[....] Starting enhanced syslogd: rsyslogd[ 17.305365] audit: type=1400 audit(1520265449.783:5): avc: denied { syslog } for pid=4082 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: [ 22.080487] audit: type=1400 audit(1520265454.558:6): avc: denied { map } for pid=4224 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 '10.128.0.29' (ECDSA) to the list of known hosts. executing program [ 28.390371] audit: type=1400 audit(1520265460.868:7): avc: denied { map } for pid=4237 comm="syzkaller294550" path="/root/syzkaller294550192" 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 [ 33.759635] kasan: CONFIG_KASAN_INLINE enabled [ 33.764396] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.771786] general protection fault: 0000 [#1] SMP KASAN [ 33.777315] Dumping ftrace buffer: [ 33.780835] (ftrace buffer empty) [ 33.784515] Modules linked in: [ 33.787682] CPU: 1 PID: 4237 Comm: syzkaller294550 Not tainted 4.16.0-rc4+ #251 [ 33.795096] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.804432] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 33.809504] RSP: 0018:ffff8801b0807c78 EFLAGS: 00010206 [ 33.814835] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fc6f4 [ 33.822073] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 33.829315] RBP: ffff8801b0807c90 R08: 0000000000000000 R09: 1ffff10036100f0b [ 33.836553] R10: ffff8801b0807820 R11: 0000000000000001 R12: ffff8801b0bcd7d2 [ 33.843791] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b0807d08 [ 33.851034] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:000000000972b840 [ 33.859229] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 33.865079] CR2: 000000000096a760 CR3: 00000001b2ae5004 CR4: 00000000001606e0 [ 33.872321] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.879562] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.886820] Call Trace: [ 33.889385] smc_shutdown+0x3ed/0x540 [ 33.893158] SyS_shutdown+0x137/0x290 [ 33.896927] ? SyS_getsockopt+0x340/0x340 [ 33.901048] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 33.906555] ? do_fast_syscall_32+0x156/0xf9f [ 33.911024] ? SyS_getsockopt+0x340/0x340 [ 33.915142] do_fast_syscall_32+0x3ec/0xf9f [ 33.919434] ? do_int80_syscall_32+0x9c0/0x9c0 [ 33.923985] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 33.928713] ? syscall_return_slowpath+0x550/0x550 [ 33.933614] ? syscall_return_slowpath+0x2ac/0x550 [ 33.938520] ? prepare_exit_to_usermode+0x350/0x350 [ 33.943507] ? sysret32_from_system_call+0x5/0x3c [ 33.948320] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.953173] entry_SYSENTER_compat+0x70/0x7f [ 33.957573] RIP: 0023:0xf7ff1c99 [ 33.960913] RSP: 002b:00000000fff0405c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 33.968600] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 33.975845] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 33.983085] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 33.990324] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 33.997565] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.004812] 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 [ 34.023899] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b0807c78 [ 34.030537] ---[ end trace 71f4cc1be612a125 ]--- [ 34.035286] Kernel panic - not syncing: Fatal exception [ 34.040950] Dumping ftrace buffer: [ 34.044474] (ftrace buffer empty) [ 34.048159] Kernel Offset: disabled [ 34.051760] Rebooting in 86400 seconds..