[....] Starting enhanced syslogd: rsyslogd[ 16.812375] audit: type=1400 audit(1520575480.696:5): avc: denied { syslog } for pid=4082 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 33.699004] audit: type=1400 audit(1520575497.582:6): avc: denied { map } for pid=4224 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.10.20' (ECDSA) to the list of known hosts. executing program [ 39.807556] audit: type=1400 audit(1520575503.691:7): avc: denied { map } for pid=4237 comm="syzkaller029445" path="/root/syzkaller029445054" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 45.024113] kasan: CONFIG_KASAN_INLINE enabled [ 45.028790] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 45.036159] general protection fault: 0000 [#1] SMP KASAN [ 45.041667] Dumping ftrace buffer: [ 45.045174] (ftrace buffer empty) [ 45.048852] Modules linked in: [ 45.052017] CPU: 1 PID: 4237 Comm: syzkaller029445 Not tainted 4.16.0-rc4+ #256 [ 45.059429] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.068756] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 45.073823] RSP: 0018:ffff8801b623fc78 EFLAGS: 00010206 [ 45.079156] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fc6f4 [ 45.086394] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 45.093634] RBP: ffff8801b623fc90 R08: 0000000000000000 R09: 1ffff10036c47f0b [ 45.100873] R10: ffff8801b623f820 R11: 0000000000000001 R12: ffff8801a8a887d2 [ 45.108109] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b623fd08 [ 45.115351] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:000000000825f840 [ 45.123547] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 45.129397] CR2: 000055fdc37fb100 CR3: 00000001b03ef006 CR4: 00000000001606e0 [ 45.136644] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.143881] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.151117] Call Trace: [ 45.153679] smc_shutdown+0x3ed/0x540 [ 45.157453] SyS_shutdown+0x137/0x290 [ 45.161221] ? SyS_getsockopt+0x340/0x340 [ 45.165340] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 45.170848] ? do_fast_syscall_32+0x156/0xf9f [ 45.175313] ? SyS_getsockopt+0x340/0x340 [ 45.179428] do_fast_syscall_32+0x3ec/0xf9f [ 45.183718] ? do_int80_syscall_32+0x9c0/0x9c0 [ 45.188269] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 45.192995] ? syscall_return_slowpath+0x550/0x550 [ 45.197891] ? syscall_return_slowpath+0x2ac/0x550 [ 45.202790] ? prepare_exit_to_usermode+0x350/0x350 [ 45.207776] ? sysret32_from_system_call+0x5/0x3c [ 45.212586] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 45.217401] entry_SYSENTER_compat+0x70/0x7f [ 45.221784] RIP: 0023:0xf7f14c99 [ 45.225117] RSP: 002b:00000000ffba69dc EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 45.232793] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 45.240031] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 45.247267] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 45.254594] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 45.261832] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 45.269088] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 1c 3f 11 fd 48 8d 7b 28 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 32 4c 8b 63 28 48 b8 00 00 00 00 00 fc ff df 49 [ 45.288154] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b623fc78 [ 45.294766] ---[ end trace 2cb1628e0dce1847 ]--- [ 45.299509] Kernel panic - not syncing: Fatal exception [ 45.305175] Dumping ftrace buffer: [ 45.308681] (ftrace buffer empty) [ 45.312362] Kernel Offset: disabled [ 45.315958] Rebooting in 86400 seconds..