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

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In ubifs_mount(), 'c' is allocated through kzalloc() in alloc_ubifs_info().
However, it is not deallocated in the following execution if
ubifs_fill_super() fails, leading to a memory leak bug. To fix this issue,
free 'c' before going to the 'out_deact' label.

Fixes: 1e51764a3c ("UBIFS: add new flash file system")
Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Wenwen Wang 2019-08-19 23:44:24 -05:00 committed by Richard Weinberger
parent 7992e00469
commit 9163e0184b
1 changed files with 3 additions and 1 deletions
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4
fs/ubifs/super.c
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@ -2256,8 +2256,10 @@ 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)
if (err) {
kfree(c);
goto out_deact;
}
/* We do not support atime */
sb->s_flags |= SB_ACTIVE;
if (IS_ENABLED(CONFIG_UBIFS_ATIME_SUPPORT))