Mercurial > hg > nginx
view auto/include @ 7536:c3f60d618c17
Core: fixed segfault with too large bucket sizes (ticket #1806).
To save memory hash code uses u_short to store resulting bucket sizes,
so maximum bucket size is limited to 65536 minus ngx_cacheline_size (larger
values will be aligned to 65536 which will overflow u_short). However,
there were no checks to enforce this, and using larger bucket sizes
resulted in overflows and segmentation faults.
Appropriate safety checks to enforce this added to ngx_hash_init().
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Thu, 18 Jul 2019 18:27:44 +0300 |
parents | a616bdc38645 |
children |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. echo $ngx_n "checking for $ngx_include ...$ngx_c" cat << END >> $NGX_AUTOCONF_ERR ---------------------------------------- checking for $ngx_include END ngx_found=no cat << END > $NGX_AUTOTEST.c $NGX_INCLUDE_SYS_PARAM_H #include <$ngx_include> int main(void) { return 0; } END ngx_test="$CC -o $NGX_AUTOTEST $NGX_AUTOTEST.c" eval "$ngx_test >> $NGX_AUTOCONF_ERR 2>&1" if [ -x $NGX_AUTOTEST ]; then ngx_found=yes echo " found" ngx_name=`echo $ngx_include \ | tr abcdefghijklmnopqrstuvwxyz/. ABCDEFGHIJKLMNOPQRSTUVWXYZ__` have=NGX_HAVE_$ngx_name . auto/have_headers eval "NGX_INCLUDE_$ngx_name='#include <$ngx_include>'" else echo " not found" echo "----------" >> $NGX_AUTOCONF_ERR cat $NGX_AUTOTEST.c >> $NGX_AUTOCONF_ERR echo "----------" >> $NGX_AUTOCONF_ERR echo $ngx_test >> $NGX_AUTOCONF_ERR echo "----------" >> $NGX_AUTOCONF_ERR fi rm -rf $NGX_AUTOTEST*