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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Peter Oberparleiter <oberpar@linux.ibm.com>,
	Colin Ian King <colin.king@canonical.com>,
	Leon Romanovsky <leonro@nvidia.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Sasha Levin <sashal@kernel.org>
Subject: [PATCH AUTOSEL 5.8 27/29] gcov: add support for GCC 10.1
Date: Mon, 14 Sep 2020 09:03:56 -0400	[thread overview]
Message-ID: <20200914130358.1804194-27-sashal@kernel.org> (raw)
In-Reply-To: <20200914130358.1804194-1-sashal@kernel.org>

From: Peter Oberparleiter <oberpar@linux.ibm.com>

[ Upstream commit 40249c6962075c040fd071339acae524f18bfac9 ]

Using gcov to collect coverage data for kernels compiled with GCC 10.1
causes random malfunctions and kernel crashes.  This is the result of a
changed GCOV_COUNTERS value in GCC 10.1 that causes a mismatch between
the layout of the gcov_info structure created by GCC profiling code and
the related structure used by the kernel.

Fix this by updating the in-kernel GCOV_COUNTERS value.  Also re-enable
config GCOV_KERNEL for use with GCC 10.

Reported-by: Colin Ian King <colin.king@canonical.com>
Reported-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Tested-by: Leon Romanovsky <leonro@nvidia.com>
Tested-and-Acked-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/gcov/gcc_4_7.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/gcov/gcc_4_7.c b/kernel/gcov/gcc_4_7.c
index 908fdf5098c32..53c67c87f141b 100644
--- a/kernel/gcov/gcc_4_7.c
+++ b/kernel/gcov/gcc_4_7.c
@@ -19,7 +19,9 @@
 #include <linux/vmalloc.h>
 #include "gcov.h"
 
-#if (__GNUC__ >= 7)
+#if (__GNUC__ >= 10)
+#define GCOV_COUNTERS			8
+#elif (__GNUC__ >= 7)
 #define GCOV_COUNTERS			9
 #elif (__GNUC__ > 5) || (__GNUC__ == 5 && __GNUC_MINOR__ >= 1)
 #define GCOV_COUNTERS			10
-- 
2.25.1


  parent reply	other threads:[~2020-09-14 17:05 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-14 13:03 [PATCH AUTOSEL 5.8 01/29] xprtrdma: Release in-flight MRs on disconnect Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 02/29] NFSv4.1 handle ERR_DELAY error reclaiming locking state on delegation recall Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 03/29] phy: omap-usb2-phy: disable PHY charger detect Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 04/29] habanalabs: prevent user buff overflow Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 05/29] habanalabs: fix report of RAZWI initiator coordinates Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 06/29] scsi: pm8001: Fix memleak in pm8001_exec_internal_task_abort Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 07/29] scsi: libfc: Fix for double free() Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 08/29] scsi: lpfc: Fix FLOGI/PLOGI receive race condition in pt2pt discovery Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 09/29] scsi: lpfc: Extend the RDF FPIN Registration descriptor for additional events Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 10/29] regulator: pwm: Fix machine constraints application Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 11/29] spi: spi-loopback-test: Fix out-of-bounds read Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 12/29] interconnect: Show bandwidth for disabled paths as zero in debugfs Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 13/29] NFS: Zero-stateid SETATTR should first return delegation Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 14/29] SUNRPC: stop printk reading past end of string Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 15/29] rapidio: Replace 'select' DMAENGINES 'with depends on' Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 16/29] cifs: fix DFS mount with cifsacl/modefromsid Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 17/29] kobject: Drop unneeded conditional in __kobject_del() Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 18/29] openrisc: Fix cache API compile issue when not inlining Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 19/29] nvme-fc: cancel async events before freeing event struct Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 20/29] nvme-rdma: " Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 21/29] nvme-tcp: " Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 22/29] block: only call sched requeue_request() for scheduled requests Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 23/29] f2fs: fix indefinite loop scanning for free nid Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 24/29] f2fs: Return EOF on unaligned end of file DIO read Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 25/29] i2c: algo: pca: Reapply i2c bus settings after reset Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 26/29] spi: Fix memory leak on splited transfers Sasha Levin
2020-09-14 13:03 ` Sasha Levin [this message]
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 28/29] KVM: Check the allocation of pv cpu mask Sasha Levin
2020-09-14 13:03 ` [PATCH AUTOSEL 5.8 29/29] KVM: MIPS: Change the definition of kvm type Sasha Levin

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