[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[   30.128876] 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.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   31.751189] random: sshd: uninitialized urandom read (32 bytes read)
[   32.055921] random: sshd: uninitialized urandom read (32 bytes read)
[   32.577955] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.1.53' (ECDSA) to the list of known hosts.
[   38.223027] urandom_read: 1 callbacks suppressed
[   38.223032] random: sshd: uninitialized urandom read (32 bytes read)
executing program
[   38.342052] kauditd_printk_skb: 10 callbacks suppressed
[   38.342061] audit: type=1400 audit(1567895371.249:36): avc:  denied  { map } for  pid=6871 comm="syz-executor580" path="/root/syz-executor580423808" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
[   38.345321] kasan: CONFIG_KASAN_INLINE enabled
[   38.378972] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   38.386391] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   38.393326] Modules linked in:
[   38.396524] CPU: 0 PID: 6871 Comm: syz-executor580 Not tainted 4.14.142 #0
[   38.403517] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   38.412943] task: ffff88807a6e2540 task.stack: ffff8880a4f98000
[   38.418997] RIP: 0010:rb_erase+0x29/0x1c10
[   38.423212] RSP: 0018:ffff8880a4f9f9d0 EFLAGS: 00010282
[   38.428569] RAX: dffffc0000000000 RBX: ffff88808810d330 RCX: 1ffff110149f3f12
[   38.435833] RDX: 0000000000000001 RSI: ffffffff8924d940 RDI: 0000000000000008
[   38.443082] RBP: ffff8880a4f9fa18 R08: ffffffff88d17b2c R09: 0000000000001b46
[   38.450342] R10: ffff8880a4f9f7d0 R11: ffff88807a6e2540 R12: 0000000000000000
[   38.457784] R13: ffff888088115370 R14: 0000000000000000 R15: ffffffff867a3540
[   38.465068] FS:  0000000000d5a880(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000
[   38.473337] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   38.479227] CR2: 0000000020000704 CR3: 00000000a19f6000 CR4: 00000000001406f0
[   38.486486] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   38.493751] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   38.501090] Call Trace:
[   38.503671]  integrity_inode_free+0x126/0x320
[   38.508149]  security_inode_free+0x19/0x90
[   38.512397]  __destroy_inode+0x1ef/0x4e0
[   38.516438]  destroy_inode+0x50/0x120
[   38.520220]  evict+0x3e6/0x630
[   38.523414]  iput+0x471/0x900
[   38.526616]  ? ext4_nfs_commit_metadata+0x2f0/0x2f0
[   38.531694]  ext4_ioctl+0x16b0/0x3920
[   38.535491]  ? avc_ss_reset+0x110/0x110
[   38.539552]  ? kasan_slab_free+0x75/0xc0
[   38.543780]  ? ext4_ioctl_check_immutable+0x1c0/0x1c0
[   38.549039]  ? find_held_lock+0x35/0x130
[   38.553082]  ? debug_check_no_obj_freed+0x2aa/0x7b7
[   38.558194]  ? __might_sleep+0x93/0xb0
[   38.562077]  ? ext4_ioctl_check_immutable+0x1c0/0x1c0
[   38.567397]  do_vfs_ioctl+0x7ae/0x1060
[   38.571270]  ? selinux_file_mprotect+0x5d0/0x5d0
[   38.576109]  ? ioctl_preallocate+0x1c0/0x1c0
[   38.580505]  ? putname+0xe0/0x120
[   38.583937]  ? do_sys_open+0x221/0x430
[   38.587803]  ? security_file_ioctl+0x7d/0xb0
[   38.592189]  ? security_file_ioctl+0x89/0xb0
[   38.596675]  SyS_ioctl+0x8f/0xc0
[   38.600026]  ? do_vfs_ioctl+0x1060/0x1060
[   38.604249]  do_syscall_64+0x1e8/0x640
[   38.608395]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   38.613220]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   38.618388] RIP: 0033:0x440169
[   38.621574] RSP: 002b:00007ffd696e5eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   38.629852] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440169
[   38.637195] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000004
[   38.644453] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
[   38.651719] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004019f0
[   38.659237] R13: 0000000000401a80 R14: 0000000000000000 R15: 0000000000000000
[   38.666499] 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 
[   38.685690] RIP: rb_erase+0x29/0x1c10 RSP: ffff8880a4f9f9d0
[   38.691436] ---[ end trace c322d7f0e4788301 ]---
[   38.696201] Kernel panic - not syncing: Fatal exception
[   38.703274] Kernel Offset: disabled
[   38.706917] Rebooting in 86400 seconds..