Re: kern/56925: Amd64 server randomly panics

[BERTRAND Joël <joel.bertrand%systella.fr@localhost>]

The following reply was made to PR kern/56925; it has been noted by GNATS.

From: =?UTF-8?Q?BERTRAND_Jo=c3=abl?= <joel.bertrand%systella.fr@localhost>
To: gnats-bugs%netbsd.org@localhost, kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
        netbsd-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/56925: Amd64 server randomly panics
Date: Sat, 6 Aug 2022 09:32:17 +0200

 Michael van Elst a écrit :
 > The following reply was made to PR kern/56925; it has been noted by GNATS.
 > 
 > From: mlelstv%serpens.de@localhost (Michael van Elst)
 > To: gnats-bugs%netbsd.org@localhost
 > Cc: 
 > Subject: Re: kern/56925: Amd64 server randomly panics
 > Date: Fri, 15 Jul 2022 13:18:16 -0000 (UTC)
 > 
 >  riastradh%NetBSD.org@localhost (Taylor R Campbell) writes:
 >  
 >  > I see two problems in the ccb_timeout and wake_ccb logic:
 >  > 
 >  > 1. ccb_timeout is called from softint context, and calls wake_ccb,
 >  
 >  ccb_timeout_co is the callout function (i.e. softint context) that queues
 >  the ccb via ccb_tchain and signals the cleanup thread. The operation is
 >  protected by a mutex at IPL_BIO.
 >  
 >  ccb_timeout is then called later from the cleanup thread.
 
 	Hello,
 
 	Do you have some news about this PR ? This server has crashed twice
 last night (one panic and a deadlock that could be related). I can do
 some tests but I have no idea to fix this issue.
 
 	Best regards,
 
 	JB