watchdog: BUG: soft lockup - CPU#1 stuck for 134s! [syz-executor5:9055] Modules linked in: irq event stamp: 320166 hardirqs last enabled at (320165): [] restore_regs_and_return_to_kernel+0x0/0x2b hardirqs last disabled at (320166): [] interrupt_entry+0xb1/0xf0 arch/x86/entry/entry_64.S:624 softirqs last enabled at (122752): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (122677): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (122677): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 1 PID: 9055 Comm: syz-executor5 Not tainted 4.16.0+ #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rep_nop arch/x86/include/asm/processor.h:667 [inline] RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:672 [inline] RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline] RIP: 0010:smp_call_function_single+0x3e0/0x5b0 kernel/smp.c:302 RSP: 0018:ffff8801856464e0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff8801ac9ce080 RBX: ffff8801856465d8 RCX: ffffffff816b56a2 RDX: 0000000000000000 RSI: ffffffff816b564e RDI: 0000000000000005 RBP: ffff880185646640 R08: ffff8801ac9ce080 R09: ffffed003b605aa8 R10: ffffed003b605aa8 R11: ffff8801db02d547 R12: ffffed0030ac8cb0 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000001 FS: 00007f5aba9cc700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000006fe178 CR3: 000000018e1fb000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: smp_call_function_many+0x870/0xa20 kernel/smp.c:434 smp_call_function kernel/smp.c:492 [inline] on_each_cpu+0x46/0x1d0 kernel/smp.c:602 text_poke_bp+0xb9/0x158 arch/x86/kernel/alternative.c:796 __jump_label_transform.isra.0+0x43c/0x890 arch/x86/kernel/jump_label.c:102 arch_jump_label_transform+0x2f/0x40 arch/x86/kernel/jump_label.c:110 __jump_label_update+0x16e/0x1a0 kernel/jump_label.c:375 jump_label_update+0x151/0x2e0 kernel/jump_label.c:760 __static_key_slow_dec_cpuslocked+0xb0/0x200 kernel/jump_label.c:205 __static_key_slow_dec kernel/jump_label.c:215 [inline] static_key_slow_dec+0x63/0xa0 kernel/jump_label.c:229 tracepoint_remove_func kernel/tracepoint.c:252 [inline] tracepoint_probe_unregister+0x704/0x8c0 kernel/tracepoint.c:323 trace_event_reg+0x10c/0x350 kernel/trace/trace_events.c:309 perf_trace_event_unreg.isra.3+0xbb/0x210 kernel/trace/trace_event_perf.c:156 perf_trace_destroy+0xc1/0x100 kernel/trace/trace_event_perf.c:237 tp_perf_event_destroy+0x15/0x20 kernel/events/core.c:8314 _free_event+0x3ff/0x13b0 kernel/events/core.c:4445 put_event+0x48/0x60 kernel/events/core.c:4528 perf_event_release_kernel+0x8bd/0xf90 kernel/events/core.c:4634 perf_release+0x37/0x50 kernel/events/core.c:4644 __fput+0x34d/0x890 fs/file_table.c:209 ____fput+0x15/0x20 fs/file_table.c:243 task_work_run+0x1e4/0x290 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x1aee/0x2730 kernel/exit.c:865 do_group_exit+0x16f/0x430 kernel/exit.c:968 get_signal+0x886/0x1960 kernel/signal.c:2469 do_signal+0x98/0x2040 arch/x86/kernel/signal.c:810 exit_to_usermode_loop+0x28a/0x310 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:265 [inline] do_syscall_64+0x792/0x9d0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x455319 RSP: 002b:00007f5aba9cbce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000072bf80 RCX: 0000000000455319 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000072bf80 RBP: 000000000072bf80 R08: 0000000000000000 R09: 000000000072bf58 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffc1dbc91f R14: 00007f5aba9cc9c0 R15: 0000000000000001 Code: c1 e8 03 4c 01 e8 c6 00 f8 48 89 44 24 28 e8 48 d4 0b 00 45 85 e4 74 6a 48 8b 44 24 28 48 83 c3 18 49 89 c4 e8 22 d3 0b 00 f3 90 <48> 89 d8 41 c6 04 24 04 48 c1 e8 03 42 0f b6 04 28 84 c0 74 08