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authorKees Cook <keescook@chromium.org>2019-09-25 16:47:39 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-09-25 17:51:40 -0700
commit9dd819a15162f8f82a6001b090caa38c18297b39 (patch)
tree3dbec1875f99adf45fbf236dcfa53efd1497e8cb /include/linux/thread_info.h
parentd5372c39132958679c480d0295dd328c741c7a41 (diff)
uaccess: add missing __must_check attributes
The usercopy implementation comments describe that callers of the copy_*_user() family of functions must always have their return values checked. This can be enforced at compile time with __must_check, so add it where needed. Link: http://lkml.kernel.org/r/201908251609.ADAD5CAAC1@keescook Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/thread_info.h')
-rw-r--r--include/linux/thread_info.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h
index 8d8821b3689a..659a4400517b 100644
--- a/include/linux/thread_info.h
+++ b/include/linux/thread_info.h
@@ -134,7 +134,7 @@ static inline void copy_overflow(int size, unsigned long count)
WARN(1, "Buffer overflow detected (%d < %lu)!\n", size, count);
}
-static __always_inline bool
+static __always_inline __must_check bool
check_copy_size(const void *addr, size_t bytes, bool is_source)
{
int sz = __compiletime_object_size(addr);