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From: Andrew Morton <akpm@linux-foundation.org>
To: akpm@linux-foundation.org, andreyknvl@google.com,
	aryabinin@virtuozzo.com, dvyukov@google.com, glider@google.com,
	leonro@mellanox.com, linux-mm@kvack.org,
	mm-commits@vger.kernel.org, torvalds@linux-foundation.org
Subject: [patch 6/7] kasan: consistently disable debugging features
Date: Wed, 13 May 2020 17:50:51 -0700	[thread overview]
Message-ID: <20200514005051.lU7XkUgP7%akpm@linux-foundation.org> (raw)
In-Reply-To: <20200513175005.1f4839360c18c0238df292d1@linux-foundation.org>

From: Andrey Konovalov <andreyknvl@google.com>
Subject: kasan: consistently disable debugging features

KASAN is incompatible with some kernel debugging/tracing features. 
There's been multiple patches that disable those feature for some of KASAN
files one by one.  Instead of prolonging that, disable these features for
all KASAN files at once.

Link: http://lkml.kernel.org/r/29bd753d5ff5596425905b0b07f51153e2345cc1.1589297433.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/kasan/Makefile |   15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

--- a/mm/kasan/Makefile~kasan-consistently-disable-debugging-features
+++ a/mm/kasan/Makefile
@@ -1,23 +1,28 @@
 # SPDX-License-Identifier: GPL-2.0
 KASAN_SANITIZE := n
-UBSAN_SANITIZE_common.o := n
-UBSAN_SANITIZE_generic.o := n
-UBSAN_SANITIZE_generic_report.o := n
-UBSAN_SANITIZE_tags.o := n
+UBSAN_SANITIZE := n
 KCOV_INSTRUMENT := n
 
+# Disable ftrace to avoid recursion.
 CFLAGS_REMOVE_common.o = $(CC_FLAGS_FTRACE)
 CFLAGS_REMOVE_generic.o = $(CC_FLAGS_FTRACE)
 CFLAGS_REMOVE_generic_report.o = $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_init.o = $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_quarantine.o = $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_report.o = $(CC_FLAGS_FTRACE)
 CFLAGS_REMOVE_tags.o = $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_tags_report.o = $(CC_FLAGS_FTRACE)
 
 # Function splitter causes unnecessary splits in __asan_load1/__asan_store1
 # see: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63533
-
 CFLAGS_common.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector)
 CFLAGS_generic.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector)
 CFLAGS_generic_report.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector)
+CFLAGS_init.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector)
+CFLAGS_quarantine.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector)
+CFLAGS_report.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector)
 CFLAGS_tags.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector)
+CFLAGS_tags_report.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector)
 
 obj-$(CONFIG_KASAN) := common.o init.o report.o
 obj-$(CONFIG_KASAN_GENERIC) += generic.o generic_report.o quarantine.o
_


  parent reply	other threads:[~2020-05-14  0:50 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-14  0:50 incoming Andrew Morton
2020-05-14  0:50 ` [patch 1/7] mm, memcg: fix inconsistent oom event behavior Andrew Morton
2020-05-14  0:50 ` [patch 2/7] epoll: call final ep_events_available() check under the lock Andrew Morton
2020-05-14  0:50 ` [patch 3/7] mm/gup: fix fixup_user_fault() on multiple retries Andrew Morton
2020-05-14  0:50 ` [patch 4/7] userfaultfd: fix remap event with MREMAP_DONTUNMAP Andrew Morton
2020-05-14  0:50 ` [patch 5/7] ipc/util.c: sysvipc_find_ipc() incorrectly updates position index Andrew Morton
2020-05-14  0:50 ` Andrew Morton [this message]
2020-05-14  0:50 ` [patch 7/7] kasan: add missing functions declarations to kasan.h Andrew Morton
2020-05-14  3:31 ` mmotm 2020-05-13-20-30 uploaded Andrew Morton
2020-05-14 15:30   ` mmotm 2020-05-13-20-30 uploaded (gpu/drm/bridge/sil-sii8620) Randy Dunlap
2020-05-14 15:32   ` mmotm 2020-05-13-20-30 uploaded (objtool warnings) Randy Dunlap
2020-05-14 15:33     ` Randy Dunlap
2020-05-28 15:54     ` Josh Poimboeuf
2020-05-28 17:04       ` Josh Poimboeuf
2020-05-28 17:20     ` Peter Zijlstra
2020-05-29 13:57       ` Christoph Hellwig
2020-05-29 14:35         ` Peter Zijlstra
2020-05-29 14:53           ` Peter Zijlstra
2020-05-29 15:33             ` Peter Zijlstra
2020-05-29 16:05               ` Josh Poimboeuf
2020-05-29 16:12                 ` Peter Zijlstra
2020-05-29 16:50                   ` Josh Poimboeuf
2020-05-29 16:54                     ` Peter Zijlstra
2020-05-29 17:25                       ` [PATCH] x86/uaccess: Remove redundant likely/unlikely annotations Josh Poimboeuf
2020-05-29 18:29                         ` Randy Dunlap
2020-05-29 19:31                     ` mmotm 2020-05-13-20-30 uploaded (objtool warnings) Linus Torvalds
2020-05-29 20:08                       ` Al Viro
2020-05-29 20:14                         ` Al Viro
2020-05-15 23:30 ` mmotm 2020-05-15-16-29 uploaded Andrew Morton
2020-05-16  5:53   ` Stephen Rothwell
2020-05-18 23:15     ` Stephen Rothwell
2020-05-20  4:48 ` mmotm 2020-05-19-21-47 uploaded Andrew Morton
2020-05-22  3:43 ` mmotm 2020-05-21-20-42 uploaded Andrew Morton
2020-05-22 16:26   ` mmotm 2020-05-21-20-42 uploaded (atomisp) Randy Dunlap
2020-05-23  3:36 ` mmotm 2020-05-22-20-35 uploaded Andrew Morton
2020-05-23 15:08   ` mmotm 2020-05-22-20-35 uploaded (phy/intel/phy-intel-combo.c) Randy Dunlap

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