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| author |   Richard Weinberger <richard@nod.at> | 2019-10-24 10:25:35 +0200 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2019-11-17 22:22:53 +0100 |
| commit | 91cbf01178c37086b32148c53e24b04cb77557cf (patch) | |
| tree | 7157e992467542d9a4125399eadea2e0bcc6d9fc /fs/ubifs | |
| parent | ubifs: Fix type of sup->hash_algo (diff) | |
| download | wireguard-linux-91cbf01178c37086b32148c53e24b04cb77557cf.tar.xz wireguard-linux-91cbf01178c37086b32148c53e24b04cb77557cf.zip | |
Revert "ubifs: Fix memory leak bug in alloc_ubifs_info() error path"
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>
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)) |