[....] Starting OpenBSD Secure Shell server: sshd[ 20.702421] random: sshd: uninitialized urandom read (32 bytes read, 35 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 25.713585] random: sshd: uninitialized urandom read (32 bytes read, 42 bits of entropy available) [ 26.009751] random: sshd: uninitialized urandom read (32 bytes read, 42 bits of entropy available) [ 26.978403] random: sshd: uninitialized urandom read (32 bytes read, 125 bits of entropy available) [ 27.136507] random: sshd: uninitialized urandom read (32 bytes read, 128 bits of entropy available) [ 27.151551] random: nonblocking pool is initialized Warning: Permanently added '10.128.10.6' (ECDSA) to the list of known hosts. 2018/03/01 01:48:57 parsed 1 programs 2018/03/01 01:48:57 executed programs: 0 [ 32.845029] IPVS: Creating netns size=2552 id=1 [ 32.875620] kasan: CONFIG_KASAN_INLINE enabled [ 32.880032] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 32.892951] Dumping ftrace buffer: [ 32.896458] (ftrace buffer empty) [ 32.900138] Modules linked in: [ 32.903417] CPU: 1 PID: 3788 Comm: syz-executor0 Not tainted 4.4.119-g024f962 #27 [ 32.911009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.920331] task: ffff8801c6334800 task.stack: ffff8800bacf8000 [ 32.926708] RIP: 0010:[] [] sg_read+0xd17/0x1490 [ 32.934767] RSP: 0018:ffff8800bacffb50 EFLAGS: 00010246 [ 32.940180] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff825baa9e [ 32.947416] RDX: 0000000000000000 RSI: 00000000200004e4 RDI: ffff8800bbb08170 [ 32.954655] RBP: ffff8800bacffc58 R08: 0000000000000000 R09: 0000000000000001 [ 32.961900] R10: 0000000000000000 R11: 1ffff1001759ff30 R12: 0000000000000060 [ 32.969144] R13: 0000000000000000 R14: ffff8801d4fd2b40 R15: ffff8800bbb08140 [ 32.976382] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000009df2900 [ 32.984574] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 32.990424] CR2: 0000000008138024 CR3: 00000000b0530000 CR4: 0000000000160670 [ 32.997665] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.004902] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.012137] Stack: [ 33.014252] 00000000000000d7 ffff8801d940b338 0000000000000003 ffff8800bbb08158 [ 33.022224] 3d92cf3beac6b5a2 ffff8800bbb08168 0000000000000084 0000000000000000 [ 33.030184] ffff8800b7661b80 0000000000001000 1ffff1001759ff76 00000000200004e4 [ 33.038142] Call Trace: [ 33.040698] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 33.047334] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 33.053970] [] __vfs_read+0x103/0x440 [ 33.059389] [] ? vfs_iter_write+0x2d0/0x2d0 [ 33.065327] [] ? fsnotify+0x5ad/0xee0 [ 33.070744] [] ? fsnotify+0xee0/0xee0 [ 33.076163] [] ? compat_SyS_ioctl+0x117/0x2540 [ 33.082362] [] ? avc_policy_seqno+0x9/0x20 [ 33.088213] [] ? selinux_file_permission+0x348/0x460 [ 33.094936] [] ? security_file_permission+0x89/0x1e0 [ 33.101655] [] ? rw_verify_area+0x100/0x2f0 [ 33.107594] [] vfs_read+0x123/0x3a0 [ 33.112838] [] SyS_read+0xd9/0x1b0 [ 33.117993] [] ? do_sendfile+0xd30/0xd30 [ 33.123672] [] ? do_fast_syscall_32+0xd7/0x8a0 [ 33.129876] [] ? do_sendfile+0xd30/0xd30 [ 33.135561] [] do_fast_syscall_32+0x321/0x8a0 [ 33.141676] [] sysenter_flags_fixed+0xd/0x17 [ 33.147700] 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 [ 33.174237] RIP [] sg_read+0xd17/0x1490 [ 33.179944] RSP [ 33.183760] ---[ end trace ee47ecda1d7f3085 ]--- [ 33.188500] Kernel panic - not syncing: Fatal exception [ 33.194294] Dumping ftrace buffer: [ 33.197806] (ftrace buffer empty) [ 33.201487] Kernel Offset: disabled [ 33.205079] Rebooting in 86400 seconds..