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shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs

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commit 36ce9d76b0a93bae799e27e4f5ac35478c676592 upstream.

As the ramfs-based tmpfs uses ramfs_init_fs_context() for the
init_fs_context method, which allocates fc->s_fs_info, use ramfs_kill_sb()
to free it and avoid a memory leak.

Link: https://lkml.kernel.org/r/20230607161523.2876433-1-roberto.sassu@huaweicloud.com
Fixes: c3b1b1cbf0 ("ramfs: add support for "mode=" mount option")
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Roberto Sassu
2023-06-07 18:15:23 +02:00
committed by Greg Kroah-Hartman
parent 79bef379d5
commit 5fada37511
3 changed files with 3 additions and 2 deletions
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2
fs/ramfs/inode.c
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@@ -264,7 +264,7 @@ int ramfs_init_fs_context(struct fs_context *fc)
return 0;
}
static void ramfs_kill_sb(struct super_block *sb)
void ramfs_kill_sb(struct super_block *sb)
{
kfree(sb->s_fs_info);
kill_litter_super(sb);