[ 17.893090] rsyslogd (4077) used greatest stack depth: 16472 bytes left [?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: [ 24.188296] audit: type=1400 audit(1520428203.955:6): 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 '10.128.0.47' (ECDSA) to the list of known hosts. executing program [ 30.475851] audit: type=1400 audit(1520428210.242:7): avc: denied { map } for pid=4242 comm="syzkaller039006" path="/root/syzkaller039006024" 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 [ 35.808614] kasan: CONFIG_KASAN_INLINE enabled [ 35.813322] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.820903] general protection fault: 0000 [#1] SMP KASAN [ 35.826427] Dumping ftrace buffer: [ 35.829935] (ftrace buffer empty) [ 35.833615] Modules linked in: [ 35.836779] CPU: 1 PID: 4242 Comm: syzkaller039006 Not tainted 4.16.0-rc4+ #254 [ 35.844191] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.853537] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 35.858609] RSP: 0018:ffff8801b079fc78 EFLAGS: 00010206 [ 35.863941] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fd6f4 [ 35.871181] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 35.878421] RBP: ffff8801b079fc90 R08: 0000000000000000 R09: 1ffff100360f3f0b [ 35.885660] R10: ffff8801b079f820 R11: 0000000000000001 R12: ffff8801b0f177d2 [ 35.892898] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b079fd08 [ 35.900138] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000008fcb840 [ 35.908332] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 35.914182] CR2: 000000000208e2b0 CR3: 00000001b04a8005 CR4: 00000000001606e0 [ 35.921424] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.928663] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.935904] Call Trace: [ 35.938466] smc_shutdown+0x3ed/0x540 [ 35.942242] SyS_shutdown+0x137/0x290 [ 35.946022] ? SyS_getsockopt+0x340/0x340 [ 35.950146] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 35.956173] ? do_fast_syscall_32+0x156/0xf9f [ 35.960639] ? SyS_getsockopt+0x340/0x340 [ 35.964757] do_fast_syscall_32+0x3ec/0xf9f [ 35.969053] ? do_int80_syscall_32+0x9c0/0x9c0 [ 35.973615] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 35.979125] ? syscall_return_slowpath+0x550/0x550 [ 35.984028] ? syscall_return_slowpath+0x2ac/0x550 [ 35.988936] ? sysret32_from_system_call+0x5/0x3c [ 35.993751] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.998564] entry_SYSENTER_compat+0x70/0x7f [ 36.002941] RIP: 0023:0xf7f0fc99 [ 36.006273] RSP: 002b:00000000ffd8c50c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 36.013951] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 36.021189] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 36.028435] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 36.035672] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 36.042910] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 36.050159] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 1c 2f 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 [ 36.069230] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b079fc78 [ 36.075856] ---[ end trace 99695eb80eb5dbae ]--- [ 36.080615] Kernel panic - not syncing: Fatal exception [ 36.086418] Dumping ftrace buffer: [ 36.089929] (ftrace buffer empty) [ 36.093608] Kernel Offset: disabled [ 36.097204] Rebooting in 86400 seconds..