From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>,
Borislav Petkov <bp@alien8.de>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>, Sasha Levin <sashal@kernel.org>
Subject: [PATCH AUTOSEL 4.19 01/36] x86/uaccess, kcov: Disable stack protector
Date: Tue, 4 Jun 2019 19:22:56 -0400 [thread overview]
Message-ID: <20190604232333.7185-1-sashal@kernel.org> (raw)
From: Peter Zijlstra <peterz@infradead.org>
[ Upstream commit 40ea97290b08be2e038b31cbb33097d1145e8169 ]
New tooling noticed this mishap:
kernel/kcov.o: warning: objtool: write_comp_data()+0x138: call to __stack_chk_fail() with UACCESS enabled
kernel/kcov.o: warning: objtool: __sanitizer_cov_trace_pc()+0xd9: call to __stack_chk_fail() with UACCESS enabled
All the other instrumentation (KASAN,UBSAN) also have stack protector
disabled.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
kernel/Makefile | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/Makefile b/kernel/Makefile
index 7a63d567fdb5..df5e3ca30acd 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -30,6 +30,7 @@ KCOV_INSTRUMENT_extable.o := n
# Don't self-instrument.
KCOV_INSTRUMENT_kcov.o := n
KASAN_SANITIZE_kcov.o := n
+CFLAGS_kcov.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector)
# cond_syscall is currently not LTO compatible
CFLAGS_sys_ni.o = $(DISABLE_LTO)
--
2.20.1
next reply other threads:[~2019-06-04 23:23 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-04 23:22 Sasha Levin [this message]
2019-06-04 23:22 ` [PATCH AUTOSEL 4.19 02/36] ALSA: seq: Protect in-kernel ioctl calls with mutex Sasha Levin
2019-06-04 23:22 ` [PATCH AUTOSEL 4.19 03/36] ALSA: seq: Fix race of get-subscription call vs port-delete ioctls Sasha Levin
2019-06-04 23:22 ` [PATCH AUTOSEL 4.19 04/36] Revert "ALSA: seq: Protect in-kernel ioctl calls with mutex" Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 05/36] ALSA: seq: Cover unsubscribe_port() in list_mutex Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 06/36] s390/kasan: fix strncpy_from_user kasan checks Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 07/36] driver core: platform: Fix the usage of platform device name(pdev->name) Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 08/36] Drivers: misc: fix out-of-bounds access in function param_set_kgdbts_var Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 09/36] configfs: fix possible use-after-free in configfs_register_group Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 10/36] f2fs: fix to avoid accessing xattr across the boundary Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 11/36] ipc: prevent lockup on alloc_msg and free_msg Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 12/36] scsi: qedi: remove memset/memcpy to nfunc and use func instead Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 13/36] scsi: qedi: remove set but not used variables 'cdev' and 'udev' Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 14/36] scsi: lpfc: correct rcu unlock issue in lpfc_nvme_info_show Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 15/36] scsi: lpfc: add check for loss of ndlp when sending RRQ Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 16/36] arm64/mm: Inhibit huge-vmap with ptdump Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 17/36] nvme: fix srcu locking on error return in nvme_get_ns_from_disk Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 18/36] nvme: remove the ifdef around nvme_nvm_ioctl Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 19/36] nvme: merge nvme_ns_ioctl into nvme_ioctl Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 20/36] nvme: release namespace SRCU protection before performing controller ioctls Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 21/36] nvme: fix memory leak for power latency tolerance Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 22/36] platform/x86: pmc_atom: Add Lex 3I380D industrial PC to critclk_systems DMI table Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 23/36] platform/x86: pmc_atom: Add several Beckhoff Automation boards " Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 24/36] scsi: bnx2fc: fix incorrect cast to u64 on shift operation Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 25/36] libnvdimm: Fix compilation warnings with W=1 Sasha Levin
2019-06-04 23:23 ` [PATCH AUTOSEL 4.19 26/36] selftests: fib_rule_tests: fix local IPv4 address typo Sasha Levin
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