bcachefs (loop5): btree ptr not marked in member info btree allocated bitmap
  u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq ebb8d5a9e3463bdb written 16 min_key POS_MIN durability: 1 ptr: 0:32:0 gen 0, fixing
 done
bcachefs (loop5): going read-write
bcachefs (loop5): journal_replay...
------------[ cut here ]------------
kernel BUG at fs/bcachefs/btree_update.c:375!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 13781 Comm: syz.5.2049 Not tainted 6.16.0-rc3-syzkaller-00190-g67a993863163 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:bch2_trans_update_by_path+0x1efb/0x1f30 fs/bcachefs/btree_update.c:375
Code: 80 e1 07 fe c1 38 c1 0f 8c 40 f7 ff ff 48 8b 7c 24 28 e8 68 30 fa fd e9 31 f7 ff ff e8 0e ac 96 fd 90 0f 0b e8 06 ac 96 fd 90 <0f> 0b e8 fe ab 96 fd 90 0f 0b e8 f6 ab 96 fd 90 0f 0b e8 ee ab 96
RSP: 0018:ffffc90003176a08 EFLAGS: 00010246
RAX: ffffffff8429a26a RBX: 0000000000008540 RCX: 0000000000080000
RDX: ffffc90010eed000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: 1ffff1100aae4802 R08: ffffffff844da589 R09: 0000000000000002
R10: 0000000000000003 R11: 0000000000000002 R12: 1ffff1100aae485e
R13: ffff888055724010 R14: 0000000000000088 R15: ffff8880557242f0
FS:  00007fc8ee3706c0(0000) GS:ffff888125c50000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555630af608 CR3: 000000004cfbf000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 bch2_trans_update_ip+0x9a6/0x1db0 fs/bcachefs/btree_update.c:531
 bch2_trans_update fs/bcachefs/btree_update.h:123 [inline]
 bch2_journal_replay_key+0x4b0/0xb40 fs/bcachefs/recovery.c:311
 bch2_journal_replay+0x171d/0x2630 fs/bcachefs/recovery.c:396
 bch2_run_recovery_pass fs/bcachefs/recovery_passes.c:484 [inline]
 __bch2_run_recovery_passes+0x395/0x1010 fs/bcachefs/recovery_passes.c:539
 bch2_run_recovery_passes+0x184/0x210 fs/bcachefs/recovery_passes.c:610
 bch2_fs_recovery+0x2690/0x3a50 fs/bcachefs/recovery.c:1005
 bch2_fs_start+0xa99/0xd90 fs/bcachefs/super.c:1212
 bch2_fs_get_tree+0xafc/0x14f0 fs/bcachefs/fs.c:2490
 vfs_get_tree+0x92/0x2b0 fs/super.c:1804
 do_new_mount+0x24a/0xa40 fs/namespace.c:3902
 do_mount fs/namespace.c:4239 [inline]
 __do_sys_mount fs/namespace.c:4450 [inline]
 __se_sys_mount+0x317/0x410 fs/namespace.c:4427
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc8ed5900ca
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007fc8ee36fe68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc8ee36fef0 RCX: 00007fc8ed5900ca
RDX: 00002000000000c0 RSI: 0000200000000000 RDI: 00007fc8ee36feb0
RBP: 00002000000000c0 R08: 00007fc8ee36fef0 R09: 0000000000800017
R10: 0000000000800017 R11: 0000000000000246 R12: 0000200000000000
R13: 00007fc8ee36feb0 R14: 000000000000593f R15: 0000200000005b00
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:bch2_trans_update_by_path+0x1efb/0x1f30 fs/bcachefs/btree_update.c:375
Code: 80 e1 07 fe c1 38 c1 0f 8c 40 f7 ff ff 48 8b 7c 24 28 e8 68 30 fa fd e9 31 f7 ff ff e8 0e ac 96 fd 90 0f 0b e8 06 ac 96 fd 90 <0f> 0b e8 fe ab 96 fd 90 0f 0b e8 f6 ab 96 fd 90 0f 0b e8 ee ab 96
RSP: 0018:ffffc90003176a08 EFLAGS: 00010246
RAX: ffffffff8429a26a RBX: 0000000000008540 RCX: 0000000000080000
RDX: ffffc90010eed000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: 1ffff1100aae4802 R08: ffffffff844da589 R09: 0000000000000002
R10: 0000000000000003 R11: 0000000000000002 R12: 1ffff1100aae485e
R13: ffff888055724010 R14: 0000000000000088 R15: ffff8880557242f0
FS:  00007fc8ee3706c0(0000) GS:ffff888125c50000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555630af608 CR3: 000000004cfbf000 CR4: 0000000000350ef0