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 <fengguang...@intel.com>
Signed-off-by: Kees Cook <keesc...@chromium.org>
---
kernel/sys.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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);
}
--
1.7.9.5
--
Kees Cook
Chrome OS Security
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