[....] Starting enhanced syslogd: rsyslogd[ 17.378737] audit: type=1400 audit(1521420563.933:5): avc: denied { syslog } for pid=4079 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.684829] audit: type=1400 audit(1521420570.239:6): avc: denied { map } for pid=4219 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 '10.128.0.14' (ECDSA) to the list of known hosts. executing program [ 29.985817] audit: type=1400 audit(1521420576.540:7): avc: denied { map } for pid=4233 comm="syzkaller070423" path="/root/syzkaller070423866" 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 [ 35.295292] kasan: CONFIG_KASAN_INLINE enabled [ 35.300213] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.307654] general protection fault: 0000 [#1] SMP KASAN [ 35.313177] Dumping ftrace buffer: [ 35.316690] (ftrace buffer empty) [ 35.320374] Modules linked in: [ 35.323542] CPU: 1 PID: 4233 Comm: syzkaller070423 Not tainted 4.16.0-rc5+ #268 [ 35.330957] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.340304] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 35.345375] RSP: 0018:ffff8801d2d3fc78 EFLAGS: 00010206 [ 35.350710] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 35.357965] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 35.365206] RBP: ffff8801d2d3fc90 R08: 0000000000000000 R09: 1ffff1003a5a7f0b [ 35.372448] R10: ffff8801d2d3f820 R11: 0000000000000001 R12: ffff8801b04ab7d2 [ 35.379691] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801d2d3fd08 [ 35.386933] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000092d5840 [ 35.395136] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 35.400991] CR2: 000000000132bbd0 CR3: 00000001ae9d4002 CR4: 00000000001606e0 [ 35.408237] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.415478] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.422719] Call Trace: [ 35.425295] smc_shutdown+0x3ed/0x540 [ 35.429075] SyS_shutdown+0x137/0x290 [ 35.432847] ? SyS_getsockopt+0x340/0x340 [ 35.436980] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 35.442488] ? do_fast_syscall_32+0x156/0xf9f [ 35.446954] ? SyS_getsockopt+0x340/0x340 [ 35.451081] do_fast_syscall_32+0x3ec/0xf9f [ 35.455377] ? do_int80_syscall_32+0x9c0/0x9c0 [ 35.459933] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.464678] ? syscall_return_slowpath+0x550/0x550 [ 35.469577] ? syscall_return_slowpath+0x2ac/0x550 [ 35.474480] ? prepare_exit_to_usermode+0x350/0x350 [ 35.479471] ? sysret32_from_system_call+0x5/0x3c [ 35.484285] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.489115] entry_SYSENTER_compat+0x70/0x7f [ 35.493492] RIP: 0023:0xf7f18c99 [ 35.496833] RSP: 002b:00000000ffd17d8c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 35.504513] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 35.511759] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 35.519000] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 35.526510] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 35.533751] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 35.541001] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 2c 21 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 [ 35.560099] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801d2d3fc78 [ 35.566727] ---[ end trace 9372b6b7c663fc88 ]--- [ 35.571502] Kernel panic - not syncing: Fatal exception [ 35.577335] Dumping ftrace buffer: [ 35.580869] (ftrace buffer empty) [ 35.584561] Kernel Offset: disabled [ 35.588158] Rebooting in 86400 seconds..