[....] Starting enhanced syslogd: rsyslogd[ 16.871335] audit: type=1400 audit(1519903489.067:5): 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: [ 22.717572] audit: type=1400 audit(1519903494.913:6): 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 '10.128.0.44' (ECDSA) to the list of known hosts. executing program [ 29.037555] audit: type=1400 audit(1519903501.233:7): avc: denied { map } for pid=4237 comm="syzkaller718651" path="/root/syzkaller718651277" 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 [ 34.272105] kasan: CONFIG_KASAN_INLINE enabled [ 34.276788] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.284164] general protection fault: 0000 [#1] SMP KASAN [ 34.289674] Dumping ftrace buffer: [ 34.293183] (ftrace buffer empty) [ 34.296863] Modules linked in: [ 34.300030] CPU: 1 PID: 4237 Comm: syzkaller718651 Not tainted 4.16.0-rc3+ #244 [ 34.307451] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.316779] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.321848] RSP: 0018:ffff8801cda8fc78 EFLAGS: 00010206 [ 34.327179] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fb6f4 [ 34.334416] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.341653] RBP: ffff8801cda8fc90 R08: 0000000000000000 R09: 1ffff10039b51f0b [ 34.348892] R10: ffff8801cda8f820 R11: 0000000000000001 R12: ffff8801b04dc7d2 [ 34.356134] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801cda8fd08 [ 34.363373] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:000000000980c840 [ 34.371567] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 34.377416] CR2: 00007f737041e000 CR3: 00000001ae68a005 CR4: 00000000001606e0 [ 34.384659] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.391904] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.399147] Call Trace: [ 34.401710] smc_shutdown+0x3ed/0x540 [ 34.405481] SyS_shutdown+0x137/0x290 [ 34.409255] ? SyS_getsockopt+0x340/0x340 [ 34.413376] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.418883] ? do_fast_syscall_32+0x156/0xf9f [ 34.423346] ? SyS_getsockopt+0x340/0x340 [ 34.427466] do_fast_syscall_32+0x3ec/0xf9f [ 34.431759] ? do_int80_syscall_32+0x9c0/0x9c0 [ 34.436310] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.441034] ? syscall_return_slowpath+0x550/0x550 [ 34.445935] ? syscall_return_slowpath+0x2ac/0x550 [ 34.450834] ? prepare_exit_to_usermode+0x350/0x350 [ 34.455824] ? sysret32_from_system_call+0x5/0x3c [ 34.460638] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.465451] entry_SYSENTER_compat+0x70/0x7f [ 34.469830] RIP: 0023:0xf7f24c99 [ 34.473162] RSP: 002b:00000000ff989eec EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 34.480837] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 34.488078] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 34.495317] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 34.502554] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 34.509794] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.517042] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 4c 3d 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 [ 34.536112] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801cda8fc78 [ 34.542725] ---[ end trace 1c54fd33e9d29299 ]--- [ 34.547465] Kernel panic - not syncing: Fatal exception [ 34.553138] Dumping ftrace buffer: [ 34.556647] (ftrace buffer empty) [ 34.560328] Kernel Offset: disabled [ 34.563926] Rebooting in 86400 seconds..