Date: Sun, 13 Jun 2004 07:41:39 -0700 (PDT) From: David Wolfskill <david@catwhisker.org> To: stable@freebsd.org Subject: ld-elf.so.1: assert failed: /usr/src/libexec/rtld-elf/i386/reloc.c:232 Message-ID: <200406131441.i5DEfdfg000712@bunrab.catwhisker.org>
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This doesn't look good....
Every couple of weeks, I upgrade my two "production" machines here
at home to a freshly-built -STABLE -- after having tracked -STABLE
daily, both on my laptop and on the "build" machine (neither of
which is one of the "production" ones).
For over 2.5 years, this has worked well.
Today, I had no problem with one of them (internal mail; externally-
visible Web server), but the firewall box behaved oddly, and on reboot,
displayed the message in the Subject when I logged in:
ld-elf.so.1: assert failed: /usr/src/libexec/rtld-elf/i386/reloc.c:232
Looking at the code in question has not helped illuminate the situation:
221 /* Process the PLT relocations. */
222 int
223 reloc_plt(Obj_Entry *obj)
224 {
225 const Elf_Rel *rellim;
226 const Elf_Rel *rel;
227
228 rellim = (const Elf_Rel *)((char *)obj->pltrel + obj->pltrelsize);
229 for (rel = obj->pltrel; rel < rellim; rel++) {
230 Elf_Addr *where;
231
232 assert(ELF_R_TYPE(rel->r_info) == R_386_JMP_SLOT);
233
234 /* Relocate the GOT slot pointing into the PLT. */
235 where = (Elf_Addr *)(obj->relocbase + rel->r_offset);
236 *where += (Elf_Addr)obj->relocbase;
237 }
238 return 0;
239 }
(That's a cut/paste from src/libexec/rtld-elf/i386/reloc.c 1.6.2.2, dated
2002/06/16 20:02:09 dillon.)
Now, the machine runs headless -- always has, since I set it up.
The saving grace is that I flip between bootable slices; gong back
to slice 1 and logging in, I see:
|d146(4.10-S)[1] _ssh admin@janus
|Last login: Sun Jun 13 06:54:27 2004 from d146.catwhisker
|Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994
| The Regents of the University of California. All rights reserved.
|
|FreeBSD 4.10-STABLE (JANUS) #68: Sun May 30 05:38:48 PDT 2004
|
|Welcome to FreeBSD!
|
|Before seeking technical support, please use the following resources:
|
|o Security advisories and updated errata information for all releases are
| at http://www.FreeBSD.org/releases/ - always consult the ERRATA section
| for your release first as it's updated frequently.
|
|o The Handbook and FAQ documents are at http://www.FreeBSD.org/ and,
| along with the mailing lists, can be searched by going to
| http://www.FreeBSD.org/search/. If the doc distribution has
| been installed, they're also available formatted in /usr/share/doc.
|
|If you still have a question or problem, please take the output of
|`uname -a', along with any relevant error messages, and email it
|as a question to the questions@FreeBSD.org mailing list. If you are
|unfamiliar with FreeBSD's directory layout, please refer to the hier(7)
|man page. If you are not familiar with man pages, type `man man'.
|
|You may also use /stand/sysinstall to re-enter the installation and
|configuration utility. Edit /etc/motd to change this login announcement.
|
|janus(4.10-S)[1]
|
|
If I boot from the newly-built-and-installed kernel & world, I see:
|d146(4.10-S)[1] _ssh admin@janus
|Last login: Sun Jun 13 06:51:46 2004 from d146.catwhisker
|Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994
| The Regents of the University of California. All rights reserved.
|
|FreeBSD 4.10-STABLE (JANUS) #69: Sun Jun 13 06:04:04 PDT 2004
|ld-elf.so.1: assert failed: /usr/src/libexec/rtld-elf/i386/reloc.c:232
|janus(4.10-S)[1]
|
I have placed a copy of the kernel config at
http://www.catwhisker.org/~david/FreeBSD/debug/JANUS, in case that
may prove of interest. It was last updated 02 Nov 2002.
One possibly-salient bit of information is that the CPUs aren't all
the same type. (Thus, I avoid CPU-specific optimizations -- at least,
that is my intent!) What I have:
* Build machine: 2x876 MHz PIII (SMP)
CPU: Intel Pentium III (876.40-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x68a Stepping = 10
Features=0x383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
* Web server: 400 MHz AMD-K6 (UP)
CPU: AMD-K6(tm) 3D processor (400.91-MHz 586-class CPU)
Origin = "AuthenticAMD" Id = 0x58c Stepping = 12
Features=0x8021bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,PGE,MMX>
AMD Features=0x80000800<SYSCALL,3DNow!>
* Firewall: 150 MHz P54C (UP)
CPU: Pentium/P54C (149.69-MHz 586-class CPU)
Origin = "GenuineIntel" Id = 0x52c Stepping = 12
Features=0x1bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8>
I admit that the firewall box isn't super-fast, but it's generally adequate
for a WAN link (as well as some additional duties. such as NAT).
The general approach is on the build machine:
* do the usual build world, build/install the kernel, mergemaster -p,
install world, mergemaster, reboot. Reality check, "portupgrade -p".
Assuming that all went OK:
* On each of the 2 production machines:
- mount the build machine's /usr/src and /usr/obj read-only on the
target boxen; install kernel; mergemaster -p; install world;
mergemaster; reboot. Reality check. If OK, "portupgrade -P" (using
packages built on build machine when possible).
This morning, that last "mergemaster" run on the firewall box got
an "Illegal instruction" attempting to issue "chflags -R noschg
/var/tmp/temprooot" -- or so I infer because when I saw the "Illegal
instruction" message (followed by whines about the directory not
being empty), I tried issuing that command manually, and was
"rewarded" with a recurrence of the message (and an ineffective
command invocation).
The Web server appears to be OK:
bunrab(4.10-S)[8] uname -a
FreeBSD bunrab.catwhisker.org 4.10-STABLE FreeBSD 4.10-STABLE #69: Sun Jun 13 06:04:08 PDT 2004 root@freebeast.catwhisker.org:/common/S1/obj/usr/src/sys/BUNRAB i386
bunrab(4.10-S)[9]
And falling back to the previous kernel & world on the firewall seems OK:
janus(4.10-S)[2] uname -a
FreeBSD janus.catwhisker.org 4.10-STABLE FreeBSD 4.10-STABLE #68: Sun May 30 05:38:48 PDT 2004 root@freebeast.catwhisker.org:/common/S1/obj/usr/src/sys/JANUS i386
janus(4.10-S)[3]
Any hints, clues, thoughts, or suggestions?
Thanks,
david
--
David H. Wolfskill david@catwhisker.org
I do not "unsubscribe" from email "services" to which I have not explicitly
subscribed. Rather, I block spammers' access to SMTP servers I control,
and encourage others who are in a position to do so to do likewise.
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