[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   33.840695] random: sshd: uninitialized urandom read (32 bytes read)
[   34.168643] kauditd_printk_skb: 9 callbacks suppressed
[   34.168652] audit: type=1400 audit(1556451773.075:35): avc:  denied  { map } for  pid=6827 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1
[   34.212238] random: sshd: uninitialized urandom read (32 bytes read)
[   34.763140] random: sshd: uninitialized urandom read (32 bytes read)
[   34.958288] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.82' (ECDSA) to the list of known hosts.
[   40.548836] random: sshd: uninitialized urandom read (32 bytes read)
executing program
[   40.662348] audit: type=1400 audit(1556451779.575:36): avc:  denied  { map } for  pid=6840 comm="syz-executor435" path="/root/syz-executor435459301" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
[   40.665377] kasan: CONFIG_KASAN_INLINE enabled
[   40.700611] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   40.707986] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   40.714206] Modules linked in:
[   40.717392] CPU: 1 PID: 6840 Comm: syz-executor435 Not tainted 4.14.114 #4
[   40.724402] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   40.733742] task: ffff88808b35a080 task.stack: ffff88808ac08000
[   40.740063] RIP: 0010:rb_erase+0x29/0x1c10
[   40.744281] RSP: 0018:ffff88808ac0f9d0 EFLAGS: 00010282
[   40.749806] RAX: dffffc0000000000 RBX: ffff88809a1bf3f0 RCX: 1ffff11011581f12
[   40.757374] RDX: 0000000000000001 RSI: ffffffff89247900 RDI: 0000000000000008
[   40.764634] RBP: ffff88808ac0fa18 R08: ffffffff88d11aac R09: 0000000000001b62
[   40.771897] R10: ffff88808ac0f7d0 R11: ffff88808b35a080 R12: 0000000000000000
[   40.779149] R13: ffff88809a1c0430 R14: 0000000000000000 R15: ffffffff867a2940
[   40.786402] FS:  000000000235e880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000
[   40.796170] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   40.803568] CR2: 0000561c9befd190 CR3: 0000000095486000 CR4: 00000000001406e0
[   40.810832] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   40.818096] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   40.825464] Call Trace:
[   40.828148]  integrity_inode_free+0x126/0x320
[   40.832629]  security_inode_free+0x19/0x90
[   40.836856]  __destroy_inode+0x1ef/0x4e0
[   40.840905]  destroy_inode+0x50/0x130
[   40.844796]  evict+0x3e9/0x630
[   40.847971]  iput+0x476/0x900
[   40.851064]  ? ext4_nfs_commit_metadata+0x2f0/0x2f0
[   40.856081]  ext4_ioctl+0x16bb/0x39b0
[   40.859894]  ? avc_ss_reset+0x110/0x110
[   40.863865]  ? kmem_cache_free+0x83/0x2b0
[   40.868014]  ? ext4_ioctl_setflags+0x5d0/0x5d0
[   40.872582]  ? debug_check_no_obj_freed+0x2aa/0x7b7
[   40.877794]  ? __might_sleep+0x93/0xb0
[   40.881669]  ? ext4_ioctl_setflags+0x5d0/0x5d0
[   40.886244]  do_vfs_ioctl+0x7b9/0x1070
[   40.890127]  ? selinux_file_mprotect+0x5d0/0x5d0
[   40.894893]  ? kmem_cache_free+0x247/0x2b0
[   40.899111]  ? ioctl_preallocate+0x1c0/0x1c0
[   40.903552]  ? putname+0xe0/0x120
[   40.906999]  ? do_sys_open+0x221/0x430
[   40.910882]  ? security_file_ioctl+0x83/0xc0
[   40.915282]  ? security_file_ioctl+0x8f/0xc0
[   40.919686]  SyS_ioctl+0x8f/0xc0
[   40.923052]  ? do_vfs_ioctl+0x1070/0x1070
[   40.927190]  do_syscall_64+0x1eb/0x630
[   40.931060]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   40.935912]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   40.941209] RIP: 0033:0x4401d9
[   40.944384] RSP: 002b:00007fffb20e64b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   40.952226] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9
[   40.959490] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003
[   40.966754] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
[   40.974007] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60
[   40.981265] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000
[   40.988519] Code: 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 57 41 56 49 89 fe 48 83 c7 08 48 89 fa 41 55 48 c1 ea 03 41 54 53 48 83 ec 20 <80> 3c 02 00 0f 85 0c 11 00 00 49 8d 7e 10 4d 8b 7e 08 48 b8 00 
[   41.007711] RIP: rb_erase+0x29/0x1c10 RSP: ffff88808ac0f9d0
[   41.013557] ---[ end trace da46869eed0a305e ]---
[   41.018315] Kernel panic - not syncing: Fatal exception
[   41.024800] Kernel Offset: disabled
[   41.028423] Rebooting in 86400 seconds..