lkml.org 
[lkml]   [2018]   [May]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: printk feature for syzbot?
On (04/26/18 12:06), Petr Mladek wrote:
>
> > Petr, Steven, Fengguang, what do you think? Do you have any objections?
> > Ideas?
>
> I wonder if we could create some mechanism that would help to extend
> struct printk_log easier in the future.

Hm, interesting idea.

> I know only about crash tool implementation. It uses information provided
> by log_buf_vmcoreinfo_setup(). The size of the structure is already
> public. Therefore crash should be able to find all existing information
> even if we increase the size of the structure.
>
> log_buf_vmcoreinfo_setup() even allows to inform about newly added
> structure items. We could probably extend it to inform also about
> the offset of the new optional elements.

I vaguely remember that the last time Thomas Gleixner modified
printk_log you managed to find a case that broke crash tool.
... Or may be I'm mistaken.

> I am not sure about other tools. But I think that it should be
> doable.

Good. So there are no objections, so far.

Tetsuo, Dmitry, care to send a patch?

-ss

\
 
 \ /
  Last update: 2018-05-10 06:23    [W:0.160 / U:0.264 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site