[....] Starting file context mai[ 16.031534] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) ntaining 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: [ 20.429611] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 20.874183] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 21.670815] random: sshd: uninitialized urandom read (32 bytes read, 98 bits of entropy available) [ 24.218440] random: sshd: uninitialized urandom read (32 bytes read, 105 bits of entropy available) Warning: Permanently added 'ci-android-44-kasan-gce-386-4,10.128.0.77' (ECDSA) to the list of known hosts. [ 29.599465] random: sshd: uninitialized urandom read (32 bytes read, 112 bits of entropy available) executing program [ 29.697133] kasan: CONFIG_KASAN_INLINE enabled [ 29.702161] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 29.714978] Dumping ftrace buffer: [ 29.718480] (ftrace buffer empty) [ 29.722156] Modules linked in: [ 29.725423] CPU: 1 PID: 3314 Comm: syzkaller676486 Not tainted 4.4.107-g610c835 #4 [ 29.733093] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.742414] task: ffff8800b59d2f80 task.stack: ffff8801d05e0000 [ 29.748435] RIP: 0010:[] [] sg_read+0xd1d/0x1490 [ 29.756491] RSP: 0018:ffff8801d05e7a80 EFLAGS: 00010246 [ 29.761923] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff825bb194 [ 29.769162] RDX: 0000000000000000 RSI: 0000000020c4afe5 RDI: ffff8800b0ebc370 [ 29.776398] RBP: ffff8801d05e7b88 R08: 8551c99c2a45b4bd R09: 0000000000000001 [ 29.783633] R10: 0000000000000000 R11: 1ffff1003a0bcf16 R12: 0000000000000093 [ 29.790868] R13: 0000000000000000 R14: ffff8800b4bcec60 R15: ffff8800b0ebc340 [ 29.798103] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f76e5b40 [ 29.806296] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 29.812145] CR2: 0000000020c4afc1 CR3: 00000000b5938000 CR4: 00000000001406e0 [ 29.819382] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.826618] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.833855] Stack: [ 29.835973] ffffffff810dbb17 ffffffff83775058 ffff8800b59d2f80 ffff8800b0ebc358 [ 29.843944] 000000000000028a ffff8800b0ebc368 00000000000000b7 0000000000000002 [ 29.851914] ffff8800b7eaac80 0000000000001000 1ffff1003a0bcf5c 0000000020c4afe5 [ 29.859860] Call Trace: [ 29.862416] [] ? do_page_fault+0x27/0x30 [ 29.868094] [] ? page_fault+0x28/0x30 [ 29.873515] [] ? sg_proc_seq_show_debug+0xd30/0xd30 [ 29.880155] [] ? fsnotify+0xee0/0xee0 [ 29.885583] [] ? avc_policy_seqno+0x9/0x20 [ 29.891435] [] do_loop_readv_writev+0x141/0x1e0 [ 29.897719] [] ? security_file_permission+0x89/0x1e0 [ 29.904451] [] ? sg_proc_seq_show_debug+0xd30/0xd30 [ 29.911083] [] ? sg_proc_seq_show_debug+0xd30/0xd30 [ 29.917714] [] compat_do_readv_writev+0x5df/0x6e0 [ 29.924169] [] ? vfs_writev+0xb0/0xb0 [ 29.929585] [] ? __fget+0x232/0x3b0 [ 29.934824] [] ? __fget+0x47/0x3b0 [ 29.939977] [] compat_readv+0xd9/0x140 [ 29.945478] [] compat_SyS_readv+0xd8/0x1b0 [ 29.951631] [] ? SyS_pwritev+0x230/0x230 [ 29.957307] [] ? vmacache_update+0xfe/0x130 [ 29.963246] [] ? do_fast_syscall_32+0xd7/0x890 [ 29.969442] [] ? SyS_pwritev+0x230/0x230 [ 29.975116] [] do_fast_syscall_32+0x314/0x890 [ 29.981229] [] sysenter_flags_fixed+0xd/0x17 executing program [ 29.987248] Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 97 06 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 28 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 6b 06 00 00 48 8b 1b 48 85 db 0f 84 3b 03 00 [ 30.013572] RIP [] sg_read+0xd1d/0x1490 [ 30.019275] RSP [ 30.022958] ---[ end trace c703867fd7629bbe ]--- [ 30.027693] Kernel panic - not syncing: Fatal exception [ 30.033050] Dumping ftrace buffer: [ 30.036557] (ftrace buffer empty) [ 30.040232] Kernel Offset: disabled [ 30.043823] Rebooting in 86400 seconds..