[....] Starting enhanced syslogd: rsyslogd[ 16.338489] audit: type=1400 audit(1519827841.798:5): avc: denied { syslog } for pid=4080 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: [ 19.158146] audit: type=1400 audit(1519827844.617:6): avc: denied { map } for pid=4221 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 '10.128.0.50' (ECDSA) to the list of known hosts. executing program [ 27.948803] audit: type=1400 audit(1519827853.408:7): avc: denied { map } for pid=4235 comm="syzkaller548549" path="/root/syzkaller548549894" 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 [ 33.248130] kasan: CONFIG_KASAN_INLINE enabled [ 33.252825] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.260346] general protection fault: 0000 [#1] SMP KASAN [ 33.265853] Dumping ftrace buffer: [ 33.269359] (ftrace buffer empty) [ 33.273042] Modules linked in: [ 33.276207] CPU: 0 PID: 4235 Comm: syzkaller548549 Not tainted 4.16.0-rc3+ #242 [ 33.283619] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.292948] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 33.298019] RSP: 0018:ffff8801d39dfc78 EFLAGS: 00010206 [ 33.303349] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fb6f4 [ 33.310586] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 33.317828] RBP: ffff8801d39dfc90 R08: 0000000000000000 R09: 1ffff1003a73bf0b [ 33.325064] R10: ffff8801d39df820 R11: 0000000000000001 R12: ffff8801b2c4b7d2 [ 33.332304] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801d39dfd08 [ 33.339545] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:000000000843a840 [ 33.347738] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 33.353590] CR2: 0000000000f67748 CR3: 00000001b6e37002 CR4: 00000000001606f0 [ 33.360830] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.368069] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.375306] Call Trace: [ 33.377865] smc_shutdown+0x3ed/0x540 [ 33.381637] SyS_shutdown+0x137/0x290 [ 33.385408] ? SyS_getsockopt+0x340/0x340 [ 33.389530] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 33.395034] ? do_fast_syscall_32+0x156/0xf9f [ 33.399499] ? SyS_getsockopt+0x340/0x340 [ 33.403614] do_fast_syscall_32+0x3ec/0xf9f [ 33.407904] ? do_int80_syscall_32+0x9c0/0x9c0 [ 33.412456] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 33.417180] ? syscall_return_slowpath+0x550/0x550 [ 33.422078] ? syscall_return_slowpath+0x2ac/0x550 [ 33.426974] ? prepare_exit_to_usermode+0x350/0x350 [ 33.431960] ? sysret32_from_system_call+0x5/0x3c [ 33.436771] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.441585] entry_SYSENTER_compat+0x70/0x7f [ 33.445958] RIP: 0023:0xf7f51c99 [ 33.449291] RSP: 002b:00000000ffc8894c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 33.456966] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 33.464202] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 33.471445] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 33.478681] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 33.485920] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 33.493164] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 4c 3d 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 [ 33.512228] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801d39dfc78 [ 33.518858] ---[ end trace 10f621ab9a08cec7 ]--- [ 33.523593] Kernel panic - not syncing: Fatal exception [ 33.529259] Dumping ftrace buffer: [ 33.532767] (ftrace buffer empty) [ 33.536447] Kernel Offset: disabled [ 33.540046] Rebooting in 86400 seconds..