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authorLeon Romanovsky <leonro@nvidia.com>2020-09-04 18:58:08 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-09-04 19:19:49 +0300
commitcfc905f158eaa099d6258031614d11869e7ef71c (patch)
treeda965309a734ac9908854d55cf4a19a90969c26d /kernel
parent7b81ce7cdcef3a3ae71eb3fb863433c646b4a2f4 (diff)
downloadlinux-cfc905f158eaa099d6258031614d11869e7ef71c.tar.xz
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 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>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/gcov/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/gcov/Kconfig b/kernel/gcov/Kconfig
index 3110c77230c7..bb4b680e8455 100644
--- a/kernel/gcov/Kconfig
+++ b/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
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