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-rw-r--r--fs/btrfs/backref.c10
-rw-r--r--fs/btrfs/ctree.c21
-rw-r--r--fs/btrfs/disk-io.c19
-rw-r--r--fs/btrfs/extent-tree.c4
-rw-r--r--fs/btrfs/relocation.c18
5 files changed, 59 insertions, 13 deletions
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 23e927b191c9..04b5b3093893 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -423,7 +423,10 @@ static int __add_missing_keys(struct btrfs_fs_info *fs_info,
BUG_ON(!ref->wanted_disk_byte);
eb = read_tree_block(fs_info->tree_root, ref->wanted_disk_byte,
fs_info->tree_root->leafsize, 0);
- BUG_ON(!eb);
+ if (!eb || !extent_buffer_uptodate(eb)) {
+ free_extent_buffer(eb);
+ return -EIO;
+ }
btrfs_tree_read_lock(eb);
if (btrfs_header_level(eb) == 0)
btrfs_item_key_to_cpu(eb, &ref->key_for_search, 0);
@@ -913,7 +916,10 @@ again:
info_level);
eb = read_tree_block(fs_info->extent_root,
ref->parent, bsz, 0);
- BUG_ON(!eb);
+ if (!eb || !extent_buffer_uptodate(eb)) {
+ free_extent_buffer(eb);
+ return -EIO;
+ }
ret = find_extent_in_eb(eb, bytenr,
*extent_item_pos, &eie);
ref->inode_list = eie;
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 566d99b51bef..2bc34408872d 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1281,7 +1281,8 @@ get_old_root(struct btrfs_root *root, u64 time_seq)
free_extent_buffer(eb_root);
blocksize = btrfs_level_size(root, old_root->level);
old = read_tree_block(root, logical, blocksize, 0);
- if (!old) {
+ if (!old || !extent_buffer_uptodate(old)) {
+ free_extent_buffer(old);
pr_warn("btrfs: failed to read tree block %llu from get_old_root\n",
logical);
WARN_ON(1);
@@ -1526,8 +1527,10 @@ int btrfs_realloc_node(struct btrfs_trans_handle *trans,
if (!cur) {
cur = read_tree_block(root, blocknr,
blocksize, gen);
- if (!cur)
+ if (!cur || !extent_buffer_uptodate(cur)) {
+ free_extent_buffer(cur);
return -EIO;
+ }
} else if (!uptodate) {
err = btrfs_read_buffer(cur, gen);
if (err) {
@@ -1692,6 +1695,8 @@ static noinline struct extent_buffer *read_node_slot(struct btrfs_root *root,
struct extent_buffer *parent, int slot)
{
int level = btrfs_header_level(parent);
+ struct extent_buffer *eb;
+
if (slot < 0)
return NULL;
if (slot >= btrfs_header_nritems(parent))
@@ -1699,9 +1704,15 @@ static noinline struct extent_buffer *read_node_slot(struct btrfs_root *root,
BUG_ON(level == 0);
- return read_tree_block(root, btrfs_node_blockptr(parent, slot),
- btrfs_level_size(root, level - 1),
- btrfs_node_ptr_generation(parent, slot));
+ eb = read_tree_block(root, btrfs_node_blockptr(parent, slot),
+ btrfs_level_size(root, level - 1),
+ btrfs_node_ptr_generation(parent, slot));
+ if (eb && !extent_buffer_uptodate(eb)) {
+ free_extent_buffer(eb);
+ eb = NULL;
+ }
+
+ return eb;
}
/*
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index c7d8fb0dbff6..deb6e3d07281 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1496,6 +1496,14 @@ struct btrfs_root *btrfs_read_fs_root_no_radix(struct btrfs_root *tree_root,
blocksize = btrfs_level_size(root, btrfs_root_level(&root->root_item));
root->node = read_tree_block(root, btrfs_root_bytenr(&root->root_item),
blocksize, generation);
+ if (!root->node || !extent_buffer_uptodate(root->node)) {
+ ret = (!root->node) ? -ENOMEM : -EIO;
+
+ free_extent_buffer(root->node);
