[....] Starting enhanced syslogd: rsyslogd[ 17.174854] audit: type=1400 audit(1520272705.657:5): avc: denied { syslog } for pid=4082 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: [ 22.832702] audit: type=1400 audit(1520272711.315:6): avc: denied { map } for pid=4222 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 '10.128.0.41' (ECDSA) to the list of known hosts. executing program [ 29.210804] audit: type=1400 audit(1520272717.693:7): avc: denied { map } for pid=4236 comm="syzkaller903575" path="/root/syzkaller903575186" 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 [ 34.272142] kasan: CONFIG_KASAN_INLINE enabled [ 34.276879] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.284266] general protection fault: 0000 [#1] SMP KASAN [ 34.289779] Dumping ftrace buffer: [ 34.293302] (ftrace buffer empty) [ 34.296993] Modules linked in: [ 34.300161] CPU: 1 PID: 4236 Comm: syzkaller903575 Not tainted 4.16.0-rc4+ #341 [ 34.307576] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.317085] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.322157] RSP: 0018:ffff8801ca40fcc8 EFLAGS: 00010206 [ 34.327490] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fc6f4 [ 34.334739] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.341999] RBP: ffff8801ca40fce0 R08: 0000000000000000 R09: 1ffff10039481f15 [ 34.349250] R10: ffff8801ca40f870 R11: 0000000000000001 R12: ffff8801b20137d2 [ 34.356503] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801ca40fd58 [ 34.363752] FS: 0000000000bf5880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 34.372124] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.377989] CR2: 00000000009515f0 CR3: 00000001b152f004 CR4: 00000000001606e0 [ 34.385243] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.392490] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.399741] Call Trace: [ 34.402311] smc_shutdown+0x3ed/0x540 [ 34.406088] SyS_shutdown+0x137/0x290 [ 34.409952] ? SyS_getsockopt+0x340/0x340 [ 34.414088] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.419610] ? do_syscall_64+0xb7/0x940 [ 34.423561] ? SyS_getsockopt+0x340/0x340 [ 34.427680] do_syscall_64+0x281/0x940 [ 34.431544] ? __do_page_fault+0xc90/0xc90 [ 34.435751] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.441187] ? syscall_return_slowpath+0x550/0x550 [ 34.446087] ? syscall_return_slowpath+0x2ac/0x550 [ 34.450990] ? prepare_exit_to_usermode+0x350/0x350 [ 34.455983] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 34.461465] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.466284] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 34.471446] RIP: 0033:0x43fcb9 [ 34.474880] RSP: 002b:00007ffca7caada8 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 34.482560] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 34.489917] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 34.497162] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 34.504421] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 34.511841] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 34.519101] 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 [ 34.538304] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801ca40fcc8 [ 34.544957] ---[ end trace ec64eaa3f8d08ded ]--- [ 34.551463] Kernel panic - not syncing: Fatal exception [ 34.557256] Dumping ftrace buffer: [ 34.560767] (ftrace buffer empty) [ 34.564449] Kernel Offset: disabled [ 34.568049] Rebooting in 86400 seconds..