Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 PID: 5852 Comm: syz-executor Not tainted 6.10.0-rc7-syzkaller-00141-g43db1e03c086 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:list_add_tail include/linux/list.h:183 [inline]
RIP: 0010:list_lru_add+0x14b/0x400 mm/list_lru.c:97
Code: 00 49 83 c4 40 4c 89 64 24 08 e8 10 9f bd ff 49 8d 44 24 08 48 89 c2 48 89 44 24 18 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 31 02 00 00 4d 8b 7c 24 08 48 89 df 48 8b 54 24
RSP: 0018:ffffc900030afbb8 EFLAGS: 00010212
RAX: dffffc0000000000 RBX: ffff8880771c81b8 RCX: ffffc900030afa80
RDX: 0000000000000001 RSI: ffffffff81d18f10 RDI: ffff888064c14044
RBP: ffff8880608fc808 R08: 0000000000000000 R09: fffffbfff1fcab22
R10: ffffffff8fe55917 R11: 0000000000000003 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88801f5a3e00 R15: 0000000000000000
FS:  000055555cc86500(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8190ece2d8 CR3: 000000007c5fc000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 __inode_add_lru.part.0+0x109/0x1d0 fs/inode.c:467
 __inode_add_lru fs/inode.c:460 [inline]
 iput_final fs/inode.c:1718 [inline]
 iput.part.0+0x6f1/0x7f0 fs/inode.c:1767
 iput+0x5c/0x80 fs/inode.c:1757
 dentry_unlink_inode+0x29c/0x480 fs/dcache.c:404
 __dentry_kill+0x1d0/0x600 fs/dcache.c:607
 dput.part.0+0x4b1/0x9b0 fs/dcache.c:849
 dput fs/dcache.c:839 [inline]
 do_one_tree fs/dcache.c:1545 [inline]
 shrink_dcache_for_umount+0x131/0x390 fs/dcache.c:1559
 generic_shutdown_super+0x76/0x3d0 fs/super.c:620
 bch2_kill_sb+0x3b/0x50 fs/bcachefs/fs.c:2052
 deactivate_locked_super+0xc1/0x1a0 fs/super.c:473
 deactivate_super+0xde/0x100 fs/super.c:506
 cleanup_mnt+0x222/0x450 fs/namespace.c:1267
 task_work_run+0x151/0x250 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x275/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0e19d76f07
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:00007fffa9e62ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f0e19d76f07
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffa9e62f90
RBP: 00007fffa9e62f90 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fffa9e64050
R13: 00007f0e19de3515 R14: 000000000003806d R15: 000000000003806d
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:list_add_tail include/linux/list.h:183 [inline]
RIP: 0010:list_lru_add+0x14b/0x400 mm/list_lru.c:97
Code: 00 49 83 c4 40 4c 89 64 24 08 e8 10 9f bd ff 49 8d 44 24 08 48 89 c2 48 89 44 24 18 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 31 02 00 00 4d 8b 7c 24 08 48 89 df 48 8b 54 24
RSP: 0018:ffffc900030afbb8 EFLAGS: 00010212
RAX: dffffc0000000000 RBX: ffff8880771c81b8 RCX: ffffc900030afa80
RDX: 0000000000000001 RSI: ffffffff81d18f10 RDI: ffff888064c14044
RBP: ffff8880608fc808 R08: 0000000000000000 R09: fffffbfff1fcab22
R10: ffffffff8fe55917 R11: 0000000000000003 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88801f5a3e00 R15: 0000000000000000
FS:  000055555cc86500(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8190ece2d8 CR3: 000000007c5fc000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	49 83 c4 40          	add    $0x40,%r12
   4:	4c 89 64 24 08       	mov    %r12,0x8(%rsp)
   9:	e8 10 9f bd ff       	call   0xffbd9f1e
   e:	49 8d 44 24 08       	lea    0x8(%r12),%rax
  13:	48 89 c2             	mov    %rax,%rdx
  16:	48 89 44 24 18       	mov    %rax,0x18(%rsp)
  1b:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  22:	fc ff df
  25:	48 c1 ea 03          	shr    $0x3,%rdx
* 29:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2d:	0f 85 31 02 00 00    	jne    0x264
  33:	4d 8b 7c 24 08       	mov    0x8(%r12),%r15
  38:	48 89 df             	mov    %rbx,%rdi
  3b:	48                   	rex.W
  3c:	8b                   	.byte 0x8b
  3d:	54                   	push   %rsp
  3e:	24                   	.byte 0x24