[....] Starting enhanced syslogd: rsyslogd[ 15.579673] audit: type=1400 audit(1520885525.474:5): avc: denied { syslog } for pid=4064 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: [ 32.857345] audit: type=1400 audit(1520885542.752:6): avc: denied { map } for pid=4208 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 '10.128.10.0' (ECDSA) to the list of known hosts. executing program [ 42.948859] audit: type=1400 audit(1520885552.843:7): avc: denied { map } for pid=4221 comm="syzkaller736296" path="/root/syzkaller736296161" 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 [ 48.096158] kasan: CONFIG_KASAN_INLINE enabled [ 48.100885] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 48.108433] general protection fault: 0000 [#1] SMP KASAN [ 48.113945] Dumping ftrace buffer: [ 48.117454] (ftrace buffer empty) [ 48.121136] Modules linked in: [ 48.124305] CPU: 0 PID: 4221 Comm: syzkaller736296 Not tainted 4.16.0-rc5+ #261 [ 48.131729] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.141082] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 48.146152] RSP: 0018:ffff8801b278fc78 EFLAGS: 00010206 [ 48.151485] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fe6f4 [ 48.158724] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 48.165973] RBP: ffff8801b278fc90 R08: 0000000000000000 R09: 1ffff100364f1f0b [ 48.173212] R10: ffff8801b278f820 R11: 0000000000000001 R12: ffff8801b21057d2 [ 48.180466] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b278fd08 [ 48.187708] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000008f6d840 [ 48.195903] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 48.201761] CR2: 000055cc51971110 CR3: 00000001b2c7d004 CR4: 00000000001606f0 [ 48.209006] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 48.216333] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 48.223571] Call Trace: [ 48.226135] smc_shutdown+0x3ed/0x540 [ 48.229912] SyS_shutdown+0x137/0x290 [ 48.233683] ? SyS_getsockopt+0x340/0x340 [ 48.237804] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 48.243313] ? do_fast_syscall_32+0x156/0xf9f [ 48.247780] ? SyS_getsockopt+0x340/0x340 [ 48.251897] do_fast_syscall_32+0x3ec/0xf9f [ 48.256195] ? do_int80_syscall_32+0x9c0/0x9c0 [ 48.260747] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 48.265473] ? syscall_return_slowpath+0x550/0x550 [ 48.270375] ? syscall_return_slowpath+0x2ac/0x550 [ 48.275283] ? prepare_exit_to_usermode+0x350/0x350 [ 48.280272] ? sysret32_from_system_call+0x5/0x3c [ 48.285087] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.289904] entry_SYSENTER_compat+0x70/0x7f [ 48.294285] RIP: 0023:0xf7f3ac99 [ 48.297619] RSP: 002b:00000000ffc3eaac EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 48.305307] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 48.312562] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 48.319801] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 48.327039] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 48.334279] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 48.341529] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ac 30 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 [ 48.360610] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b278fc78 [ 48.367239] ---[ end trace 555ac897629e5fe7 ]--- [ 48.371988] Kernel panic - not syncing: Fatal exception [ 48.377671] Dumping ftrace buffer: [ 48.381187] (ftrace buffer empty) [ 48.384870] Kernel Offset: disabled [ 48.388468] Rebooting in 86400 seconds..