bcachefs (loop5): inode 4098:4294967295 has wrong backpointer:
  got       0:32
  should be 4096:189491840996961599, fixing
------------[ cut here ]------------
btree trans held srcu lock (delaying memory reclaim) for 15 seconds
WARNING: CPU: 1 PID: 9231 at fs/bcachefs/btree_iter.c:3185 check_srcu_held_too_long fs/bcachefs/btree_iter.c:3183 [inline]
WARNING: CPU: 1 PID: 9231 at fs/bcachefs/btree_iter.c:3185 bch2_trans_put+0xe20/0x10a0 fs/bcachefs/btree_iter.c:3440
Modules linked in:
CPU: 1 UID: 0 PID: 9231 Comm: syz.5.369 Not tainted 6.15.0-rc7-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:check_srcu_held_too_long fs/bcachefs/btree_iter.c:3183 [inline]
RIP: 0010:bch2_trans_put+0xe20/0x10a0 fs/bcachefs/btree_iter.c:3440
Code: 2b 33 49 c1 ee 02 48 b9 c3 f5 28 5c 8f c2 f5 28 4c 89 f0 48 f7 e1 48 c1 ea 02 48 c7 c7 e0 ea b2 8b 48 89 d6 e8 21 3e 68 fd 90 <0f> 0b 90 90 e9 71 f8 ff ff e8 72 e1 a3 fd 90 0f 0b 90 e9 b4 f8 ff
RSP: 0018:ffffc90003bdf800 EFLAGS: 00010246
RAX: a00090ad3253ac00 RBX: ffff888049ae8088 RCX: 0000000000080000
RDX: ffffc9001a32e000 RSI: 0000000000073a77 RDI: 0000000000073a78
RBP: 000000010000016c R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bba984 R12: ffff888049ae8045
R13: 1ffff1100935d011 R14: 0000000000000184 R15: 1ffff1100935d008
FS:  00007efe070996c0(0000) GS:ffff8881261f6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff40ab3228 CR3: 0000000047f82000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_lookup+0xe30/0x1060 fs/bcachefs/fs.c:721
 lookup_one_qstr_excl_raw+0x118/0x280 fs/namei.c:1689
 lookup_one_qstr_excl fs/namei.c:1711 [inline]
 filename_create+0x225/0x470 fs/namei.c:4133
 do_mkdirat+0xa0/0x590 fs/namei.c:4384
 __do_sys_mkdirat fs/namei.c:4409 [inline]
 __se_sys_mkdirat fs/namei.c:4407 [inline]
 __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4407
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efe0618e969
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efe07099038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007efe063b5fa0 RCX: 00007efe0618e969
RDX: 0000000000000004 RSI: 0000200000000100 RDI: ffffffffffffff9c
RBP: 00007efe06210ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007efe063b5fa0 R15: 00007fffc8ac9fa8
 </TASK>