[....] Starting enhanced syslogd: rsyslogd[ 17.472680] audit: type=1400 audit(1521159788.764:5): avc: denied { syslog } for pid=4093 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: [ 23.026339] audit: type=1400 audit(1521159794.318:6): avc: denied { map } for pid=4234 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 [ 29.316846] audit: type=1400 audit(1521159800.608:7): avc: denied { map } for pid=4248 comm="syzkaller919006" path="/root/syzkaller919006763" 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 [ 34.783170] kasan: CONFIG_KASAN_INLINE enabled [ 34.787944] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.795599] general protection fault: 0000 [#1] SMP KASAN [ 34.801120] Dumping ftrace buffer: [ 34.804629] (ftrace buffer empty) [ 34.808307] Modules linked in: [ 34.811470] CPU: 0 PID: 4248 Comm: syzkaller919006 Not tainted 4.16.0-rc5+ #265 [ 34.818883] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.828213] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.833285] RSP: 0018:ffff8801b0a17c78 EFLAGS: 00010206 [ 34.838620] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 34.845862] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.853102] RBP: ffff8801b0a17c90 R08: 0000000000000000 R09: 1ffff10036142f0b [ 34.860340] R10: ffff8801b0a17820 R11: 0000000000000001 R12: ffff8801d43da7d2 [ 34.867578] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b0a17d08 [ 34.874818] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000009f1b840 [ 34.883015] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 34.888871] CR2: 0000000000ea0a70 CR3: 00000001b11e8003 CR4: 00000000001606f0 [ 34.896119] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.903365] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.910607] Call Trace: [ 34.913169] smc_shutdown+0x3ed/0x540 [ 34.916955] SyS_shutdown+0x137/0x290 [ 34.920740] ? SyS_getsockopt+0x340/0x340 [ 34.924862] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.930366] ? do_fast_syscall_32+0x156/0xf9f [ 34.934832] ? SyS_getsockopt+0x340/0x340 [ 34.938952] do_fast_syscall_32+0x3ec/0xf9f [ 34.943249] ? do_int80_syscall_32+0x9c0/0x9c0 [ 34.947798] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.952522] ? syscall_return_slowpath+0x550/0x550 [ 34.957418] ? syscall_return_slowpath+0x2ac/0x550 [ 34.962315] ? prepare_exit_to_usermode+0x350/0x350 [ 34.967310] ? sysret32_from_system_call+0x5/0x3c [ 34.972122] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.976937] entry_SYSENTER_compat+0x70/0x7f [ 34.981314] RIP: 0023:0xf7f3ec99 [ 34.984646] RSP: 002b:00000000ffb842ec EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 34.992321] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 34.999559] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 35.006795] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 35.014036] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 35.021274] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 35.028520] 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 [ 35.047595] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b0a17c78 [ 35.054236] ---[ end trace 6ebe7cdd23dba430 ]--- [ 35.058986] Kernel panic - not syncing: Fatal exception [ 35.064657] Dumping ftrace buffer: [ 35.068167] (ftrace buffer empty) [ 35.071846] Kernel Offset: disabled [ 35.075445] Rebooting in 86400 seconds..