[DRBD-user] "syncer" crash when doing full resync

Kohari, Moiz mkohari at enterasys.com
Wed Sep 22 23:26:18 CEST 2004


Folks,

 

I am seeing a drbdd oops almost exact in nature to the one below, certainly looks like memory corruption.  It is happening in the same spot (drbd_end_req()).

 

Because this is happening somewhat consistently within the drbd subsystem and no where else, I wonder if the corruption is coming from within drbd?  Was this issue ever resolved?

 

I am using drbd version 0.6.12, has anyone seen this problem with newer versions of drbd?

 

Regards!

 

From: Philipp Reisner <philipp.reisner at ... <http://gmane.org/get-address.php?address=philipp.reisner%2d63ez5xqkn6DQT0dZR%2bAlfA%40public.gmane.org> >
Subject: Re: [DRBD-user] "syncer" crash when doing full resync <http://news.gmane.org/find-root.php?message_id=%3c200407021711.42767.philipp.reisner%40linbit.com%3e> 
Newsgroups: gmane.comp.linux.drbd <http://news.gmane.org/gmane.comp.linux.drbd> 
Date: Fri, 02 Jul 2004 17:11:42 +0200

[...OOPS deleted...]
> ohwell :(
 
After finding time to analyze this problem it is clear that the 
peer sent an invalid response-cookie, which caused this node to crash.
 
We understand what happened there:
 
drbdd
 -> receive_block_ack
     -> drbd_end_req
         -> struct Drbd_Conf* mdev = drbd_conf + MINOR(req->bh->b_rdev);
                                                    ^^^^^^^^^^
The crash happens while dereferencing req->bh
 
The register holding req (%esi) has 0xffffffff .
 
This req comes from the peer, it got it with the request to write a block.
 
Either your peer is corrupting its memory (more probabely), or 
the node, on which the OOPS happened is corrupting its memory (less
probabel)
 
Please go and get new hardware.
 
[In case memtest86 does not find anything, it could be that the 
 IO operation to disk does the memory corruption...]
 
-philipp
-- 
: Dipl-Ing Philipp Reisner                      Tel +43-1-8178292-50 :
: LINBIT Information Technologies GmbH          Fax +43-1-8178292-82 :
: Schönbrunnerstr 244, 1120 Vienna, Austria    http://www.linbit.com :

 

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