[lkml]   [2017]   [Oct]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Subject[PATCH 0/3] kconfig: Make 'm' safe before modules symbol is defined

This patchset fixes a segfault that occurs if 'm' appears in certain
expressions before the modules symbol is defined. The problem is that m is
rewritten to m && <modules symbol> already during parsing. Doing it in
menu_finalize(), which runs after parsing, fixes the problem.

To aid the review and people trying to understand menu_finalize() in the future
(including me), it also renames menu_check_dep() to rewrite_m() and adds
comments to clarify the existing expression rewriting and dependency
propagation logic.

The changes have been tested for regressions using zconfdump(), Kconfiglib, and


Ulf Magnusson (3):
kconfig: Rename menu_check_dep() to rewrite_m()
kconfig: Clarify expression rewriting
kconfig: Clean up modules handling and fix crash

scripts/kconfig/menu.c | 74 ++++++++++++++++++++++++++++++++++++++++++++------
1 file changed, 66 insertions(+), 8 deletions(-)


 \ /
  Last update: 2017-10-05 14:03    [W:0.032 / U:5.600 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site