[....] Starting enhanced syslogd: rsyslogd[ 17.239512] audit: type=1400 audit(1521611204.075:5): avc: denied { syslog } for pid=4083 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: [ 22.327983] audit: type=1400 audit(1521611209.163:6): avc: denied { map } for pid=4223 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 '10.128.0.45' (ECDSA) to the list of known hosts. executing program [ 28.663742] audit: type=1400 audit(1521611215.499:7): avc: denied { map } for pid=4237 comm="syzkaller996059" path="/root/syzkaller996059523" 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 [ 33.759700] kasan: CONFIG_KASAN_INLINE enabled [ 33.764427] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.771812] general protection fault: 0000 [#1] SMP KASAN [ 33.777320] Dumping ftrace buffer: [ 33.780832] (ftrace buffer empty) [ 33.784509] Modules linked in: [ 33.787673] CPU: 1 PID: 4237 Comm: syzkaller996059 Not tainted 4.16.0-rc6+ #271 [ 33.795084] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.804416] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 33.809485] RSP: 0018:ffff8801b090fc78 EFLAGS: 00010206 [ 33.814823] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846006f4 [ 33.822063] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 33.829301] RBP: ffff8801b090fc90 R08: 0000000000000000 R09: 1ffff10036121f0b [ 33.836540] R10: ffff8801b090f820 R11: 0000000000000001 R12: ffff8801b16777d2 [ 33.843778] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b090fd08 [ 33.851020] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000009a51840 [ 33.859221] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 33.865076] CR2: ffffffffff600400 CR3: 00000001b4ad3004 CR4: 00000000001606e0 [ 33.872318] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.879559] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.886829] Call Trace: [ 33.889388] smc_shutdown+0x3ed/0x540 [ 33.893160] SyS_shutdown+0x137/0x290 [ 33.896930] ? SyS_getsockopt+0x340/0x340 [ 33.901049] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 33.906562] ? do_fast_syscall_32+0x156/0xf9f [ 33.911026] ? SyS_getsockopt+0x340/0x340 [ 33.915145] do_fast_syscall_32+0x3ec/0xf9f [ 33.919438] ? do_int80_syscall_32+0x9c0/0x9c0 [ 33.923989] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 33.929513] ? syscall_return_slowpath+0x550/0x550 [ 33.934412] ? syscall_return_slowpath+0x2ac/0x550 [ 33.939312] ? sysret32_from_system_call+0x5/0x3c [ 33.944126] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.948940] entry_SYSENTER_compat+0x70/0x7f [ 33.953317] RIP: 0023:0xf7f30c99 [ 33.956650] RSP: 002b:00000000ffe2dc7c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 33.964326] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 33.971563] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 33.978800] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 33.986041] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 33.993279] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.000527] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 0c 12 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 [ 34.019595] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b090fc78 [ 34.026220] ---[ end trace 4c3089d22dd79864 ]--- [ 34.030976] Kernel panic - not syncing: Fatal exception [ 34.036682] Dumping ftrace buffer: [ 34.040189] (ftrace buffer empty) [ 34.043886] Kernel Offset: disabled [ 34.047487] Rebooting in 86400 seconds..