| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 09/46] gcov: Disable gcov build with GCC 10 | Date | Mon, 21 Sep 2020 18:27:25 +0200 |
| |
From: Leon Romanovsky <leonro@nvidia.com>
[ Upstream commit cfc905f158eaa099d6258031614d11869e7ef71c ]
GCOV built with GCC 10 doesn't initialize n_function variable. This produces different kernel panics as was seen by Colin in Ubuntu and me in FC 32.
As a workaround, let's disable GCOV build for broken GCC 10 version.
Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1891288 Link: https://lore.kernel.org/lkml/20200827133932.3338519-1-leon@kernel.org Link: https://lore.kernel.org/lkml/CAHk-=whbijeSdSvx-Xcr0DPMj0BiwhJ+uiNnDSVZcr_h_kg7UA@mail.gmail.com/ Cc: Colin Ian King <colin.king@canonical.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- kernel/gcov/Kconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/kernel/gcov/Kconfig b/kernel/gcov/Kconfig index 1276aabaab550..1d78ed19a3512 100644 --- a/kernel/gcov/Kconfig +++ b/kernel/gcov/Kconfig @@ -3,6 +3,7 @@ menu "GCOV-based kernel profiling" config GCOV_KERNEL bool "Enable gcov-based kernel profiling" depends on DEBUG_FS + depends on !CC_IS_GCC || GCC_VERSION < 100000 select CONSTRUCTORS if !UML default n ---help--- -- 2.25.1
|