[?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. [ 17.704483] audit: type=1400 audit(1521557742.032:6): avc: denied { map } for pid=4104 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 '10.128.0.45' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 24.021974] audit: type=1400 audit(1521557748.349:7): avc: denied { map } for pid=4118 comm="syzkaller355998" path="/root/syzkaller355998887" 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 [ 29.151191] kasan: CONFIG_KASAN_INLINE enabled [ 29.155923] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.163328] general protection fault: 0000 [#1] SMP KASAN [ 29.168847] Dumping ftrace buffer: [ 29.172361] (ftrace buffer empty) [ 29.176043] Modules linked in: [ 29.179209] CPU: 1 PID: 4118 Comm: syzkaller355998 Not tainted 4.16.0-rc6+ #270 [ 29.186622] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.195954] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 29.201027] RSP: 0018:ffff8801c96ffc78 EFLAGS: 00010206 [ 29.206357] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846006f4 [ 29.213595] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 29.220846] RBP: ffff8801c96ffc90 R08: 0000000000000000 R09: 1ffff100392dff0b [ 29.228089] R10: ffff8801c96ff820 R11: 0000000000000001 R12: ffff8801c95cc7d2 [ 29.235328] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801c96ffd08 [ 29.242567] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:000000000994f840 [ 29.250761] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 29.256612] CR2: 00000000008bc8c8 CR3: 00000001ca3bf001 CR4: 00000000001606e0 [ 29.263854] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.271103] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.278515] Call Trace: [ 29.281085] smc_shutdown+0x3ed/0x540 [ 29.284859] SyS_shutdown+0x137/0x290 [ 29.288630] ? SyS_getsockopt+0x340/0x340 [ 29.292752] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 29.298256] ? do_fast_syscall_32+0x156/0xf9f [ 29.302719] ? SyS_getsockopt+0x340/0x340 [ 29.306836] do_fast_syscall_32+0x3ec/0xf9f [ 29.311129] ? do_int80_syscall_32+0x9c0/0x9c0 [ 29.315676] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 29.320400] ? syscall_return_slowpath+0x550/0x550 [ 29.325296] ? syscall_return_slowpath+0x2ac/0x550 [ 29.330197] ? prepare_exit_to_usermode+0x350/0x350 [ 29.335183] ? sysret32_from_system_call+0x5/0x3c [ 29.339995] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.344808] entry_SYSENTER_compat+0x70/0x7f [ 29.349185] RIP: 0023:0xf7f68c99 [ 29.352516] RSP: 002b:00000000fffd506c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 29.360191] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 29.367430] RDX: 0000000000000002 RSI: 000000000000016b RDI: 0000000000000003 [ 29.374669] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 29.381907] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 29.389145] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 29.396390] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 0c 12 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 [ 29.415456] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801c96ffc78 [ 29.422088] ---[ end trace b214d47dcd018439 ]--- [ 29.426847] Kernel panic - not syncing: Fatal exception [ 29.432610] Dumping ftrace buffer: [ 29.436119] (ftrace buffer empty) [ 29.439799] Kernel Offset: disabled [ 29.443401] Rebooting in 86400 seconds..