mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 14:20:52 +07:00
67a2e213e7
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>
32 lines
920 B
C
32 lines
920 B
C
#ifndef __CMA_H__
|
|
#define __CMA_H__
|
|
|
|
/*
|
|
* There is always at least global CMA area and a few optional
|
|
* areas configured in kernel .config.
|
|
*/
|
|
#ifdef CONFIG_CMA_AREAS
|
|
#define MAX_CMA_AREAS (1 + CONFIG_CMA_AREAS)
|
|
|
|
#else
|
|
#define MAX_CMA_AREAS (0)
|
|
|
|
#endif
|
|
|
|
struct cma;
|
|
|
|
extern unsigned long totalcma_pages;
|
|
extern phys_addr_t cma_get_base(const struct cma *cma);
|
|
extern unsigned long cma_get_size(const struct cma *cma);
|
|
|
|
extern int __init cma_declare_contiguous(phys_addr_t base,
|
|
phys_addr_t size, phys_addr_t limit,
|
|
phys_addr_t alignment, unsigned int order_per_bit,
|
|
bool fixed, struct cma **res_cma);
|
|
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, size_t count, unsigned int align);
|
|
extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count);
|
|
#endif
|