[....] Starting enhanced syslogd: rsyslogd[ 15.821360] audit: type=1400 audit(1519534067.823:5): 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: [ 18.597541] audit: type=1400 audit(1519534070.600:6): avc: denied { map } for pid=4210 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 '10.128.15.229' (ECDSA) to the list of known hosts. executing program [ 24.893374] audit: type=1400 audit(1519534076.896:7): avc: denied { map } for pid=4224 comm="syzkaller886123" path="/root/syzkaller886123488" 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 [ 30.176316] kasan: CONFIG_KASAN_INLINE enabled [ 30.181079] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.188645] general protection fault: 0000 [#1] SMP KASAN [ 30.194170] Dumping ftrace buffer: [ 30.197691] (ftrace buffer empty) [ 30.201382] Modules linked in: [ 30.204554] CPU: 1 PID: 4224 Comm: syzkaller886123 Not tainted 4.16.0-rc2+ #328 [ 30.211979] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.221321] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 30.226402] RSP: 0018:ffff8801cbce7cc8 EFLAGS: 00010206 [ 30.231741] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846026f4 [ 30.238986] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 30.246234] RBP: ffff8801cbce7ce0 R08: 0000000000000000 R09: 1ffff1003979cf15 [ 30.253485] R10: ffff8801cbce7870 R11: 0000000000000001 R12: ffff8801a91727d2 [ 30.260732] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801cbce7d58 [ 30.267981] FS: 0000000002257880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 30.276185] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.282049] CR2: 00007f5af5167000 CR3: 00000001d7cfc005 CR4: 00000000001606e0 [ 30.289308] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.296558] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.303805] Call Trace: [ 30.306377] smc_shutdown+0x3ed/0x540 [ 30.310159] SyS_shutdown+0x137/0x290 [ 30.313940] ? SyS_getsockopt+0x340/0x340 [ 30.318067] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 30.323580] ? do_syscall_64+0xb6/0x940 [ 30.327531] ? SyS_getsockopt+0x340/0x340 [ 30.331658] do_syscall_64+0x280/0x940 [ 30.335520] ? __do_page_fault+0xc90/0xc90 [ 30.339729] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.344467] ? syscall_return_slowpath+0x550/0x550 [ 30.349374] ? syscall_return_slowpath+0x2ac/0x550 [ 30.354281] ? prepare_exit_to_usermode+0x350/0x350 [ 30.359279] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 30.364624] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.369449] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 30.374621] RIP: 0033:0x43fcb9 [ 30.377790] RSP: 002b:00007ffceada8b38 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 30.385485] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 30.392746] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 30.399996] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 30.407252] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 30.414503] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 30.421763] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ac e5 10 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 [ 30.440851] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801cbce7cc8 [ 30.447465] ---[ end trace 2c23cb2d29e951ff ]--- [ 30.452246] Kernel panic - not syncing: Fatal exception [ 30.458022] Dumping ftrace buffer: [ 30.461542] (ftrace buffer empty) [ 30.465232] Kernel Offset: disabled [ 30.468838] Rebooting in 86400 seconds..