[....] Starting enhanced syslogd: rsyslogd[ 15.783324] audit: type=1400 audit(1519537776.152:5): avc: denied { syslog } for pid=4071 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 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: [ 17.912698] audit: type=1400 audit(1519537778.281:6): avc: denied { map } for pid=4209 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 '10.128.0.35' (ECDSA) to the list of known hosts. executing program [ 24.210609] audit: type=1400 audit(1519537784.579:7): avc: denied { map } for pid=4223 comm="syzkaller106773" path="/root/syzkaller106773302" 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 [ 29.663195] kasan: CONFIG_KASAN_INLINE enabled [ 29.667912] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.675298] general protection fault: 0000 [#1] SMP KASAN [ 29.680816] Dumping ftrace buffer: [ 29.684330] (ftrace buffer empty) [ 29.688029] Modules linked in: [ 29.691197] CPU: 0 PID: 4223 Comm: syzkaller106773 Not tainted 4.16.0-rc2+ #328 [ 29.698623] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.707958] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 29.713031] RSP: 0018:ffff8801b2d57cc8 EFLAGS: 00010206 [ 29.718365] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846026f4 [ 29.725604] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 29.732844] RBP: ffff8801b2d57ce0 R08: 0000000000000000 R09: 1ffff100365aaf15 [ 29.740087] R10: ffff8801b2d57870 R11: 0000000000000001 R12: ffff8801b32b57d2 [ 29.747328] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b2d57d58 [ 29.754572] FS: 0000000001ed4880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 29.762769] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.768620] CR2: 00007f93912a8000 CR3: 00000001cbdd2002 CR4: 00000000001606f0 [ 29.775872] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.783124] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.790363] Call Trace: [ 29.792938] smc_shutdown+0x3ed/0x540 [ 29.796715] SyS_shutdown+0x137/0x290 [ 29.800486] ? SyS_getsockopt+0x340/0x340 [ 29.804610] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 29.810116] ? do_syscall_64+0xb6/0x940 [ 29.814061] ? SyS_getsockopt+0x340/0x340 [ 29.818181] do_syscall_64+0x280/0x940 [ 29.822039] ? __do_page_fault+0xc90/0xc90 [ 29.826243] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 29.830967] ? syscall_return_slowpath+0x550/0x550 [ 29.835871] ? syscall_return_slowpath+0x2ac/0x550 [ 29.840772] ? prepare_exit_to_usermode+0x350/0x350 [ 29.845761] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 29.851099] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.855915] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 29.861075] RIP: 0033:0x43fcb9 [ 29.864234] RSP: 002b:00007ffc3a68c948 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 29.871912] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 29.879151] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 29.886403] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 29.893644] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 29.900883] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 29.908130] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ac e5 10 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 [ 29.927204] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b2d57cc8 [ 29.933837] ---[ end trace 4d2a9c2241109c10 ]--- [ 29.938602] Kernel panic - not syncing: Fatal exception [ 29.944424] Dumping ftrace buffer: [ 29.947943] (ftrace buffer empty) [ 29.951624] Kernel Offset: disabled [ 29.955224] Rebooting in 86400 seconds..