[....] Starting enhanced syslogd: rsyslogd[ 17.173464] audit: type=1400 audit(1521075806.899:5): avc: denied { syslog } for pid=4071 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: [ 22.895812] audit: type=1400 audit(1521075812.621:6): avc: denied { map } for pid=4212 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 '10.128.10.13' (ECDSA) to the list of known hosts. executing program [ 46.578131] audit: type=1400 audit(1521075836.303:7): avc: denied { map } for pid=4228 comm="syzkaller155524" path="/root/syzkaller155524254" 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 [ 51.679517] kasan: CONFIG_KASAN_INLINE enabled [ 51.684214] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 51.691771] general protection fault: 0000 [#1] SMP KASAN [ 51.697285] Dumping ftrace buffer: [ 51.700794] (ftrace buffer empty) [ 51.704486] Modules linked in: [ 51.707651] CPU: 0 PID: 4228 Comm: syzkaller155524 Not tainted 4.16.0-rc5+ #263 [ 51.715069] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.724399] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 51.729466] RSP: 0018:ffff8801b12cfc78 EFLAGS: 00010206 [ 51.734796] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fe6f4 [ 51.742033] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 51.749270] RBP: ffff8801b12cfc90 R08: 0000000000000000 R09: 1ffff10036259f0b [ 51.756507] R10: ffff8801b12cf820 R11: 0000000000000001 R12: ffff8801b1d5a7d2 [ 51.763748] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b12cfd08 [ 51.770997] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000008cdd840 [ 51.779192] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 51.785040] CR2: ffffffffff600400 CR3: 00000001b10b8001 CR4: 00000000001606f0 [ 51.792279] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.799518] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.806761] Call Trace: [ 51.809321] smc_shutdown+0x3ed/0x540 [ 51.813094] SyS_shutdown+0x137/0x290 [ 51.816863] ? SyS_getsockopt+0x340/0x340 [ 51.820994] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 51.826501] ? do_fast_syscall_32+0x156/0xf9f [ 51.830969] ? SyS_getsockopt+0x340/0x340 [ 51.835098] do_fast_syscall_32+0x3ec/0xf9f [ 51.839394] ? do_int80_syscall_32+0x9c0/0x9c0 [ 51.843949] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 51.848673] ? syscall_return_slowpath+0x550/0x550 [ 51.853573] ? syscall_return_slowpath+0x2ac/0x550 [ 51.858475] ? prepare_exit_to_usermode+0x350/0x350 [ 51.863460] ? sysret32_from_system_call+0x5/0x3c [ 51.868369] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.873187] entry_SYSENTER_compat+0x70/0x7f [ 51.877573] RIP: 0023:0xf7f85c99 [ 51.880907] RSP: 002b:00000000ffe8ee6c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 51.888584] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 51.895838] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 51.903085] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 51.910332] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 51.917573] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 51.924822] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ac 30 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 [ 51.943895] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b12cfc78 [ 51.950539] ---[ end trace 829904e73c943a99 ]--- [ 51.955293] Kernel panic - not syncing: Fatal exception [ 51.961034] Dumping ftrace buffer: [ 51.964556] (ftrace buffer empty) [ 51.968239] Kernel Offset: disabled [ 51.971835] Rebooting in 86400 seconds..