[....] Starting enhanced syslogd: rsyslogd[ 15.376944] audit: type=1400 audit(1520708522.223:5): avc: denied { syslog } for pid=3956 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 17.919972] audit: type=1400 audit(1520708524.766:6): avc: denied { map } for pid=4095 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 '10.128.0.29' (ECDSA) to the list of known hosts. executing program [ 24.231211] audit: type=1400 audit(1520708531.078:7): avc: denied { map } for pid=4109 comm="syzkaller951361" path="/root/syzkaller951361486" 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 [ 29.664115] kasan: CONFIG_KASAN_INLINE enabled [ 29.668804] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.676177] general protection fault: 0000 [#1] SMP KASAN [ 29.681681] Dumping ftrace buffer: [ 29.685185] (ftrace buffer empty) [ 29.688862] Modules linked in: [ 29.692029] CPU: 1 PID: 4109 Comm: syzkaller951361 Not tainted 4.16.0-rc4+ #348 [ 29.699441] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.708768] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 29.713838] RSP: 0018:ffff8801b850fcc8 EFLAGS: 00010206 [ 29.719169] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fd6f4 [ 29.726406] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 29.733645] RBP: ffff8801b850fce0 R08: 0000000000000000 R09: 1ffff100370a1f15 [ 29.740885] R10: ffff8801b850f870 R11: 0000000000000001 R12: ffff8801cab647d2 [ 29.748125] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b850fd58 [ 29.755363] FS: 000000000070d880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 29.763556] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.769405] CR2: 000000000180fde0 CR3: 00000001ca110006 CR4: 00000000001606e0 [ 29.776644] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.783882] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.791127] Call Trace: [ 29.793694] smc_shutdown+0x3ed/0x540 [ 29.797465] SyS_shutdown+0x137/0x290 [ 29.801232] ? SyS_getsockopt+0x340/0x340 [ 29.805351] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 29.810859] ? do_syscall_64+0xb7/0x940 [ 29.814799] ? SyS_getsockopt+0x340/0x340 [ 29.818913] do_syscall_64+0x281/0x940 [ 29.822771] ? __do_page_fault+0xc90/0xc90 [ 29.826979] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 29.831706] ? syscall_return_slowpath+0x550/0x550 [ 29.836601] ? syscall_return_slowpath+0x2ac/0x550 [ 29.841498] ? prepare_exit_to_usermode+0x350/0x350 [ 29.846482] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 29.851818] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.856634] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 29.861789] RIP: 0033:0x43fcb9 [ 29.864949] RSP: 002b:00007ffc668ca0d8 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 29.872622] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 29.879952] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 29.887189] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 29.894430] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 29.901671] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 29.908918] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 5c 2f 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 [ 29.927998] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b850fcc8 [ 29.934612] ---[ end trace 8a9d3db9a40e4379 ]--- [ 29.939347] Kernel panic - not syncing: Fatal exception [ 29.945071] Dumping ftrace buffer: [ 29.948579] (ftrace buffer empty) [ 29.952259] Kernel Offset: disabled [ 29.955852] Rebooting in 86400 seconds..