[....] Starting enhanced syslogd: rsyslogd[ 16.540050] audit: type=1400 audit(1521500678.376:5): 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 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: [ 22.107491] audit: type=1400 audit(1521500683.944:6): 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 '10.128.0.22' (ECDSA) to the list of known hosts. executing program [ 28.410392] audit: type=1400 audit(1521500690.247:7): avc: denied { map } for pid=4238 comm="syzkaller110430" path="/root/syzkaller110430919" 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 [ 33.760341] kasan: CONFIG_KASAN_INLINE enabled [ 33.765038] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.772418] general protection fault: 0000 [#1] SMP KASAN [ 33.777933] Dumping ftrace buffer: [ 33.781444] (ftrace buffer empty) [ 33.785128] Modules linked in: [ 33.788294] CPU: 1 PID: 4238 Comm: syzkaller110430 Not tainted 4.16.0-rc6+ #359 [ 33.795731] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.805073] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 33.810154] RSP: 0018:ffff8801b0c7fcc8 EFLAGS: 00010206 [ 33.815489] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 33.822735] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 33.829985] RBP: ffff8801b0c7fce0 R08: 0000000000000000 R09: 1ffff1003618ff15 [ 33.837232] R10: ffff8801b0c7f870 R11: 0000000000000001 R12: ffff8801b16a27d2 [ 33.844476] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b0c7fd58 [ 33.851717] FS: 0000000001f41880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 33.859915] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.865768] CR2: 00007f7d366ad000 CR3: 00000001b1fab006 CR4: 00000000001606e0 [ 33.873023] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.880272] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.887513] Call Trace: [ 33.890077] smc_shutdown+0x3ed/0x540 [ 33.893849] SyS_shutdown+0x137/0x290 [ 33.897620] ? SyS_getsockopt+0x340/0x340 [ 33.901741] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 33.907256] ? do_syscall_64+0xb7/0x940 [ 33.911202] ? SyS_getsockopt+0x340/0x340 [ 33.915321] do_syscall_64+0x281/0x940 [ 33.919177] ? __do_page_fault+0xc90/0xc90 [ 33.923385] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 33.928891] ? syscall_return_slowpath+0x550/0x550 [ 33.933792] ? syscall_return_slowpath+0x2ac/0x550 [ 33.938696] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 33.944031] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.948847] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 33.954006] RIP: 0033:0x43fcb9 [ 33.957166] RSP: 002b:00007fffb1c9a308 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 33.964841] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 33.972082] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 33.979322] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 33.986562] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 33.993805] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 34.001054] 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 [ 34.020129] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b0c7fcc8 [ 34.026749] ---[ end trace 8f9d687c7fd221a3 ]--- [ 34.031496] Kernel panic - not syncing: Fatal exception [ 34.037216] Dumping ftrace buffer: [ 34.040728] (ftrace buffer empty) [ 34.044409] Kernel Offset: disabled [ 34.048007] Rebooting in 86400 seconds..