Subject: kern/32532: softdep_trackbufs deadlock
To: None <,,>
From: None <>
List: netbsd-bugs
Date: 01/15/2006 10:40:01
>Number:         32532
>Category:       kern
>Synopsis:       softdep_trackbufs deadlock
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jan 15 10:40:01 +0000 2006
>Originator:     YAMAMOTO Takashi <>
>Release:        NetBSD 3.99.15

System: NetBSD kaeru 3.99.15 NetBSD 3.99.15 (build.kaeru.xen.nodebug) #: Wed Jan 11 23:14:36 JST 2006 takashi@kaeru:/home/takashi/work/kernel/build.kaeru.xen.nodebug i386
Architecture: i386
Machine: i386
	setup_allocindir_phase2 can be called with the vnode locked and
	calls softdep_trackbufs with throttle==TRUE.
	if all "locked" buffers are held by the vnode, no one will flush them
	and it stucks.
	code inspection.  create a large sparse file, maybe?