[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 19.072348] random: sshd: uninitialized urandom read (32 bytes read, 31 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.100457] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available) [ 21.410526] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available) [ 22.249735] random: sshd: uninitialized urandom read (32 bytes read, 112 bits of entropy available) [ 27.486432] random: sshd: uninitialized urandom read (32 bytes read, 120 bits of entropy available) Warning: Permanently added '10.128.15.212' (ECDSA) to the list of known hosts. [ 32.856386] random: sshd: uninitialized urandom read (32 bytes read, 125 bits of entropy available) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.406739] random: nonblocking pool is initialized executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 38.871614] kasan: CONFIG_KASAN_INLINE enabled [ 38.876150] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 38.900229] Dumping ftrace buffer: [ 38.903770] (ftrace buffer empty) [ 38.907635] Modules linked in: [ 38.910945] CPU: 1 PID: 6106 Comm: syzkaller258057 Not tainted 4.4.116-g17c7c49 #18 executing program executing program executing program executing program executing program executing program executing program [ 38.918722] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.928066] task: ffff8801d3c7c800 task.stack: ffff8800b64c0000 [ 38.934112] RIP: 0010:[] [] sg_read+0xd17/0x1490 [ 38.942204] RSP: 0018:ffff8800b64c7a80 EFLAGS: 00010246 [ 38.947643] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff825badce [ 38.954902] RDX: 0000000000000000 RSI: 00000000200001e4 RDI: ffff8800a985c370 [ 38.962163] RBP: ffff8800b64c7b88 R08: 0000000000000000 R09: 0000000000000000 executing program executing program executing program [ 38.969420] R10: 0000000000000000 R11: 1ffff10016c98f16 R12: 000000000000006c [ 38.976674] R13: 0000000000000000 R14: ffff8800b6f8d5a0 R15: ffff8800a985c340 [ 38.983933] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f76fbb40 [ 38.992148] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 38.998014] CR2: 00000000080fec6c CR3: 00000000b6b8e000 CR4: 0000000000160670 [ 39.005274] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.012530] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.019784] Stack: [ 39.021917] ffffffff8161b3d3 ffff8801da001500 00000000024000c0 ffff8800a985c358 [ 39.029944] ffff8800b93c2200 ffff8800a985c368 0000000000000090 0000000000000000 [ 39.037994] ffff8800b76fef00 0000000000001000 1ffff10016c98f5c 00000000200001e4 [ 39.046012] Call Trace: [ 39.048586] [] ? compat_rw_copy_check_uvector+0x83/0x340 [ 39.055676] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 39.062330] [] ? fsnotify+0xee0/0xee0 [ 39.067775] [] ? iov_iter_advance+0x164/0x4f0 [ 39.073911] [] do_loop_readv_writev+0x141/0x1e0 [ 39.080217] [] ? security_file_permission+0x89/0x1e0 [ 39.086963] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 39.093620] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 39.100371] [] compat_do_readv_writev+0x5df/0x6e0 [ 39.106853] [] ? vfs_writev+0xb0/0xb0 [ 39.112294] [] ? __fget+0x47/0x3b0 [ 39.117475] [] ? __fget+0x20b/0x3b0 [ 39.122741] [] ? __fget+0x232/0x3b0 [ 39.128001] [] ? __fget+0x47/0x3b0 [ 39.133177] [] compat_readv+0xd9/0x140 [ 39.138709] [] compat_SyS_readv+0xd8/0x1b0 [ 39.144583] [] ? SyS_pwritev+0x230/0x230 [ 39.150291] [] ? finish_task_switch+0x1e7/0x4e0 [ 39.156598] [] ? check_preemption_disabled+0x3b/0x200 [ 39.163484] [] ? SyS_pwritev+0x230/0x230 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 39.169185] [] do_fast_syscall_32+0x314/0x890 [ 39.175321] [] sysenter_flags_fixed+0xd/0x17 [ 39.181361] 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 [ 39.208778] RIP [] sg_read+0xd17/0x1490 [ 39.214524] RSP executing program executing program executing program executing program executing program executing program [ 39.332362] ---[ end trace 6afc72b21210b9a3 ]--- [ 39.337174] Kernel panic - not syncing: Fatal exception [ 39.343077] Dumping ftrace buffer: [ 39.346598] (ftrace buffer empty) [ 39.350277] Kernel Offset: disabled [ 39.353876] Rebooting in 86400 seconds..