Hi Vyacheslav,

On 03/30/2013 03:35 PM, Vyacheslav Dubeyko wrote:
Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshi...@ispras.ru>
---
fs/hfs/catalog.c |   12 +++++++++---
fs/hfs/dir.c     |    8 ++++++--
fs/hfs/extent.c  |   48 +++++++++++++++++++++++++++++++++---------------
fs/hfs/hfs_fs.h  |    2 +-
fs/hfs/inode.c   |   11 +++++++++--
fs/hfs/super.c   |    4 +++-
6 files changed, 61 insertions(+), 24 deletions(-)

diff --git a/fs/hfs/catalog.c b/fs/hfs/catalog.c
index 424b033..9569b39 100644
--- a/fs/hfs/catalog.c
+++ b/fs/hfs/catalog.c
@@ -92,7 +92,9 @@ int hfs_cat_create(u32 cnid, struct inode *dir, struct qstr 
*str, struct inode *
                return -ENOSPC;

        sb = dir->i_sb;
-       hfs_find_init(HFS_SB(sb)->cat_tree, &fd);
+       err = hfs_find_init(HFS_SB(sb)->cat_tree, &fd);
+       if (err)
+               return err;

        hfs_cat_build_key(sb, fd.search_key, cnid, NULL);
        entry_size = hfs_cat_build_thread(sb, &entry, S_ISDIR(inode->i_mode) ?
@@ -214,7 +216,9 @@ int hfs_cat_delete(u32 cnid, struct inode *dir, struct qstr 
*str)

        dprint(DBG_CAT_MOD, "delete_cat: %s,%u\n", str ? str->name : NULL, 
cnid);
        sb = dir->i_sb;
-       hfs_find_init(HFS_SB(sb)->cat_tree, &fd);
+       res = hfs_find_init(HFS_SB(sb)->cat_tree, &fd);
+       if (res)
+               return res;

        hfs_cat_build_key(sb, fd.search_key, dir->i_ino, str);
        res = hfs_brec_find(&fd);
@@ -281,7 +285,9 @@ int hfs_cat_move(u32 cnid, struct inode *src_dir, struct 
qstr *src_name,
        dprint(DBG_CAT_MOD, "rename_cat: %u - %lu,%s - %lu,%s\n", cnid, 
src_dir->i_ino, src_name->name,
                dst_dir->i_ino, dst_name->name);
        sb = src_dir->i_sb;
-       hfs_find_init(HFS_SB(sb)->cat_tree, &src_fd);
+       err = hfs_find_init(HFS_SB(sb)->cat_tree, &src_fd);
+       if (err)
+               return err;
        dst_fd = src_fd;

        /* find the old dir entry and read the data */
diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c
index 5f7f1ab..e1c8048 100644
--- a/fs/hfs/dir.c
+++ b/fs/hfs/dir.c
@@ -25,7 +25,9 @@ static struct dentry *hfs_lookup(struct inode *dir, struct 
dentry *dentry,
        struct inode *inode = NULL;
        int res;

-       hfs_find_init(HFS_SB(dir->i_sb)->cat_tree, &fd);
+       res = hfs_find_init(HFS_SB(dir->i_sb)->cat_tree, &fd);
+       if (res)
+               return ERR_PTR(res);
        hfs_cat_build_key(dir->i_sb, fd.search_key, dir->i_ino, 
&dentry->d_name);
        res = hfs_brec_read(&fd, &rec, sizeof(rec));
        if (res) {
@@ -63,7 +65,9 @@ static int hfs_readdir(struct file *filp, void *dirent, 
filldir_t filldir)
        if (filp->f_pos >= inode->i_size)
                return 0;

-       hfs_find_init(HFS_SB(sb)->cat_tree, &fd);
+       err = hfs_find_init(HFS_SB(sb)->cat_tree, &fd);
+       if (err)
+               return err;
        hfs_cat_build_key(sb, fd.search_key, inode->i_ino, NULL);
        err = hfs_brec_find(&fd);
        if (err)
diff --git a/fs/hfs/extent.c b/fs/hfs/extent.c
index a67955a..813447b 100644
--- a/fs/hfs/extent.c
+++ b/fs/hfs/extent.c
@@ -107,7 +107,7 @@ static u16 hfs_ext_lastblock(struct hfs_extent *ext)
        return be16_to_cpu(ext->block) + be16_to_cpu(ext->count);
}

-static void __hfs_ext_write_extent(struct inode *inode, struct hfs_find_data 
*fd)
+static int __hfs_ext_write_extent(struct inode *inode, struct hfs_find_data 
*fd)
{
        int res;

@@ -116,26 +116,31 @@ static void __hfs_ext_write_extent(struct inode *inode, 
struct hfs_find_data *fd
        res = hfs_brec_find(fd);
        if (HFS_I(inode)->flags & HFS_FLG_EXT_NEW) {
                if (res != -ENOENT)
-                       return;
+                       return res;
                hfs_brec_insert(fd, HFS_I(inode)->cached_extents, 
sizeof(hfs_extent_rec));
                HFS_I(inode)->flags &= ~(HFS_FLG_EXT_DIRTY|HFS_FLG_EXT_NEW);
        } else {
                if (res)
-                       return;
+                       return res;
                hfs_bnode_write(fd->bnode, HFS_I(inode)->cached_extents, 
fd->entryoffset, fd->entrylength);
                HFS_I(inode)->flags &= ~HFS_FLG_EXT_DIRTY;
        }
+       return 0;
}
As I see, this fix makes sense and for hfsplus also. Please, make it and for 
hfsplus.
Sorry, I did not catch which fix do you mean. Could you please clarify it.

Thank you,
Alexey

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