5.10-stable review patch. If anyone has any objections, please let me know.
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From: Keith Busch kbusch@kernel.org
[ Upstream commit 4578be130a6470d85ff05b13b75a00e6224eeeeb ]
A 'false' return means the value was safely set, so the comment should say 'true' for when it is not considered safe.
Cc: Jason Gunthorpe jgg@ziepe.ca Signed-off-by: Keith Busch kbusch@kernel.org Signed-off-by: Kees Cook keescook@chromium.org Signed-off-by: Eliav Farber farbere@amazon.com Fixes: 0c66847793d1 ("overflow.h: Add arithmetic shift helper") Link: https://lore.kernel.org/r/20210401160629.1941787-1-kbusch@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- include/linux/overflow.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/linux/overflow.h +++ b/include/linux/overflow.h @@ -235,7 +235,7 @@ static inline bool __must_check __must_c * - 'a << s' sets the sign bit, if any, in '*d'. * * '*d' will hold the results of the attempted shift, but is not - * considered "safe for use" if false is returned. + * considered "safe for use" if true is returned. */ #define check_shl_overflow(a, s, d) __must_check_overflow(({ \ typeof(a) _a = a; \