Re: kern/41797: kernel panic in kern_physio when tape reaches EOM during write if DIAGNOSTICS is enbled, without DIGNOSTICS error status is lost

[David Holland <dholland-bugs%netbsd.org@localhost>]

The following reply was made to PR kern/41797; it has been noted by GNATS.

From: David Holland <dholland-bugs%netbsd.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/41797: kernel panic in kern_physio when tape reaches EOM
        during write if DIAGNOSTICS is enbled, without DIGNOSTICS error
        status is lost
Date: Wed, 29 Jul 2009 19:13:33 +0000

 On Wed, Jul 29, 2009 at 05:45:00PM +0000, 
Wolfgang.Stukenbrock%nagler-company.com@localhost wrote:
  >     We have a VXA320 Tape connected to an adaptec 29160 controler
  >     at this system.  For debugging purpose we run a kernel with
  >     DIAGNOSTICS enabled.  "Sometimes" the systems panics with an
  >     asserstion in kern_phyio.c in line 201 "KASSERT((bp->b_flags &
  >     B_ERROR) == 0);".
 
 I swear I've seen this problem reported before, but there isn't an
 open PR that I can find for it, and it doesn't look to have been fixed
 either. Does anyone else remember this or am I confusing it with
 something else?
 
 Anyhow, also see 38643, which is connected. The I/O completion
 reporting for st seems to be thoroughly unsatisfactory. :-|
 
 -- 
 David A. Holland
 dholland%netbsd.org@localhost