Re: kern/42455: tstile hang with nfs

["Christoph Egger" <Christoph_Egger%gmx.de@localhost>]

The following reply was made to PR kern/42455; it has been noted by GNATS.

From: "Christoph Egger" <Christoph_Egger%gmx.de@localhost>
To: gnats-bugs%NetBSD.org@localhost, netbsd-bugs%netbsd.org@localhost, 
gnats-admin%netbsd.org@localhost,
 kern-bug-people%netbsd.org@localhost, ad%netbsd.org@localhost
Cc: 
Subject: Re: kern/42455: tstile hang with nfs
Date: Wed, 05 May 2010 16:35:27 +0200

 Some information about the nfsmblk process:
 
 db> tr /a ffffa000260cdc00
 trace: pid 0 lid 47 at 0xffffa00026110980
 sleepq_block() at netbsd:sleepq_block+0xbf
 cv_wait() at netbsd:cv_wait+0x106
 nfs_writerpc() at netbsd:nfs_writerpc+0xda1
 nfs_doio() at netbsd:nfs_doio+0x4c2
 nfssvc_iod() at netbsd:nfssvc_iod+0x17b
 
 db> ps /w
 PID   LID          COMMAND     EMUL  PRI WAIT-MSG    WAIT-CHANNEL
 0      47           system   netbsd   96 nfsmblk      ffffa00026110a88
 
 db> show lock ffffa00026110a88
 lock address : 0xffffa00026110a88 type     :               spin
 initialized  : 0xffffffff804da720 interlock: 0xffffa00026110a80
 
 db> show lock 0xffffa00026110a80
 lock address : 0xffffa00026110a80 type     :               spin
 initialized  : 0xffffffff804da709
 shared holds :                  0 exclusive:                  0
 shares wanted:                  0 exclusive:                  0
 current cpu  :                  0 last held:                  0
 current lwp  : 0xffffa0002320ec00 last held: 000000000000000000
 last locked  : 0xffffffff804db406 unlocked : 0xffffffff803eeae7
 owner field  : 0x0000000000000600 wait/spin:                0/1
 
 'last locked' points to sys/nfs/nfs_vnops.c:1468
 'unlocked' points to sys/kern/kern_condvar.c:154