Date: Wed, 19 Aug 1998 15:03:40 +0200 (CEST) From: Søren Schmidt <sos@FreeBSD.ORG> To: regnauld@deepo.prosa.dk (Philippe Regnauld) Cc: croot@btp1da.phy.uni-bayreuth.de, current@FreeBSD.ORG, smp@FreeBSD.ORG Subject: Re: softupdates and smp crash Message-ID: <199808191303.PAA10187@sos.freebsd.dk> In-Reply-To: <19980818161335.30289@deepo.prosa.dk> from Philippe Regnauld at "Aug 18, 98 04:13:35 pm"
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In reply to Philippe Regnauld who wrote:
> #0 boot (howto=260) at ../../kern/kern_shutdown.c:286
> #1 0xf01151c1 in panic (fmt=0xf01ab861 "softdep_lock: locking against myself")
> at ../../kern/kern_shutdown.c:429
> #2 0xf01ab8c9 in acquire_lock (lk=0xf02265ac)
> at ../../ufs/ffs/ffs_softdep.c:263
> +-> #3 0xf01aee54 in initiate_write_filepage (pagedep=0xf0c49e00, bp=0xf35300b0)
> | at ../../ufs/ffs/ffs_softdep.c:2745
> | #4 0xf01aecbf in softdep_disk_io_initiation (bp=0xf35300b0)
> |
> I crashed here.
I tried it on my play-smp machine it panics also...
We can still say for sure that softupdates are NOT SMP safe...
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Søren Schmidt (sos@FreeBSD.org) FreeBSD Core Team
Even more code to hack -- will it ever end?
..
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