[....] Starting enhanced syslogd: rsyslogd[ 16.849192] audit: type=1400 audit(1520082588.070:5): avc: denied { syslog } for pid=4084 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 file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.589610] audit: type=1400 audit(1520082593.810:6): avc: denied { map } for pid=4225 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 '10.128.0.24' (ECDSA) to the list of known hosts. executing program [ 28.889885] audit: type=1400 audit(1520082600.110:7): avc: denied { map } for pid=4239 comm="syzkaller006007" path="/root/syzkaller006007286" 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 [ 34.272327] kasan: CONFIG_KASAN_INLINE enabled [ 34.277029] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.284559] general protection fault: 0000 [#1] SMP KASAN [ 34.290082] Dumping ftrace buffer: [ 34.293593] (ftrace buffer empty) [ 34.297271] Modules linked in: [ 34.300435] CPU: 0 PID: 4239 Comm: syzkaller006007 Not tainted 4.16.0-rc3+ #247 [ 34.307849] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.317180] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.322253] RSP: 0018:ffff8801cf84fc78 EFLAGS: 00010206 [ 34.328082] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fb6f4 [ 34.335324] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.342565] RBP: ffff8801cf84fc90 R08: 0000000000000000 R09: 1ffff10039f09f0b [ 34.349806] R10: ffff8801cf84f820 R11: 0000000000000001 R12: ffff8801b1efc7d2 [ 34.357219] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801cf84fd08 [ 34.364458] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000008236840 [ 34.372654] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 34.378503] CR2: 0000000001d9d8c0 CR3: 00000001b1781006 CR4: 00000000001606f0 [ 34.385746] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.392987] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.400225] Call Trace: [ 34.402790] smc_shutdown+0x3ed/0x540 [ 34.406565] SyS_shutdown+0x137/0x290 [ 34.410336] ? SyS_getsockopt+0x340/0x340 [ 34.414457] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.419962] ? do_fast_syscall_32+0x156/0xf9f [ 34.424428] ? SyS_getsockopt+0x340/0x340 [ 34.428546] do_fast_syscall_32+0x3ec/0xf9f [ 34.432842] ? do_int80_syscall_32+0x9c0/0x9c0 [ 34.437396] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.442901] ? syscall_return_slowpath+0x550/0x550 [ 34.447807] ? syscall_return_slowpath+0x2ac/0x550 [ 34.452710] ? sysret32_from_system_call+0x5/0x3c [ 34.457522] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.462345] entry_SYSENTER_compat+0x70/0x7f [ 34.466723] RIP: 0023:0xf7f25c99 [ 34.470060] RSP: 002b:00000000ffbe4edc EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 34.477734] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 34.484971] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 34.492209] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 34.499450] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 34.506687] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.513932] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 4c 3d 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 [ 34.533015] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801cf84fc78 [ 34.539662] ---[ end trace 3af0b575b125d928 ]--- [ 34.544412] Kernel panic - not syncing: Fatal exception [ 34.550273] Dumping ftrace buffer: [ 34.553785] (ftrace buffer empty) [ 34.557466] Kernel Offset: disabled [ 34.561065] Rebooting in 86400 seconds..