random: sshd: uninitialized urandom read (32 bytes read, 101 bits of entropy available)
==================================================================
BUG: KASAN: slab-out-of-bounds in list_empty include/linux/list.h:189 [inline]
BUG: KASAN: slab-out-of-bounds in sg_remove_request+0xf9/0x110 drivers/scsi/sg.c:2120
Read of size 8 at addr ffff8801d1bda140 by task syzkaller210785/3324

CPU: 0 PID: 3324 Comm: syzkaller210785 Not tainted 4.4.113-ge70c132 #34
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 bfe6495c8f134624 ffff8801d06e79f0 ffffffff81d0278d
 ffffea000746f680 ffff8801d1bda140 0000000000000000 ffff8801d1bda140
 ffff8801d0674438 ffff8801d06e7a28 ffffffff814fd053 ffff8801d1bda140
Call Trace:
 [<ffffffff81d0278d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d0278d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff814fd053>] print_address_description+0x73/0x260 mm/kasan/report.c:252
 [<ffffffff814fd565>] kasan_report_error mm/kasan/report.c:351 [inline]
 [<ffffffff814fd565>] kasan_report+0x285/0x370 mm/kasan/report.c:408
 [<ffffffff814fd6c4>] __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:429
 [<ffffffff825b6d79>] list_empty include/linux/list.h:189 [inline]
 [<ffffffff825b6d79>] sg_remove_request+0xf9/0x110 drivers/scsi/sg.c:2120
 [<ffffffff825b72f5>] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1837
 [<ffffffff825b919b>] sg_read+0xa1b/0x1490 drivers/scsi/sg.c:537
 [<ffffffff8151c561>] do_loop_readv_writev+0x141/0x1e0 fs/read_write.c:680
 [<ffffffff8151e8bd>] do_readv_writev+0x5dd/0x6e0 fs/read_write.c:810
 [<ffffffff8151ea38>] vfs_readv+0x78/0xb0 fs/read_write.c:834
 [<ffffffff81520d69>] SYSC_readv fs/read_write.c:860 [inline]
 [<ffffffff81520d69>] SyS_readv+0xd9/0x240 fs/read_write.c:852
 [<ffffffff83771b5f>] entry_SYSCALL_64_fastpath+0x1c/0x98

Allocated by task 0:
(stack is not available)

Freed by task 0:
(stack is not available)

The buggy address belongs to the object at ffff8801d1bda100
 which belongs to the cache fasync_cache of size 96
The buggy address is located 64 bytes inside of
 96-byte region [ffff8801d1bda100, ffff8801d1bda160)
The buggy address belongs to the page:
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 490 Comm: khugepaged Not tainted 4.4.113-ge70c132 #34
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800bb2c2f80 task.stack: ffff8801d9308000
RIP: 0010:[<ffffffff812369df>]  [<ffffffff812369df>] __lock_acquire+0x61f/0x4b50 kernel/locking/lockdep.c:3100
RSP: 0018:ffff8801d930fa20  EFLAGS: 00010002
RAX: dffffc0000000000 RBX: 0428bb8d48ffed02 RCX: 0000000000000000
RDX: 1ffffffff0291f3d RSI: 0000000000000001 RDI: ffffffff8148f9e9
RBP: ffff8801d930fbb8 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 1ffff1003b261f56 R12: 0000000000000000
R13: ffff8800bb2c2f80 R14: ffffffff8148f9e1 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d04a7fb100 CR3: 00000001d1214000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff857f0d88 ffff8801d930fa48 ffffffff85175180 ffff8800bb2c3808
 ffff8800bb2c37e0 ffff8800bb2c37e8 ffff8800bb2c3810 ffff8800004352ca
 0000000000000200 0000000000055fe0 ffffffff85174fd0 ffff8800bb2c3808
Call Trace:
 [<ffffffff8123c77e>] lock_acquire+0x15e/0x460 kernel/locking/lockdep.c:3592
 [<ffffffff8376cd02>] down_read+0x42/0x60 kernel/locking/rwsem.c:22
 [<ffffffff8150601e>] khugepaged_scan_mm_slot mm/huge_memory.c:2807 [inline]
 [<ffffffff8150601e>] khugepaged_do_scan mm/huge_memory.c:2926 [inline]
 [<ffffffff8150601e>] khugepaged+0x7fe/0x28a0 mm/huge_memory.c:2961
 [<ffffffff811907d8>] kthread+0x268/0x300 kernel/kthread.c:211
 [<ffffffff83771f85>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:506
Code: 00 fc ff df 44 89 e3 49 8d 7c de 08 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b6 37 00 00 49 8b 5c de 08 48 85 db 0f 84 28 fb ff ff <f0> ff 83 98 01 00 00 49 8d 85 68 08 00 00 48 89 c2 48 89 44 24 
RIP  [<ffffffff812369df>] __lock_acquire+0x61f/0x4b50 kernel/locking/lockdep.c:3100
 RSP <ffff8801d930fa20>
---[ end trace 8ad8064e66e9e32e ]---