+ kfree(root);
+ return ERR_PTR(ret);
+ }
+
root->commit_root = btrfs_root_node(root);
BUG_ON(!root->node); /* -ENOMEM */
out:
@@ -2515,8 +2523,8 @@ int open_ctree(struct super_block *sb,
chunk_root->node = read_tree_block(chunk_root,
btrfs_super_chunk_root(disk_super),
blocksize, generation);
- BUG_ON(!chunk_root->node); /* -ENOMEM */
- if (!test_bit(EXTENT_BUFFER_UPTODATE, &chunk_root->node->bflags)) {
+ if (!chunk_root->node ||
+ !test_bit(EXTENT_BUFFER_UPTODATE, &chunk_root->node->bflags)) {
printk(KERN_WARNING "btrfs: failed to read chunk root on %s\n",
sb->s_id);
goto fail_tree_roots;
@@ -2701,6 +2709,13 @@ retry_root_backup:
log_tree_root->node = read_tree_block(tree_root, bytenr,
blocksize,
generation + 1);
+ if (!log_tree_root->node ||
+ !extent_buffer_uptodate(log_tree_root->node)) {
+ printk(KERN_ERR "btrfs: failed to read log tree\n");
+ free_extent_buffer(log_tree_root->node);
+ kfree(log_tree_root);
+ goto fail_trans_kthread;
+ }
/* returns with log_tree_root freed on success */
ret = btrfs_recover_log_trees(log_tree_root);
if (ret) {
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 94bed61b799f..6526f1faf6c2 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -7087,8 +7087,10 @@ static noinline int do_walk_down(struct btrfs_trans_handle *trans,
if (reada && level == 1)
reada_walk_down(trans, root, wc, path);
next = read_tree_block(root, bytenr, blocksize, generation);
- if (!next)
+ if (!next || !extent_buffer_uptodate(next)) {
+ free_extent_buffer(next);
return -EIO;
+ }
btrfs_tree_lock(next);
btrfs_set_lock_blocking(next);
}
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 208154986c4c..63cdd9246c70 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -1771,7 +1771,11 @@ again:
eb = read_tree_block(dest, old_bytenr, blocksize,
old_ptr_gen);
- BUG_ON(!eb);
+ if (!eb || !extent_buffer_uptodate(eb)) {
+ ret = (!eb) ? -ENOMEM : -EIO;
+ free_extent_buffer(eb);
+ return ret;
+ }
btrfs_tree_lock(eb);
if (cow) {
ret = btrfs_cow_block(trans, dest, eb, parent,
@@ -1924,6 +1928,10 @@ int walk_down_reloc_tree(struct btrfs_root *root, struct btrfs_path *path,
bytenr = btrfs_node_blockptr(eb, path->slots[i]);
blocksize = btrfs_level_size(root, i - 1);
eb = read_tree_block(root, bytenr, blocksize, ptr_gen);
+ if (!eb || !extent_buffer_uptodate(eb)) {
+ free_extent_buffer(eb);
+ return -EIO;
+ }
BUG_ON(btrfs_header_level(eb) != i - 1);
path->nodes[i - 1] = eb;
path->slots[i - 1] = 0;
@@ -2601,7 +2609,8 @@ static int do_relocation(struct btrfs_trans_handle *trans,
blocksize = btrfs_level_size(root, node->level);
generation = btrfs_node_ptr_generation(upper->eb, slot);
eb = read_tree_block(root, bytenr, blocksize, generation);
- if (!eb) {
+ if (!eb || !extent_buffer_uptodate(eb)) {
+ free_extent_buffer(eb);
err = -EIO;
goto next;
}
@@ -2762,7 +2771,10 @@ static int get_tree_block_key(struct reloc_control *rc,
BUG_ON(block->key_ready);
eb = read_tree_block(rc->extent_root, block->bytenr,
block->key.objectid, block->key.offset);
- BUG_ON(!eb);
+ if (!eb || !extent_buffer_uptodate(eb)) {
+ free_extent_buffer(eb);
+ return -EIO;
+ }
WARN_ON(btrfs_header_level(eb) != block->level);
if (block->level == 0)
btrfs_item_key_to_cpu(eb, &block->key, 0);
generated by cgit (git 2.34.1) at 2025-10-31 01:59:30 +0000