[....] Starting enhanced syslogd: rsyslogd[ 16.617972] audit: type=1400 audit(1520261000.691:5): avc: denied { syslog } for pid=4084 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 OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.456143] audit: type=1400 audit(1520261006.529:6): avc: denied { map } for pid=4225 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 '10.128.0.20' (ECDSA) to the list of known hosts. executing program [ 28.880584] audit: type=1400 audit(1520261012.954:7): avc: denied { map } for pid=4239 comm="syzkaller080317" path="/root/syzkaller080317056" 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 [ 34.271128] kasan: CONFIG_KASAN_INLINE enabled [ 34.275824] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.283351] general protection fault: 0000 [#1] SMP KASAN [ 34.288867] Dumping ftrace buffer: [ 34.292376] (ftrace buffer empty) [ 34.296054] Modules linked in: [ 34.299219] CPU: 0 PID: 4239 Comm: syzkaller080317 Not tainted 4.16.0-rc4+ #341 [ 34.306633] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.315963] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.321036] RSP: 0018:ffff8801d0787cc8 EFLAGS: 00010206 [ 34.326366] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fc6f4 [ 34.333603] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.340845] RBP: ffff8801d0787ce0 R08: 0000000000000000 R09: 1ffff1003a0f0f15 [ 34.348083] R10: ffff8801d0787870 R11: 0000000000000001 R12: ffff8801b083d7d2 [ 34.355320] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801d0787d58 [ 34.362559] FS: 000000000129c880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 34.371138] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.376987] CR2: 00007f4d77dc4000 CR3: 00000001b053c001 CR4: 00000000001606f0 [ 34.384230] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.391468] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.398707] Call Trace: [ 34.401270] smc_shutdown+0x3ed/0x540 [ 34.405041] SyS_shutdown+0x137/0x290 [ 34.408812] ? SyS_getsockopt+0x340/0x340 [ 34.412935] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.418440] ? do_syscall_64+0xb7/0x940 [ 34.422383] ? SyS_getsockopt+0x340/0x340 [ 34.426501] do_syscall_64+0x281/0x940 [ 34.430360] ? __do_page_fault+0xc90/0xc90 [ 34.434562] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.439288] ? syscall_return_slowpath+0x550/0x550 [ 34.444189] ? syscall_return_slowpath+0x2ac/0x550 [ 34.449088] ? prepare_exit_to_usermode+0x350/0x350 [ 34.454072] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 34.459408] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.464228] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 34.469393] RIP: 0033:0x43fce9 [ 34.472551] RSP: 002b:00007ffce0ed6698 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 34.480227] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fce9 [ 34.487467] RDX: 000000000043fce9 RSI: 0000000000000000 RDI: 0000000000000003 [ 34.494709] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 34.501946] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401610 [ 34.509185] R13: 00000000004016a0 R14: 0000000000000000 R15: 0000000000000000 [ 34.516433] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 3c 3f 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 [ 34.535502] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801d0787cc8 [ 34.542140] ---[ end trace 12fcd9a60d7a351e ]--- [ 34.546889] Kernel panic - not syncing: Fatal exception [ 34.552654] Dumping ftrace buffer: [ 34.556169] (ftrace buffer empty) [ 34.559851] Kernel Offset: disabled [ 34.563621] Rebooting in 86400 seconds..