[....] Starting enhanced syslogd: rsyslogd[ 17.792285] audit: type=1400 audit(1521030803.843:5): avc: denied { syslog } for pid=4092 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: [ 23.706214] audit: type=1400 audit(1521030809.757:6): avc: denied { map } for pid=4233 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 '10.128.10.19' (ECDSA) to the list of known hosts. executing program [ 30.077562] audit: type=1400 audit(1521030816.128:7): avc: denied { map } for pid=4247 comm="syzkaller700031" path="/root/syzkaller700031832" 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 [ 35.295127] kasan: CONFIG_KASAN_INLINE enabled [ 35.299851] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.307290] general protection fault: 0000 [#1] SMP KASAN [ 35.312827] Dumping ftrace buffer: [ 35.316342] (ftrace buffer empty) [ 35.320027] Modules linked in: [ 35.323193] CPU: 1 PID: 4247 Comm: syzkaller700031 Not tainted 4.16.0-rc5+ #352 [ 35.330605] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.339935] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 35.345010] RSP: 0018:ffff8801d2f07cc8 EFLAGS: 00010206 [ 35.350347] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 35.357604] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 35.364845] RBP: ffff8801d2f07ce0 R08: 0000000000000000 R09: 1ffff1003a5e0f15 [ 35.372086] R10: ffff8801d2f07870 R11: 0000000000000001 R12: ffff8801b0a497d2 [ 35.379325] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801d2f07d58 [ 35.386566] FS: 0000000001e25880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 35.394767] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.400627] CR2: 0000000002023728 CR3: 00000001b13d4003 CR4: 00000000001606e0 [ 35.407871] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.415112] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.422355] Call Trace: [ 35.424917] smc_shutdown+0x3ed/0x540 [ 35.428691] SyS_shutdown+0x137/0x290 [ 35.432463] ? SyS_getsockopt+0x340/0x340 [ 35.436585] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 35.442094] ? do_syscall_64+0xb7/0x940 [ 35.446038] ? SyS_getsockopt+0x340/0x340 [ 35.450155] do_syscall_64+0x281/0x940 [ 35.454017] ? __do_page_fault+0xc90/0xc90 [ 35.458224] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.462948] ? syscall_return_slowpath+0x550/0x550 [ 35.467858] ? syscall_return_slowpath+0x2ac/0x550 [ 35.472783] ? prepare_exit_to_usermode+0x350/0x350 [ 35.477775] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 35.483112] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.487926] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 35.493095] RIP: 0033:0x43fcb9 [ 35.496275] RSP: 002b:00007ffe5236d828 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 35.503966] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 35.511219] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 35.518476] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 35.525720] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 35.532964] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 35.540214] 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 [ 35.559293] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801d2f07cc8 [ 35.565914] ---[ end trace d504102175c6770d ]--- [ 35.570668] Kernel panic - not syncing: Fatal exception [ 35.576341] Dumping ftrace buffer: [ 35.579853] (ftrace buffer empty) [ 35.583534] Kernel Offset: disabled [ 35.587132] Rebooting in 86400 seconds..