[....] Starting enhanced syslogd: rsyslogd[ 13.379299] audit: type=1400 audit(1516203380.383:5): avc: denied { syslog } for pid=3498 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: [ 27.305150] audit: type=1400 audit(1516203394.308:6): avc: denied { map } for pid=3640 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 '10.128.15.224' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.315882] audit: type=1400 audit(1516203400.319:7): avc: denied { map } for pid=3654 comm="syzkaller332865" path="/root/syzkaller332865895" 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.554123] kasan: CONFIG_KASAN_INLINE enabled [ 36.558829] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 36.566231] general protection fault: 0000 [#1] SMP KASAN [ 36.571760] Dumping ftrace buffer: [ 36.575281] (ftrace buffer empty) [ 36.578971] Modules linked in: [ 36.582149] CPU: 0 PID: 4848 Comm: syzkaller332865 Not tainted 4.15.0-rc8+ #193 [ 36.589576] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.598923] RIP: 0010:strlen+0x1f/0xa0 [ 36.602791] RSP: 0018:ffff8801d4e27760 EFLAGS: 00010286 [ 36.608146] RAX: 00000000000000f4 RBX: ffff8801d6f1adc0 RCX: 000000000000001e [ 36.615404] RDX: dffffc0000000000 RSI: ffff8801d4efa480 RDI: 00000000000000f4 [ 36.623793] RBP: ffff8801d4e27778 R08: ffffffff84b03ad0 R09: 0000000000000004 [ 36.631320] R10: ffff8801d4e27920 R11: 0000000000000004 R12: ffff8801d4e27898 [ 36.638577] R13: 00000000000000f4 R14: 0000000000000040 R15: 1ffff1003a9c4ef7 [ 36.646010] FS: 00000000020b0880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 36.654217] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.660078] CR2: 000000002088cc98 CR3: 00000001d4c30005 CR4: 00000000001606f0 [ 36.667333] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.674589] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.681854] Call Trace: [ 36.684435] netlink_ack+0x120/0xa10 [ 36.688141] ? netlink_deliver_tap+0x2e9/0xf90 [ 36.692715] ? netlink_sendmsg+0xe60/0xe60 [ 36.696941] ? __might_fault+0x110/0x1d0 [ 36.700994] ? retint_kernel+0x10/0x10 [ 36.704874] netlink_rcv_skb+0x2d1/0x400 [ 36.708926] ? xfrm_dump_sa_done+0xe0/0xe0 [ 36.713489] ? netlink_ack+0xa10/0xa10 [ 36.717358] ? retint_kernel+0x10/0x10 [ 36.721344] xfrm_netlink_rcv+0x6f/0x90 [ 36.725305] netlink_unicast+0x4c4/0x6b0 [ 36.729354] ? netlink_attachskb+0x8a0/0x8a0 [ 36.733753] ? security_netlink_send+0x81/0xb0 [ 36.738323] netlink_sendmsg+0xa4a/0xe60 [ 36.742374] ? netlink_unicast+0x6b0/0x6b0 [ 36.746599] ? security_socket_sendmsg+0x89/0xb0 [ 36.751349] ? netlink_unicast+0x6b0/0x6b0 [ 36.755573] sock_sendmsg+0xca/0x110 [ 36.759277] ___sys_sendmsg+0x767/0x8b0 [ 36.763239] ? copy_msghdr_from_user+0x590/0x590 [ 36.767979] ? __do_page_fault+0x5f7/0xc90 [ 36.772200] ? lock_downgrade+0x980/0x980 [ 36.776341] ? __fget_light+0x297/0x380 [ 36.780299] ? fget_raw+0x20/0x20 [ 36.783748] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 36.788315] ? vmacache_find+0x5f/0x280 [ 36.792278] ? up_read+0x1a/0x40 [ 36.795638] ? __do_page_fault+0x3d6/0xc90 [ 36.799864] ? lock_release+0xa40/0xa40 [ 36.803837] ? __fdget+0x18/0x20 [ 36.807197] __sys_sendmsg+0xe5/0x210 [ 36.810987] ? __sys_sendmsg+0xe5/0x210 [ 36.814947] ? SyS_shutdown+0x290/0x290 [ 36.818901] ? __do_page_fault+0xc90/0xc90 [ 36.823121] ? SyS_setsockopt+0x215/0x360 [ 36.827262] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 36.832264] SyS_sendmsg+0x2d/0x50 [ 36.835783] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 36.840512] RIP: 0033:0x440c29 [ 36.843675] RSP: 002b:00007ffe01746f28 EFLAGS: 00000217 ORIG_RAX: 000000000000002e [ 36.851356] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 0000000000440c29 [ 36.858605] RDX: 0000000000000000 RSI: 0000000020f1efc8 RDI: 0000000000000003 [ 36.865848] RBP: 0000000000008ec5 R08: 0000000000000000 R09: 0000000000000000 [ 36.873093] R10: 00000000000000e8 R11: 0000000000000217 R12: 0000000000000000 [ 36.882790] R13: 0000000000402120 R14: 0000000000000000 R15: 0000000000000000 [ 36.891894] Code: 37 ff ff ff 0f 1f 84 00 00 00 00 00 55 48 89 f9 48 ba 00 00 00 00 00 fc ff df 48 c1 e9 03 48 89 f8 48 89 e5 41 54 53 48 83 ec 08 <0f> b6 14 11 48 89 f9 83 e1 07 38 ca 7f 04 84 d2 75 4b 80 38 00 [ 36.910978] RIP: strlen+0x1f/0xa0 RSP: ffff8801d4e27760 [ 36.916402] ---[ end trace ad163c865c8ffb7c ]--- [ 36.921510] Kernel panic - not syncing: Fatal exception [ 36.926903] Dumping ftrace buffer: [ 36.930424] (ftrace buffer empty) [ 36.934117] Kernel Offset: disabled [ 36.937731] Rebooting in 86400 seconds..