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Message-ID: <20121020014553.GA6785@www.outflux.net> Date: Fri, 19 Oct 2012 18:45:53 -0700 From: Kees Cook <keescook@...omium.org> To: Linus Torvalds <torvalds@...ux-foundation.org> Cc: linux-kernel@...r.kernel.org, Fengguang Wu <fengguang.wu@...el.com>, Andrew Morton <akpm@...ux-foundation.org> Subject: [PATCH] use clamp_t in UNAME26 fix 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.wu@...el.com> Signed-off-by: Kees Cook <keescook@...omium.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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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