Oops: general protection fault, probably for non-canonical address 0xdffffc0108942672: 0000 [#1] SMP KASAN NOPTI
KASAN: probably user-memory-access in range [0x0000000844a13390-0x0000000844a13397]
CPU: 0 UID: 0 PID: 5687 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__list_del_entry_valid_or_report+0xa6/0x190 lib/list_debug.c:65
Code: 4d 89 fc 49 c1 ec 03 43 80 3c 2c 00 74 08 4c 89 ff e8 fe 89 8b fd 49 39 1f 0f 85 92 00 00 00 4d 8d 7e 08 4d 89 fc 49 c1 ec 03 <43> 80 3c 2c 00 74 08 4c 89 ff e8 db 89 8b fd 49 39 1f 0f 85 9e 00
RSP: 0018:ffffc90002a7fab0 EFLAGS: 00010206
RAX: 1ffff11008942796 RBX: ffff888044a13cb0 RCX: dffffc0000000000
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888044a13cb8
RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200054ff4c R12: 0000000108942672
R13: dffffc0000000000 R14: 0000000844a13388 R15: 0000000844a13390
FS:  0000555590aa8500(0000) GS:ffff88808d302000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555590ac35c8 CR3: 000000005816e000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:132 [inline]
 __list_del_entry include/linux/list.h:223 [inline]
 list_del_init include/linux/list.h:295 [inline]
 inode_io_list_del+0x74/0x1a0 fs/fs-writeback.c:1355
 evict+0x15e/0x9c0 fs/inode.c:793
 dispose_list fs/inode.c:852 [inline]
 evict_inodes+0x466/0x6d0 fs/inode.c:900
 generic_shutdown_super+0x9a/0x2c0 fs/super.c:627
 kill_block_super+0x44/0x90 fs/super.c:1722
 deactivate_locked_super+0xbc/0x130 fs/super.c:473
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1327
 task_work_run+0x1d4/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0xe9/0x130 kernel/entry/common.c:43
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f62d978fc97
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffe84acae48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f62d981089d RCX: 00007f62d978fc97
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe84acaf00
RBP: 00007ffe84acaf00 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe84acbf90
R13: 00007f62d981089d R14: 0000000000023c8b R15: 00007ffe84acbfd0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0xa6/0x190 lib/list_debug.c:65
Code: 4d 89 fc 49 c1 ec 03 43 80 3c 2c 00 74 08 4c 89 ff e8 fe 89 8b fd 49 39 1f 0f 85 92 00 00 00 4d 8d 7e 08 4d 89 fc 49 c1 ec 03 <43> 80 3c 2c 00 74 08 4c 89 ff e8 db 89 8b fd 49 39 1f 0f 85 9e 00
RSP: 0018:ffffc90002a7fab0 EFLAGS: 00010206
RAX: 1ffff11008942796 RBX: ffff888044a13cb0 RCX: dffffc0000000000
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888044a13cb8
RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200054ff4c R12: 0000000108942672
R13: dffffc0000000000 R14: 0000000844a13388 R15: 0000000844a13390
FS:  0000555590aa8500(0000) GS:ffff88808d302000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555590ac35c8 CR3: 000000005816e000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
   0:	4d 89 fc             	mov    %r15,%r12
   3:	49 c1 ec 03          	shr    $0x3,%r12
   7:	43 80 3c 2c 00       	cmpb   $0x0,(%r12,%r13,1)
   c:	74 08                	je     0x16
   e:	4c 89 ff             	mov    %r15,%rdi
  11:	e8 fe 89 8b fd       	call   0xfd8b8a14
  16:	49 39 1f             	cmp    %rbx,(%r15)
  19:	0f 85 92 00 00 00    	jne    0xb1
  1f:	4d 8d 7e 08          	lea    0x8(%r14),%r15
  23:	4d 89 fc             	mov    %r15,%r12
  26:	49 c1 ec 03          	shr    $0x3,%r12
* 2a:	43 80 3c 2c 00       	cmpb   $0x0,(%r12,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 ff             	mov    %r15,%rdi
  34:	e8 db 89 8b fd       	call   0xfd8b8a14
  39:	49 39 1f             	cmp    %rbx,(%r15)
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	9e                   	sahf