[....] Starting enhanced syslogd: rsyslogd[?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. [ 19.439857] audit: type=1400 audit(1521030019.621:6): 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.6' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 25.817689] audit: type=1400 audit(1521030025.999:7): avc: denied { map } for pid=4237 comm="syzkaller985525" path="/root/syzkaller985525815" 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 [ 31.200122] kasan: CONFIG_KASAN_INLINE enabled [ 31.204825] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 31.212207] general protection fault: 0000 [#1] SMP KASAN [ 31.217727] Dumping ftrace buffer: [ 31.221240] (ftrace buffer empty) [ 31.225083] Modules linked in: [ 31.228248] CPU: 0 PID: 4237 Comm: syzkaller985525 Not tainted 4.16.0-rc5+ #262 [ 31.235659] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.244988] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 31.250059] RSP: 0018:ffff8801aea9fc78 EFLAGS: 00010206 [ 31.255391] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 31.262653] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 31.269893] RBP: ffff8801aea9fc90 R08: 0000000000000000 R09: 1ffff10035d53f0b [ 31.277130] R10: ffff8801aea9f820 R11: 0000000000000001 R12: ffff8801af43a7d2 [ 31.284371] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801aea9fd08 [ 31.291609] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000092ea840 [ 31.299802] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 31.305653] CR2: ffffffffff600400 CR3: 00000001aedc0003 CR4: 00000000001606f0 [ 31.312893] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.320131] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.327369] Call Trace: [ 31.329929] smc_shutdown+0x3ed/0x540 [ 31.333703] SyS_shutdown+0x137/0x290 [ 31.337474] ? SyS_getsockopt+0x340/0x340 [ 31.341596] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 31.347106] ? do_fast_syscall_32+0x156/0xf9f [ 31.351572] ? SyS_getsockopt+0x340/0x340 [ 31.355691] do_fast_syscall_32+0x3ec/0xf9f [ 31.359986] ? do_int80_syscall_32+0x9c0/0x9c0 [ 31.364540] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 31.370059] ? syscall_return_slowpath+0x550/0x550 [ 31.374960] ? syscall_return_slowpath+0x2ac/0x550 [ 31.379863] ? sysret32_from_system_call+0x5/0x3c [ 31.384675] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.389491] entry_SYSENTER_compat+0x70/0x7f [ 31.393868] RIP: 0023:0xf7f61c99 [ 31.397203] RSP: 002b:00000000ffc34d8c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 31.404881] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 31.412144] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 31.419384] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 31.426623] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 31.433862] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 31.441110] 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 [ 31.460176] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801aea9fc78 [ 31.466779] ---[ end trace 2c805cb954c38bd0 ]--- [ 31.471532] Kernel panic - not syncing: Fatal exception [ 31.477336] Dumping ftrace buffer: [ 31.480850] (ftrace buffer empty) [ 31.484527] Kernel Offset: disabled [ 31.488121] Rebooting in 86400 seconds..