[....] Starting enhanced syslogd: rsyslogd[ 16.406576] audit: type=1400 audit(1520221462.782:5): avc: denied { syslog } for pid=4095 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: [ 18.714843] audit: type=1400 audit(1520221465.090:6): avc: denied { map } for pid=4233 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 '10.128.0.42' (ECDSA) to the list of known hosts. executing program [ 28.745504] audit: type=1400 audit(1520221475.121:7): avc: denied { map } for pid=4249 comm="syzkaller725978" path="/root/syzkaller725978617" 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 [ 33.760138] kasan: CONFIG_KASAN_INLINE enabled [ 33.764857] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.772429] general protection fault: 0000 [#1] SMP KASAN [ 33.777957] Dumping ftrace buffer: [ 33.781468] (ftrace buffer empty) [ 33.785149] Modules linked in: [ 33.788318] CPU: 1 PID: 4249 Comm: syzkaller725978 Not tainted 4.16.0-rc3+ #340 [ 33.795739] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.805077] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 33.810149] RSP: 0018:ffff8801b102fcc8 EFLAGS: 00010206 [ 33.815486] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fc6f4 [ 33.822728] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 33.829972] RBP: ffff8801b102fce0 R08: 0000000000000000 R09: 1ffff10036205f15 [ 33.837230] R10: ffff8801b102f870 R11: 0000000000000001 R12: ffff8801b28ed7d2 [ 33.844470] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b102fd58 [ 33.851712] FS: 0000000001da2880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 33.859910] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.865760] CR2: 0000000001715a88 CR3: 00000001b11c9004 CR4: 00000000001606e0 [ 33.873004] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.880249] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.887489] Call Trace: [ 33.890051] smc_shutdown+0x3ed/0x540 [ 33.893832] SyS_shutdown+0x137/0x290 [ 33.897607] ? SyS_getsockopt+0x340/0x340 [ 33.901728] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 33.907234] ? do_syscall_64+0xb7/0x940 [ 33.911181] ? SyS_getsockopt+0x340/0x340 [ 33.915298] do_syscall_64+0x281/0x940 [ 33.919155] ? __do_page_fault+0xc90/0xc90 [ 33.923361] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 33.928088] ? syscall_return_slowpath+0x550/0x550 [ 33.932987] ? syscall_return_slowpath+0x2ac/0x550 [ 33.937884] ? prepare_exit_to_usermode+0x350/0x350 [ 33.942872] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 33.948216] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.953033] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 33.958190] RIP: 0033:0x43fce9 [ 33.961351] RSP: 002b:00007fff136b4218 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 33.969038] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fce9 [ 33.976285] RDX: 000000000043fce9 RSI: 0000000000000000 RDI: 0000000000000003 [ 33.983530] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 33.990770] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401610 [ 33.998014] R13: 00000000004016a0 R14: 0000000000000000 R15: 0000000000000000 [ 34.005273] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 3c 3f 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 [ 34.024346] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b102fcc8 [ 34.030964] ---[ end trace a10043ca077a3098 ]--- [ 34.035714] Kernel panic - not syncing: Fatal exception [ 34.041482] Dumping ftrace buffer: [ 34.044992] (ftrace buffer empty) [ 34.048677] Kernel Offset: disabled [ 34.052278] Rebooting in 86400 seconds..