use clamp_t in UNAME26 fix

31fd84b9 · Kees Cook <[email protected]> · 2012-10-19 18:45:53 -07:00

The min/max call needed to have explicit types on some architectures
(e.g. mn10300). Use clamp_t instead to avoid the warning:

  kernel/sys.c: In function 'override_release':
  kernel/sys.c:1287:10: warning: comparison of distinct pointer types lacks a cast [enabled by default]

Reported-by: Fengguang Wu <[email protected]>
Signed-off-by: Kees Cook <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Commit: 31fd84b95eb211d5db460a1dda85e004800a7b52
Parents: 8c1bee68

Changes

1 files changed · +1 −1

File	Status	Add	Del	Content
kernel/sys.c	modified	+1	−1	View file

kernel/sys.c

View file

diff --git a/kernel/sys.c b/kernel/sys.c
index 01865c6..e6e0ece 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1284,7 +1284,7 @@ static int override_release(char __user *release, size_t len)
 			rest++;
 		}
 		v = ((LINUX_VERSION_CODE >> 8) & 0xff) + 40;
-		copy = min(sizeof(buf), max_t(size_t, 1, len));
+		copy = clamp_t(size_t, len, 1, sizeof(buf));
 		copy = scnprintf(buf, copy, "2.6.%u%s", v, rest);
 		ret = copy_to_user(release, buf, copy + 1);
 	}