[....] Starting enhanced syslogd: rsyslogd[ 16.918251] audit: type=1400 audit(1521513158.883:5): avc: denied { syslog } for pid=4097 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: [ 22.603239] audit: type=1400 audit(1521513164.568:6): avc: denied { map } for pid=4238 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 '10.128.10.6' (ECDSA) to the list of known hosts. executing program [ 28.920824] audit: type=1400 audit(1521513170.885:7): avc: denied { map } for pid=4252 comm="syzkaller691334" path="/root/syzkaller691334644" 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 [ 34.271138] kasan: CONFIG_KASAN_INLINE enabled [ 34.275873] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.283259] general protection fault: 0000 [#1] SMP KASAN [ 34.288774] Dumping ftrace buffer: [ 34.292285] (ftrace buffer empty) [ 34.295965] Modules linked in: [ 34.299129] CPU: 0 PID: 4252 Comm: syzkaller691334 Not tainted 4.16.0-rc6+ #270 [ 34.306542] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.315870] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.320939] RSP: 0018:ffff8801aa6efc78 EFLAGS: 00010206 [ 34.326277] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846006f4 [ 34.333516] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.340752] RBP: ffff8801aa6efc90 R08: 0000000000000000 R09: 1ffff100354ddf0b [ 34.347993] R10: ffff8801aa6ef820 R11: 0000000000000001 R12: ffff8801b1f9d7d2 [ 34.355236] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801aa6efd08 [ 34.362477] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000008d62840 [ 34.370672] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 34.376520] CR2: 00007fd6f9758000 CR3: 00000001b0c5e005 CR4: 00000000001606f0 [ 34.383760] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.391000] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.398264] Call Trace: [ 34.400827] smc_shutdown+0x3ed/0x540 [ 34.404601] SyS_shutdown+0x137/0x290 [ 34.408370] ? SyS_getsockopt+0x340/0x340 [ 34.412491] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.417997] ? do_fast_syscall_32+0x156/0xf9f [ 34.422468] ? SyS_getsockopt+0x340/0x340 [ 34.426589] do_fast_syscall_32+0x3ec/0xf9f [ 34.430883] ? do_int80_syscall_32+0x9c0/0x9c0 [ 34.435448] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.440176] ? syscall_return_slowpath+0x550/0x550 [ 34.445076] ? syscall_return_slowpath+0x2ac/0x550 [ 34.449974] ? prepare_exit_to_usermode+0x350/0x350 [ 34.454969] ? sysret32_from_system_call+0x5/0x3c [ 34.459782] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.464610] entry_SYSENTER_compat+0x70/0x7f [ 34.468995] RIP: 0023:0xf7ff4c99 [ 34.472333] RSP: 002b:00000000ff9e263c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 34.480018] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 34.487262] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 34.494504] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 34.501764] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 34.509032] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.516313] 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 [ 34.535494] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801aa6efc78 [ 34.542171] ---[ end trace a38697b3c10cef76 ]--- [ 34.546940] Kernel panic - not syncing: Fatal exception [ 34.552698] Dumping ftrace buffer: [ 34.556225] (ftrace buffer empty) [ 34.559908] Kernel Offset: disabled [ 34.563507] Rebooting in 86400 seconds..