Date: Tue, 8 Sep 1998 19:24:09 +0000 From: dmaddox@scsn.net (Donald J. Maddox) To: current@FreeBSD.ORG Subject: Coredumping vmstat Message-ID: <19980908192409.A1858@scsn.net>
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Vmstat, iostat (and maybe others) are coredumping when compiled ELF
(others have reported that they work ok when aout)...
The problem in vmstat occurs at line 361:
for (i = 0; i < dk_ndrive && ndrives < 4; i++) {
if (dr_select[i])
continue;
for (cp = defdrives; *cp; cp++)
if (strcmp(dr_name[i], *cp) == 0) {
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
dr_select[i] = 1;
++ndrives;
break;
This code apparently expects *cp to be 0 at the end of the 'defdrives'
list, but instead it gets 0xffffffff, and this causes a bus error.
>From gdb:
.
.
.
364 break;
(gdb)
357 for (i = 0; i < dk_ndrive && ndrives < 4; i++) {
(gdb)
358 if (dr_select[i])
(gdb)
360 for (cp = defdrives; *cp; cp++)
(gdb)
361 if (strcmp(dr_name[i], *cp) == 0) {
(gdb)
360 for (cp = defdrives; *cp; cp++)
(gdb)
361 if (strcmp(dr_name[i], *cp) == 0) {
(gdb)
360 for (cp = defdrives; *cp; cp++)
(gdb) p *cp
$1 = 0x804a375 "wd1"
(gdb) s
361 if (strcmp(dr_name[i], *cp) == 0) {
(gdb)
360 for (cp = defdrives; *cp; cp++)
(gdb) p *cp
$2 = 0x804a371 "sd0"
(gdb) s
361 if (strcmp(dr_name[i], *cp) == 0) {
(gdb) p *cp
$3 = 0x804a36d "sd1"
(gdb) s
360 for (cp = defdrives; *cp; cp++)
(gdb) s
361 if (strcmp(dr_name[i], *cp) == 0) {
(gdb) p *cp
$4 = 0xffffffff <Error reading address 0xffffffff: Invalid argument>
(gdb)
.
.
.
Coredump on the next step...
Anybody have any idea what's going on here?
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