Notify memory tools about usercopy events in copy_to_user_page() and copy_from_user_page(). Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx> Reviewed-by: Marco Elver <elver@xxxxxxxxxx> --- v5: -- cast user pointers to `void __user *` Link: https://linux-review.googlesource.com/id/Ic1ee8da1886325f46ad67f52176f48c2c836c48f --- include/asm-generic/cacheflush.h | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/include/asm-generic/cacheflush.h b/include/asm-generic/cacheflush.h index 4f07afacbc239..f46258d1a080f 100644 --- a/include/asm-generic/cacheflush.h +++ b/include/asm-generic/cacheflush.h @@ -2,6 +2,8 @@ #ifndef _ASM_GENERIC_CACHEFLUSH_H #define _ASM_GENERIC_CACHEFLUSH_H +#include <linux/instrumented.h> + struct mm_struct; struct vm_area_struct; struct page; @@ -105,14 +107,22 @@ static inline void flush_cache_vunmap(unsigned long start, unsigned long end) #ifndef copy_to_user_page #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ do { \ + instrument_copy_to_user((void __user *)dst, src, len); \ memcpy(dst, src, len); \ flush_icache_user_page(vma, page, vaddr, len); \ } while (0) #endif + #ifndef copy_from_user_page -#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ - memcpy(dst, src, len) +#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ + do { \ + instrument_copy_from_user_before(dst, (void __user *)src, \ + len); \ + memcpy(dst, src, len); \ + instrument_copy_from_user_after(dst, (void __user *)src, len, \ + 0); \ + } while (0) #endif #endif /* _ASM_GENERIC_CACHEFLUSH_H */ -- 2.37.2.672.g94769d06f0-goog
