[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   15.582204] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   20.558861] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available)
[   20.999926] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
[   21.837369] random: sshd: uninitialized urandom read (32 bytes read, 99 bits of entropy available)
[   22.010523] random: sshd: uninitialized urandom read (32 bytes read, 104 bits of entropy available)
Warning: Permanently added '10.128.0.35' (ECDSA) to the list of known hosts.
[   27.395080] random: sshd: uninitialized urandom read (32 bytes read, 111 bits of entropy available)
executing program
[   27.493096] sg_write: data in/out 8454115/514 bytes for SCSI command 0x0-- guessing data in;
[   27.493096]    program syzkaller357304 not setting count and/or reply_len properly
[   27.510629] kasan: CONFIG_KASAN_INLINE enabled
[   27.515035] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   27.527851] Dumping ftrace buffer:
[   27.531356]    (ftrace buffer empty)
[   27.535034] Modules linked in:
[   27.538309] CPU: 0 PID: 3313 Comm: syzkaller357304 Not tainted 4.4.112-gca0ebb4 #29
[   27.546067] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   27.555387] task: ffff8801d19e4740 task.stack: ffff8801d53a0000
[   27.561418] RIP: 0010:[<ffffffff825bcb8d>]  [<ffffffff825bcb8d>] sg_read+0xd1d/0x1490
[   27.569488] RSP: 0018:ffff8801d53a7b00  EFLAGS: 00010246
[   27.574918] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff825bcb54
[   27.582156] RDX: 0000000000000000 RSI: 0000000020f93fef RDI: ffff8800b6408170
[   27.589393] RBP: ffff8801d53a7c08 R08: 0000000000000000 R09: 0000000000000001
[   27.596630] R10: 0000000000000000 R11: 1ffff1003aa74f26 R12: 000000000000001a
[   27.603868] R13: 0000000000000000 R14: ffff8801d217af00 R15: ffff8800b6408140
[   27.611108] FS:  0000000001ec8880(0063) GS:ffff8801db200000(0000) knlGS:0000000000000000
[   27.619300] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   27.625147] CR2: 0000000020f93fcb CR3: 00000001d0d6e000 CR4: 0000000000160670
[   27.632387] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   27.639637] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   27.646880] Stack:
[   27.648996]  0000000000000000 000077ff80000000 ffff8801d53a7b60 ffff8800b6408158
[   27.656968]  0000000000000008 ffff8800b6408168 000000000000003e 0000000000000001
[   27.664923]  ffff8801d500d180 0000000000001000 1ffff1003aa74f6c 0000000020f93fef
[   27.672883] Call Trace:
[   27.675453]  [<ffffffff825bbe70>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   27.682083]  [<ffffffff815ea0d0>] ? fsnotify+0xee0/0xee0
[   27.687502]  [<ffffffff81b4e569>] ? avc_policy_seqno+0x9/0x20
[   27.693356]  [<ffffffff8151d171>] do_loop_readv_writev+0x141/0x1e0
[   27.699640]  [<ffffffff81b45459>] ? security_file_permission+0x89/0x1e0
[   27.706359]  [<ffffffff825bbe70>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   27.712992]  [<ffffffff825bbe70>] ? sg_proc_seq_show_debug+0xd30/0xd30
[   27.719625]  [<ffffffff8151f4cd>] do_readv_writev+0x5dd/0x6e0
[   27.725476]  [<ffffffff8151eef0>] ? vfs_write+0x530/0x530
[   27.730980]  [<ffffffff837758bc>] ? _raw_spin_unlock+0x2c/0x50
[   27.736917]  [<ffffffff8150da8d>] ? do_huge_pmd_anonymous_page+0x3dd/0xa10
[   27.743896]  [<ffffffff8149fe02>] ? handle_mm_fault+0x3f2/0x3190
[   27.750010]  [<ffffffff81235bcb>] ? trace_hardirqs_on_caller+0x38b/0x590
[   27.756815]  [<ffffffff81b4e569>] ? avc_policy_seqno+0x9/0x20
[   27.762665]  [<ffffffff81b5fc58>] ? selinux_file_permission+0x348/0x460
[   27.769384]  [<ffffffff8151f648>] vfs_readv+0x78/0xb0
[   27.774540]  [<ffffffff81521999>] SyS_readv+0xd9/0x240
[   27.779781]  [<ffffffff815218c0>] ? rw_copy_check_uvector+0x2d0/0x2d0
[   27.786327]  [<ffffffff81003017>] ? trace_hardirqs_on_thunk+0x17/0x19
[   27.792872]  [<ffffffff837763d9>] entry_SYSCALL_64_fastpath+0x16/0x92
[   27.799415] 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 
[   27.825956] RIP  [<ffffffff825bcb8d>] sg_read+0xd1d/0x1490
[   27.831666]  RSP <ffff8801d53a7b00>
[   27.835564] ---[ end trace 9365f607c671e59e ]---
[   27.840302] Kernel panic - not syncing: Fatal exception
[   27.846105] Dumping ftrace buffer:
[   27.849617]    (ftrace buffer empty)
[   27.853297] Kernel Offset: disabled
[   27.856900] Rebooting in 86400 seconds..