lkml.org 
[lkml]   [2013]   [Mar]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: Bug involving dynamic_debug and '-p' modifier
From
On Tue, Mar 12, 2013 at 9:14 AM, Andrew Cooks <acooks@gmail.com> wrote:
> Hi Jason
>
> When I specify a '-p' modifier in the dynamic debug options in the
> kernel command line, I get a kernel panic during boot. The panic
> happens after userspace starts doing graphical stuff, but I haven't
> been able to pinpoint exactly what.
>
> If I use '=_' instead of '-p', or boot to a recovery mode, or change
> the modifier after booting using debugfs, the panic doesn't occur. For
> example, booting to runlevel 3 with '=_', then flipping the same
> modifier to first to '+p' and then to '-p', before starting X does not
> result in a panic.
>
> Booting to runlevel 3 (or even 1!), with '-p' results in a panic, but
> 'rdshell' is OK.
>
> I also tried the Red Hat kernel (just because it's installed - I
> haven't figured out how to tell the package manager that I don't want
> a kernel). This also panics, but it says that '-p' is not supported.
>
> Please let me know if you need me to do any other tests.
>
> '-p', panic: http://pastebin.com/8yAcBQdY
> '-p', rdshell, no panic: http://pastebin.com/Hi2a7BZA
>
> --
> a.

Jason's mail bounced, so redirecting to Jim Cromie, who made the most
recent significant changes to dynamic_debug...


\
 
 \ /
  Last update: 2013-03-12 04:01    [W:0.078 / U:0.324 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site