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authorMasahiro Yamada <masahiroy@kernel.org>2020-08-01 10:08:49 +0300
committerMasahiro Yamada <masahiroy@kernel.org>2020-08-01 14:54:39 +0300
commit4b20e103a63d056fb7a594b23d42ef8e0dbfc5ff (patch)
treeccf6f187f87caceeda477abc1df6b6c2fb66b9f6 /scripts/kconfig
parent97bebbcd8b9368212e08913461bb511e35b46627 (diff)
downloadlinux-4b20e103a63d056fb7a594b23d42ef8e0dbfc5ff.tar.xz
Revert "kconfig: qconf: don't show goback button on splitMode"
This reverts commit cc1c08edccaf5317d99a17a3231fe06381044e83. Maxim Levitsky reports 'make xconfig' crashes since that commit (https://lkml.org/lkml/2020/7/18/411) Or, the following is simple test code that makes it crash: menu "Menu" config FOO bool "foo" default y menuconfig BAR bool "bar" depends on FOO endmenu Select the Split View mode, and double-click "bar" in the right window, then you will see Segmentation fault. When 'last' is not set for symbolMode, the following code in ConfigList::updateList() calls firstChild(). item = last ? last->nextSibling() : firstChild(); However, the pointer returned by ConfigList::firstChild() does not seem to be compatible with (ConfigItem *), which seems another bug. I'd rather want to reconsider whether hiding the goback icon is the right thing to do. In the following test code, the Split View shows "Menu2" and "Menu3" in the right window. You can descend into "Menu3", but there is no way to ascend back to "Menu2" from "Menu3". menu "Menu1" config FOO bool "foo" default y menu "Menu2" depends on FOO menu "Menu3" config BAZ bool "baz" endmenu endmenu endmenu It is true that the goback button is currently not functional due to yet another bug, but hiding the problem is not the right way to go. Anyway, Segmentation fault is fatal. Revert the offending commit for now, and we should find the right solution. Reported-by: Maxim Levitsky <mlevitsk@redhat.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'scripts/kconfig')
-rw-r--r--scripts/kconfig/qconf.cc5
1 files changed, 2 insertions, 3 deletions
diff --git a/scripts/kconfig/qconf.cc b/scripts/kconfig/qconf.cc
index 86bc8ded8de8..762e2ac6679e 100644
--- a/scripts/kconfig/qconf.cc
+++ b/scripts/kconfig/qconf.cc
@@ -428,10 +428,9 @@ void ConfigList::updateList(ConfigItem* item)
if (rootEntry != &rootmenu && (mode == singleMode ||
(mode == symbolMode && rootEntry->parent != &rootmenu))) {
item = (ConfigItem *)topLevelItem(0);
- if (!item && mode != symbolMode) {
+ if (!item)
item = new ConfigItem(this, 0, true);
- last = item;
- }
+ last = item;
}
if ((mode == singleMode || (mode == symbolMode && !(rootEntry->flags & MENU_ROOT))) &&
rootEntry->sym && rootEntry->prompt) {