watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor.2:12834] Modules linked in: irq event stamp: 30574 hardirqs last enabled at (30573): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 hardirqs last disabled at (30574): [] idtentry_enter_cond_rcu+0x1d/0x50 arch/x86/entry/common.c:607 softirqs last enabled at (13814): [] __do_softirq+0x748/0xa60 kernel/softirq.c:319 softirqs last disabled at (13753): [] asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 CPU: 0 PID: 12834 Comm: syz-executor.2 Not tainted 5.8.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline] RIP: 0010:smp_call_function_single+0x197/0x4f0 kernel/smp.c:382 Code: 48 8d 74 24 40 48 89 44 24 50 48 8b 44 24 08 48 89 44 24 58 e8 fa f9 ff ff 41 89 c5 eb 07 e8 f0 ff 0a 00 f3 90 44 8b 64 24 48 <31> ff 41 83 e4 01 44 89 e6 e8 5b fc 0a 00 45 85 e4 75 e1 e8 d1 ff RSP: 0018:ffffc9000466f5e0 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 1ffff920008cdec0 RCX: ffffffff8168b785 RDX: ffff88804550c200 RSI: ffffffff8168b770 RDI: 0000000000000005 RBP: ffffc9000466f6b8 R08: 0000000000000001 R09: ffff8880ae736dc7 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000011 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000040 FS: 00007fc9cbaaa700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00005bc80 CR3: 00000000960ba000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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 text_poke_sync arch/x86/kernel/alternative.c:996 [inline] text_poke_bp_batch+0x142/0x3d0 arch/x86/kernel/alternative.c:1174 text_poke_flush arch/x86/kernel/alternative.c:1296 [inline] text_poke_finish+0x16/0x21 arch/x86/kernel/alternative.c:1303 arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:126 jump_label_update kernel/jump_label.c:808 [inline] jump_label_update+0x1b3/0x3a0 kernel/jump_label.c:787 __static_key_slow_dec_cpuslocked.part.0+0x59/0x60 kernel/jump_label.c:248 __static_key_slow_dec_cpuslocked kernel/jump_label.c:243 [inline] __static_key_slow_dec kernel/jump_label.c:255 [inline] static_key_slow_dec+0x78/0xc0 kernel/jump_label.c:270 tracepoint_remove_func kernel/tracepoint.c:285 [inline] tracepoint_probe_unregister+0x4fb/0x6b0 kernel/tracepoint.c:355 trace_event_reg+0x181/0x350 kernel/trace/trace_events.c:308 perf_trace_event_unreg.isra.0+0xaa/0x200 kernel/trace/trace_event_perf.c:162 perf_trace_destroy+0xb5/0xf0 kernel/trace/trace_event_perf.c:243 _free_event+0x2ee/0x11e0 kernel/events/core.c:4795 put_event kernel/events/core.c:4889 [inline] perf_event_release_kernel+0xa24/0xe00 kernel/events/core.c:5004 perf_release+0x33/0x40 kernel/events/core.c:5014 __fput+0x33c/0x880 fs/file_table.c:281 task_work_run+0xdd/0x190 kernel/task_work.c:135 exit_task_work include/linux/task_work.h:25 [inline] do_exit+0xb72/0x2a40 kernel/exit.c:805 do_group_exit+0x125/0x310 kernel/exit.c:903 get_signal+0x40b/0x1ee0 kernel/signal.c:2743 do_signal+0x82/0x2520 arch/x86/kernel/signal.c:810 exit_to_usermode_loop arch/x86/entry/common.c:212 [inline] __prepare_exit_to_usermode+0x156/0x1f0 arch/x86/entry/common.c:246 do_syscall_64+0x6c/0xe0 arch/x86/entry/common.c:368 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45cb29 Code: Bad RIP value. RSP: 002b:00007fc9cbaa9cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000078bfa8 RCX: 000000000045cb29 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000078bfa8 RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bfac R13: 00007fff67a9f90f R14: 00007fc9cbaaa9c0 R15: 000000000078bfac Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 13865 Comm: syz-executor.0 Not tainted 5.8.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:765 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x51/0xe0 kernel/locking/spinlock.c:191 Code: e0 b4 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 80 00 00 00 48 83 3d 36 a7 cd 01 00 74 5f 48 89 df 57 9d <0f> 1f 44 00 00 e8 05 2d 92 f9 eb 34 e8 5e 33 92 f9 48 c7 c0 40 e0 RSP: 0018:ffffc90000da8dd0 EFLAGS: 00000082 RAX: 1ffffffff1369c08 RBX: 0000000000000082 RCX: ffffffff815aff60 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: 0000000000000082 RBP: ffff8880ae727740 R08: 0000000000000000 R09: ffff8880ae727743 R10: ffffed1015ce4ee8 R11: 0000000000000000 R12: ffff8880ae727740 R13: ffff8880ae727840 R14: ffff88808fac9b40 R15: dffffc0000000000 FS: 00007f86e73d9700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e421000 CR3: 000000004b7e9000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1516 [inline] __hrtimer_run_queues+0x5d1/0xfc0 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:arch_local_irq_restore arch/x86/include/asm/paravirt.h:765 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x8c/0xe0 kernel/locking/spinlock.c:191 Code: 48 c7 c0 40 e0 b4 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 37 48 83 3d fb a6 cd 01 00 74 22 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 35 39 68 f9 65 8b 05 5e c5 1a 78 RSP: 0018:ffffc90006edfd80 EFLAGS: 00000282 RAX: 1ffffffff1369c08 RBX: 0000000000000282 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffffffff89bd19e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 1ffff92000ddbfbc R13: 0000000000000000 R14: ffffc90006edfed0 R15: ffffffffa0fc92c3 do_settimeofday64 kernel/time/timekeeping.c:1254 [inline] do_settimeofday64+0x34b/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:00007f86e73d8c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 RAX: ffffffffffffffda RBX: 00000000004db560 RCX: 000000000045cb29 RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000000 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000007b R14: 00000000004c34ac R15: 00007f86e73d96d4