netlink: 8 bytes leftover after parsing attributes in process `syz-executor3'. watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor5:16536] Modules linked in: irq event stamp: 30496 hardirqs last enabled at (30495): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (30496): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (3330): [] __do_softirq+0x7db/0xb03 kernel/softirq.c:319 softirqs last disabled at (3269): [] invoke_softirq kernel/softirq.c:373 [inline] softirqs last disabled at (3269): [] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 CPU: 1 PID: 16536 Comm: syz-executor5 Not tainted 4.19.0-rc4-next-20180921+ #77 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:check_kcov_mode kernel/kcov.c:67 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x20/0x50 kernel/kcov.c:101 Code: 4c d8 20 4c 89 08 5d c3 66 90 55 48 89 e5 65 48 8b 04 25 40 ee 01 00 65 8b 15 8c 9c 84 7e 81 e2 00 01 1f 00 48 8b 75 08 75 2b <8b> 90 d0 12 00 00 83 fa 02 75 20 48 8b 88 d8 12 00 00 8b 80 d4 12 RSP: 0018:ffff8801bafd6e70 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff8801bdca43c0 RBX: ffff8801bafd6ef8 RCX: ffffffff8170f3a9 RDX: 0000000000000000 RSI: ffffffff8170f358 RDI: 0000000000000005 RBP: ffff8801bafd6e70 R08: ffff8801bdca43c0 R09: ffffed003b585b70 R10: ffffed003b585b70 R11: ffff8801dac2db87 R12: ffffed00375fadec R13: 1ffff100375fadd8 R14: dffffc0000000000 R15: 0000000000000001 FS: 0000000000ced940(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000072c000 CR3: 00000001c62bb000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rep_nop arch/x86/include/asm/processor.h:659 [inline] cpu_relax arch/x86/include/asm/processor.h:664 [inline] csd_lock_wait kernel/smp.c:108 [inline] smp_call_function_single+0x258/0x660 kernel/smp.c:302 smp_call_function_many+0x918/0xae0 kernel/smp.c:434 smp_call_function+0x42/0x80 kernel/smp.c:492 on_each_cpu+0x2f/0x1e0 kernel/smp.c:604 text_poke_bp+0x102/0x1de arch/x86/kernel/alternative.c:804 __jump_label_transform.isra.0+0x478/0x8f0 arch/x86/kernel/jump_label.c:105 arch_jump_label_transform+0x2f/0x40 arch/x86/kernel/jump_label.c:113 __jump_label_update+0x16e/0x1a0 kernel/jump_label.c:380 jump_label_update+0x174/0x320 kernel/jump_label.c:765 __static_key_slow_dec_cpuslocked+0xbd/0x210 kernel/jump_label.c:210 __static_key_slow_dec kernel/jump_label.c:220 [inline] static_key_slow_dec+0x63/0xa0 kernel/jump_label.c:234 tracepoint_remove_func kernel/tracepoint.c:298 [inline] tracepoint_probe_unregister+0x761/0x930 kernel/tracepoint.c:368 trace_event_reg+0x10c/0x350 kernel/trace/trace_events.c:310 perf_trace_event_unreg.isra.3+0xbb/0x220 kernel/trace/trace_event_perf.c:157 perf_trace_destroy+0xc1/0x100 kernel/trace/trace_event_perf.c:238 tp_perf_event_destroy+0x15/0x20 kernel/events/core.c:8328 _free_event+0x414/0x1610 kernel/events/core.c:4440 put_event+0x48/0x60 kernel/events/core.c:4526 perf_event_release_kernel+0x8d4/0xfa0 kernel/events/core.c:4632 perf_release+0x37/0x50 kernel/events/core.c:4642 __fput+0x3bc/0xa70 fs/file_table.c:279 ____fput+0x15/0x20 fs/file_table.c:312 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411151 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffd7268d410 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000411151 RDX: 0000000000000000 RSI: 0000000000731178 RDI: 0000000000000007 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffffffffffff R10: 000000000072bf00 R11: 0000000000000293 R12: 0000000000000006 R13: 000000000005d79e R14: 0000000000000015 R15: badc0ffeebadface Sending NMI from CPU 1 to CPUs 0: