Subject: Re: kern/31990: esiop leaves b_resid non-zero
To: None <kern-bug-people@netbsd.org, gnats-admin@netbsd.org,>
From: Manuel Bouyer <bouyer@antioche.eu.org>
List: netbsd-bugs
Date: 11/03/2005 22:33:03
The following reply was made to PR kern/31990; it has been noted by GNATS.

From: Manuel Bouyer <bouyer@antioche.eu.org>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@NetBSD.org, gnats-admin@NetBSD.org,
	netbsd-bugs@NetBSD.org
Subject: Re: kern/31990: esiop leaves b_resid non-zero
Date: Thu, 3 Nov 2005 23:32:28 +0100

 On Thu, Nov 03, 2005 at 01:23:01PM +0000, yamt@mwd.biglobe.ne.jp wrote:
 > >Number:         31990
 > >Category:       kern
 > >Synopsis:       esiop leaves b_resid non-zero
 > >Confidential:   no
 > >Severity:       serious
 > >Priority:       low
 > >Responsible:    kern-bug-people
 > >State:          open
 > >Class:          sw-bug
 > >Submitter-Id:   net
 > >Arrival-Date:   Thu Nov 03 13:23:00 +0000 2005
 > >Originator:     YAMAMOTO Takashi <yamt@mwd.biglobe.ne.jp>
 > >Release:        NetBSD 3.99.11
 > >Organization:
 > 
 > >Environment:
 > System: NetBSD 3.99.11
 > Architecture: alpha
 > Machine: alpha
 > >Description:
 > 	the following is the first i/o request of
 > 	"dd if=/dev/rsd0c of=/dev/null", after biodone() is called on it.
 > 
 > 		db> sh buf 0xfffffc001dde6458
 > 		  vp 0x0 lblkno 0xdeadbeefdeadbeef blkno 0x0 dev 0x802
 > 		  error 0 flags 0x1c0210<BUSY,DONE,PHYS,RAW,READ>
 > 		  bufsize 0x200 bcount 0x200 resid 0x200
 > 		  data 0x120018000 saveaddr 0x0 dep 0x0
 > 		  iodone 0xfffffc0000480420
 > 
 > 	after putting some printf,
 > 	esiop_intr seems to call esiop_scsicmd_end with offset == 0.
 
 I don't see a problem here. Calling esiop_scsicmd_end with offset == 0 is
 valid, if the command didn't complete properly. Can you give more detail on
 what you see wrong here ? Does the kernel print some message ?
 
 -- 
 Manuel Bouyer <bouyer@antioche.eu.org>
      NetBSD: 26 ans d'experience feront toujours la difference
 --