This patch fixes out of memory error handling in sysfs_new_dirent().
kmem_cache_free() with NULL is not allowed.
Cc: Greg Kroah-Hartman <[EMAIL PROTECTED]>
Signed-off-by: Akinobu Mita <[EMAIL PROTECTED]>
---
fs/sysfs/dir.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
Index: 2.6-mm/fs/sysfs/dir.c
===================================================================
--- 2.6-mm.orig/fs/sysfs/dir.c
+++ 2.6-mm/fs/sysfs/dir.c
@@ -361,20 +361,20 @@ static struct dentry_operations sysfs_de
struct sysfs_dirent *sysfs_new_dirent(const char *name, umode_t mode, int type)
{
char *dup_name = NULL;
- struct sysfs_dirent *sd = NULL;
+ struct sysfs_dirent *sd;
if (type & SYSFS_COPY_NAME) {
name = dup_name = kstrdup(name, GFP_KERNEL);
if (!name)
- goto err_out;
+ return NULL;
}
sd = kmem_cache_zalloc(sysfs_dir_cachep, GFP_KERNEL);
if (!sd)
- goto err_out;
+ goto err_out1;
if (sysfs_alloc_ino(&sd->s_ino))
- goto err_out;
+ goto err_out2;
atomic_set(&sd->s_count, 1);
atomic_set(&sd->s_active, 0);
@@ -386,9 +386,10 @@ struct sysfs_dirent *sysfs_new_dirent(co
return sd;
- err_out:
- kfree(dup_name);
+ err_out2:
kmem_cache_free(sysfs_dir_cachep, sd);
+ err_out1:
+ kfree(dup_name);
return NULL;
}
-
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