Date: Sat, 12 Oct 2002 15:51:15 -0700 From: Kris Kennaway <kris@obsecurity.org> To: jwe@che.utexas.edu Cc: current@FreeBSD.org Subject: man dumps core if no manpath.config directories exist Message-ID: <20021012225115.GA96279@xor.obsecurity.org>
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#0 0x0804c7fb in get_manpath (perrs=0, path=0x800 <Address 0x800 out of bounds>)
at /usr/src/gnu/usr.bin/man/manpath/manpath.c:500
#1 0x0804bf30 in manpath (perrs=0)
at /usr/src/gnu/usr.bin/man/manpath/manpath.c:195
#2 0x08049a2b in man_getopt (argc=0, argv=0x0)
at /usr/src/gnu/usr.bin/man/man/man.c:479
#3 0x080491fe in main (argc=1, argv=0xbfbff78c)
at /usr/src/gnu/usr.bin/man/man/man.c:153
#4 0x080490dc in _start (ap=0xbfbff888 "man")
at /usr/src/lib/csu/i386-elf/crt1.c:126
(gdb) frame 0
#0 0x0804c7fb in get_manpath (perrs=0, path=0x800 <Address 0x800 out of bounds>)
at /usr/src/gnu/usr.bin/man/manpath/manpath.c:500
500 *manpathlist = '\0';
(gdb) print len
$1 = 0
It's pretty clear what's going on..none of the directories in
/etc/manpath.config exist, so len=0, so malloc(0) "succeeds" and does
nothing, leaving manpathlist a null pointer.
This situation can occur if e.g. you install the 'base' freebsd
distribution into a jail, without installing any of the manpages. In
this situation none of the manpage directories are created either.
Kris
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