[?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. [ 18.874618] audit: type=1400 audit(1520946688.679:6): avc: denied { map } for pid=4226 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.8' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 25.551990] audit: type=1400 audit(1520946695.356:7): avc: denied { map } for pid=4241 comm="syzkaller801317" path="/root/syzkaller801317362" 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 [ 30.688335] kasan: CONFIG_KASAN_INLINE enabled [ 30.693035] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.700549] general protection fault: 0000 [#1] SMP KASAN [ 30.706073] Dumping ftrace buffer: [ 30.709586] (ftrace buffer empty) [ 30.713268] Modules linked in: [ 30.716436] CPU: 0 PID: 4241 Comm: syzkaller801317 Not tainted 4.16.0-rc5+ #352 [ 30.723850] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.733192] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 30.738279] RSP: 0018:ffff8801a8c17cc8 EFLAGS: 00010206 [ 30.743618] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 30.751030] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 30.758274] RBP: ffff8801a8c17ce0 R08: 0000000000000000 R09: 1ffff10035182f15 [ 30.765529] R10: ffff8801a8c17870 R11: 0000000000000001 R12: ffff8801b006d7d2 [ 30.772772] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801a8c17d58 [ 30.780015] FS: 00000000016af880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 30.788211] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.794065] CR2: 0000000001203c60 CR3: 00000001adf4f001 CR4: 00000000001606f0 [ 30.801309] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.808555] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.815800] Call Trace: [ 30.818370] smc_shutdown+0x3ed/0x540 [ 30.822145] SyS_shutdown+0x137/0x290 [ 30.825920] ? SyS_getsockopt+0x340/0x340 [ 30.830042] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 30.835550] ? do_syscall_64+0xb7/0x940 [ 30.839496] ? SyS_getsockopt+0x340/0x340 [ 30.843618] do_syscall_64+0x281/0x940 [ 30.847569] ? __do_page_fault+0xc90/0xc90 [ 30.851782] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.856523] ? syscall_return_slowpath+0x550/0x550 [ 30.861444] ? syscall_return_slowpath+0x2ac/0x550 [ 30.866353] ? prepare_exit_to_usermode+0x350/0x350 [ 30.871350] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 30.876695] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.881514] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 30.886679] RIP: 0033:0x43fcb9 [ 30.889846] RSP: 002b:00007ffc2dd62138 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 30.897536] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 30.904788] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 30.912034] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 30.919292] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 30.926541] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 30.933796] 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 [ 30.952892] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801a8c17cc8 [ 30.959592] ---[ end trace a18edbb8cc6c7810 ]--- [ 30.964352] Kernel panic - not syncing: Fatal exception [ 30.970149] Dumping ftrace buffer: [ 30.973668] (ftrace buffer empty) [ 30.977354] Kernel Offset: disabled [ 30.980959] Rebooting in 86400 seconds..