[ 40.800542] audit: type=1800 audit(1550283776.995:29): pid=7841 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 40.837483] audit: type=1800 audit(1550283776.995:30): pid=7841 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.56' (ECDSA) to the list of known hosts. syzkaller login: [ 49.111796] kauditd_printk_skb: 5 callbacks suppressed [ 49.111830] audit: type=1400 audit(1550283785.305:36): avc: denied { map } for pid=8029 comm="syz-executor623" path="/root/syz-executor623088480" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 49.161526] IPVS: ftp: loaded support on port[0] = 21 [ 49.184805] IPVS: ftp: loaded support on port[0] = 21 [ 49.194652] IPVS: ftp: loaded support on port[0] = 21 [ 49.209785] IPVS: ftp: loaded support on port[0] = 21 [ 49.219204] IPVS: ftp: loaded support on port[0] = 21 [ 49.229775] IPVS: ftp: loaded support on port[0] = 21 [ 49.245040] audit: type=1400 audit(1550283785.435:37): avc: denied { associate } for pid=8037 comm="syz-executor623" name="syz5" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 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 [ 52.337563] WARNING: CPU: 0 PID: 8298 at kernel/events/core.c:1833 perf_group_attach+0x3fd/0x4d0 [ 52.346643] Kernel panic - not syncing: panic_on_warn set ... [ 52.352533] CPU: 0 PID: 8298 Comm: syz-executor623 Not tainted 5.0.0-rc6+ #73 [ 52.359792] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.369138] Call Trace: [ 52.371733] dump_stack+0x172/0x1f0 [ 52.375364] ? perf_group_attach+0x340/0x4d0 [ 52.379773] panic+0x2cb/0x65c [ 52.382971] ? __warn_printk+0xf3/0xf3 [ 52.386864] ? perf_group_attach+0x3fd/0x4d0 [ 52.391279] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.396819] ? __warn.cold+0x5/0x45 [ 52.400447] ? __warn+0xe8/0x1d0 [ 52.403816] ? perf_group_attach+0x3fd/0x4d0 [ 52.408222] __warn.cold+0x20/0x45 [ 52.411765] ? perf_group_attach+0x3fd/0x4d0 [ 52.416214] report_bug+0x263/0x2b0 [ 52.419853] do_error_trap+0x11b/0x200 [ 52.423767] do_invalid_op+0x37/0x50 [ 52.427496] ? perf_group_attach+0x3fd/0x4d0 [ 52.431958] invalid_op+0x14/0x20 [ 52.435422] RIP: 0010:perf_group_attach+0x3fd/0x4d0 [ 52.440436] 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 53 56 ec ff <0f> 0b e9 55 fd ff ff 48 c7 c7 f8 a7 5c 89 e8 60 54 23 00 e9 5b fc [ 52.459336] RSP: 0018:ffff8880801f7a90 EFLAGS: 00010093 [ 52.464696] RAX: ffff8880809283c0 RBX: ffff888093d51680 RCX: ffffffff81838798 [ 52.471964] RDX: 0000000000000000 RSI: ffffffff81838abd RDI: ffff888093d51898 [ 52.479226] RBP: ffff8880801f7ac0 R08: ffff8880809283c0 R09: ffffffff89997008 [ 52.486487] R10: ffffffff89997010 R11: 0000000000000001 R12: ffff888093b38500 [ 52.493751] R13: ffffe8ffffc15580 R14: 0000000000000000 R15: ffff8880ae832048 [ 52.501033] ? perf_group_attach+0xd8/0x4d0 [ 52.505351] ? perf_group_attach+0x3fd/0x4d0 [ 52.509765] __perf_install_in_context+0x4b5/0x960 [ 52.514691] ? retint_kernel+0x2d/0x2d [ 52.518573] ? __perf_event_enable+0x920/0x920 [ 52.523162] ? perf_duration_warn+0x40/0x40 [ 52.527484] remote_function+0x12b/0x1a0 [ 52.531551] generic_exec_single+0x284/0x4b0 [ 52.535983] smp_call_function_single+0x12d/0x420 [ 52.540825] ? perf_duration_warn+0x40/0x40 [ 52.545148] ? generic_exec_single+0x4b0/0x4b0 [ 52.549740] perf_install_in_context+0x369/0x3d0 [ 52.554500] ? list_add_event+0xcd0/0xcd0 [ 52.558645] ? __perf_event_enable+0x920/0x920 [ 52.563230] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 52.568766] __do_sys_perf_event_open+0x18fa/0x2690 [ 52.573791] ? perf_event_set_output+0x4e0/0x4e0 [ 52.578558] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 52.583311] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 52.588066] ? do_syscall_64+0x26/0x610 [ 52.592038] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.597396] ? do_syscall_64+0x26/0x610 [ 52.601373] __x64_sys_perf_event_open+0xbe/0x150 [ 52.606219] do_syscall_64+0x103/0x610 [ 52.610110] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.615295] RIP: 0033:0x447379 [ 52.618490] 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 [ 52.637394] RSP: 002b:00007fed833bbdb8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a [ 52.645103] RAX: ffffffffffffffda RBX: 00000000006dcc28 RCX: 0000000000447379 [ 52.652372] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000020000000 [ 52.659637] RBP: 00000000006dcc20 R08: 0000000000000000 R09: 0000000000000000 [ 52.666902] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000006dcc2c [ 52.674173] R13: 00007ffd1c55a86f R14: 00007fed833bc9c0 R15: 20c49ba5e353f7cf [ 52.682573] Kernel Offset: disabled [ 52.686247] Rebooting in 86400 seconds..