From: Nicolas Boichat <[email protected]> [ 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/[email protected] Signed-off-by: Nicolas Boichat <[email protected]> Suggested-by: Dmitry Vyukov <[email protected]> Acked-by: Catalin Marinas <[email protected]> Acked-by: Dmitry Vyukov <[email protected]> Cc: Masahiro Yamada <[email protected]> Cc: Kees Cook <[email protected]> Cc: Petr Mladek <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Tetsuo Handa <[email protected]> Cc: Joe Lawrence <[email protected]> Cc: Uladzislau Rezki <[email protected]> Cc: Andy Shevchenko <[email protected]> Cc: Stephen Rothwell <[email protected]> Cc: Andrey Ryabinin <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> Signed-off-by: Sasha Levin <[email protected]> --- lib/Kconfig.debug | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 3dea52f7be9c1..46a910acce3f0 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
