[....] Starting file context maintaining daemon: restorecond[?2[ 20.800555] random: sshd: uninitialized urandom read (32 bytes read, 35 bits of entropy available) 5l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.053071] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 22.276816] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 23.205626] random: sshd: uninitialized urandom read (32 bytes read, 109 bits of entropy available) [ 23.370455] random: sshd: uninitialized urandom read (32 bytes read, 113 bits of entropy available) Warning: Permanently added '10.128.0.11' (ECDSA) to the list of known hosts. [ 28.733659] random: sshd: uninitialized urandom read (32 bytes read, 118 bits of entropy available) 2018/03/01 01:30:55 parsed 1 programs 2018/03/01 01:30:55 executed programs: 0 [ 29.099833] IPVS: Creating netns size=2552 id=1 [ 29.154447] IPVS: Creating netns size=2552 id=2 [ 29.194236] ------------[ cut here ]------------ [ 29.199017] WARNING: CPU: 0 PID: 3797 at kernel/locking/lockdep.c:728 __lock_acquire+0x3055/0x4b50() [ 29.208257] Kernel panic - not syncing: panic_on_warn set ... [ 29.208257] [ 29.215588] CPU: 0 PID: 3797 Comm: syz-executor4 Not tainted 4.4.119-g024f962 #27 [ 29.223175] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.232498] 0000000000000000 c1fbd012e424eec8 ffff8801c9db75b8 ffffffff81d0402d [ 29.240459] ffffffff83843b40 ffff8801c9db7690 ffffffff83855920 0000000000000009 [ 29.248437] 00000000000002d8 ffff8801c9db7680 ffffffff8141aaea 0000000041b58ab3 [ 29.256406] Call Trace: [ 29.258963] [] dump_stack+0xc1/0x124 [ 29.264298] [] panic+0x1aa/0x388 [ 29.269283] [] ? percpu_up_read.constprop.45+0xe1/0xe1 [ 29.276177] [] ? pm_qos_get_value.part.4+0xb/0xb [ 29.282550] [] ? update_cfs_rq_load_avg+0x5d5/0x1a90 [ 29.289274] [] ? warn_slowpath_common+0x10a/0x140 [ 29.295739] [] warn_slowpath_common+0x125/0x140 [ 29.302028] [] ? __lock_acquire+0x3055/0x4b50 [ 29.308145] [] warn_slowpath_null+0x29/0x30 [ 29.314087] [] __lock_acquire+0x3055/0x4b50 [ 29.320032] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 29.327021] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 29.334005] [] ? _raw_spin_unlock_irq+0x38/0x50 [ 29.340291] [] ? finish_task_switch+0x1e7/0x4e0 [ 29.346576] [] ? finish_task_switch+0x1bb/0x4e0 [ 29.352868] [] ? __schedule+0xa26/0x1ca0 [ 29.358551] [] lock_acquire+0x15e/0x460 [ 29.364149] [] ? lock_sock_nested+0x43/0x120 [ 29.370177] [] ? get_parent_ip+0xd/0x50 [ 29.375770] [] _raw_spin_lock_bh+0x3a/0x50 [ 29.381633] [] ? lock_sock_nested+0x43/0x120 [ 29.387668] [] lock_sock_nested+0x43/0x120 [ 29.393523] [] ? __might_fault+0x18e/0x1d0 [ 29.399386] [] do_ip_getsockopt+0x16a/0x1530 [ 29.405416] [] ? ip_ra_destroy_rcu+0x70/0x70 [ 29.411454] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 29.418439] [] ? __lock_acquire+0xb5f/0x4b50 [ 29.424469] [] ? avc_has_perm+0x296/0x500 [ 29.430233] [] ? avc_has_perm+0x309/0x500 [ 29.436000] [] ? avc_has_perm+0xb6/0x500 [ 29.441683] [] ? avc_has_perm_noaudit+0x460/0x460 [ 29.448146] [] ? sock_has_perm+0x1c1/0x400 [ 29.454003] [] ? sock_has_perm+0x29f/0x400 [ 29.459858] [] ? sock_has_perm+0x9f/0x400 [ 29.465634] [] compat_ip_getsockopt+0xa0/0x1c0 [ 29.471839] [] ? ip_getsockopt+0x180/0x180 [ 29.477702] [] ? __fget+0x213/0x3b0 [ 29.482948] [] compat_udp_getsockopt+0x45/0x80 [ 29.489151] [] compat_sock_common_getsockopt+0xb2/0x140 [ 29.496140] [] ? udp_getsockopt+0x80/0x80 [ 29.501920] [] compat_SyS_getsockopt+0x14f/0x2a0 [ 29.508304] [] ? sock_common_getsockopt+0xd0/0xd0 [ 29.514775] [] ? compat_SyS_setsockopt+0x290/0x290 [ 29.521329] [] ? do_fast_syscall_32+0xd7/0x8a0 [ 29.527531] [] ? compat_SyS_setsockopt+0x290/0x290 [ 29.534081] [] do_fast_syscall_32+0x321/0x8a0 [ 29.540203] [] sysenter_flags_fixed+0xd/0x17 [ 29.546660] Dumping ftrace buffer: [ 29.550177] (ftrace buffer empty) [ 29.553855] Kernel Offset: disabled [ 29.557448] Rebooting in 86400 seconds..