[   29.209152] random: sshd: uninitialized urandom read (32 bytes read)
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.
[   30.115009] random: sshd: uninitialized urandom read (32 bytes read)
[   30.318505] random: sshd: uninitialized urandom read (32 bytes read)

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   30.908590] random: sshd: uninitialized urandom read (32 bytes read)
[   31.086601] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.250' (ECDSA) to the list of known hosts.
[   36.565770] random: sshd: uninitialized urandom read (32 bytes read)
executing program
[   36.679820] kauditd_printk_skb: 10 callbacks suppressed
[   36.679829] audit: type=1400 audit(1567497899.798:36): avc:  denied  { map } for  pid=6873 comm="syz-executor790" path="/root/syz-executor790230842" 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
[   36.683660] kasan: CONFIG_KASAN_INLINE enabled
[   36.716268] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   36.723817] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   36.730063] Modules linked in:
[   36.733247] CPU: 1 PID: 6873 Comm: syz-executor790 Not tainted 4.14.141 #37
[   36.740329] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   36.749661] task: ffff888097470240 task.stack: ffff888089b28000
[   36.755703] RIP: 0010:rb_erase+0x29/0x1c10
[   36.759913] RSP: 0018:ffff888089b2f9d0 EFLAGS: 00010282
[   36.765270] RAX: dffffc0000000000 RBX: ffff888087e7b230 RCX: 1ffff11011365f12
[   36.772519] RDX: 0000000000000001 RSI: ffffffff8924d940 RDI: 0000000000000008
[   36.779784] RBP: ffff888089b2fa18 R08: ffffffff88d17b2c R09: 0000000000001b38
[   36.787048] R10: ffff888089b2f7d0 R11: ffff888097470240 R12: 0000000000000000
[   36.794315] R13: ffff888087e903b0 R14: 0000000000000000 R15: ffffffff867a3540
[   36.801564] FS:  000000000131c880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000
[   36.809781] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   36.815655] CR2: 0000558a949471b0 CR3: 00000000854ce000 CR4: 00000000001406e0
[   36.822907] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   36.830172] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   36.837424] Call Trace:
[   36.839997]  integrity_inode_free+0x126/0x320
[   36.844484]  security_inode_free+0x19/0x90
[   36.848694]  __destroy_inode+0x1ef/0x4e0
[   36.852731]  destroy_inode+0x50/0x120
[   36.856507]  evict+0x3e6/0x630
[   36.859679]  iput+0x471/0x900
[   36.862762]  ? ext4_nfs_commit_metadata+0x2f0/0x2f0
[   36.867754]  ext4_ioctl+0x16b0/0x3920
[   36.871597]  ? avc_ss_reset+0x110/0x110
[   36.875549]  ? kasan_slab_free+0x75/0xc0
[   36.879587]  ? ext4_ioctl_check_immutable+0x1c0/0x1c0
[   36.884756]  ? find_held_lock+0x35/0x130
[   36.888793]  ? debug_check_no_obj_freed+0x2aa/0x7b7
[   36.893794]  ? __might_sleep+0x93/0xb0
[   36.897661]  ? ext4_ioctl_check_immutable+0x1c0/0x1c0
[   36.902826]  do_vfs_ioctl+0x7ae/0x1060
[   36.906689]  ? selinux_file_mprotect+0x5d0/0x5d0
[   36.911421]  ? ioctl_preallocate+0x1c0/0x1c0
[   36.915817]  ? putname+0xe0/0x120
[   36.919249]  ? do_sys_open+0x221/0x430
[   36.923563]  ? security_file_ioctl+0x7d/0xb0
[   36.927949]  ? security_file_ioctl+0x89/0xb0
[   36.932337]  SyS_ioctl+0x8f/0xc0
[   36.935681]  ? do_vfs_ioctl+0x1060/0x1060
[   36.939807]  do_syscall_64+0x1e8/0x640
[   36.943684]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   36.948506]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   36.953677] RIP: 0033:0x440149
[   36.956857] RSP: 002b:00007ffd56e6fc18 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   36.964542] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440149
[   36.971790] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003
[   36.979038] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
[   36.986289] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004019d0
[   36.993550] R13: 0000000000401a60 R14: 0000000000000000 R15: 0000000000000000
[   37.000800] 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 
[   37.019870] RIP: rb_erase+0x29/0x1c10 RSP: ffff888089b2f9d0
[   37.026024] ---[ end trace 36fc68ca4e7ea14a ]---
[   37.030829] Kernel panic - not syncing: Fatal exception
[   37.037593] Kernel Offset: disabled
[   37.041211] Rebooting in 86400 seconds..