pw is broken?
KT Sin
ktsin at acm.org
Sat Mar 9 05:43:59 UTC 2013
pw is crashing with seg fault due to this change?
http://svnweb.freebsd.org/base/head/lib/libutil/gr_util.c?r1=245390&r2=247919
# gdb ./pw
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(gdb) run groupadd test123 -g 12345
Starting program: /usr/src/usr.sbin/pw/pw groupadd test123 -g 12345
Program received signal SIGSEGV, Segmentation fault.
0x0000000080d84a4f in stpcpy () from /lib/libc.so.7
(gdb) bt full
#0 0x0000000080d84a4f in stpcpy () from /lib/libc.so.7
No symbol table info available.
#1 0x0000000080a5c00a in grcopy (gr=0x612ce0, newgr=0x81409100, name=0x0,
ndx=0) at /usr/src/lib/libutil/gr_util.c:496
dst = 0x8 <Error reading address 0x8: Bad address>
i = 1090277153
#2 0x0000000080a5bdc6 in gr_add (gr=0x612ce0, newmember=0x0)
at /usr/src/lib/libutil/gr_util.c:451
newgr = (struct group *) 0x81409100
len = 0
num_mem = 0
#3 0x0000000080a5bd4f in gr_dup (gr=0x612ce0)
at /usr/src/lib/libutil/gr_util.c:434
No locals.
#4 0x000000000040bad7 in gr_update (grp=0x612ce0, group=0x0) at grupd.c:78
pfd = 0
tfd = 4244492
gr = (struct group *) 0x0
old_gr = (struct group *) 0x0
#5 0x000000000040ba8f in addgrent (grp=0x612ce0) at grupd.c:111
No locals.
#6 0x000000000040a83d in pw_group (cnf=0x612bf0, mode=0, args=0x613e78)
at pw_group.c:258
---Type <return> to continue, or q <return> to quit---
grp = (struct group *) 0x612ce0
members = (char **) 0x81485d00
rc = 0
a_name = (struct carg *) 0x8144c0a0
a_gid = (struct carg *) 0x8144c0c0
arg = (struct carg *) 0x0
grmembers = 200
fakegroup = {gr_name = 0x7fffffffdcb9 "test123",
gr_passwd = 0x40fbc9 "*", gr_gid = 12345, gr_mem = 0x81485d00}
#7 0x00000000004037fb in main (argc=3, argv=0x7fffffffd9f0) at pw.c:230
which = 1
config = 0x0
cnf = (struct userconf *) 0x612bf0
ch = -1
mode = 0
opts = {{0x40e150 "V:C:qn:u:c:d:e:p:g:G:mM:k:s:oL:i:w:h:H:Db:NPy:Y",
0x40e180 "V:C:qn:u:rY",
0x40e18c "V:C:qn:u:c:d:e:p:g:G:mM:l:k:s:w:L:h:H:FNPY",
0x40e1b7 "V:C:qn:u:FPa7", 0x40e1c5 "V:C:q", 0x40e1c5 "V:C:q",
0x40e1c5 "V:C:q"}, {0x40e1cb "V:C:qn:g:h:H:M:opNPY",
0x40e1e0 "V:C:qn:g:Y", 0x40e1eb "V:C:qn:d:g:l:h:H:FM:m:NPY",
0x40e205 "V:C:qn:g:FPa", 0x40e1c5 "V:C:q", 0x0, 0x0}}
funcs = {0x405270 <pw_user>, 0x409b60 <pw_group>}
(gdb)
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