[....] Starting OpenBSD Secure Shell server: sshd[   27.615948] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   31.613118] random: sshd: uninitialized urandom read (32 bytes read)
[   31.826128] kauditd_printk_skb: 9 callbacks suppressed
[   31.826136] audit: type=1400 audit(1571609261.581:35): avc:  denied  { map } for  pid=6813 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
[   31.884774] random: sshd: uninitialized urandom read (32 bytes read)
[   32.388262] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.1.1' (ECDSA) to the list of known hosts.
[   38.111988] urandom_read: 1 callbacks suppressed
[   38.111993] random: sshd: uninitialized urandom read (32 bytes read)
executing program
[   38.227550] audit: type=1400 audit(1571609267.981:36): avc:  denied  { map } for  pid=6827 comm="syz-executor628" path="/root/syz-executor628696771" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
[   38.230912] kasan: CONFIG_KASAN_INLINE enabled
[   38.258543] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   38.266011] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   38.272289] Modules linked in:
[   38.275463] CPU: 0 PID: 6827 Comm: syz-executor628 Not tainted 4.14.150 #0
[   38.282450] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   38.291780] task: ffff88808937e000 task.stack: ffff8880a90e0000
[   38.297851] RIP: 0010:rb_erase+0x29/0x1c10
[   38.302060] RSP: 0018:ffff8880a90e79d0 EFLAGS: 00010282
[   38.307399] RAX: dffffc0000000000 RBX: ffff88809a194330 RCX: 1ffff1101521cf12
[   38.315078] RDX: 0000000000000001 RSI: ffffffff8924f900 RDI: 0000000000000008
[   38.322323] RBP: ffff8880a90e7a18 R08: ffffffff88d19b6c R09: 0000000000001be4
[   38.329569] R10: ffff8880a90e77d0 R11: ffff88808937e000 R12: 0000000000000000
[   38.336825] R13: ffff88809a196370 R14: 0000000000000000 R15: ffffffff867a36c0
[   38.344073] FS:  00000000016be880(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000
[   38.352273] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   38.358127] CR2: 000055c2220761a0 CR3: 000000008e0fc000 CR4: 00000000001406f0
[   38.365374] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   38.372618] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   38.379861] Call Trace:
[   38.382431]  integrity_inode_free+0x126/0x320
[   38.387011]  security_inode_free+0x19/0x90
[   38.391233]  __destroy_inode+0x1ef/0x4e0
[   38.395284]  destroy_inode+0x50/0x120
[   38.399059]  evict+0x3e6/0x630
[   38.402226]  iput+0x471/0x900
[   38.405307]  ? ext4_nfs_commit_metadata+0x2f0/0x2f0
[   38.410299]  ext4_ioctl+0x16b0/0x3920
[   38.414134]  ? avc_ss_reset+0x110/0x110
[   38.418105]  ? kasan_slab_free+0x75/0xc0
[   38.422188]  ? ext4_ioctl_check_immutable+0x1c0/0x1c0
[   38.427363]  ? find_held_lock+0x35/0x130
[   38.431405]  ? debug_check_no_obj_freed+0x2aa/0x7b7
[   38.436404]  ? __might_sleep+0x93/0xb0
[   38.440269]  ? ext4_ioctl_check_immutable+0x1c0/0x1c0
[   38.445434]  do_vfs_ioctl+0x7ae/0x1060
[   38.449298]  ? selinux_file_mprotect+0x5d0/0x5d0
[   38.454028]  ? ioctl_preallocate+0x1c0/0x1c0
[   38.458411]  ? putname+0xe0/0x120
[   38.461842]  ? do_sys_open+0x221/0x430
[   38.465707]  ? security_file_ioctl+0x7d/0xb0
[   38.470108]  ? security_file_ioctl+0x89/0xb0
[   38.474497]  SyS_ioctl+0x8f/0xc0
[   38.477850]  ? do_vfs_ioctl+0x1060/0x1060
[   38.481986]  do_syscall_64+0x1e8/0x640
[   38.485860]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   38.490733]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   38.495901] RIP: 0033:0x440149
[   38.499069] RSP: 002b:00007ffd39b47388 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   38.506753] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440149
[   38.514001] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003
[   38.521253] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
[   38.528507] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004019d0
[   38.535764] R13: 0000000000401a60 R14: 0000000000000000 R15: 0000000000000000
[   38.543018] 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 
[   38.562092] RIP: rb_erase+0x29/0x1c10 RSP: ffff8880a90e79d0
[   38.567839] ---[ end trace b74720bfc86af210 ]---
[   38.572684] Kernel panic - not syncing: Fatal exception
[   38.579188] Kernel Offset: disabled
[   38.582814] Rebooting in 86400 seconds..