From: Filipe Manana fdmanana@suse.com
mainline inclusion from mainline-v6.11-rc1 commit c65967ac4d1668dfcb903215c8af128fa15f05d6 bugzilla: https://gitee.com/src-openeuler/kernel/issues/IARX0N CVE: CVE-2024-46751
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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If we didn't found an extent item with the initial btrfs_search_slot() call, it's pointless to test if the "metadata" variable is "true", because right after we check if the key type is BTRFS_METADATA_ITEM_KEY and that is the case only when "metadata" is set to "true". So remove the redundant check.
Reviewed-by: Qu Wenruo wqu@suse.com Signed-off-by: Filipe Manana fdmanana@suse.com Signed-off-by: David Sterba dsterba@suse.com Signed-off-by: Yifan Qiao qiaoyifan4@huawei.com --- fs/btrfs/extent-tree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 578b217bc4ea..88b00fb2a30d 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -155,7 +155,7 @@ int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, if (ret < 0) goto out_free;
- if (ret > 0 && metadata && key.type == BTRFS_METADATA_ITEM_KEY) { + if (ret > 0 && key.type == BTRFS_METADATA_ITEM_KEY) { if (path->slots[0]) { path->slots[0]--; btrfs_item_key_to_cpu(path->nodes[0], &key,