RBP: 00007f297b4f5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f297b4f6038 R14: 00007fffe4ed16a0 R15: 00007fffe4ed1788
watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.4.1846:6906]
Modules linked in:
CPU: 0 PID: 6906 Comm: syz.4.1846 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:check_kcov_mode kernel/kcov.c:174 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x36/0x60 kernel/kcov.c:197
Code: a0 b7 9d 7e 65 8b 15 a5 b7 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 8d 7e 01 8b 89 bc
RSP: 0000:ffffc90000e975e0 EFLAGS: 00000246
RAX: ffffffff8182b156 RBX: ffff8881266da010 RCX: ffff88812a15cf00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000e975e0 R08: ffffc90000e97277 R09: ffffc90000e97260
R10: dffffc0000000000 R11: fffff520001d2e4f R12: ffff8881266da3e8
R13: ffff8881266da000 R14: ffff8881158f6810 R15: ffffffff86606898
FS:  00007f2979cd76c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 0000000112e17000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 pmu_filter_match kernel/events/core.c:2325 [inline]
 event_filter_match kernel/events/core.c:2337 [inline]
 perf_iterate_sb_cpu kernel/events/core.c:7526 [inline]
 perf_iterate_sb+0x5f6/0xd50 kernel/events/core.c:7558
 perf_event_task kernel/events/core.c:7804 [inline]
 perf_event_exit_task+0x147c/0x14e0 kernel/events/core.c:12660
 do_exit+0x5d1/0x2500 kernel/exit.c:857
 do_group_exit+0x141/0x310 kernel/exit.c:986
 get_signal+0xf7d/0x12e0 kernel/signal.c:2793
 arch_do_signal_or_restart+0xe2/0x11d0 arch/x86/kernel/signal.c:805
 handle_signal_work kernel/entry/common.c:145 [inline]
 exit_to_user_mode_loop+0xa2/0xe0 kernel/entry/common.c:169
 exit_to_user_mode_prepare+0x76/0xa0 kernel/entry/common.c:199
 irqentry_exit_to_user_mode+0x9/0x10 kernel/entry/common.c:287
 irqentry_exit+0x12/0x60 kernel/entry/common.c:375
 sysvec_apic_timer_interrupt+0xcb/0xe0 arch/x86/kernel/apic/apic.c:1106
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0033:0x7f297b27aeb9
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:00007f2979cd70e8 EFLAGS: 00000246
RAX: fffffffffffffff5 RBX: 00007f297b4f5fa8 RCX: 00007f297b27aeb9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f297b4f5fa8
RBP: 00007f297b4f5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f297b4f6038 R14: 00007fffe4ed16a0 R15: 00007fffe4ed1788
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6940 Comm: kworker/u4:6 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x60 kernel/kcov.c:196
Code: 00 00 55 48 89 e5 53 48 89 fb e8 13 00 00 00 48 8b 3d 3c bc 5e 05 48 89 de e8 64 de 39 00 5b 5d c3 00 55 48 89 e5 48 8b 45 08 <65> 48 8b 0d a0 b7 9d 7e 65 8b 15 a5 b7 9d 7e f7 c2 00 01 ff 00 74
RSP: 0018:ffffc90001087710 EFLAGS: 00000202
RAX: ffffffff815a319c RBX: 0000000000000000 RCX: ffff88810f0b62c0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90001087710 R08: ffff8881f7057647 R09: 1ffff1103ee0aec8
R10: dffffc0000000000 R11: ffffed103ee0aec9 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff92000210ee8
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000000640f000 CR4: 00000000003506a0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 csd_lock_wait kernel/smp.c:229 [inline]
 smp_call_function_single+0x21c/0x490 kernel/smp.c:517
 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_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+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