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Revert "ubifs: Fix memory leak bug in alloc_ubifs_info() error path"

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commit 91cbf01178c37086b32148c53e24b04cb77557cf upstream.

This reverts commit 9163e0184b.

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: 9163e0184b ("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>
This commit is contained in:
Richard Weinberger 2019-10-24 10:25:35 +02:00 committed by Greg Kroah-Hartman
parent d4da9d7d50
commit e071addacd
1 changed files with 1 additions and 3 deletions
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4
fs/ubifs/super.c
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@ -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))