Date: Thu, 29 Sep 2005 14:49:07 +0100 From: Peter Edwards <peadar.edwards@gmail.com> To: Pawel Jakub Dawidek <pjd@freebsd.org> Cc: Peter Edwards <peadar@freebsd.org>, cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/kern vfs_bio.c Message-ID: <34cb7c84050929064918862231@mail.gmail.com> In-Reply-To: <20050929130338.GC1715@garage.freebsd.pl> References: <200509291037.j8TAbKdI010227@repoman.freebsd.org> <20050929130338.GC1715@garage.freebsd.pl>
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On 9/29/05, Pawel Jakub Dawidek <pjd@freebsd.org> wrote: > On Thu, Sep 29, 2005 at 10:37:20AM +0000, Peter Edwards wrote: > +> peadar 2005-09-29 10:37:20 UTC > +> > +> FreeBSD src repository > +> > +> Modified files: > +> sys/kern vfs_bio.c > +> Log: > +> Close a race in biodone(), whereby the bio_done field of the passed > +> bio may have been freed and reassigned by the wakeup before being > +> tested after releasing the bdonelock. > +> > +> There's a non-zero chance this is the cause of a few of the crashes > +> knocking around with biodone() sitting in the stack backtrace. > > Should this fix the panic on boot in vmware? > That one falls under the "non-zero chance" mentioned above :-) The problem was very intermittent for me, and wanting the laptop not to fall over seemed to be a prerequisite to reproducing the panic, so I can't positively say it's fixed the problem yet. If you have a reliable way of reproducing the panic, can you try out the patch and let me know?
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