bcachefs (loop2): sb invalid before write: Unsupported superblock version_min 0.0: (unknown version) (min 0.9: (unknown version), max 1.25: extent_flags)
  inconsistency detected - emergency read only at journal seq 10
------------[ cut here ]------------
kernel BUG at fs/bcachefs/bkey_methods.c:469!
Oops: invalid opcode: 0000 [#1] SMP PTI
CPU: 1 UID: 0 PID: 3347 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:__bch2_bkey_compat+0x51e/0x530 fs/bcachefs/bkey_methods.c:469
Code: 17 48 81 c4 d8 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 cf fe 27 01 90 0f 0b 90 0f 0b 90 0f 0b 90 0f 0b 90 <0f> 0b 90 0f 0b cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90
RSP: 0018:ffffc900038536d0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff8881047b18c0 RSI: ffffc90003853740 RDI: ffff8881751e1028
RBP: 0000000000000000 R08: ffff8881751e1028 R09: ffffffff00000000
R10: f700000000000000 R11: 0000000000000000 R12: 0000000000000020
R13: 00000000ffffffff R14: 0000000000000003 R15: ffff8881751e1028
FS:  0000000000000000(0000) GS:ffff8882b3251000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe0cc35ff4 CR3: 00000001057fe000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_bkey_compat fs/bcachefs/bkey_methods.h:134 [inline]
 validate_bset_keys+0x1ee/0x7c0 fs/bcachefs/btree_io.c:983
 bch2_btree_node_read_done+0xc84/0x1800 fs/bcachefs/btree_io.c:1211
 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:__bch2_bkey_compat+0x51e/0x530 fs/bcachefs/bkey_methods.c:469
Code: 17 48 81 c4 d8 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 cf fe 27 01 90 0f 0b 90 0f 0b 90 0f 0b 90 0f 0b 90 <0f> 0b 90 0f 0b cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90
RSP: 0018:ffffc900038536d0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff8881047b18c0 RSI: ffffc90003853740 RDI: ffff8881751e1028
RBP: 0000000000000000 R08: ffff8881751e1028 R09: ffffffff00000000
R10: f700000000000000 R11: 0000000000000000 R12: 0000000000000020
R13: 00000000ffffffff R14: 0000000000000003 R15: ffff8881751e1028
FS:  0000000000000000(0000) GS:ffff8882b3251000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe0cc35ff4 CR3: 00000001057fe000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400