bucket incorrectly unset in freespace btree
  u64s 5 type deleted 0:29:0 len 0 ver 0, , continuing
=====================================================
BUG: KMSAN: uninit-value in bpos_le fs/bcachefs/bkey.h:113 [inline]
BUG: KMSAN: uninit-value in bpos_ge fs/bcachefs/bkey.h:125 [inline]
BUG: KMSAN: uninit-value in bch2_btree_ptr_v2_validate+0x51c/0xb20 fs/bcachefs/extents.c:211
 bpos_le fs/bcachefs/bkey.h:113 [inline]
 bpos_ge fs/bcachefs/bkey.h:125 [inline]
 bch2_btree_ptr_v2_validate+0x51c/0xb20 fs/bcachefs/extents.c:211
 bch2_bkey_val_validate+0x357/0x530 fs/bcachefs/bkey_methods.c:143
 btree_node_bkey_val_validate fs/bcachefs/btree_io.c:838 [inline]
 bset_key_validate fs/bcachefs/btree_io.c:859 [inline]
 validate_bset_keys+0x204b/0x22c0 fs/bcachefs/btree_io.c:942
 validate_bset_for_write+0x2b3/0x410 fs/bcachefs/btree_io.c:1987
 __bch2_btree_node_write+0x5460/0x68b0 fs/bcachefs/btree_io.c:2197
 bch2_btree_node_write_trans+0xd7/0x8a0 fs/bcachefs/btree_io.c:2357
 btree_node_write_if_need fs/bcachefs/btree_io.h:153 [inline]
 btree_update_nodes_written fs/bcachefs/btree_update_interior.c:818 [inline]
 btree_interior_update_work+0x3ec1/0x4850 fs/bcachefs/btree_update_interior.c:846
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xc1d/0x1e80 kernel/workqueue.c:3319
 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3400
 kthread+0x6b9/0xef0 kernel/kthread.c:464
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Uninit was stored to memory at:
 memcpy_u64s_small fs/bcachefs/util.h:416 [inline]
 bkey_p_copy fs/bcachefs/bkey.h:40 [inline]
 bch2_sort_keys_keep_unwritten_whiteouts+0x15d9/0x1850 fs/bcachefs/bkey_sort.c:187
 __bch2_btree_node_write+0x3b69/0x68b0 fs/bcachefs/btree_io.c:2140
 bch2_btree_node_write_trans+0xd7/0x8a0 fs/bcachefs/btree_io.c:2357
 btree_node_write_if_need fs/bcachefs/btree_io.h:153 [inline]
 btree_update_nodes_written fs/bcachefs/btree_update_interior.c:818 [inline]
 btree_interior_update_work+0x3ec1/0x4850 fs/bcachefs/btree_update_interior.c:846
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xc1d/0x1e80 kernel/workqueue.c:3319
 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3400
 kthread+0x6b9/0xef0 kernel/kthread.c:464
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Uninit was created at:
 ___kmalloc_large_node+0x365/0x420 mm/slub.c:4273
 __kmalloc_large_node_noprof+0x3f/0x1e0 mm/slub.c:4290
 __do_kmalloc_node mm/slub.c:4306 [inline]
 __kvmalloc_node_noprof+0xa2/0x13d0 mm/slub.c:5003
 btree_node_data_alloc fs/bcachefs/btree_cache.c:156 [inline]
 bch2_btree_node_mem_alloc+0xa98/0x2f10 fs/bcachefs/btree_cache.c:835
 __bch2_btree_node_alloc fs/bcachefs/btree_update_interior.c:304 [inline]
 bch2_btree_reserve_get+0x382/0x22b0 fs/bcachefs/btree_update_interior.c:532
 bch2_btree_update_start+0x22b8/0x2ec0 fs/bcachefs/btree_update_interior.c:1232
 bch2_btree_split_leaf+0x12b/0xcb0 fs/bcachefs/btree_update_interior.c:1853
 bch2_trans_commit_error+0x1d8/0x2080 fs/bcachefs/btree_trans_commit.c:908
 __bch2_trans_commit+0x1d6a/0xd3c0 fs/bcachefs/btree_trans_commit.c:1089
 bch2_trans_commit fs/bcachefs/btree_update.h:191 [inline]
 bch2_journal_replay+0x3147/0x4e40 fs/bcachefs/recovery.c:373
 bch2_run_recovery_pass fs/bcachefs/recovery_passes.c:226 [inline]
 bch2_run_recovery_passes+0x5a2/0x1160 fs/bcachefs/recovery_passes.c:291
 bch2_fs_recovery+0x489c/0x6230 fs/bcachefs/recovery.c:936
 bch2_fs_start+0x7ca/0xc20 fs/bcachefs/super.c:1041
 bch2_fs_get_tree+0x1564/0x24e0 fs/bcachefs/fs.c:2203
 vfs_get_tree+0xb1/0x5a0 fs/super.c:1759
 do_new_mount+0x71f/0x15e0 fs/namespace.c:3878
 path_mount+0x742/0x1f10 fs/namespace.c:4205
 do_mount fs/namespace.c:4218 [inline]
 __do_sys_mount fs/namespace.c:4429 [inline]
 __se_sys_mount+0x71f/0x800 fs/namespace.c:4406
 __x64_sys_mount+0xe4/0x150 fs/namespace.c:4406
 x64_sys_call+0xed5/0x3c80 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 0 UID: 0 PID: 4390 Comm: kworker/u8:24 Not tainted 6.14.0-syzkaller-01103-g2df0c02dab82 #0 PREEMPT(undef) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: btree_update btree_interior_update_work
=====================================================