[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting OpenBSD Secure Shell server: sshd[ 9.254281] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 12.816567] random: sshd: uninitialized urandom read (32 bytes read) [ 13.026880] random: sshd: uninitialized urandom read (32 bytes read) [ 13.258688] random: crng init done Warning: Permanently added '10.128.0.59' (ECDSA) to the list of known hosts. 2019/10/20 21:52:56 parsed 1 programs 2019/10/20 21:52:58 executed programs: 0 [ 46.107086] audit: type=1400 audit(1571608378.869:5): avc: denied { associate } for pid=2072 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 [ 48.156108] ------------[ cut here ]------------ [ 48.160914] WARNING: CPU: 0 PID: 3072 at net/ipv4/tcp.c:2193 tcp_close+0xced/0x1070 [ 48.168710] Kernel panic - not syncing: panic_on_warn set ... [ 48.168710] [ 48.176055] CPU: 0 PID: 3072 Comm: syz-executor.0 Not tainted 4.9.141+ #23 [ 48.183052] ffff8801d789fbb0 ffffffff81b42e79 ffffffff82a38ce0 00000000ffffffff [ 48.191104] ffffffff82ca3800 0000000000000000 0000000000000009 ffff8801d789fc70 [ 48.199195] ffffffff813f7125 0000000041b58ab3 ffffffff82e2b62b ffffffff813f6f66 [ 48.207249] Call Trace: [ 48.209824] [] dump_stack+0xc1/0x128 [ 48.215171] [] panic+0x1bf/0x39f [ 48.220170] [] ? add_taint.cold.5+0x16/0x16 [ 48.226132] [] ? __warn.cold.8+0x14/0x2f [ 48.231820] [] ? tcp_close+0xced/0x1070 [ 48.237422] [] __warn.cold.8+0x2f/0x2f [ 48.243024] [] warn_slowpath_null+0x2c/0x40 [ 48.248971] [] tcp_close+0xced/0x1070 [ 48.254399] [] ? ip_mc_drop_socket+0x1d3/0x230 [ 48.260607] [] inet_release+0xff/0x1d0 [ 48.266123] [] inet6_release+0x50/0x70 [ 48.271639] [] __sock_release+0xd7/0x260 [ 48.277327] [] ? __sock_release+0x260/0x260 [ 48.283274] [] sock_close+0x19/0x20 [ 48.288539] [] __fput+0x263/0x700 [ 48.293621] [] ____fput+0x15/0x20 [ 48.298702] [] task_work_run+0x10c/0x180 [ 48.304391] [] exit_to_usermode_loop+0x129/0x150 [ 48.310776] [] do_fast_syscall_32+0x6dc/0xa10 [ 48.316915] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.323560] [] entry_SYSENTER_compat+0x90/0xa2 [ 48.330399] Kernel Offset: disabled [ 48.334021] Rebooting in 86400 seconds..