[?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. [ 18.318800] audit: type=1400 audit(1520573753.681:6): avc: denied { map } for pid=4222 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 '10.128.10.18' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 24.855662] audit: type=1400 audit(1520573760.218:7): avc: denied { map } for pid=4236 comm="syzkaller968237" path="/root/syzkaller968237168" 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 [ 30.176370] kasan: CONFIG_KASAN_INLINE enabled [ 30.181089] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.188668] general protection fault: 0000 [#1] SMP KASAN [ 30.194193] Dumping ftrace buffer: [ 30.197702] (ftrace buffer empty) [ 30.201381] Modules linked in: [ 30.204549] CPU: 0 PID: 4236 Comm: syzkaller968237 Not tainted 4.16.0-rc4+ #346 [ 30.211962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.221307] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 30.226375] RSP: 0018:ffff8801b176fcc8 EFLAGS: 00010206 [ 30.231707] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fc6f4 [ 30.238948] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 30.246187] RBP: ffff8801b176fce0 R08: 0000000000000000 R09: 1ffff100362edf15 [ 30.253426] R10: ffff8801b176f870 R11: 0000000000000001 R12: ffff8801b21807d2 [ 30.260666] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b176fd58 [ 30.267917] FS: 00000000017b6880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 30.276112] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.281962] CR2: 00007fccfe229000 CR3: 00000001b169d006 CR4: 00000000001606f0 [ 30.289205] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.296444] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.303693] Call Trace: [ 30.306259] smc_shutdown+0x3ed/0x540 [ 30.310037] SyS_shutdown+0x137/0x290 [ 30.313808] ? SyS_getsockopt+0x340/0x340 [ 30.317931] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 30.323439] ? do_syscall_64+0xb7/0x940 [ 30.327386] ? SyS_getsockopt+0x340/0x340 [ 30.331503] do_syscall_64+0x281/0x940 [ 30.335359] ? __do_page_fault+0xc90/0xc90 [ 30.339563] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.344289] ? syscall_return_slowpath+0x550/0x550 [ 30.349188] ? syscall_return_slowpath+0x2ac/0x550 [ 30.354088] ? prepare_exit_to_usermode+0x350/0x350 [ 30.359077] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 30.364411] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.369225] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 30.374382] RIP: 0033:0x43fcb9 [ 30.377541] RSP: 002b:00007ffe15b6eaf8 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 30.385219] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 30.392457] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 30.399697] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 30.406937] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 30.414177] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 30.421424] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 1c 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 [ 30.440496] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b176fcc8 [ 30.447122] ---[ end trace 0cf83d6468dca25b ]--- [ 30.451867] Kernel panic - not syncing: Fatal exception [ 30.457611] Dumping ftrace buffer: [ 30.461126] (ftrace buffer empty) [ 30.464811] Kernel Offset: disabled [ 30.468425] Rebooting in 86400 seconds..