RBP: 00007f739f26e024 R08: 0000000000000021 R09: 0023b2e4ec9946a2
R10: 00000013d68fe157 R11: 0000000000000e58 R12: 0000000000000000
R13: 00007f739f45f038 R14: 00007f739f45efa0 R15: 00007ffd56b4b098
 </TASK>
watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [syz.0.28:413]
Modules linked in:
CPU: 0 PID: 413 Comm: syz.0.28 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:check_kcov_mode kernel/kcov.c:172 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:227 [inline]
RIP: 0010:__sanitizer_cov_trace_cmp8+0x2e/0x80 kernel/kcov.c:273
Code: 48 8b 45 08 65 48 8b 0d e0 af 98 7e 65 8b 15 e1 af 98 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 57 83 b9 5c 0b 00 00 00 <74> 4e 8b 91 38 0b 00 00 83 fa 03 75 43 48 8b 91 40 0b 00 00 44 8b
RSP: 0000:ffffc90000007ca8 EFLAGS: 00000246
RAX: ffffffff84483b19 RBX: ffff8881081a4f60 RCX: ffff888113363b40
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007ca8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000000fa0 R12: 0000000000000000
R13: ffff8881081a4f48 R14: 0000000000000000 R15: 1ffff110210349ec
FS:  00007f739dc306c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2befc91ff8 CR3: 000000012a68a000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 can_stat_update+0xa99/0xbb0 net/can/proc.c:167
 call_timer_fn+0x38/0x290 kernel/time/timer.c:1459
 expire_timers kernel/time/timer.c:1504 [inline]
 __run_timers+0x637/0x9a0 kernel/time/timer.c:1775
 run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1788
 handle_softirqs+0x250/0x560 kernel/softirq.c:583
 __do_softirq kernel/softirq.c:621 [inline]
 invoke_softirq kernel/softirq.c:443 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:670
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:682
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:preempt_schedule_irq+0xa5/0x120 kernel/sched/core.c:6942
Code: 44 24 20 00 02 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 4d bf 01 00 00 00 e8 91 dd 94 fc fb bf 01 00 00 00 <e8> 76 e4 ff ff fa bf 01 00 00 00 e8 2b df 94 fc 65 48 8b 1d 13 87
RSP: 0000:ffffc90000ca7d60 EFLAGS: 00000246
RAX: 1ffff1102266c8be RBX: ffffc90000ca7e28 RCX: ffffffff870ccf00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc90000ca7dd8 R08: ffff888113363b47 R09: 1ffff1102266c768
R10: dffffc0000000000 R11: ffffed102266c769 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000194fac
 irqentry_exit_cond_resched+0x29/0x30 kernel/entry/common.c:398
 irqentry_exit+0x37/0x40 kernel/entry/common.c:432
 sysvec_reschedule_ipi+0x78/0x80 arch/x86/kernel/smp.c:225
 asm_sysvec_reschedule_ipi+0x1b/0x20 arch/x86/include/asm/idtentry.h:681
RIP: 0010:exit_to_user_mode_loop+0x49/0xe0 kernel/entry/common.c:168
Code: 52 00 e8 ba 67 e8 00 fa e8 34 2d 55 03 65 48 8b 05 ec f6 a8 7e 4c 8b 30 41 f7 c6 0e 30 02 00 0f 84 91 00 00 00 fb 41 f6 c6 08 <74> 05 e8 c0 68 59 03 41 f7 c6 00 10 00 00 74 08 48 89 df e8 bf b0
RSP: 0000:ffffc90000ca7ed0 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffc90000ca7f58 RCX: d2603c093a9c4500
RDX: 1ffffffff0e18a00 RSI: 0000000000000008 RDI: ffffc90000ca7f58
RBP: ffffc90000ca7ee0 R08: ffffffff870c5008 R09: ffffffff870c5018
R10: ffffffff870c5003 R11: 1ffffffff0e18a00 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000008 R15: ffff888113363b40
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214
 irqentry_exit_to_user_mode+0x9/0x10 kernel/entry/common.c:320
 irqentry_exit+0x12/0x40 kernel/entry/common.c:411
 sysvec_irq_work+0x61/0xc0 arch/x86/kernel/irq_work.c:17
 asm_sysvec_irq_work+0x1b/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0033:0x7f739f1f66d0
Code: 83 c0 16 83 e0 f7 74 12 50 48 8d 3d 4a 2c 07 00 e8 65 65 f9 ff 0f 1f 44 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <83> ff 21 74 0b c3 66 2e 0f 1f 84 00 00 00 00 00 55 53 48 89 f3 48
RSP: 002b:00007f739dc2fab8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f739f280071
RDX: 00007f739dc2fac0 RSI: 00007f739dc2fbf0 RDI: 0000000000000021
RBP: 00007f739f26e024 R08: 0000000000000021 R09: 0023b2e4ec9946a2
R10: 00000013d68fe157 R11: 0000000000000e58 R12: 0000000000000000
R13: 00007f739f45f038 R14: 00007f739f45efa0 R15: 00007ffd56b4b098
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 arch/x86/kernel/process.c:729