From mboxrd@z Thu Jan  1 00:00:00 1970
From: mulyadi.santosa@gmail.com (Mulyadi Santosa)
Date: Fri, 3 Jun 2011 05:43:49 +0700
Subject: show_regs vs dump_stack in watchdog_timer_fn
In-Reply-To: <BANLkTimrqVwGdc8DRMVPki13O5XBoJmv8w@mail.gmail.com>
References: <BANLkTimrqVwGdc8DRMVPki13O5XBoJmv8w@mail.gmail.com>
Message-ID: <BANLkTimtxT-ErEtOTDnLUcTW3mdnv8wC6Q@mail.gmail.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

On Thu, Jun 2, 2011 at 21:15, Daniel Baluta <daniel.baluta@gmail.com> wrote:
> Hello,
>
> Why the stack isn't always dumped in watchdog_timer_fn ([1])?
>
> Registers content is useful, but without a stack trace it's very
> hard to find the task which caused system softlockup.

AFAIK, because there's no guarantee stack frame content can be trusted
as such time...i.e could be corrupted...

-- 
regards,

Mulyadi Santosa
Freelance Linux trainer and consultant

blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com