bcachefs (loop2): invalid bkey in btree_node btree=subvolumes level=0: u64s 8 type snapshot 0:4294967295:0 len 0 ver 0: is_subvol 1 deleted 0 parent          0 children          0          0 subvol 1 tree 0
  invalid key type for btree subvolumes (snapshot), deleting
------------[ cut here ]------------
kernel BUG at fs/bcachefs/bkey.c:389!
Oops: invalid opcode: 0000 [#1] SMP PTI
CPU: 1 UID: 0 PID: 3348 Comm: read_btree_node Not tainted 6.15.0-rc4-syzkaller #0 PREEMPT(undef) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:set_inc_field_lossy fs/bcachefs/bkey.c:389 [inline]
RIP: 0010:bch2_bkey_pack_pos_lossy+0x600/0x620 fs/bcachefs/bkey.c:522
Code: c5 65 48 8b 0d 21 16 f8 02 48 3b 4c 24 60 75 14 48 83 c4 68 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 d1 12 28 01 90 <0f> 0b 90 0f 0b 90 0f 0b 90 0f 0b 90 0f 0b 90 0f 0b 66 66 66 66 66
RSP: 0018:ffffc90003213778 EFLAGS: 00010287
RAX: 0000000000000000 RBX: ffff88810eb4b800 RCX: 00000000ffffffff
RDX: 0000000000000040 RSI: ffff88810eb4b800 RDI: ffffc90003213858
RBP: ffffffffffffff01 R08: fffffffffffffffe R09: ffffc90003213818
R10: 0000000000000040 R11: fffff700ffffffff R12: ffffffffffffffff
R13: 00000000ffffffff R14: ffff88810eb4b8c0 R15: ffffc90003213850
FS:  0000000000000000(0000) GS:ffff8882b325c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ab310918f0 CR3: 0000000107784000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bkey_pack_pos fs/bcachefs/bkey.h:382 [inline]
 __build_ro_aux_tree+0x37e/0x670 fs/bcachefs/bset.c:735
 bch2_bset_build_aux_tree+0x14c/0x170 fs/bcachefs/bset.c:779
 bch2_btree_node_read_done+0x137b/0x1800 fs/bcachefs/btree_io.c:1322
 btree_node_read_work+0x18a/0x490 fs/bcachefs/btree_io.c:1400
 bch2_btree_node_read+0xc1a/0xcd0 fs/bcachefs/btree_io.c:-1
 bch2_btree_node_fill+0x56f/0x730 fs/bcachefs/btree_cache.c:994
 bch2_btree_node_get_noiter+0x2a8/0x320 fs/bcachefs/btree_cache.c:1261
 found_btree_node_is_readable fs/bcachefs/btree_node_scan.c:85 [inline]
 try_read_btree_node fs/bcachefs/btree_node_scan.c:220 [inline]
 read_btree_nodes_worker+0x6d4/0x9f0 fs/bcachefs/btree_node_scan.c:269
 kthread+0x23c/0x270 kernel/kthread.c:464
 ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:set_inc_field_lossy fs/bcachefs/bkey.c:389 [inline]
RIP: 0010:bch2_bkey_pack_pos_lossy+0x600/0x620 fs/bcachefs/bkey.c:522
Code: c5 65 48 8b 0d 21 16 f8 02 48 3b 4c 24 60 75 14 48 83 c4 68 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 d1 12 28 01 90 <0f> 0b 90 0f 0b 90 0f 0b 90 0f 0b 90 0f 0b 90 0f 0b 66 66 66 66 66
RSP: 0018:ffffc90003213778 EFLAGS: 00010287
RAX: 0000000000000000 RBX: ffff88810eb4b800 RCX: 00000000ffffffff
RDX: 0000000000000040 RSI: ffff88810eb4b800 RDI: ffffc90003213858
RBP: ffffffffffffff01 R08: fffffffffffffffe R09: ffffc90003213818
R10: 0000000000000040 R11: fffff700ffffffff R12: ffffffffffffffff
R13: 00000000ffffffff R14: ffff88810eb4b8c0 R15: ffffc90003213850
FS:  0000000000000000(0000) GS:ffff8882b325c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ab310918f0 CR3: 0000000107784000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400