[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[ 62.263006][ T26] audit: type=1800 audit(1562011710.426:25): pid=8672 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0
[ 62.291861][ T26] audit: type=1800 audit(1562011710.426:26): pid=8672 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0
[ 62.319274][ T26] audit: type=1800 audit(1562011710.426:27): pid=8672 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0
[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Debian GNU/Linux 7 syzkaller ttyS0
Warning: Permanently added '10.128.10.32' (ECDSA) to the list of known hosts.
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syzkaller login: [ 102.891967][ C0] WARNING: CPU: 0 PID: 0 at kernel/events/core.c:1835 perf_group_attach+0x3fd/0x4d0
[ 102.901679][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 102.908259][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.2.0-rc3+ #26
[ 102.915434][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 102.925480][ C0] Call Trace:
[ 102.928754][ C0]
[ 102.931608][ C0] dump_stack+0x172/0x1f0
[ 102.936120][ C0] ? perf_group_attach+0x3f0/0x4d0
[ 102.941351][ C0] panic+0x2cb/0x744
[ 102.945368][ C0] ? __warn_printk+0xf3/0xf3
[ 102.950020][ C0] ? perf_group_attach+0x3fd/0x4d0
[ 102.955126][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 102.961421][ C0] ? __warn.cold+0x5/0x4d
[ 102.965891][ C0] ? __warn+0xe8/0x1d0
[ 102.969974][ C0] ? perf_group_attach+0x3fd/0x4d0
[ 102.975276][ C0] __warn.cold+0x20/0x4d
[ 102.979552][ C0] ? perf_group_attach+0x3fd/0x4d0
[ 102.984761][ C0] report_bug+0x263/0x2b0
[ 102.989129][ C0] do_error_trap+0x11b/0x200
[ 102.993974][ C0] do_invalid_op+0x37/0x50
[ 102.998503][ C0] ? perf_group_attach+0x3fd/0x4d0
[ 103.003620][ C0] invalid_op+0x14/0x20
[ 103.007778][ C0] RIP: 0010:perf_group_attach+0x3fd/0x4d0
[ 103.013489][ C0] Code: ff 48 8d 7b 10 48 89 f8 48 c1 e8 03 42 80 3c 28 00 75 57 48 8b 5b 10 48 83 eb 10 49 39 dc 75 d4 e9 20 ff ff ff e8 73 3a eb ff <0f> 0b e9 55 fd ff ff 48 c7 c7 34 c4 80 89 e8 40 e0 23 00 e9 5b fc
[ 103.033442][ C0] RSP: 0018:ffff8880ae809ea8 EFLAGS: 00010006
[ 103.039525][ C0] RAX: ffffffff88a7a100 RBX: ffff8880916963c0 RCX: ffffffff818568e8
[ 103.047501][ C0] RDX: 0000000000010000 RSI: ffffffff81856c0d RDI: ffff8880916965d8
[ 103.055557][ C0] RBP: ffff8880ae809ed8 R08: ffffffff88a7a100 R09: ffffffff89bec008
[ 103.063528][ C0] R10: ffffffff89bec010 R11: 0000000000000001 R12: ffff888090f18bc0
[ 103.071487][ C0] R13: ffffe8ffffc14a08 R14: 0000000000000000 R15: ffff8880ae83a5c8
[ 103.079508][ C0] ? perf_group_attach+0xd8/0x4d0
[ 103.084594][ C0] ? perf_group_attach+0x3fd/0x4d0
[ 103.089741][ C0] ? perf_group_attach+0x3fd/0x4d0
[ 103.094887][ C0] __perf_install_in_context+0x4b5/0x960
[ 103.100517][ C0] ? kvm_clock_read+0x18/0x30
[ 103.105820][ C0] ? __perf_event_enable+0x910/0x910
[ 103.111104][ C0] remote_function+0x129/0x1a0
[ 103.116044][ C0] ? debug_smp_processor_id+0x3c/0x280
[ 103.121756][ C0] flush_smp_call_function_queue+0x147/0x4f0
[ 103.128074][ C0] ? perf_duration_warn+0x40/0x40
[ 103.133227][ C0] generic_smp_call_function_single_interrupt+0x13/0x2b
[ 103.140261][ C0] smp_call_function_single_interrupt+0x9d/0x450
[ 103.146744][ C0] call_function_single_interrupt+0xf/0x20
[ 103.152545][ C0]
[ 103.155476][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 103.160958][ C0] Code: ff ff 48 89 df e8 32 81 8c fa eb 82 e9 07 00 00 00 0f 00 2d 84 24 4b 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 74 24 4b 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 8e f5 41 fa e8 d9
[ 103.180811][ C0] RSP: 0018:ffffffff88a07cf8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff04
[ 103.189242][ C0] RAX: 1ffffffff1164e81 RBX: ffffffff88a7a100 RCX: 0000000000000000
[ 103.197202][ C0] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffffffff88a7a97c
[ 103.205168][ C0] RBP: ffffffff88a07d28 R08: ffffffff88a7a100 R09: 0000000000000000
[ 103.213244][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 103.221202][ C0] R13: ffffffff88b273f8 R14: 0000000000000000 R15: 0000000000000000
[ 103.229438][ C0] ? default_idle+0x4e/0x320
[ 103.234025][ C0] arch_cpu_idle+0xa/0x10
[ 103.238343][ C0] default_idle_call+0x36/0x90
[ 103.243224][ C0] do_idle+0x377/0x560
[ 103.247287][ C0] ? retint_kernel+0x2b/0x2b
[ 103.252006][ C0] ? arch_cpu_idle_exit+0x80/0x80
[ 103.257031][ C0] cpu_startup_entry+0x1b/0x20
[ 103.261902][ C0] rest_init+0x245/0x37b
[ 103.266247][ C0] arch_call_rest_init+0xe/0x1b
[ 103.271093][ C0] start_kernel+0x854/0x893
[ 103.275682][ C0] ? mem_encrypt_init+0xb/0xb
[ 103.280353][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 103.286603][ C0] ? x86_family+0x41/0x50
[ 103.290918][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 103.297154][ C0] x86_64_start_reservations+0x29/0x2b
[ 103.302707][ C0] x86_64_start_kernel+0x77/0x7b
[ 103.308087][ C0] secondary_startup_64+0xa4/0xb0
[ 103.314228][ C0] Kernel Offset: disabled
[ 103.318610][ C0] Rebooting in 86400 seconds..