[?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. [ 17.498964] audit: type=1400 audit(1521239810.619:6): avc: denied { map } for pid=4193 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 '10.128.0.23' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 23.828729] audit: type=1400 audit(1521239816.949:7): avc: denied { map } for pid=4207 comm="syzkaller867884" path="/root/syzkaller867884232" 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 [ 29.152157] kasan: CONFIG_KASAN_INLINE enabled [ 29.156873] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.164258] general protection fault: 0000 [#1] SMP KASAN [ 29.169767] Dumping ftrace buffer: [ 29.173278] (ftrace buffer empty) [ 29.176962] Modules linked in: [ 29.180134] CPU: 0 PID: 4207 Comm: syzkaller867884 Not tainted 4.16.0-rc5+ #356 [ 29.187546] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.196878] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 29.201948] RSP: 0018:ffff8801d29afcc8 EFLAGS: 00010206 [ 29.207283] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 29.214524] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 29.221763] RBP: ffff8801d29afce0 R08: 0000000000000000 R09: 1ffff1003a535f15 [ 29.229002] R10: ffff8801d29af870 R11: 0000000000000001 R12: ffff8801d58767d2 [ 29.236242] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801d29afd58 [ 29.243482] FS: 000000000236b880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 29.251677] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.257531] CR2: 00007fda1d9b1000 CR3: 00000001b6e68004 CR4: 00000000001606f0 [ 29.264772] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.272010] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.279248] Call Trace: [ 29.281807] smc_shutdown+0x3ed/0x540 [ 29.285580] SyS_shutdown+0x137/0x290 [ 29.289352] ? SyS_getsockopt+0x340/0x340 [ 29.293475] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 29.298982] ? do_syscall_64+0xb7/0x940 [ 29.302927] ? SyS_getsockopt+0x340/0x340 [ 29.307047] do_syscall_64+0x281/0x940 [ 29.310903] ? __do_page_fault+0xc90/0xc90 [ 29.315108] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 29.319835] ? syscall_return_slowpath+0x550/0x550 [ 29.324737] ? syscall_return_slowpath+0x2ac/0x550 [ 29.329637] ? prepare_exit_to_usermode+0x350/0x350 [ 29.334624] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 29.339961] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.344776] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 29.349932] RIP: 0033:0x43fcb9 [ 29.353093] RSP: 002b:00007ffd83a1c908 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 29.360770] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 29.368008] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 29.375247] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 29.382490] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 29.389729] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 29.396976] 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 [ 29.416044] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801d29afcc8 [ 29.422661] ---[ end trace b7f9e7bc37c89fa9 ]--- [ 29.427411] Kernel panic - not syncing: Fatal exception [ 29.433124] Dumping ftrace buffer: [ 29.436635] (ftrace buffer empty) [ 29.440318] Kernel Offset: disabled [ 29.443914] Rebooting in 86400 seconds..