watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor.5:10508] Modules linked in: irq event stamp: 28456 hardirqs last enabled at (28455): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 hardirqs last disabled at (28456): [] idtentry_enter_cond_rcu+0x1d/0x50 arch/x86/entry/common.c:607 softirqs last enabled at (28440): [] __do_softirq+0x748/0xa60 kernel/softirq.c:319 softirqs last disabled at (28431): [] asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 CPU: 0 PID: 10508 Comm: syz-executor.5 Not tainted 5.8.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:write_comp_data+0x2f/0x80 kernel/kcov.c:218 Code: 05 16 4c 8e 7e 65 48 8b 34 25 00 ff 01 00 a9 00 01 ff 00 74 0f f6 c4 01 74 59 8b 86 04 14 00 00 85 c0 74 4f 8b 86 e0 13 00 00 <83> f8 03 75 44 48 8b 86 e8 13 00 00 8b b6 e4 13 00 00 4c 8b 00 48 RSP: 0018:ffffc900017a7bf8 EFLAGS: 00000246 RAX: 0000000000000002 RBX: 1ffff920002f4f84 RCX: ffffffff8168b785 RDX: 0000000000000001 RSI: ffff888056820400 RDI: 0000000000000005 RBP: ffffc900017a7cc8 R08: 0000000000000001 R09: ffff8880ae736dc7 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000040 FS: 00007f35ec01d700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000078c000 CR3: 0000000092ee7000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: csd_lock_wait kernel/smp.c:108 [inline] smp_call_function_single+0x1a5/0x4f0 kernel/smp.c:382 smp_call_function_many_cond+0x1a4/0x990 kernel/smp.c:518 smp_call_function_many kernel/smp.c:577 [inline] smp_call_function kernel/smp.c:599 [inline] on_each_cpu+0x4a/0x240 kernel/smp.c:699 clock_was_set+0x18/0x20 kernel/time/hrtimer.c:872 do_settimeofday64 kernel/time/timekeeping.c:1257 [inline] do_settimeofday64+0x350/0x4e0 kernel/time/timekeeping.c:1223 do_sys_settimeofday64 kernel/time/time.c:195 [inline] do_sys_settimeofday64+0x1de/0x260 kernel/time/time.c:169 __do_sys_clock_settime kernel/time/posix-timers.c:1079 [inline] __se_sys_clock_settime kernel/time/posix-timers.c:1067 [inline] __x64_sys_clock_settime+0x197/0x260 kernel/time/posix-timers.c:1067 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45cb29 Code: Bad RIP value. RSP: 002b:00007f35ec01cc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 RAX: ffffffffffffffda RBX: 00000000004db560 RCX: 000000000045cb29 RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000000 RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000007b R14: 00000000004c34ac R15: 00007f35ec01d6d4 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3877 Comm: systemd-udevd Not tainted 5.8.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__raw_callee_save___pv_queued_spin_unlock+0xc/0x12 Code: 56 57 41 50 41 51 41 52 41 53 e8 ff 14 00 00 41 5b 41 5a 41 59 41 58 5f 5e 5a 59 c3 66 90 52 b8 01 00 00 00 31 d2 f0 0f b0 17 <3c> 01 75 02 5a c3 56 0f b6 f0 e8 c5 ff ff ff 5e 5a c3 66 90 48 b8 RSP: 0018:ffffc90000da8cb8 EFLAGS: 00000046 RAX: 0000000000000001 RBX: 0000000000000082 RCX: ffffffff815aff60 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8cbe0628 RBP: ffffffff8cbe0628 R08: 0000000000000000 R09: ffffffff8cbe062b R10: fffffbfff197c0c5 R11: 0000000000000000 R12: ffffffff8cbe0630 R13: ffffffff8cbe0638 R14: 1ffff920001b51a2 R15: ffff888090ee8b40 FS: 00007f2fee3978c0(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055cfd40a49d8 CR3: 000000009a010000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_queued_spin_unlock arch/x86/include/asm/paravirt.h:656 [inline] queued_spin_unlock arch/x86/include/asm/qspinlock.h:55 [inline] do_raw_spin_unlock+0x171/0x230 kernel/locking/spinlock_debug.c:139 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:159 [inline] _raw_spin_unlock_irqrestore+0x1e/0xe0 kernel/locking/spinlock.c:191 debug_object_deactivate lib/debugobjects.c:732 [inline] debug_object_deactivate+0x264/0x300 lib/debugobjects.c:698 debug_hrtimer_deactivate kernel/time/hrtimer.c:421 [inline] debug_deactivate kernel/time/hrtimer.c:482 [inline] __run_hrtimer kernel/time/hrtimer.c:1488 [inline] __hrtimer_run_queues+0x3cb/0xfc0 kernel/time/hrtimer.c:1584 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1646 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] __sysvec_apic_timer_interrupt+0x142/0x5e0 arch/x86/kernel/apic/apic.c:1097 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] sysvec_apic_timer_interrupt+0xe0/0x120 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 RIP: 0010:tomoyo_domain_quota_is_ok+0x10a/0x550 security/tomoyo/util.c:1032 Code: 24 0f 84 f4 00 00 00 49 be 00 00 00 00 00 fc ff df eb 5f e8 28 54 11 fe 48 89 e8 48 89 ee 48 c1 e8 03 83 e6 07 42 0f b6 0c 30 <48> 8d 45 07 48 89 c2 48 c1 ea 03 42 0f b6 14 32 40 38 f1 40 0f 9e RSP: 0018:ffffc90000f77868 EFLAGS: 00000246 RAX: 1ffff11014e31d60 RBX: 0000000000000010 RCX: 0000000000000000 RDX: ffff88809bf18100 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffff8880a718eb00 R08: 0000000000000001 R09: ffffffff8cab9727 R10: 0000000000000010 R11: 0000000000000000 R12: 0000000000000002 R13: 00000000000000c2 R14: dffffc0000000000 R15: 0000000000000000 tomoyo_supervisor+0x2d4/0xeb0 security/tomoyo/common.c:2089 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline] tomoyo_path_permission security/tomoyo/file.c:587 [inline] tomoyo_path_permission+0x25c/0x360 security/tomoyo/file.c:573 tomoyo_path_perm+0x2e7/0x3f0 security/tomoyo/file.c:838 security_inode_getattr+0xcf/0x140 security/security.c:1278 vfs_getattr fs/stat.c:121 [inline] vfs_statx+0x170/0x390 fs/stat.c:206 vfs_lstat include/linux/fs.h:3301 [inline] __do_sys_newlstat+0x91/0x110 fs/stat.c:374 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f2fed20a335 Code: Bad RIP value. RSP: 002b:00007ffc8f9dc838 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 RAX: ffffffffffffffda RBX: 000055cfd408d070 RCX: 00007f2fed20a335 RDX: 00007ffc8f9dc870 RSI: 00007ffc8f9dc870 RDI: 000055cfd408c070 RBP: 00007ffc8f9dc930 R08: 00007f2fed4c9178 R09: 0000000000001010 R10: 0000000000000020 R11: 0000000000000246 R12: 000055cfd408c070 R13: 000055cfd408c090 R14: 000055cfd40a0cfb R15: 000055cfd40a0d00