[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 44.879924][ T26] audit: type=1800 audit(1554957556.115:25): pid=7732 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 44.909008][ T26] audit: type=1800 audit(1554957556.115:26): pid=7732 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 44.940026][ T26] audit: type=1800 audit(1554957556.115:27): pid=7732 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[ 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 '10.128.0.76' (ECDSA) to the list of known hosts. syzkaller login: [ 56.316566][ T7895] IPVS: ftp: loaded support on port[0] = 21 [ 56.316573][ T7897] IPVS: ftp: loaded support on port[0] = 21 [ 56.335969][ T7892] IPVS: ftp: loaded support on port[0] = 21 [ 56.336396][ T7894] IPVS: ftp: loaded support on port[0] = 21 [ 56.346900][ T7893] IPVS: ftp: loaded support on port[0] = 21 [ 56.350838][ T7896] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.299838][ T8319] WARNING: CPU: 0 PID: 8319 at kernel/events/core.c:1835 perf_group_attach+0x3fd/0x4d0 [ 61.309700][ T8319] Kernel panic - not syncing: panic_on_warn set ... [ 61.316306][ T8319] CPU: 0 PID: 8319 Comm: syz-executor433 Not tainted 5.1.0-rc2+ #81 [ 61.324473][ T8319] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.334538][ T8319] Call Trace: [ 61.337872][ T8319] dump_stack+0x172/0x1f0 [ 61.342203][ T8319] ? perf_group_attach+0x3b0/0x4d0 [ 61.347331][ T8319] panic+0x2cb/0x65c [ 61.351227][ T8319] ? __warn_printk+0xf3/0xf3 [ 61.355824][ T8319] ? perf_group_attach+0x3fd/0x4d0 [ 61.360947][ T8319] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.367234][ T8319] ? __warn.cold+0x5/0x45 [ 61.371560][ T8319] ? __warn+0xe8/0x1d0 [ 61.375623][ T8319] ? perf_group_attach+0x3fd/0x4d0 [ 61.380730][ T8319] __warn.cold+0x20/0x45 [ 61.384978][ T8319] ? perf_group_attach+0x3fd/0x4d0 [ 61.390096][ T8319] report_bug+0x263/0x2b0 [ 61.394457][ T8319] do_error_trap+0x11b/0x200 [ 61.399070][ T8319] do_invalid_op+0x37/0x50 [ 61.403488][ T8319] ? perf_group_attach+0x3fd/0x4d0 [ 61.408620][ T8319] invalid_op+0x14/0x20 [ 61.412786][ T8319] RIP: 0010:perf_group_attach+0x3fd/0x4d0 [ 61.418511][ T8319] 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 33 7f eb ff <0f> 0b e9 55 fd ff ff 48 c7 c7 d8 a5 5e 89 e8 80 b6 23 00 e9 5b fc [ 61.438120][ T8319] RSP: 0018:ffff8880887cfa90 EFLAGS: 00010093 [ 61.444197][ T8319] RAX: ffff8880a7c98380 RBX: ffff8880a8f07640 RCX: ffffffff8184ef28 [ 61.452174][ T8319] RDX: 0000000000000000 RSI: ffffffff8184f24d RDI: ffff8880a8f07858 [ 61.460149][ T8319] RBP: ffff8880887cfac0 R08: ffff8880a7c98380 R09: ffffffff899bf008 [ 61.468131][ T8319] R10: ffffffff899bf010 R11: 0000000000000001 R12: ffff88808c0d15c0 [ 61.476118][ T8319] R13: ffffe8ffffc13780 R14: 0000000000000000 R15: ffff8880ae832048 [ 61.484136][ T8319] ? perf_group_attach+0xd8/0x4d0 [ 61.489188][ T8319] ? perf_group_attach+0x3fd/0x4d0 [ 61.494326][ T8319] __perf_install_in_context+0x4b5/0x960 [ 61.499976][ T8319] ? __perf_event_enable+0x920/0x920 [ 61.505291][ T8319] ? perf_duration_warn+0x40/0x40 [ 61.510326][ T8319] remote_function+0x12b/0x1a0 [ 61.515111][ T8319] generic_exec_single+0x284/0x4b0 [ 61.520240][ T8319] smp_call_function_single+0x12d/0x420 [ 61.525794][ T8319] ? _raw_spin_unlock+0x2d/0x50 [ 61.530654][ T8319] ? perf_duration_warn+0x40/0x40 [ 61.535693][ T8319] ? generic_exec_single+0x4b0/0x4b0 [ 61.540992][ T8319] ? __do_sys_perf_event_open+0x1a5b/0x24e0 [ 61.546933][ T8319] perf_install_in_context+0x369/0x3d0 [ 61.552414][ T8319] ? list_add_event+0xcd0/0xcd0 [ 61.557308][ T8319] ? __perf_event_enable+0x920/0x920 [ 61.562610][ T8319] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 61.568873][ T8319] __do_sys_perf_event_open+0x1858/0x24e0 [ 61.574622][ T8319] ? perf_event_set_output+0x4e0/0x4e0 [ 61.580128][ T8319] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 61.585612][ T8319] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 61.591084][ T8319] ? do_syscall_64+0x26/0x610 [ 61.595770][ T8319] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 61.601846][ T8319] ? do_syscall_64+0x26/0x610 [ 61.606542][ T8319] __x64_sys_perf_event_open+0xbe/0x150 [ 61.612109][ T8319] do_syscall_64+0x103/0x610 [ 61.616720][ T8319] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 61.622639][ T8319] RIP: 0033:0x4474c9 [ 61.626545][ T8319] Code: e8 3c e6 ff ff 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 ab 06 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 61.646156][ T8319] RSP: 002b:00007fa3f2633db8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a [ 61.654599][ T8319] RAX: ffffffffffffffda RBX: 00000000006ddc28 RCX: 00000000004474c9 [ 61.662583][ T8319] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000020000000 [ 61.670575][ T8319] RBP: 00000000006ddc20 R08: 0000000000000000 R09: 0000000000000000 [ 61.678557][ T8319] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000006ddc2c [ 61.686558][ T8319] R13: 00007ffe09dbe49f R14: 00007fa3f26349c0 R15: 20c49ba5e353f7cf [ 61.695517][ T8319] Kernel Offset: disabled [ 61.699939][ T8319] Rebooting in 86400 seconds..