[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 44.555469][ T26] audit: type=1800 audit(1561017840.303:25): pid=7977 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 44.588237][ T26] audit: type=1800 audit(1561017840.303:26): pid=7977 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 44.621941][ T26] audit: type=1800 audit(1561017840.303:27): pid=7977 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.38' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 53.407449][ T8130] IPVS: ftp: loaded support on port[0] = 21 [ 53.519065][ T8131] WARNING: CPU: 0 PID: 8131 at kernel/events/core.c:1835 add_event_to_ctx+0x1351/0x1630 [ 53.528870][ T8131] Kernel panic - not syncing: panic_on_warn set ... [ 53.535472][ T8131] CPU: 0 PID: 8131 Comm: syz-executor982 Not tainted 5.2.0-rc5+ #4 [ 53.543351][ T8131] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.553528][ T8131] Call Trace: [ 53.556843][ T8131] dump_stack+0x1d8/0x2f8 [ 53.561192][ T8131] panic+0x28a/0x7c9 [ 53.565087][ T8131] ? trace_lock_acquire+0x190/0x190 [ 53.570279][ T8131] ? __warn+0x126/0x220 [ 53.574438][ T8131] ? nmi_panic+0x97/0x97 [ 53.578674][ T8131] ? add_event_to_ctx+0x1351/0x1630 [ 53.583867][ T8131] ? is_valid_bugaddr+0x81/0x100 [ 53.588795][ T8131] __warn+0x216/0x220 [ 53.592774][ T8131] ? add_event_to_ctx+0x1351/0x1630 [ 53.597971][ T8131] report_bug+0x190/0x290 [ 53.602310][ T8131] ? add_event_to_ctx+0x1351/0x1630 [ 53.607512][ T8131] do_error_trap+0xd7/0x450 [ 53.612013][ T8131] do_invalid_op+0x36/0x40 [ 53.616505][ T8131] ? add_event_to_ctx+0x1351/0x1630 [ 53.621697][ T8131] invalid_op+0x14/0x20 [ 53.625848][ T8131] RIP: 0010:add_event_to_ctx+0x1351/0x1630 [ 53.631643][ T8131] Code: ff e8 d3 19 e6 ff 0f 0b e9 88 ed ff ff e8 c7 19 e6 ff 0f 0b e9 42 ed ff ff e8 bb 19 e6 ff 0f 0b e9 4f f8 ff ff e8 af 19 e6 ff <0f> 0b e9 d5 f8 ff ff 48 c7 c1 a0 31 dd 88 80 e1 07 80 c1 03 38 c1 [ 53.651347][ T8131] RSP: 0018:ffff888094cdf900 EFLAGS: 00010093 [ 53.657404][ T8131] RAX: ffffffff818f9841 RBX: ffff888085d7c418 RCX: ffff888099a064c0 [ 53.665374][ T8131] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 53.673356][ T8131] RBP: ffff888094cdf988 R08: ffffffff818f90aa R09: ffffed101299bf21 [ 53.681324][ T8131] R10: ffffed101299bf20 R11: 1ffff1101299bf20 R12: dffffc0000000000 [ 53.689285][ T8131] R13: ffff888085d7c200 R14: ffffe8ffffc15758 R15: ffff888085d7ca80 [ 53.697260][ T8131] ? add_event_to_ctx+0xbba/0x1630 [ 53.702365][ T8131] ? add_event_to_ctx+0x1351/0x1630 [ 53.707570][ T8131] __perf_install_in_context+0x54a/0x7e0 [ 53.713203][ T8131] ? do_raw_spin_lock+0x143/0x3a0 [ 53.718259][ T8131] ? alloc_perf_context+0x280/0x280 [ 53.723474][ T8131] remote_function+0xeb/0x170 [ 53.728150][ T8131] ? event_function+0x3e0/0x3e0 [ 53.733005][ T8131] generic_exec_single+0x114/0x420 [ 53.738108][ T8131] smp_call_function_single+0x1a5/0x410 [ 53.743645][ T8131] ? event_function+0x3e0/0x3e0 [ 53.748487][ T8131] ? generic_smp_call_function_single_interrupt+0x20/0x20 [ 53.755584][ T8131] ? __mutex_lock_common+0x1c6d/0x2fc0 [ 53.761037][ T8131] perf_install_in_context+0x26b/0x5a0 [ 53.766484][ T8131] ? mutex_lock_io_nested+0x60/0x60 [ 53.771696][ T8131] ? find_get_context+0x770/0x770 [ 53.776740][ T8131] ? find_get_context+0x639/0x770 [ 53.781762][ T8131] ? alloc_perf_context+0x280/0x280 [ 53.786955][ T8131] __se_sys_perf_event_open+0x224a/0x3270 [ 53.792673][ T8131] ? __x64_sys_perf_event_open+0xd0/0xd0 [ 53.798302][ T8131] ? prepare_exit_to_usermode+0x1e1/0x4f0 [ 53.804032][ T8131] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 53.809480][ T8131] ? trace_irq_disable_rcuidle+0x23/0x1c0 [ 53.815187][ T8131] __x64_sys_perf_event_open+0xbf/0xd0 [ 53.820638][ T8131] do_syscall_64+0xfe/0x140 [ 53.825135][ T8131] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.831022][ T8131] RIP: 0033:0x446b69 [ 53.834905][ T8131] Code: e8 8c 19 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b 0c fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 53.854516][ T8131] RSP: 002b:00007f2b0c7bddb8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a [ 53.862919][ T8131] RAX: ffffffffffffffda RBX: 00000000006dcc28 RCX: 0000000000446b69 [ 53.870881][ T8131] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000020000000 [ 53.878954][ T8131] RBP: 00000000006dcc20 R08: 0000000000000000 R09: 0000000000000000 [ 53.886915][ T8131] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000006dcc2c [ 53.894903][ T8131] R13: 00007fff27b1f69f R14: 00007f2b0c7be9c0 R15: 0000000000000000 [ 53.904044][ T8131] Kernel Offset: disabled [ 53.908409][ T8131] Rebooting in 86400 seconds..