diff options
| author | Richard Weinberger <richard@nod.at> | 2019-10-24 10:25:35 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-17 19:48:59 +0100 |
| commit | e071addacd06c8140fd0bc422dfb3a013000ac2b (patch) | |
| tree | a1d0f39c4685be4625dbf05c54cbabb48cce6f5d /fs/ubifs | |
| parent | d4da9d7d50a5c28c1ababa2e01ac947a19fe451c (diff) | |
Revert "ubifs: Fix memory leak bug in alloc_ubifs_info() error path"
commit 91cbf01178c37086b32148c53e24b04cb77557cf upstream.
This reverts commit 9163e0184bd7d5f779934d34581843f699ad2ffd.
At the point when ubifs_fill_super() runs, we have already a reference
to the super block. So upon deactivate_locked_super() c will get
free()'ed via ->kill_sb().
Cc: Wenwen Wang <wenwen@cs.uga.edu>
Fixes: 9163e0184bd7 ("ubifs: Fix memory leak bug in alloc_ubifs_info() error path")
Reported-by: https://twitter.com/grsecurity/status/1180609139359277056
Signed-off-by: Richard Weinberger <richard@nod.at>
Tested-by: Romain Izard <romain.izard.pro@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ubifs')
| -rw-r--r-- | fs/ubifs/super.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index 7d4547e5202d..5e1e8ec0589e 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -2267,10 +2267,8 @@ static struct dentry *ubifs_mount(struct file_system_type *fs_type, int flags, } } else { err = ubifs_fill_super(sb, data, flags & SB_SILENT ? 1 : 0); - if (err) { - kfree(c); + if (err) goto out_deact; - } /* We do not support atime */ sb->s_flags |= SB_ACTIVE; if (IS_ENABLED(CONFIG_UBIFS_ATIME_SUPPORT)) |