RBP: 00007fb50f51cb20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb50f70c038 R14: 00007fb50f70bfa0 R15: 00007ffec1135a48
watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.1.18508:12268]
Modules linked in:
CPU: 0 PID: 12268 Comm: syz.1.18508 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:check_kcov_mode kernel/kcov.c:156 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x30/0x60 kernel/kcov.c:188
Code: 45 08 65 48 8b 0d b0 b6 9d 7e 65 8b 15 b5 b6 9d 7e f7 c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 35 83 b9 dc 0a 00 00 00 74 2c <8b> 91 b8 0a 00 00 83 fa 02 75 21 48 8b 91 c0 0a 00 00 48 8b 32 48
RSP: 0018:ffffc90000ce7a80 EFLAGS: 00000246
RAX: ffffffff8182c58b RBX: ffff88812394c010 RCX: ffff888104dda800
RDX: 0000000000000001 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90000ce7a80 R08: ffffffff86c38ba7 R09: 1ffffffff0d87174
R10: dffffc0000000000 R11: fffffbfff0d87175 R12: ffff88812394c3e8
R13: ffffffff86606c38 R14: ffff888123949810 R15: ffff88812394c000
FS:  00007fb50dedd6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff6f88b5d58 CR3: 000000011873c000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000200000000880 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 pmu_filter_match kernel/events/core.c:2314 [inline]
 event_filter_match kernel/events/core.c:2326 [inline]
 perf_iterate_sb_cpu kernel/events/core.c:7532 [inline]
 perf_iterate_sb+0x5fb/0xd50 kernel/events/core.c:7564
 perf_event_bpf_event+0x42d/0x540 kernel/events/core.c:8890
 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: 0033:0x7fb50f485559
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:00007fb50dedd028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fb50f70bfa0 RCX: 00007fb50f485559
RDX: 0000000000000048 RSI: 0000200000000340 RDI: 0000000000000005
RBP: 00007fb50f51cb20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb50f70c038 R14: 00007fb50f70bfa0 R15: 00007ffec1135a48
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 12340 Comm: kworker/u4:5 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
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 63 90 0a 00 41 83 e6 01 49 bc 00 00 00 00 00 fc ff df 75 0a e8 9e 8c 0a 00 e9 a4 00 00 00 f3 90 <f7> 44 24 48 01 00 00 00 0f 84 8f 00 00 00 e8 84 8c 0a 00 eb e9 e8
RSP: 0018:ffffc90001677700 EFLAGS: 00000293
RAX: ffffffff815a2a3c RBX: 0000000000000000 RCX: ffff88812282a800
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900016777f0 R08: ffff8881f7057687 R09: 1ffff1103ee0aed0
R10: dffffc0000000000 R11: ffffed103ee0aed1 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff920002ceee4
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0cfff08ad2 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_disable_cpuslocked+0xc5/0x1a0 kernel/jump_label.c:207
 static_key_disable+0x1a/0x30 kernel/jump_label.c:215
 toggle_allocation_gate+0x3a5/0x440 mm/kfence/core.c:638
 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