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authorRohit Vaswani <rvaswani@codeaurora.org>2015-10-22 13:32:11 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-10-23 17:55:10 +0900
commit67a2e213e7e937c41c52ab5bc46bf3f4de469f6e (patch)
tree7bc4c737953328c9deda1704bcfb1d7432b4b6b2 /include/linux/cma.h
parent5211613978cb7353a3237e4372958c0e7514683f (diff)
mm: cma: fix incorrect type conversion for size during dma allocation
This was found during userspace fuzzing test when a large size dma cma allocation is made by driver(like ion) through userspace. show_stack+0x10/0x1c dump_stack+0x74/0xc8 kasan_report_error+0x2b0/0x408 kasan_report+0x34/0x40 __asan_storeN+0x15c/0x168 memset+0x20/0x44 __dma_alloc_coherent+0x114/0x18c Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/cma.h')
-rw-r--r--include/linux/cma.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/cma.h b/include/linux/cma.h
index f7ef093ec49a..29f9e774ab76 100644
--- a/include/linux/cma.h
+++ b/include/linux/cma.h
@@ -26,6 +26,6 @@ extern int __init cma_declare_contiguous(phys_addr_t base,
extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
unsigned int order_per_bit,
struct cma **res_cma);
-extern struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align);
+extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align);
extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count);
#endif