[....] Starting enhanced syslogd: rsyslogd[ 16.819348] audit: type=1400 audit(1519507867.899:5): avc: denied { syslog } for pid=4089 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 22.887869] audit: type=1400 audit(1519507873.968:6): avc: denied { map } for pid=4228 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 '10.128.15.201' (ECDSA) to the list of known hosts. executing program [ 32.601146] audit: type=1400 audit(1519507883.681:7): avc: denied { map } for pid=4243 comm="syzkaller861470" path="/root/syzkaller861470588" 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 [ 37.856232] kasan: CONFIG_KASAN_INLINE enabled [ 37.860962] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 37.868474] general protection fault: 0000 [#1] SMP KASAN [ 37.873985] Dumping ftrace buffer: [ 37.877491] (ftrace buffer empty) [ 37.881171] Modules linked in: [ 37.884338] CPU: 1 PID: 4243 Comm: syzkaller861470 Not tainted 4.16.0-rc2+ #327 [ 37.891749] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.901399] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 37.906468] RSP: 0018:ffff8801afa47cc8 EFLAGS: 00010206 [ 37.911800] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846026f4 [ 37.919038] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 37.926276] RBP: ffff8801afa47ce0 R08: 0000000000000000 R09: 1ffff10035f48f15 [ 37.933516] R10: ffff8801afa47870 R11: 0000000000000001 R12: ffff8801b05457d2 [ 37.940754] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801afa47d58 [ 37.947994] FS: 0000000001d6c880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 37.956187] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.962041] CR2: 0000000000cd9660 CR3: 00000001b06f3005 CR4: 00000000001606e0 [ 37.969280] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.976518] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.983755] Call Trace: [ 37.986315] smc_shutdown+0x3ed/0x540 [ 37.990084] SyS_shutdown+0x137/0x290 [ 37.993857] ? SyS_getsockopt+0x340/0x340 [ 37.997977] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 38.003481] ? do_syscall_64+0xb6/0x940 [ 38.007424] ? SyS_getsockopt+0x340/0x340 [ 38.011540] do_syscall_64+0x280/0x940 [ 38.015397] ? __do_page_fault+0xc90/0xc90 [ 38.019600] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 38.024327] ? syscall_return_slowpath+0x550/0x550 [ 38.029226] ? syscall_return_slowpath+0x2ac/0x550 [ 38.034124] ? prepare_exit_to_usermode+0x350/0x350 [ 38.039110] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 38.044444] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.049258] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 38.054414] RIP: 0033:0x43fce9 [ 38.057573] RSP: 002b:00007ffd7fbcf7a8 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 38.065249] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fce9 [ 38.072489] RDX: 000000000043fce9 RSI: 0000000000000000 RDI: 0000000000000003 [ 38.079727] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 38.086968] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401610 [ 38.094205] R13: 00000000004016a0 R14: 0000000000000000 R15: 0000000000000000 [ 38.101449] 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 [ 38.120513] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801afa47cc8 [ 38.127141] ---[ end trace b49932eb9d26b045 ]--- [ 38.131881] Kernel panic - not syncing: Fatal exception [ 38.137523] Dumping ftrace buffer: [ 38.141030] (ftrace buffer empty) [ 38.144712] Kernel Offset: disabled [ 38.148310] Rebooting in 86400 seconds..