Date: Fri, 11 Oct 1996 06:41:32 -0700 (PDT) From: chou@mpd.tandem.com To: freebsd-gnats-submit@freebsd.org Subject: bin/1773: A NULL pointer causing segmentation core dumped. Message-ID: <199610111341.GAA15852@freefall.freebsd.org> Resent-Message-ID: <199610111350.GAA16194@freefall.freebsd.org>
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>Number: 1773
>Category: bin
>Synopsis: A NULL pointer causing segmentation core dumped.
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri Oct 11 06:50:01 PDT 1996
>Last-Modified:
>Originator: Gary Chou
>Organization:
Tandem Computers Inc
>Release: 2.1.5
>Environment:
FreeBSD osipc.isd.tandem.com 2.1.5-RELEASE FreeBSD 2.1.5-RELEASE #0: Wed Jul 17 03:09:31 1996 jkh@whisker.cdrom.com:/usr/src/sys/compile/GENERIC i386
>Description:
Line 1065 in function default_server_hostnames(), the gethostbyname() will
return NULL if the "ServerName" has incorrect value in the httpd.conf.
Line 1071 will core dumped dur to the NULL pointer of "main".
>How-To-Repeat:
Give a non-existing domain name of ServerName in httpd.conf.
>Fix:
Add checking against NULL after "gethostbyname()" as following
suggested code:
if (!main) {
fprintf(stderr, "httpd: Host name(%s) lookup failure.\n", def_hostname);
exit(1);
}
>Audit-Trail:
>Unformatted:
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