From: Leon Romanovsky <leo...@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-l...@kernel.org Link: https://lore.kernel.org/lkml/CAHk-=whbijesdsvx-xcr0dpmj0biwhj+uinndsvzcr_h_kg...@mail.gmail.com/ Cc: Colin Ian King <colin.k...@canonical.com> Signed-off-by: Leon Romanovsky <leo...@nvidia.com> Signed-off-by: Linus Torvalds <torva...@linux-foundation.org> Signed-off-by: Sasha Levin <sas...@kernel.org> --- kernel/gcov/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/gcov/Kconfig b/kernel/gcov/Kconfig index 1e3823fa799b2..bfb6579a19d07 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
