From: Ard Biesheuvel <ardb@kernel.org>
Date: Fri, 8 Dec 2023 16:39:28 +0000 (+0100)
Subject: efivarfs: Free s_fs_info on unmount
X-Git-Tag: v6.8-rc1~162^2~8
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=547713d502f7b4b8efccd409cff84d731a23853b;p=thirdparty%2Flinux.git

efivarfs: Free s_fs_info on unmount

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@kernel.org>
---

diff --git a/fs/efivarfs/super.c b/fs/efivarfs/super.c
index d4530e4eac06a..f954b1fab9159 100644
--- a/fs/efivarfs/super.c
+++ b/fs/efivarfs/super.c
@@ -368,10 +368,13 @@ 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);
 
 	/* Remove all entries and destroy */
 	efivar_entry_iter(efivarfs_destroy, &efivarfs_list, NULL);
+	kfree(sfi);
 }
 
 static struct file_system_type efivarfs_type = {