From: "John David Anglin" <dave@hiauly1.hia.nrc.ca>
To: James.Bottomley@SteelEye.com (James Bottomley)
Cc: dave.anglin@nrc.ca, parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] Expect defunct, kill -9 panics kernel?
Date: Sun, 11 Feb 2007 15:59:37 -0500 (EST) [thread overview]
Message-ID: <200702112059.l1BKxboZ010491__35286.3322398209$1416624285$gmane$org@hiauly1.hia.nrc.ca> (raw)
In-Reply-To: <1171226106.3406.47.camel@mulgrave.il.steeleye.com> from "James Bottomley" at Feb 11, 2007 02:35:06 pm
> Right, now here's a bit of really useful detective work:
>
> In the same piece of disassembly can you see what happens to %r26 ...
> the first argument to __wake_up_common() which is the wait queue? It
> may be clobbered, but if it isn't by the time we fault we know that
> 0x45f10250 is the address of the wait queue. If we're incredibly lucky,
> it's a symbol in the vmlinux, can you see if it is (and if it's valid)?
In the code I'm looking at, r26 is copied to r7 near the beginning of
__wake_up_common(). r7 is 0 in the register dump. Of course, Carlos'
kernel may differ.
Dave
--
J. David Anglin dave.anglin@nrc-cnrc.gc.ca
National Research Council of Canada (613) 990-0752 (FAX: 952-6602)
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next parent reply other threads:[~2007-02-11 20:59 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1171226106.3406.47.camel@mulgrave.il.steeleye.com>
2007-02-11 20:59 ` John David Anglin [this message]
[not found] <200702101937.l1AJb7Uo014941@hiauly1.hia.nrc.ca>
2007-02-11 1:50 ` [parisc-linux] Expect defunct, kill -9 panics kernel? James Bottomley
[not found] ` <1171158607.3373.54.camel@mulgrave.il.steeleye.com>
[not found] ` <119aab440702110909r2018a297k98b4f1baed54821a@mail.gmail.com>
2007-02-11 17:17 ` John David Anglin
2007-02-11 19:19 ` James Bottomley
[not found] ` <1171221592.3406.32.camel@mulgrave.il.steeleye.com>
[not found] ` <119aab440702111221k19b2643em26ac943399274b9f@mail.gmail.com>
[not found] ` <119aab440702111222v3562f308v9808b4dea7b73d59@mail.gmail.com>
2007-02-11 20:35 ` James Bottomley
[not found] <119aab440702100916q504101b1xe99f65ff5945e712@mail.gmail.com>
2007-02-10 18:35 ` James Bottomley
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