watchdog: BUG: soft lockup - CPU#1 stuck for 134s! [syz-executor6:6816]
Modules linked in:
irq event stamp: 326884
hardirqs last  enabled at (326883): [<00000000fc92324e>] restore_regs_and_return_to_kernel+0x0/0x21
hardirqs last disabled at (326884): [<00000000a7b1d7de>] apic_timer_interrupt+0xa4/0xb0 arch/x86/entry/entry_64.S:920
softirqs last  enabled at (1322): [<00000000aac03531>] __do_softirq+0x7a0/0xb85 kernel/softirq.c:311
softirqs last disabled at (1303): [<00000000fbb7e87b>] invoke_softirq kernel/softirq.c:365 [inline]
softirqs last disabled at (1303): [<00000000fbb7e87b>] irq_exit+0x1cc/0x200 kernel/softirq.c:405
CPU: 1 PID: 6816 Comm: syz-executor6 Not tainted 4.15.0-rc4-next-20171220+ #77
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rep_nop arch/x86/include/asm/processor.h:659 [inline]
RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:664 [inline]
RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline]
RIP: 0010:smp_call_function_single+0x364/0x560 kernel/smp.c:302
RSP: 0018:ffff8801beaf6700 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff11
RAX: ffff8801bf2b25c0 RBX: 1ffff10037d5ece8 RCX: ffffffff81650c82
RDX: 0000000000000000 RSI: 00000000000000fb RDI: ffff8801beaf67f8
RBP: ffff8801beaf6850 R08: 1ffff10037d5ed00 R09: 0000000000000000
R10: ffff8801beaf6880 R11: 0000000000000000 R12: ffff8801beaf67f8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffed0037d5ecf4
FS:  00007f55a367a700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020a60fd0 CR3: 0000000006422006 CR4: 00000000001626e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 smp_call_function_many+0x773/0x930 kernel/smp.c:434
 smp_call_function kernel/smp.c:492 [inline]
 on_each_cpu+0x3d/0x1b0 kernel/smp.c:602
 text_poke_bp+0xbb/0x170 arch/x86/kernel/alternative.c:807
 __jump_label_transform.isra.0+0x6a5/0x8a0 arch/x86/kernel/jump_label.c:102
 arch_jump_label_transform+0x2f/0x40 arch/x86/kernel/jump_label.c:110
 __jump_label_update+0x207/0x2d0 kernel/jump_label.c:368
 jump_label_update+0x22c/0x2b0 kernel/jump_label.c:735
 static_key_slow_dec_cpuslocked+0x176/0x1d0 kernel/jump_label.c:204
 __static_key_slow_dec kernel/jump_label.c:214 [inline]
 static_key_slow_dec+0x56/0x90 kernel/jump_label.c:228
 tracepoint_remove_func kernel/tracepoint.c:252 [inline]
 tracepoint_probe_unregister+0x70d/0x870 kernel/tracepoint.c:323
 trace_event_reg+0xed/0x320 kernel/trace/trace_events.c:309
 perf_trace_event_unreg.isra.2+0xad/0x1f0 kernel/trace/trace_event_perf.c:155
 perf_trace_destroy+0xbc/0x100 kernel/trace/trace_event_perf.c:236
 tp_perf_event_destroy+0x15/0x20 kernel/events/core.c:7943
 _free_event+0x3bd/0x10f0 kernel/events/core.c:4104
 put_event+0x24/0x30 kernel/events/core.c:4187
 perf_event_release_kernel+0x407/0xc10 kernel/events/core.c:4288
 perf_release+0x37/0x50 kernel/events/core.c:4298
 __fput+0x327/0x7e0 fs/file_table.c:209
 ____fput+0x15/0x20 fs/file_table.c:243
 task_work_run+0x199/0x270 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x9bb/0x1ad0 kernel/exit.c:869
 do_group_exit+0x149/0x400 kernel/exit.c:972
 get_signal+0x73f/0x16c0 kernel/signal.c:2337
 do_signal+0x94/0x1ee0 arch/x86/kernel/signal.c:809
 exit_to_usermode_loop+0x258/0x2f0 arch/x86/entry/common.c:161
 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline]
 syscall_return_slowpath+0x490/0x550 arch/x86/entry/common.c:264
 entry_SYSCALL_64_fastpath+0x94/0x96
RIP: 0033:0x452a09
RSP: 002b:00007f55a3679ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000071bf80 RCX: 0000000000452a09
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000071bf80
RBP: 000000000071bf80 R08: 00000000000005c4 R09: 000000000071bf58
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000a2f7ff R14: 00007f55a367a9c0 R15: 0000000000000002
Code: 00 00 00 fc ff df 44 89 bd 50 ff ff ff 48 c1 e8 03 4c 01 e8 41 83 e7 01 c6 00 f8 74 4e 49 89 c7 49 83 c4 18 e8 8e 26 0b 00 f3 90 <4c> 89 e2 41 c6 07 04 48 c1 ea 03 42 0f b6 14 2a 84 d2 74 09 80