[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [ 10.588548] random: sshd: uninitialized urandom read (32 bytes read) [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 11.816155] random: crng init done Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.39' (ECDSA) to the list of known hosts. 2019/06/14 01:01:21 parsed 1 programs 2019/06/14 01:01:23 executed programs: 0 syzkaller login: [ 61.288811] audit: type=1400 audit(1560474084.010:5): avc: denied { associate } for pid=2086 comm="syz-executor.0" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 [ 61.307940] audit: type=1400 audit(1560474084.030:6): avc: denied { create } for pid=2238 comm="syz-executor.0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 61.327985] audit: type=1400 audit(1560474084.050:7): avc: denied { write } for pid=2238 comm="syz-executor.0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 61.356494] audit: type=1400 audit(1560474084.080:8): avc: denied { read } for pid=2238 comm="syz-executor.0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 62.108606] ------------[ cut here ]------------ [ 62.113441] WARNING: CPU: 0 PID: 2504 at net/ipv4/tcp.c:2193 tcp_close+0xd15/0x10a0 [ 62.121298] Kernel panic - not syncing: panic_on_warn set ... [ 62.121298] [ 62.128678] CPU: 0 PID: 2504 Comm: syz-executor.0 Not tainted 4.9.181+ #7 [ 62.135599] ffff8801c976fb90 ffffffff81b57db1 0000000000000000 ffffffff82a3a960 [ 62.143646] 00000000ffffffff 0000000000000000 0000000000000009 ffff8801c976fc70 [ 62.151728] ffffffff813fd56a 0000000041b58ab3 ffffffff82e311ea ffffffff813fd391 [ 62.159811] Call Trace: [ 62.162395] [<000000000bc98afa>] dump_stack+0xc1/0x120 [ 62.167753] [<000000004f02f18f>] panic+0x1d9/0x3bd [ 62.172761] [<000000005ed0a754>] ? add_taint.cold+0x16/0x16 [ 62.178570] [<00000000171d7e54>] ? __warn.cold+0x14/0x2f [ 62.184100] [<000000008a70e627>] ? tcp_close+0xd15/0x10a0 [ 62.189720] [<00000000ffc26756>] __warn.cold+0x2f/0x2f [ 62.195084] [<0000000037c7bb8c>] warn_slowpath_null+0x2d/0x40 [ 62.201048] [<000000008a70e627>] tcp_close+0xd15/0x10a0 [ 62.206497] [<00000000c5506731>] ? ip_mc_drop_socket+0x1d6/0x230 [ 62.212718] [<000000001eaaf02b>] inet_release+0xf2/0x1c0 [ 62.218251] [<00000000ac319bca>] inet6_release+0x53/0x80 [ 62.223807] [<00000000c1e7636f>] __sock_release+0xd3/0x2c0 [ 62.229511] [<000000007c080be6>] ? __sock_release+0x2c0/0x2c0 [ 62.235477] [<0000000011da64b0>] sock_close+0x1b/0x30 [ 62.240750] [<000000003be36271>] __fput+0x274/0x720 [ 62.245851] [<000000006dd57389>] ____fput+0x16/0x20 [ 62.250950] [<00000000ba988922>] task_work_run+0x108/0x180 [ 62.256663] [<000000001f4cf3a6>] exit_to_usermode_loop+0x13b/0x160 [ 62.263070] [<00000000805d5879>] do_syscall_64+0x3ab/0x5c0 [ 62.268775] [<00000000b39c76a7>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 62.276016] Kernel Offset: disabled [ 62.279655] Rebooting in 86400 seconds..