The patch titled
Subject: gcov: disable gcov build with GCC 10
has been added to the -mm tree. Its filename is
gcov-disable-gcov-build-with-gcc-10.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/gcov-disable-gcov-build-with-gcc-10.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/gcov-disable-gcov-build-with-gcc-10.patch
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The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Leon Romanovsky <leonro@xxxxxxxxxx>
Subject: gcov: disable gcov build with GCC 10
GCOV built with GCC 10 doesn't initialize n_function variable. This
produces different kernel panics as was seen by Colin in Ubuntu [1] and me
in FC 32 [2].
As a workaround, let's disable GCOV build for broken GCC 10 version.
[1] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1891288
[2] https://lore.kernel.org/lkml/20200827133932.3338519-1-leon@xxxxxxxxxx
Link: https://lkml.kernel.org/r/20200904155808.4997-1-leon@xxxxxxxxxx
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxx>
Cc: Colin Ian King <colin.king@xxxxxxxxxxxxx>
Cc: Peter Oberparleiter <oberpar@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/gcov/Kconfig | 1 +
1 file changed, 1 insertion(+)
--- a/kernel/gcov/Kconfig~gcov-disable-gcov-build-with-gcc-10
+++ a/kernel/gcov/Kconfig
@@ -4,6 +4,7 @@ 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
_
Patches currently in -mm which might be from leonro@xxxxxxxxxx are
gcov-disable-gcov-build-with-gcc-10.patch
