diff options
| author | Filipe Manana <fdmanana@suse.com> | 2024-06-23 12:50:26 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2024-07-02 19:14:57 +0200 |
| commit | 9da45c88e124f13a3c4d480b89b298e007fbb9e4 (patch) | |
| tree | 33f7428729cd1f1bcc89f4d7583a0f9dfa9eda54 /fs/btrfs/ref-verify.c | |
| parent | 724d8042cef84496ddb4492dc120291f997ae26b (diff) | |
btrfs: fix uninitialized return value in the ref-verify tool
In the ref-verify tool, when processing the inline references of an extent
item, we may end up returning with uninitialized return value, because:
1) The 'ret' variable is not initialized if there are no inline extent
references ('ptr' == 'end' before the while loop starts);
2) If we find an extent owner inline reference we don't initialize 'ret'.
So fix these cases by initializing 'ret' to 0 when declaring the variable
and set it to -EINVAL if we find an extent owner inline references and
simple quotas are not enabled (as well as print an error message).
Reported-by: Mirsad Todorovac <mtodorovac69@gmail.com>
Link: https://lore.kernel.org/linux-btrfs/59b40ebe-c824-457d-8b24-0bbca69d472b@gmail.com/
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/ref-verify.c')
| -rw-r--r-- | fs/btrfs/ref-verify.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/btrfs/ref-verify.c b/fs/btrfs/ref-verify.c index cf531255ab76..9522a8b79d22 100644 --- a/fs/btrfs/ref-verify.c +++ b/fs/btrfs/ref-verify.c @@ -441,7 +441,8 @@ static int process_extent_item(struct btrfs_fs_info *fs_info, u32 item_size = btrfs_item_size(leaf, slot); unsigned long end, ptr; u64 offset, flags, count; - int type, ret; + int type; + int ret = 0; ei = btrfs_item_ptr(leaf, slot, struct btrfs_extent_item); flags = btrfs_extent_flags(leaf, ei); @@ -486,7 +487,11 @@ static int process_extent_item(struct btrfs_fs_info *fs_info, key->objectid, key->offset); break; case BTRFS_EXTENT_OWNER_REF_KEY: - WARN_ON(!btrfs_fs_incompat(fs_info, SIMPLE_QUOTA)); + if (!btrfs_fs_incompat(fs_info, SIMPLE_QUOTA)) { + btrfs_err(fs_info, + "found extent owner ref without simple quotas enabled"); + ret = -EINVAL; + } break; default: btrfs_err(fs_info, "invalid key type in iref"); |