This patch fixes the leak of sb->s_fs_info in both the HFS and HFS+
modules. In addition to this, it fixes an oops happening when trying to
mount a non-hfsplus filesystem using hfsplus. This patch is from Roman
Zippel, based off patches sent by myself. It's been included in 2.6.12-
rc4. See
http://www.kernel.org/git/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=945b092011c6af71a0107be96e119c8c08776f3f
(chrisw: backport to -stable)
Signed-off-by: Roman Zippel <[email protected]>
Signed-off-by: Colin Leroy <[email protected]>
Signed-off-by: Chris Wright <[email protected]>
fs/hfs/mdb.c | 5 +++++
fs/hfs/super.c | 8 +++-----
fs/hfsplus/super.c | 6 +++++-
3 files changed, 13 insertions(+), 6 deletions(-)
Index: release-2.6.11/fs/hfs/mdb.c
===================================================================
--- release-2.6.11.orig/fs/hfs/mdb.c
+++ release-2.6.11/fs/hfs/mdb.c
@@ -333,6 +333,8 @@ void hfs_mdb_close(struct super_block *s
* Release the resources associated with the in-core MDB. */
void hfs_mdb_put(struct super_block *sb)
{
+ if (!HFS_SB(sb))
+ return;
/* free the B-trees */
hfs_btree_close(HFS_SB(sb)->ext_tree);
hfs_btree_close(HFS_SB(sb)->cat_tree);
@@ -340,4 +342,7 @@ void hfs_mdb_put(struct super_block *sb)
/* free the buffers holding the primary and alternate MDBs */
brelse(HFS_SB(sb)->mdb_bh);
brelse(HFS_SB(sb)->alt_mdb_bh);
+
+ kfree(HFS_SB(sb));
+ sb->s_fs_info = NULL;
}
Index: release-2.6.11/fs/hfs/super.c
===================================================================
--- release-2.6.11.orig/fs/hfs/super.c
+++ release-2.6.11/fs/hfs/super.c
@@ -263,7 +263,7 @@ static int hfs_fill_super(struct super_b
res = -EINVAL;
if (!parse_options((char *)data, sbi)) {
hfs_warn("hfs_fs: unable to parse mount options.\n");
- goto bail3;
+ goto bail;
}
sb->s_op = &hfs_super_operations;
@@ -276,7 +276,7 @@ static int hfs_fill_super(struct super_b
hfs_warn("VFS: Can't find a HFS filesystem on dev %s.\n",
hfs_mdb_name(sb));
res = -EINVAL;
- goto bail2;
+ goto bail;
}
/* try to get the root inode */
@@ -306,10 +306,8 @@ bail_iput:
iput(root_inode);
bail_no_root:
hfs_warn("hfs_fs: get root inode failed.\n");
+bail:
hfs_mdb_put(sb);
-bail2:
-bail3:
- kfree(sbi);
return res;
}
Index: release-2.6.11/fs/hfsplus/super.c
===================================================================
--- release-2.6.11.orig/fs/hfsplus/super.c
+++ release-2.6.11/fs/hfsplus/super.c
@@ -207,7 +207,9 @@ static void hfsplus_write_super(struct s
static void hfsplus_put_super(struct super_block *sb)
{
dprint(DBG_SUPER, "hfsplus_put_super\n");
- if (!(sb->s_flags & MS_RDONLY)) {
+ if (!sb->s_fs_info)
+ return;
+ if (!(sb->s_flags & MS_RDONLY) && HFSPLUS_SB(sb).s_vhdr) {
struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr;
vhdr->modify_date = hfsp_now2mt();
@@ -223,6 +225,8 @@ static void hfsplus_put_super(struct sup
iput(HFSPLUS_SB(sb).alloc_file);
iput(HFSPLUS_SB(sb).hidden_dir);
brelse(HFSPLUS_SB(sb).s_vhbh);
+ kfree(sb->s_fs_info);
+ sb->s_fs_info = NULL;
}
static int hfsplus_statfs(struct super_block *sb, struct kstatfs *buf)
-
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