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vfs/xattr: mm/shmem: kernfs: release simple xattr entry in a right way 

After commit fdc85222d5 ("kernfs: kvmalloc xattr value instead of
kmalloc"), simple xattr entry is allocated with kvmalloc() instead of
kmalloc(), so we should release it with kvfree() instead of kfree().

Fixes: fdc85222d5 ("kernfs: kvmalloc xattr value instead of kmalloc")
Signed-off-by: Chengguang Xu <cgxu519@mykernel.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Daniel Xu <dxu@dxuuu.xyz>
Cc: Chris Down <chris@chrisdown.name>
Cc: Andreas Dilger <adilger@dilger.ca>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: <stable@vger.kernel.org>	[5.7]
Link: http://lkml.kernel.org/r/20200704051608.15043-1-cgxu519@mykernel.net
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Chengguang Xu 2020-07-23 21:15:14 -07:00 committed by Linus Torvalds
parent 246c320a8c
commit 3bef735ad7
2 changed files with 3 additions and 2 deletions
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3
include/linux/xattr.h
View File

@ -15,6 +15,7 @@
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
#include <uapi/linux/xattr.h>
struct inode;
@ -94,7 +95,7 @@ static inline void simple_xattrs_free(struct simple_xattrs *xattrs)
list_for_each_entry_safe(xattr, node, &xattrs->head, list) {
kfree(xattr->name);
kfree(xattr);
kvfree(xattr);
}
}

2
mm/shmem.c
View File

@ -3178,7 +3178,7 @@ static int shmem_initxattrs(struct inode *inode,
new_xattr->name = kmalloc(XATTR_SECURITY_PREFIX_LEN + len,
GFP_KERNEL);
if (!new_xattr->name) {
kfree(new_xattr);
kvfree(new_xattr);
return -ENOMEM;
}