>Number:         8931
>Category:       kern
>Synopsis:       softdep filesystem freeze
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people (Kernel Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Dec  1 04:24:00 1999
>Last-Modified:
>Originator:     
>Organization:
>Release:        -current ~Nov 25th
>Environment:
System: NetBSD/alpha 1.4P


>Description:

Well, I can only guess if this is actually a softdep problem, but I can't
think of any other explanation for it.

Today I was compiling ghostscript and started untarring a large tar file
containing a lot of small files. Suddenly everything froze. I could ping the
box just great, but nothing else worked. Jogging up to it revealed that
it hadn't panic()'d, and I could type random text at the login-prompt, but
I never got asked for the password.

After that I had a little fun with ddb, here's something hopefully useful:

idle()
mi_switch()
tsleep()
getnewbuf()
getblk()
bread()
ffs_blkatoff()
ufs_lookup()
lookup()
namei()
vn_open()
sys_open()
syscall()
XentSys()


>How-To-Repeat:

Dunno, banging some filesystem real hard for a while might trigger it. I
haven't managed to repeat it myself, but I will keep trying..

>Fix:

no idea, sorry


>Audit-Trail:
>Unformatted: