Comment 30 for bug 19828

Message-ID: <20050909052010.GG743@frodo>
Date: Fri, 9 Sep 2005 15:20:10 +1000
From: Nathan Scott <email address hidden>
To: Jonathan David Amery <email address hidden>, <email address hidden>
Subject: Re: Bug#312936: Programmes linked against libacl1 segfault in libacl1 code.

Hi there,

Revisiting this one, again. Firstly, since we've had no other
people reporting having hit this issue, I plan to downgrade this
=66rom a "critical" bug... I assume if it was happening to everyone
the arm port would be unusable, certainly that would be critical;
and we'd probably have made a bit of progress figuring it out by
now. :(

On Fri, Jun 10, 2005 at 11:36:18PM +0100, Jonathan David Amery wrote:
> ...
> I've just upgraded my system from woody to sarge. Among other upgrade=20
> problems I noticed that programmes like cp, mv and install were occasiona=
lly=20
> segfaulting (and the packages that were invoking them failing to get=20
> installed), leaving register dumps like this in my logs:
>=20
> pc : [<400278ac>] lr : [<4002a348>] Not tainted
> sp : bffff4f4 ip : 40049cf8 fp : bffff780
> r10: 400333bc r9 : bffffa38 r8 : bffff548
> r7 : bffff561 r6 : 00000000 r5 : 0001c324 r4 : bffff50c
> r3 : 00000004 r2 : 00000000 r1 : 00009d6b r0 : bffff508
> Flags: nzCv IRQs on FIQs on Mode USER_32 Segment user
> Control: 1C14917D Table: 1C14917D DAC: 00000015

So, its just dawned on me - you're saying these dumps are in
your system log? That would suggest this is a kernel panic,
or am I misunderstanding you there?

The above trace does look like it may be the start of a kernel
panic trace - was there anything else in the log? (eg. just
prior, or a stack trace following the above?). I'm not at all
familiar with how a kernel panic is reported on arm though.
On i386, however, a kernel panic will result in something like
the above being dumped (cpu register contents), followed by a
stack trace, and the userspace program will typically get a
SEGV (similar to what you described)... & the kernel struggles
on (basically, sounds exactly likely what you described).

cheers.

--=20
Nathan