30 Mar
2024
30 Mar
'24
2:05 a.m.
On Fri, Mar 29, 2024 at 08:37:40AM -0400, Sasha Levin wrote:
From: Kees Cook keescook@chromium.org
[ Upstream commit d4be85d068b4418c341f79b654399f7f0891069a ]
The UBSAN instrumentation cannot work in the vDSO since it is executing in userspace, so disable it in the Makefile. Fixes the build failures such as:
arch/sparc/vdso/vclock_gettime.c:217: undefined reference to `__ubsan_handle_shift_out_of_bounds'
Acked-by: Sam Ravnborg sam@ravnborg.org Link: https://lore.kernel.org/all/20240224073617.GA2959352@ravnborg.org Signed-off-by: Kees Cook keescook@chromium.org Signed-off-by: Sasha Levin sashal@kernel.org
This is harmless to backport, but doesn't do anything. (The UBSAN changes needing this are only in Linus's tree.)
-Kees
--
Kees Cook