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| author | Sweet Tea Dorminy <sweettea-kernel@dorminy.me> | 2023-03-08 16:58:36 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2023-03-15 20:51:06 +0100 |
| commit | 10a8857a1beaa015efba7d56e06243d484549fb6 (patch) | |
| tree | f1509f52eb549d5aeef219df88338617fd576d9b /fs | |
| parent | btrfs: handle missing chunk mapping more gracefully (diff) | |
| download | linux-10a8857a1beaa015efba7d56e06243d484549fb6.tar.xz linux-10a8857a1beaa015efba7d56e06243d484549fb6.zip | |
btrfs: fix compiler warning on SPARC/PA-RISC handling fscrypt_setup_filename
Commit 1ec49744ba83 ("btrfs: turn on -Wmaybe-uninitialized") exposed
that on SPARC and PA-RISC, gcc is unaware that fscrypt_setup_filename()
only returns negative error values or 0. This ultimately results in a
maybe-uninitialized warning in btrfs_lookup_dentry().
Change to only return negative error values or 0 from
fscrypt_setup_filename() at the relevant call site, and assert that no
positive error codes are returned (which would have wider implications
involving other users).
Reported-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/all/481b19b5-83a0-4793-b4fd-194ad7b978c3@roeck-us.net/
Signed-off-by: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/inode.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 44e9acc77a74..e99432e4912e 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -5421,8 +5421,13 @@ static int btrfs_inode_by_name(struct btrfs_inode *dir, struct dentry *dentry, return -ENOMEM; ret = fscrypt_setup_filename(&dir->vfs_inode, &dentry->d_name, 1, &fname); - if (ret) + if (ret < 0) goto out; + /* + * fscrypt_setup_filename() should never return a positive value, but + * gcc on sparc/parisc thinks it can, so assert that doesn't happen. + */ + ASSERT(ret == 0); /* This needs to handle no-key deletions later on */ |