From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Nicolas Boichat <drinkcat@chromium.org>,
Dmitry Vyukov <dvyukov@google.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Kees Cook <keescook@chromium.org>, Petr Mladek <pmladek@suse.com>,
Thomas Gleixner <tglx@linutronix.de>,
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
Joe Lawrence <joe.lawrence@redhat.com>,
Uladzislau Rezki <urezki@gmail.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Stephen Rothwell <sfr@canb.auug.org.au>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH AUTOSEL 4.14 23/23] kmemleak: increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE default to 16K
Date: Sun, 29 Sep 2019 13:35:33 -0400 [thread overview]
Message-ID: <20190929173535.9744-23-sashal@kernel.org> (raw)
In-Reply-To: <20190929173535.9744-1-sashal@kernel.org>
From: Nicolas Boichat <drinkcat@chromium.org>
[ Upstream commit b751c52bb587ae66f773b15204ef7a147467f4c7 ]
The current default value (400) is too low on many systems (e.g. some
ARM64 platform takes up 1000+ entries).
syzbot uses 16000 as default value, and has proved to be enough on beefy
configurations, so let's pick that value.
This consumes more RAM on boot (each entry is 160 bytes, so in total
~2.5MB of RAM), but the memory would later be freed (early_log is
__initdata).
Link: http://lkml.kernel.org/r/20190730154027.101525-1-drinkcat@chromium.org
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Suggested-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Joe Lawrence <joe.lawrence@redhat.com>
Cc: Uladzislau Rezki <urezki@gmail.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
lib/Kconfig.debug | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 131d5871f8c98..e1df563cdfe7e 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -570,7 +570,7 @@ config DEBUG_KMEMLEAK_EARLY_LOG_SIZE
int "Maximum kmemleak early log entries"
depends on DEBUG_KMEMLEAK
range 200 40000
- default 400
+ default 16000
help
Kmemleak must track all the memory allocations to avoid
reporting false positives. Since memory may be allocated or
--
2.20.1
prev parent reply other threads:[~2019-09-29 17:36 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-29 17:35 [PATCH AUTOSEL 4.14 01/23] clk: jz4740: Add TCU clock Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 02/23] MIPS: tlbex: Explicitly cast _PAGE_NO_EXEC to a boolean Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 03/23] i2c-cht-wc: Fix lockdep warning Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 04/23] mfd: intel-lpss: Remove D3cold delay Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 05/23] PCI: tegra: Fix OF node reference leak Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 06/23] livepatch: Nullify obj->mod in klp_module_coming()'s error path Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 07/23] ARM: 8898/1: mm: Don't treat faults reported from cache maintenance as writes Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 08/23] ARM: 8875/1: Kconfig: default to AEABI w/ Clang Sasha Levin
2019-09-29 18:08 ` Nathan Chancellor
2019-10-05 23:02 ` Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 09/23] MIPS: lantiq: update the clock alias' for the mainline PCIe PHY driver Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 10/23] firmware: bcm47xx_nvram: Correct size_t printf format Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 11/23] rtc: snvs: fix possible race condition Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 12/23] HID: apple: Fix stuck function keys when using FN Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 13/23] PCI: rockchip: Propagate errors for optional regulators Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 14/23] PCI: imx6: " Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 15/23] PCI: exynos: Propagate errors for optional PHYs Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 16/23] security: smack: Fix possible null-pointer dereferences in smack_socket_sock_rcv_skb() Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 17/23] ARM: 8903/1: ensure that usable memory in bank 0 starts from a PMD-aligned address Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 18/23] fat: work around race with userspace's read via blockdev while mounting Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 19/23] pktcdvd: remove warning on attempting to register non-passthrough dev Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 20/23] hypfs: Fix error number left in struct pointer member Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 21/23] kbuild: clean compressed initramfs image Sasha Levin
2019-09-29 17:35 ` [PATCH AUTOSEL 4.14 22/23] ocfs2: wait for recovering done after direct unlock request Sasha Levin
2019-09-29 17:35 ` Sasha Levin [this message]
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