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jffs2: NULL return of kmem_cache_zalloc should be handled

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NULL return of kmem_cache_zalloc should be handled in jffs2_alloc_xattr_datum
and jff2_alloc_xattr_ref.

Signed-off-by: Zhouyi Zhou <yizhouzhou@ict.ac.cn>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Zhouyi Zhou 2013-12-02 18:37:05 +08:00 committed by Brian Norris
parent 20171642ed
commit 2072552c33
1 changed files with 4 additions and 0 deletions
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4
fs/jffs2/malloc.c
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@ -288,6 +288,8 @@ struct jffs2_xattr_datum *jffs2_alloc_xattr_datum(void)
struct jffs2_xattr_datum *xd; struct jffs2_xattr_datum *xd;
xd = kmem_cache_zalloc(xattr_datum_cache, GFP_KERNEL); xd = kmem_cache_zalloc(xattr_datum_cache, GFP_KERNEL);
dbg_memalloc("%p\n", xd); dbg_memalloc("%p\n", xd);
if (!xd)
return NULL;
xd->class = RAWNODE_CLASS_XATTR_DATUM; xd->class = RAWNODE_CLASS_XATTR_DATUM;
xd->node = (void *)xd; xd->node = (void *)xd;
@ -306,6 +308,8 @@ struct jffs2_xattr_ref *jffs2_alloc_xattr_ref(void)
struct jffs2_xattr_ref *ref; struct jffs2_xattr_ref *ref;
ref = kmem_cache_zalloc(xattr_ref_cache, GFP_KERNEL); ref = kmem_cache_zalloc(xattr_ref_cache, GFP_KERNEL);
dbg_memalloc("%p\n", ref); dbg_memalloc("%p\n", ref);
if (!ref)
return NULL;
ref->class = RAWNODE_CLASS_XATTR_REF; ref->class = RAWNODE_CLASS_XATTR_REF;
ref->node = (void *)ref; ref->node = (void *)ref;