random: nonblocking pool is initialized
==================================================================
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:2130
Read of size 8 at addr ffff8801d187c140 by task syzkaller571058/3312

CPU: 0 PID: 3312 Comm: syzkaller571058 Not tainted 4.4.111-gc2f631b #20
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 f23a14aa072be74f ffff8801d030f970 ffffffff81d0513d
 ffffea0007461f00 ffff8801d187c140 0000000000000000 ffff8801d187c140
 ffff8800b462a338 ffff8801d030f9a8 ffffffff814fd433 ffff8801d187c140
Call Trace:
 [<ffffffff81d0513d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d0513d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff814fd433>] print_address_description+0x73/0x260 mm/kasan/report.c:252
 [<ffffffff814fd945>] kasan_report_error mm/kasan/report.c:351 [inline]
 [<ffffffff814fd945>] kasan_report+0x285/0x370 mm/kasan/report.c:408
 [<ffffffff814fdaa4>] __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:429
 [<ffffffff825b9da9>] list_empty include/linux/list.h:189 [inline]
 [<ffffffff825b9da9>] sg_remove_request+0xf9/0x110 drivers/scsi/sg.c:2130
 [<ffffffff825ba325>] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1848
 [<ffffffff825bc161>] sg_read+0xa21/0x1490 drivers/scsi/sg.c:538
 [<ffffffff8151cc51>] do_loop_readv_writev+0x141/0x1e0 fs/read_write.c:680
 [<ffffffff8151f7ef>] compat_do_readv_writev+0x5df/0x6e0 fs/read_write.c:984
 [<ffffffff8151f9c9>] compat_readv+0xd9/0x140 fs/read_write.c:1013
 [<ffffffff81521d58>] C_SYSC_readv fs/read_write.c:1033 [inline]
 [<ffffffff81521d58>] compat_SyS_readv+0xd8/0x1b0 fs/read_write.c:1022
 [<ffffffff81006d84>] do_syscall_32_irqs_on arch/x86/entry/common.c:390 [inline]
 [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890 arch/x86/entry/common.c:457
 [<ffffffff837772aa>] sysenter_flags_fixed+0xd/0x17

Allocated by task 0:
(stack is not available)

Freed by task 0:
(stack is not available)

The buggy address belongs to the object at ffff8801d187c100
 which belongs to the cache fasync_cache of size 96
The buggy address is located 64 bytes inside of
 96-byte region [ffff8801d187c100, ffff8801d187c160)
The buggy address belongs to the page:
PANIC: double fault, error_code: 0x0
CPU: 0 PID: 3312 Comm: syzkaller571058 Not tainted 4.4.111-gc2f631b #20
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800b502c740 task.stack: ffff8801d0308000
RIP: 0010:[<ffffffff8148f808>]  [<ffffffff8148f808>] dump_page_badflags+0x8/0x250 mm/debug.c:84
RSP: 0018:ffff880100000000  EFLAGS: 00010046
RAX: ffff8800b502c740 RBX: ffffea0007461f00 RCX: ffffffff8148f980
RDX: 0000000000000000 RSI: ffffffff838a8360 RDI: ffffea0007461f00
RBP: ffff880100000010 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000002 R11: fffffbfff0ad781e R12: 0000000000000000
R13: ffffffff838a8360 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:000000000a02f840
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffff8800fffffff8 CR3: 00000001d2218000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:

Call Trace:
 <UNK> 
Code: 00 e9 83 fd ff ff e8 a8 e2 06 00 e9 50 fd ff ff e8 9e e2 06 00 e9 1d fd ff ff 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 <41> 55 49 89 f5 41 54 49 89 d4 53 48 89 fb 48 83 ec 08 e8 61 06