Date: Thu, 20 Jan 2000 09:47:55 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: Jason Evans <jasone@canonware.com> Cc: Alfred Perlstein <bright@wintelcom.net>, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sys/kern vfs_aio.c Message-ID: <200001201747.JAA52347@apollo.backplane.com> References: <20000119210539.F20191@fw.wintelcom.net> <Pine.BSF.4.21.0001201741580.2347-100000@alphplex.bde.org> <20000119225846.W27689@sturm.canonware.com> <20000119233702.E20751@fw.wintelcom.net> <20000119233311.X27689@sturm.canonware.com>
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:> > and actually write some test code to try to produce a problem with/without
:> > the change.
:>
:> Can you post the issue he brought up that needed the spl lifted?
:
:No. It was in an xchat (IRC) buffer that crashed. =( I think he was seeing
:permanently blocked processes.
:
:Jason
This is the easiest type of bug to diagnose since it tends to allow you
to attach a gdb to the kernel (gdb -k kernel.debug /dev/mem) and backtrace
the stuck processes (proc NNN; back) in real time.
Without knowing more about the blockages -- for example, what the wait
message was -- I can't help locate and fix the problem. I can assure you,
however, that the spl*() changes you made will break things even worse
then they may already be broken.
-Matt
Matthew Dillon
<dillon@backplane.com>
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