| Context |
Check |
Description |
| snowpatch_ozlabs/apply_patch |
warning
|
Failed to apply on branch powerpc/merge (626a6c3d2e20da80aaa710104f34ea6037b28b33)
|
| snowpatch_ozlabs/apply_patch |
warning
|
Failed to apply on branch powerpc/next (6895c5ba7bdcc55eacad03cf309ab23be63b9cac)
|
| snowpatch_ozlabs/apply_patch |
warning
|
Failed to apply on branch linus/master (92bf22614b21a2706f4993b278017e437f7785b3)
|
| snowpatch_ozlabs/apply_patch |
warning
|
Failed to apply on branch powerpc/fixes (24321ac668e452a4942598533d267805f291fdc9)
|
| snowpatch_ozlabs/apply_patch |
warning
|
Failed to apply on branch linux-next (1e0d27fce010b0a4a9e595506b6ede75934c31be)
|
| snowpatch_ozlabs/apply_patch |
fail
|
Failed to apply to any branch
|
@@ -487,6 +487,27 @@ user_write_access_begin(const void __user *ptr, size_t len)
#define unsafe_put_user(x, p, e) \
__unsafe_put_user_goto((__typeof__(*(p)))(x), (p), sizeof(*(p)), e)
+#define unsafe_copy_from_user(d, s, l, e) \
+do { \
+ u8 *_dst = (u8 *)(d); \
+ const u8 __user *_src = (const u8 __user *)(s); \
+ size_t _len = (l); \
+ int _i; \
+ \
+ for (_i = 0; _i < (_len & ~(sizeof(long) - 1)); _i += sizeof(long)) \
+ unsafe_get_user(*(long *)(_dst + _i), (long __user *)(_src + _i), e); \
+ if (IS_ENABLED(CONFIG_PPC64) && (_len & 4)) { \
+ unsafe_get_user(*(u32 *)(_dst + _i), (u32 __user *)(_src + _i), e); \
+ _i += 4; \
+ } \
+ if (_len & 2) { \
+ unsafe_get_user(*(u16 *)(_dst + _i), (u16 __user *)(_src + _i), e); \
+ _i += 2; \
+ } \
+ if (_len & 1) \
+ unsafe_get_user(*(u8 *)(_dst + _i), (u8 __user *)(_src + _i), e); \
+} while (0)
+
#define unsafe_copy_to_user(d, s, l, e) \
do { \
u8 __user *_dst = (u8 __user *)(d); \
Use the same approach as unsafe_copy_to_user() but instead call unsafe_get_user() in a loop. Signed-off-by: Christopher M. Riedl <cmr@codefail.de> --- v7: * Change implementation to call unsafe_get_user() and remove dja's 'Reviewed-by' tag --- arch/powerpc/include/asm/uaccess.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)