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[media] videobuf2-dma-sg: fix possible memory leak

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Fix the return when 'buf->pages' allocation error.

Signed-off-by: Geyslan G. Bem <geyslan@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
This commit is contained in:
Geyslan G. Bem 2013-11-20 18:02:52 -03:00 committed by Mauro Carvalho Chehab
parent a5e3d743cb
commit 64c832a4f7
1 changed files with 2 additions and 1 deletions
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3
drivers/media/v4l2-core/videobuf2-dma-sg.c
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@ -178,7 +178,7 @@ static void *vb2_dma_sg_get_userptr(void *alloc_ctx, unsigned long vaddr,
buf->pages = kzalloc(buf->num_pages * sizeof(struct page *),
GFP_KERNEL);
if (!buf->pages)
return NULL;
goto userptr_fail_alloc_pages;
num_pages_from_user = get_user_pages(current, current->mm,
vaddr & PAGE_MASK,
@ -204,6 +204,7 @@ userptr_fail_get_user_pages:
while (--num_pages_from_user >= 0)
put_page(buf->pages[num_pages_from_user]);
kfree(buf->pages);
userptr_fail_alloc_pages:
kfree(buf);
return NULL;
}