Date: Sat, 17 Jan 2004 23:49:57 -0800 (PST) From: Katsuhisa ABE <katsuhisa.abe@nifty.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/61513: kernel gets into a panic to put invalid value in setsockopt Message-ID: <200401180749.i0I7nvVZ081244@www.freebsd.org> Resent-Message-ID: <200401180750.i0I7oCt8014678@freefall.freebsd.org>
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>Number: 61513
>Category: kern
>Synopsis: kernel gets into a panic to put invalid value in setsockopt
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sat Jan 17 23:50:12 PST 2004
>Closed-Date:
>Last-Modified:
>Originator: Katsuhisa ABE
>Release: 5.2-RELEASE
>Organization:
>Environment:
FreeBSD unzen 5.2-RELEASE FreeBSD 5.2-RELEASE #30: Mon Jan 12 13:46:54 JST 2004 root@unzen:/mnt1/usr/obj/usr/src/sys/UNZEN i386
>Description:
When I put unproper value (uninitialzed pointer) into the 4th argument, "optval" for setsockopt,
then kernel starts to reboot (not generate core).
>How-To-Repeat:
When I execute the following code as normal user.
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
int
main(int argc, char *argv[]) {
int sd;
int retval;
struct in6_pktinfo *pktinfo;
if ((sd = socket(PF_INET6, SOCK_STREAM, IPPROTO_TCP)) < 0 ) {
fprintf(stderr, "cannot create TCP socket\n");
exit(1);
}
if ((retval = setsockopt(sd, IPPROTO_IPV6, IPV6_PKTINFO,
pktinfo, sizeof(struct in6_pktinfo))) != 0) {
fprintf(stderr, "cannot set IPV6_PKTINFO\n");
exit(1);
}
}
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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