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BUG: KASAN: slab-out-of-bounds in __read_once_size include/linux/compiler.h:243 [inline]
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+0x103/0x120 drivers/scsi/sg.c:2120
Read of size 8 at addr ffff8801ca226140 by task syzkaller201073/3336

CPU: 0 PID: 3336 Comm: syzkaller201073 Not tainted 4.9.77-g8788313 #16
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801ca3efab0 ffffffff81d941c9 ffffea0007288980 ffff8801ca226140
 0000000000000000 ffff8801ca226140 ffff8801c8fe8238 ffff8801ca3efae8
 ffffffff8153db93 ffff8801ca226140 0000000000000008 0000000000000000
Call Trace:
 [<ffffffff81d941c9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d941c9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153db93>] print_address_description+0x73/0x280 mm/kasan/report.c:252
 [<ffffffff8153e0b5>] kasan_report_error mm/kasan/report.c:351 [inline]
 [<ffffffff8153e0b5>] kasan_report+0x275/0x360 mm/kasan/report.c:408
 [<ffffffff8153e214>] __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:429
 [<ffffffff82667363>] __read_once_size include/linux/compiler.h:243 [inline]
 [<ffffffff82667363>] list_empty include/linux/list.h:189 [inline]
 [<ffffffff82667363>] sg_remove_request+0x103/0x120 drivers/scsi/sg.c:2120
 [<ffffffff826678e5>] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1838
 [<ffffffff8266971c>] sg_read+0xa1c/0x1440 drivers/scsi/sg.c:527
 [<ffffffff8156b9e3>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156f77e>] vfs_read+0x11e/0x380 fs/read_write.c:475
 [<ffffffff815734a9>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff815734a9>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff838b2b6e>] entry_SYSCALL_64_fastpath+0x29/0xe8

Allocated by task 0:
(stack is not available)

Freed by task 0:
(stack is not available)

The buggy address belongs to the object at ffff8801ca226100
 which belongs to the cache fasync_cache of size 96
The buggy address is located 64 bytes inside of
 96-byte region [ffff8801ca226100, ffff8801ca226160)
The buggy address belongs to the page:
page:ffffea0007288980 count:1 mapcount:0 mapping:          (null) index:0x0
flags: 0x8000000000000080(slab)
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801ca226000: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc
 ffff8801ca226080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8801ca226100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                           ^
 ffff8801ca226180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8801ca226200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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