[....] Starting enhanced syslogd: rsyslogd[ 17.141846] audit: type=1400 audit(1521193079.944:5): avc: denied { syslog } for pid=4037 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: [ 23.468594] audit: type=1400 audit(1521193086.271:6): avc: denied { map } for pid=4177 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 '10.128.0.58' (ECDSA) to the list of known hosts. executing program [ 29.813572] audit: type=1400 audit(1521193092.616:7): avc: denied { map } for pid=4191 comm="syzkaller488075" path="/root/syzkaller488075079" 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 [ 35.296171] kasan: CONFIG_KASAN_INLINE enabled [ 35.300912] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.308294] general protection fault: 0000 [#1] SMP KASAN [ 35.313806] Dumping ftrace buffer: [ 35.317317] (ftrace buffer empty) [ 35.321008] Modules linked in: [ 35.324182] CPU: 1 PID: 4191 Comm: syzkaller488075 Not tainted 4.16.0-rc5+ #355 [ 35.331603] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.340937] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 35.346010] RSP: 0018:ffff8801acd3fcc8 EFLAGS: 00010206 [ 35.351344] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 35.358581] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 35.365907] RBP: ffff8801acd3fce0 R08: 0000000000000000 R09: 1ffff100359a7f15 [ 35.373148] R10: ffff8801acd3f870 R11: 0000000000000001 R12: ffff8801b927d7d2 [ 35.380386] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801acd3fd58 [ 35.387627] FS: 0000000001591880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 35.395819] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.401667] CR2: 00007f4957751000 CR3: 00000001b9249001 CR4: 00000000001606e0 [ 35.408909] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.416150] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.423385] Call Trace: [ 35.425945] smc_shutdown+0x3ed/0x540 [ 35.429720] SyS_shutdown+0x137/0x290 [ 35.433490] ? SyS_getsockopt+0x340/0x340 [ 35.437610] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 35.443117] ? do_syscall_64+0xb7/0x940 [ 35.447059] ? SyS_getsockopt+0x340/0x340 [ 35.451176] do_syscall_64+0x281/0x940 [ 35.455297] ? __do_page_fault+0xc90/0xc90 [ 35.459502] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.464225] ? syscall_return_slowpath+0x550/0x550 [ 35.469124] ? syscall_return_slowpath+0x2ac/0x550 [ 35.474026] ? prepare_exit_to_usermode+0x350/0x350 [ 35.479019] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 35.484358] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.489171] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 35.494329] RIP: 0033:0x43fce9 [ 35.497489] RSP: 002b:00007ffe5aff6168 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 35.505165] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fce9 [ 35.512401] RDX: 000000000043fce9 RSI: 0000000000000000 RDI: 0000000000000003 [ 35.519638] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 35.526874] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401610 [ 35.534110] R13: 00000000004016a0 R14: 0000000000000000 R15: 0000000000000000 [ 35.541353] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ac 20 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 [ 35.560418] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801acd3fcc8 [ 35.567043] ---[ end trace cd17505892e9548b ]--- [ 35.571789] Kernel panic - not syncing: Fatal exception [ 35.577514] Dumping ftrace buffer: [ 35.581032] (ftrace buffer empty) [ 35.584710] Kernel Offset: disabled [ 35.588304] Rebooting in 86400 seconds..