[....] Starting enhanced syslogd: rsyslogd[ 16.303093] audit: type=1400 audit(1521610449.716:5): avc: denied { syslog } for pid=4073 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: [ 18.831009] audit: type=1400 audit(1521610452.244:6): avc: denied { map } for pid=4212 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 '10.128.0.48' (ECDSA) to the list of known hosts. executing program [ 27.274438] audit: type=1400 audit(1521610460.688:7): avc: denied { map } for pid=4227 comm="syzkaller689325" path="/root/syzkaller689325968" 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 [ 32.735160] kasan: CONFIG_KASAN_INLINE enabled [ 32.739879] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 32.747256] general protection fault: 0000 [#1] SMP KASAN [ 32.752776] Dumping ftrace buffer: [ 32.756286] (ftrace buffer empty) [ 32.759972] Modules linked in: [ 32.763147] CPU: 1 PID: 4227 Comm: syzkaller689325 Not tainted 4.16.0-rc6+ #361 [ 32.770564] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.779901] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 32.784977] RSP: 0018:ffff8801b0577cc8 EFLAGS: 00010206 [ 32.790320] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846006f4 [ 32.797568] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 32.804820] RBP: ffff8801b0577ce0 R08: 0000000000000000 R09: 1ffff100360aef15 [ 32.812066] R10: ffff8801b0577870 R11: 0000000000000001 R12: ffff8801b1c117d2 [ 32.819321] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b0577d58 [ 32.826608] FS: 0000000001702880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 32.834822] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 32.840690] CR2: ffffffffff600400 CR3: 00000001b5bfe003 CR4: 00000000001606e0 [ 32.847938] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 32.855184] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 32.862429] Call Trace: [ 32.865000] smc_shutdown+0x3ed/0x540 [ 32.868779] SyS_shutdown+0x137/0x290 [ 32.872555] ? SyS_getsockopt+0x340/0x340 [ 32.876678] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 32.882188] ? do_syscall_64+0xb7/0x940 [ 32.886134] ? SyS_getsockopt+0x340/0x340 [ 32.890255] do_syscall_64+0x281/0x940 [ 32.894117] ? __do_page_fault+0xc90/0xc90 [ 32.898326] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 32.903055] ? syscall_return_slowpath+0x550/0x550 [ 32.907958] ? syscall_return_slowpath+0x2ac/0x550 [ 32.912860] ? prepare_exit_to_usermode+0x350/0x350 [ 32.917853] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 32.923192] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.928024] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 32.933186] RIP: 0033:0x43fcb9 [ 32.936345] RSP: 002b:00007ffe4e804b48 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 32.944025] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 32.951270] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 32.958518] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 32.965760] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 32.973568] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 32.980824] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 0c 12 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 [ 32.999913] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b0577cc8 [ 33.006513] ---[ end trace c485486491113438 ]--- [ 33.011261] Kernel panic - not syncing: Fatal exception [ 33.016636] Dumping ftrace buffer: [ 33.020148] (ftrace buffer empty) [ 33.023842] Kernel Offset: disabled [ 33.027443] Rebooting in 86400 seconds..