------------[ cut here ]------------
WARNING: CPU: 1 PID: 11691 at lib/list_debug.c:59 __list_del_entry+0x14f/0x1d0 lib/list_debug.c:57()
list_del corruption. prev->next should be ffff8801d6a3c340, but was           (null)
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 11691 Comm: syz-executor2 Not tainted 4.4.125-g38f41ec #21
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 176a3aee61f4e97a ffff8801c80b78e0 ffffffff81d067bd
 ffffffff83843c60 ffff8801c80b79b8 ffffffff839ff0a0 0000000000000009
 000000000000003b ffff8801c80b79a8 ffffffff8141b46a 0000000041b58ab3
Call Trace:
 [<ffffffff81d067bd>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d067bd>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff8141b46a>] panic+0x1aa/0x388 kernel/panic.c:112
 [<ffffffff8112db65>] warn_slowpath_common+0x125/0x140 kernel/panic.c:455
 [<ffffffff8112dc41>] warn_slowpath_fmt+0xc1/0x110 kernel/panic.c:471
 [<ffffffff81d66acf>] __list_del_entry+0x14f/0x1d0 lib/list_debug.c:57
 [<ffffffff81d66b5d>] list_del+0xd/0x70 lib/list_debug.c:77
 [<ffffffff825bafe9>] sg_remove_request+0x99/0x110 drivers/scsi/sg.c:2126
 [<ffffffff825bd4cd>] sg_read+0xa3d/0x14d0 drivers/scsi/sg.c:538
 [<ffffffff8151d873>] __vfs_read+0x103/0x440 fs/read_write.c:432
 [<ffffffff8151f713>] vfs_read+0x123/0x3a0 fs/read_write.c:454
 [<ffffffff81522059>] SYSC_read fs/read_write.c:569 [inline]
 [<ffffffff81522059>] SyS_read+0xd9/0x1b0 fs/read_write.c:562
 [<ffffffff81006d91>] do_syscall_32_irqs_on arch/x86/entry/common.c:392 [inline]
 [<ffffffff81006d91>] do_fast_syscall_32+0x321/0x8a0 arch/x86/entry/common.c:459
 [<ffffffff8377b2aa>] sysenter_flags_fixed+0xd/0x17
Shutting down cpus with NMI
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..