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Message-Id: <1507482683-22651-6-git-send-email-ulfalizer@gmail.com>
Date: Sun, 8 Oct 2017 19:11:22 +0200
From: Ulf Magnusson <ulfalizer@...il.com>
To: yann.morin.1998@...e.fr, linux-kbuild@...r.kernel.org
Cc: sam@...nborg.org, zippel@...ux-m68k.org, nicolas.pitre@...aro.org,
michal.lkml@...kovi.net, dirk@...ders.net,
yamada.masahiro@...ionext.com, lacombar@...il.com,
walch.martin@....de, JBeulich@...e.com,
linux-kernel@...r.kernel.org, Ulf Magnusson <ulfalizer@...il.com>
Subject: [PATCH 5/6] kconfig: Don't leak help strings during parsing
This is just for completeness to get rid of the last memory leak
currently generated during parsing for ARCH=x86. The symbol
DVB_NETUP_UNIDVB in drivers/media/pci/netup_unidvb/Kconfig currently has
two help strings, and we leak the first one.
Summary from Valgrind on 'menuconfig' (ARCH=x86) before the fix:
LEAK SUMMARY:
definitely lost: 344,440 bytes in 14,350 blocks
...
Summary after the fix:
LEAK SUMMARY:
definitely lost: 344,376 bytes in 14,349 blocks
...
Signed-off-by: Ulf Magnusson <ulfalizer@...il.com>
---
scripts/kconfig/zconf.y | 3 +++
1 file changed, 3 insertions(+)
diff --git a/scripts/kconfig/zconf.y b/scripts/kconfig/zconf.y
index 468ab03..3c9f436 100644
--- a/scripts/kconfig/zconf.y
+++ b/scripts/kconfig/zconf.y
@@ -435,6 +435,9 @@ help_start: T_HELP T_EOL
help: help_start T_HELPTEXT
{
+ if (current_entry->help)
+ /* Weird menu node with two help strings */
+ free(current_entry->help);
current_entry->help = $2;
};
--
2.7.4
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