lkml.org 
[lkml]   [2020]   [Sep]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH -rc v1] gcov: Disable gcov build with GCC 10
Date
From: Leon Romanovsky <leonro@nvidia.com>

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@kernel.org
Cc: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
As was discussed:
https://lore.kernel.org/lkml/CAHk-=whbijeSdSvx-Xcr0DPMj0BiwhJ+uiNnDSVZcr_h_kg7UA@mail.gmail.com/
---
kernel/gcov/Kconfig | 1 +
1 file changed, 1 insertion(+)

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
help
--
2.26.2
\
 
 \ /
  Last update: 2020-09-04 17:58    [W:0.068 / U:0.300 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site