[....] Starting enhanced syslogd: rsyslogd[ 16.771556] audit: type=1400 audit(1521818283.956:5): avc: denied { syslog } for pid=4034 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: [ 22.331404] audit: type=1400 audit(1521818289.516:6): avc: denied { map } for pid=4175 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 '10.128.0.15' (ECDSA) to the list of known hosts. executing program [ 28.656389] audit: type=1400 audit(1521818295.841:7): avc: denied { map } for pid=4189 comm="syzkaller401939" path="/root/syzkaller401939605" 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 [ 28.659883] kasan: CONFIG_KASAN_INLINE enabled [ 28.687241] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.694617] general protection fault: 0000 [#1] SMP KASAN [ 28.700138] Dumping ftrace buffer: [ 28.703647] (ftrace buffer empty) [ 28.707330] Modules linked in: [ 28.710496] CPU: 0 PID: 4189 Comm: syzkaller401939 Not tainted 4.16.0-rc6+ #273 [ 28.717910] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.727260] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 28.732330] RSP: 0018:ffff8801bbc97c78 EFLAGS: 00010206 [ 28.737664] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846016f4 [ 28.744910] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 28.752150] RBP: ffff8801bbc97c90 R08: 0000000000000000 R09: 1ffff10037792f29 [ 28.759389] R10: ffff8801bbc97910 R11: 0000000000000001 R12: ffff8801bbd9e7d2 [ 28.766630] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801bbc97d08 [ 28.773870] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000095ff840 [ 28.782071] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 28.787932] CR2: 0000558db748c0f0 CR3: 00000001bbe00004 CR4: 00000000001606f0 [ 28.795184] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.802432] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.809671] Call Trace: [ 28.812237] smc_shutdown+0x3ed/0x540 [ 28.816016] SyS_shutdown+0x137/0x290 [ 28.819799] ? SyS_getsockopt+0x340/0x340 [ 28.823924] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 28.829434] ? do_fast_syscall_32+0x156/0xf9f [ 28.833910] ? SyS_getsockopt+0x340/0x340 [ 28.838033] do_fast_syscall_32+0x3ec/0xf9f [ 28.842336] ? do_int80_syscall_32+0x9c0/0x9c0 [ 28.846891] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 28.852406] ? syscall_return_slowpath+0x550/0x550 [ 28.857321] ? syscall_return_slowpath+0x2ac/0x550 [ 28.862224] ? sysret32_from_system_call+0x5/0x3c [ 28.867041] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.871875] entry_SYSENTER_compat+0x70/0x7f [ 28.876253] RIP: 0023:0xf7f0ec99 [ 28.879584] RSP: 002b:00000000ffef724c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 28.887271] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 28.894519] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 28.901758] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 28.909003] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 28.916253] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 28.923516] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 7c 05 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 [ 28.943122] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801bbc97c78 [ 28.949753] ---[ end trace 95d59e5bd717d9a4 ]--- [ 28.954528] Kernel panic - not syncing: Fatal exception [ 28.960320] Dumping ftrace buffer: [ 28.963839] (ftrace buffer empty) [ 28.967521] Kernel Offset: disabled [ 28.971117] Rebooting in 86400 seconds..