Date: Tue, 4 Sep 2001 04:59:22 -0700 (PDT) From: Mike Potanin <potanin@mccme.ru> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/30306: Memory leak in __getcwd Message-ID: <200109041159.f84BxMD67053@freefall.freebsd.org>
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>Number: 30306
>Category: kern
>Synopsis: Memory leak in __getcwd
>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: Tue Sep 04 05:00:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator: Mike Potanin
>Release: 4.3-RELEASE
>Organization:
asplinux
>Environment:
FreeBSD pm.asplinux.ru 4.3-RELEASE FreeBSD 4.3-RELEASE #40: Mon Sep 3 19:40:01 MSD 2001 root@pm.asplinux.ru:/usr/src/sys/compile/PM i386
>Description:
>How-To-Repeat:
mount ... /mnt
mkdir /mnt/test
cd /mnt/test
umount -f /mnt
/bin/pwd # Many times :-)
>Fix:
"kern/vfs_cache.c" line 540
buf = bp = malloc(uap->buflen, M_TEMP, M_WAITOK);
bp += uap->buflen - 1;
*bp = '\0';
fdp = p->p_fd;
slash_prefixed = 0;
for (vp = fdp->fd_cdir; vp != fdp->fd_rdir && vp != rootvnode;) {
if (vp->v_flag & VROOT) {
- if (vp->v_mount == NULL) { /* forced unmount */
- free(buf, M_TEMP);
+ if (vp->v_mount == NULL) /* forced unmount */
return (EBADF);
- }
vp = vp->v_mount->mnt_vnodecovered;
continue;
}
if (vp->v_dd->v_id != vp->v_ddid) {
numcwdfail1++;
free(buf, M_TEMP);
return (ENOTDIR);
}
>Release-Note:
>Audit-Trail:
>Unformatted:
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