[....] Starting enhanced syslogd: rsyslogd[ 15.921416] audit: type=1400 audit(1520272252.060:5): avc: denied { syslog } for pid=4072 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?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: [ 18.264582] audit: type=1400 audit(1520272254.403:6): avc: denied { map } for pid=4211 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 '10.128.10.1' (ECDSA) to the list of known hosts. executing program [ 44.692988] audit: type=1400 audit(1520272280.831:7): avc: denied { map } for pid=4229 comm="syzkaller021445" path="/root/syzkaller021445939" 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 [ 50.144129] kasan: CONFIG_KASAN_INLINE enabled [ 50.148815] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 50.156191] general protection fault: 0000 [#1] SMP KASAN [ 50.161696] Dumping ftrace buffer: [ 50.165205] (ftrace buffer empty) [ 50.168885] Modules linked in: [ 50.172050] CPU: 0 PID: 4229 Comm: syzkaller021445 Not tainted 4.16.0-rc4+ #251 [ 50.179462] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.188793] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 50.193862] RSP: 0018:ffff8801b0977c78 EFLAGS: 00010206 [ 50.199191] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fc6f4 [ 50.206433] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 50.213672] RBP: ffff8801b0977c90 R08: 0000000000000000 R09: 1ffff1003612ef0b [ 50.220911] R10: ffff8801b0977820 R11: 0000000000000001 R12: ffff8801b15f67d2 [ 50.228148] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b0977d08 [ 50.235391] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000009c44840 [ 50.243582] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 50.249434] CR2: 0000562c40c3e110 CR3: 00000001b2480003 CR4: 00000000001606f0 [ 50.256675] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 50.263912] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 50.271151] Call Trace: [ 50.273711] smc_shutdown+0x3ed/0x540 [ 50.277493] SyS_shutdown+0x137/0x290 [ 50.281263] ? SyS_getsockopt+0x340/0x340 [ 50.285382] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 50.290887] ? do_fast_syscall_32+0x156/0xf9f [ 50.295353] ? SyS_getsockopt+0x340/0x340 [ 50.299470] do_fast_syscall_32+0x3ec/0xf9f [ 50.303763] ? do_int80_syscall_32+0x9c0/0x9c0 [ 50.308314] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 50.313037] ? syscall_return_slowpath+0x550/0x550 [ 50.317934] ? syscall_return_slowpath+0x2ac/0x550 [ 50.322834] ? prepare_exit_to_usermode+0x350/0x350 [ 50.327819] ? sysret32_from_system_call+0x5/0x3c [ 50.332630] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.337448] entry_SYSENTER_compat+0x70/0x7f [ 50.341823] RIP: 0023:0xf7f37c99 [ 50.345155] RSP: 002b:00000000ffb5a37c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 50.352828] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 50.360065] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 50.367304] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 50.374543] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 50.381782] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 50.389026] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 3c 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 [ 50.408088] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b0977c78 [ 50.414699] ---[ end trace b0c950334e9309e8 ]--- [ 50.419436] Kernel panic - not syncing: Fatal exception [ 50.425080] Dumping ftrace buffer: [ 50.428586] (ftrace buffer empty) [ 50.432265] Kernel Offset: disabled [ 50.435858] Rebooting in 86400 seconds..