This is a note to let you know that I've just added the patch titled
efivarfs: Free s_fs_info on unmount
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
efivarfs-free-s_fs_info-on-unmount.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit a500d502e8814a1e0d57f7c3c68ddbe3d3e3c7b0
Author: Ard Biesheuvel <ardb@xxxxxxxxxx>
Date: Fri Dec 8 17:39:28 2023 +0100
efivarfs: Free s_fs_info on unmount
[ Upstream commit 547713d502f7b4b8efccd409cff84d731a23853b ]
Now that we allocate a s_fs_info struct on fs context creation, we
should ensure that we free it again when the superblock goes away.
Fixes: 5329aa5101f7 ("efivarfs: Add uid/gid mount options")
Signed-off-by: Ard Biesheuvel <ardb@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/efivarfs/super.c b/fs/efivarfs/super.c
index 05c01694e852..d59d9670965c 100644
--- a/fs/efivarfs/super.c
+++ b/fs/efivarfs/super.c
@@ -299,6 +299,8 @@ static int efivarfs_init_fs_context(struct fs_context *fc)
static void efivarfs_kill_sb(struct super_block *sb)
{
+ struct efivarfs_fs_info *sfi = sb->s_fs_info;
+
kill_litter_super(sb);
if (!efivar_is_available())
@@ -306,6 +308,7 @@ static void efivarfs_kill_sb(struct super_block *sb)
/* Remove all entries and destroy */
efivar_entry_iter(efivarfs_destroy, &efivarfs_list, NULL);
+ kfree(sfi);
}
static struct file_system_type efivarfs_type = {
