_load+0x1146/0x14e0 kernel/bpf/syscall.c:2261
 __do_sys_bpf kernel/bpf/syscall.c:4435 [inline]
 __se_sys_bpf+0x49a/0x740 kernel/bpf/syscall.c:4391
 __x64_sys_bpf+0x7b/0x90 kernel/bpf/syscall.c:4391
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f808d570e59
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:00007f808bfcb028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f808d7e9fa0 RCX: 00007f808d570e59
RDX: 0000000000000090 RSI: 0000200000000880 RDI: 0000000000000005
RBP: 00007f808d606e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f808d7ea038 R14: 00007f808d7e9fa0 R15: 00007ffeb929c278
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 31405 Comm: kworker/u4:0 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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 03 85 0a 00 41 83 e6 01 49 bc 00 00 00 00 00 fc ff df 75 0a e8 3e 81 0a 00 e9 a4 00 00 00 f3 90 <f7> 44 24 48 01 00 00 00 0f 84 8f 00 00 00 e8 24 81 0a 00 eb e9 e8
RSP: 0018:ffffc900021af700 EFLAGS: 00000293
RAX: ffffffff815a20dc RBX: 0000000000000000 RCX: ffff888114533b40
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900021af7f0 R08: ffff8881f7057647 R09: 1ffff1103ee0aec8
R10: dffffc0000000000 R11: ffffed103ee0aec9 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff92000435ee4
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe11c6cb000 CR3: 000000000640f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 smp_call_function_many_cond+0x8f5/0x9d0 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+0x38f/0x3b0 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+0x6fd/0xbc0 kernel/workqueue.c:2301
 worker_thread+0xa8e/0x13c0 kernel/workqueue.c:2447
 kthread+0x324/0x3b0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298