fuse: fix a NULL pointer dereference
diff mbox series

Message ID 1556518419-17986-1-git-send-email-zhangliguang@linux.alibaba.com
State New
Headers show
Series
  • fuse: fix a NULL pointer dereference
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Commit Message

luanshi April 29, 2019, 6:13 a.m. UTC
In case kzalloc fails, the fix returns NULL to avoid NULL pointer
dereference.

Signed-off-by: zhangliguang <zhangliguang@linux.alibaba.com>
---
 fs/fuse/dev.c | 3 +++
 1 file changed, 3 insertions(+)

Patch
diff mbox series

diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 9971a35..23e73d8 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -61,6 +61,9 @@  static struct page **fuse_req_pages_alloc(unsigned int npages, gfp_t flags,
 
 	pages = kzalloc(npages * (sizeof(struct page *) +
 				  sizeof(struct fuse_page_desc)), flags);
+	if (!pages)
+		return NULL;
+
 	*desc = (void *) pages + npages * sizeof(struct page *);
 
 	return pages;