#1043281 Aborts with "illegal hardware instruction" on i586 AMD Geode

Package:
sudo
Source:
sudo
Description:
Provide limited super user privileges to specific users
Submitter:
martin f krafft
Date:
2026-05-15 17:31:07 UTC
Severity:
normal
Tags:
#1043281#3
Date:
2023-08-08 12:09:50 UTC
From:
To:
I have two systems running the AMD Geode processor¹ and consequently
the non-PAE kernel:

```
Linux gig 5.10.0-23-686 #1 SMP Debian 5.10.179-2 (2023-07-14) i586 GNU/Linux
```
and
```
Linux emily 6.1.0-10-686 #1 SMP PREEMPT_DYNAMIC Debian 6.1.38-2 (2023-07-27) i586 GNU/Linux
```

Both have had the bookworm upgrade, but I've not rebooted the former
yet, hence the 5.x kernel.

Anywhow, I cannot use sudo on either anymore, because if I do:

```
emily:~% sudo -l
#(132 pts/0) 08 14:05:20.790
[1]    29199 illegal hardware instruction  sudo -l
```

which shows up in `dmesg` like so:

```
2023-08-08T14:06:32.666253+02:00 emily kernel: [206827.519200] traps: sudo[29332] trap invalid opcode ip:4ac030 sp:bfb3eedc error:0 in sudo[4ab000+2e000]
```

The system otherwise works fine, it's just `sudo` that's not usable.

¹) Here's the CPU data
```
emily:~% cat /proc/cpuinfo
processor	: 0
vendor_id	: AuthenticAMD
cpu family	: 5
model		: 10
model name	: Geode(TM) Integrated Processor by AMD PCS
stepping	: 2
cpu MHz		: 498.036
cache size	: 128 KB
physical id	: 0
siblings	: 1
core id		: 0
cpu cores	: 1
apicid		: 0
initial apicid	: 0
fdiv_bug	: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 1
wp		: yes
flags		: fpu de pse tsc msr cx8 sep pge cmov clflush mmx mmxext 3dnowext 3dnow cpuid 3dnowprefetch vmmcall
bugs		: sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass
bogomips	: 996.07
clflush size	: 32
cache_alignment	: 32
address sizes	: 32 bits physical, 32 bits virtual
power management:
```
#1043281#8
Date:
2023-08-08 12:57:51 UTC
From:
To:
Is this probably a duplicate of #1004894?

If so, this probably boils down on a GCC bug, see
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104713

Greetings
Marc
#1043281#13
Date:
2023-08-09 20:36:54 UTC
From:
To:
Regarding the following, written by "Marc Haber" on 2023-08-08 at 14:57 Uhr +0200:

Thanks and sorry for the duplicate. Not sure it is. I did a search,
but "opcode" only appeared on my radar later…
#1043281#18
Date:
2023-08-14 12:03:44 UTC
From:
To:
Hi,

What makes you unsure it is? Can you try recompiling for i586 or i386,
or disabling the hardening option as suggested in 1004894? If either
works, we have a duplicate and sudo sadly cannot do anything about
that.I'd rather not disable hardening for sudo to make it run on obscure
old CPUs until the ctte tells me to.

Greetings
Marc
#1043281#23
Date:
2023-08-15 11:29:33 UTC
From:
To:
Regarding the following, written by "Marc Haber" on 2023-08-14 at 14:03 Uhr +0200:

Lack of knowledge? It's not important what I am sure and unsure of
;)

I won't have time to recompile any time soon, and in part because I
won't be close to those systems in the foreseeable future. They are
not important (both are just IPMI jumphosts).

I agree that you shouldn't loosen security on sudo just for a few
older systems. It's probably time I replaced them anyway, where are
the raspberry pis with two LAN interfaces? ;)
#1043281#28
Date:
2023-08-15 12:11:53 UTC
From:
To:
Would you be willing to try a .deb delivered by me?

The APU just had its plug pulled as well.

Greetings
Marc
#1043281#33
Date:
2023-08-16 22:15:44 UTC
From:
To:
Regarding the following, written by "Marc Haber" on 2023-08-15 at 14:11 Uhr +0200:

Yes of course.
#1043281#38
Date:
2026-01-10 10:10:20 UTC
From:
To:
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Saephan. Bitte antworten Sie für weitere Informationen. Denken Sie daran,
Ihrer Familie und den Bedürftigen in Ihrer Umgebung Gutes zu tun.

Dies ist bereits der zweite Versuch, Sie zu erreichen. Bitte antworten Sie
für weitere Details.
#1043281#43
Date:
2026-03-28 10:44:18 UTC
From:
To:
A fix that may resolve your issues is now at least in bookworm and
trixie. Can you confirm this?

I am planning to close this bug by the end of May 2026 unless you
confirm that the issue still exists.

Greetings
Marc
#1043281#46
Date:
2026-03-28 10:44:18 UTC
From:
To:
A fix that may resolve your issues is now at least in bookworm and
trixie. Can you confirm this?

I am planning to close this bug by the end of May 2026 unless you
confirm that the issue still exists.

Greetings
Marc
#1043281#51
Date:
2026-04-02 16:47:20 UTC
From:
To:
Regarding the following, written by "Marc Haber" on 2026-03-28 at 11:44 Uhr +0100:

Yes, version 1.9.13p3-1+deb12u3 on bookworm does not have the problem
anymore. Wow. Thank you so much for following up on this, and for your
succinct message!

I'm herewith closing the bug, hope that's alright.
#1043281#56
Date:
2026-05-15 17:28:43 UTC
From:
To:
Control: tags -1 upstream confirmed
Control: found -1 1.9.17p2-1

The upstream fix is f1c82d8d434d5e7d9b50b4c79066f0f82eb981d0, not yet in
unstable and testing, but it looks like it will be in sudo 1.9.17p3 or
the next non-maintenance release. This bug will thus stay open until
that version has landed in unstable.

If upstream delays their release until the forky freeze approaches, I
will cherry-pick.

Greetings
Marc
#1043281#63
Date:
2026-05-15 17:28:43 UTC
From:
To:
Control: tags -1 upstream confirmed
Control: found -1 1.9.17p2-1

The upstream fix is f1c82d8d434d5e7d9b50b4c79066f0f82eb981d0, not yet in
unstable and testing, but it looks like it will be in sudo 1.9.17p3 or
the next non-maintenance release. This bug will thus stay open until
that version has landed in unstable.

If upstream delays their release until the forky freeze approaches, I
will cherry-pick.

Greetings
Marc