[ 29.709675] random: sshd: uninitialized urandom read (32 bytes read) [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 29.867967] random: sshd: uninitialized urandom read (32 bytes read) [ 30.211469] random: sshd: uninitialized urandom read (32 bytes read) [ 30.743658] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 120.760332] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.23' (ECDSA) to the list of known hosts. [ 126.327662] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 126.442768] kauditd_printk_skb: 10 callbacks suppressed [ 126.442777] audit: type=1400 audit(1555758184.169:36): avc: denied { map } for pid=6881 comm="syz-executor604" path="/root/syz-executor604860572" dev="sda1" ino=1426 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 [ 127.296928] ------------[ cut here ]------------ [ 127.301898] WARNING: CPU: 1 PID: 7202 at drivers/media/v4l2-core/videobuf2-core.c:1663 __vb2_queue_cancel+0x5ab/0x8a0 [ 127.312634] Kernel panic - not syncing: panic_on_warn set ... [ 127.312634] [ 127.319989] CPU: 1 PID: 7202 Comm: syz-executor604 Not tainted 4.14.113 #3 [ 127.327002] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 127.336514] Call Trace: [ 127.339196] dump_stack+0x138/0x19c [ 127.342813] panic+0x1f2/0x438 [ 127.345981] ? add_taint.cold+0x16/0x16 [ 127.349938] ? __vb2_queue_cancel+0x5ab/0x8a0 [ 127.354426] ? __vb2_queue_cancel+0x5ab/0x8a0 [ 127.358904] __warn.cold+0x2f/0x34 [ 127.362528] ? ist_end_non_atomic+0x10/0x10 [ 127.366916] ? __vb2_queue_cancel+0x5ab/0x8a0 [ 127.371480] report_bug+0x216/0x254 [ 127.375151] do_error_trap+0x1bb/0x310 [ 127.379041] ? math_error+0x360/0x360 [ 127.382841] ? wait_for_completion_interruptible+0x490/0x490 [ 127.388758] ? check_preemption_disabled+0x3c/0x250 [ 127.393760] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 127.398589] do_invalid_op+0x1b/0x20 [ 127.402404] invalid_op+0x1b/0x40 [ 127.405843] RIP: 0010:__vb2_queue_cancel+0x5ab/0x8a0 [ 127.410935] RSP: 0018:ffff88807f49fae0 EFLAGS: 00010297 [ 127.416279] RAX: ffff88809f9d8700 RBX: ffffffff842c0050 RCX: 0000000000000000 [ 127.423674] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff88809eed3e2e [ 127.431059] RBP: ffff88807f49fb50 R08: ffff88809f9d8700 R09: 0000000000000001 [ 127.438315] R10: ffff88807f49fa40 R11: ffff88807f49f9c7 R12: ffff88809eed5d64 [ 127.445568] R13: ffff88809eed5e38 R14: ffff88809eed5e40 R15: ffff88809eed5b60 [ 127.452956] ? vid_cap_buf_queue+0x230/0x230 [ 127.457380] ? lock_downgrade+0x6e0/0x6e0 [ 127.461636] vb2_core_streamoff+0x52/0x110 [ 127.465959] __vb2_cleanup_fileio+0x78/0x150 [ 127.470355] vb2_core_queue_release+0x1d/0x80 [ 127.474828] _vb2_fop_release+0x1cf/0x2a0 [ 127.479052] vb2_fop_release+0x75/0xc0 [ 127.483061] vivid_fop_release+0x180/0x3f0 [ 127.487286] ? vivid_remove+0x3d0/0x3d0 [ 127.491437] ? dev_debug_store+0xe0/0xe0 [ 127.495486] v4l2_release+0xfb/0x190 [ 127.499187] __fput+0x277/0x7a0 [ 127.502451] ____fput+0x16/0x20 [ 127.505837] task_work_run+0x119/0x190 [ 127.509716] do_exit+0x7df/0x2c10 [ 127.513208] ? mm_update_next_owner+0x5d0/0x5d0 [ 127.518011] ? up_read+0x1a/0x40 [ 127.521369] ? __do_page_fault+0x358/0xb80 [ 127.525605] do_group_exit+0x111/0x330 [ 127.529484] SyS_exit_group+0x1d/0x20 [ 127.533321] ? do_group_exit+0x330/0x330 [ 127.537381] do_syscall_64+0x1eb/0x630 [ 127.541248] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 127.546090] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 127.551267] RIP: 0033:0x443f18 [ 127.554434] RSP: 002b:00007ffeea3790a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 127.562127] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000443f18 [ 127.569522] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 127.576792] RBP: 00000000004c42d0 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 127.584046] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000001 [ 127.591299] R13: 00000000006d6180 R14: 0000000000000000 R15: 0000000000000000 [ 127.599741] Kernel Offset: disabled [ 127.603517] Rebooting in 86400 seconds..