Re: lib/42093: rump rename race testcase crashes

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

The following reply was made to PR lib/42093; it has been noted by GNATS.

From: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: lib-bug-people%NetBSD.org@localhost, gnats-admin%NetBSD.org@localhost, 
netbsd-bugs%NetBSD.org@localhost
Subject: Re: lib/42093: rump rename race testcase crashes
Date: Sat, 19 Sep 2009 23:17:36 +0200

 On Sat, Sep 19, 2009 at 09:20:01AM +0000, njoly%pasteur.fr@localhost wrote:
 > System: NetBSD lanfeust.sis.pasteur.fr 5.99.18 NetBSD 5.99.18 (LANFEUST) #0: 
 > Sat Sep 19 01:00:25 CEST 2009 
 > njoly%lanfeust.sis.pasteur.fr@localhost:/local/src/NetBSD/obj.amd64/sys/arch/amd64/compile/LANFEUST
 >  amd64
 > Architecture: x86_64
 > Machine: amd64
 > >Description:
 > Noticed that ffs/t_renamerace ATF testcase sometimes crash. Trying to debug 
 > it,
 > i made the following rump small code which do crash too.
 > 
 > The crashes do only appear when logging is enabled (MNT_LOG), and are not so 
 > uncommom.
 > On 10 runs; i get 6 success, 3 crashes with `Resource deadlock avoided' and 1
 > with `segmentation fault'.
 
 Could it be related to kern/41417, which have been investigated to be
 a deadlock in WAPBL's copy of rename ?
 
 -- 
 Manuel Bouyer <bouyer%antioche.eu.org@localhost>
      NetBSD: 26 ans d'experience feront toujours la difference
 --