Date: Fri, 6 Sep 2013 10:06:28 +0200 From: Jeremie Le Hen <jlh@FreeBSD.org> To: Olivier =?iso-8859-1?Q?Cochard-Labb=E9?= <olivier@cochard.me> Cc: freebsd-hackers@freebsd.org, Alexander Motin <mav@freebsd.org>, "freebsd-current@freebsd.org" <freebsd-current@freebsd.org>, freebsd-geom@freebsd.org Subject: Re: [RFC][CFT] GEOM direct dispatch and fine-grained CAM locking Message-ID: <20130906080627.GH43281@caravan.chchile.org> In-Reply-To: <CA%2Bq%2BTcrW%2B73JeUw9nxTcCdXTu578n25n_E_2Z9FDB1RGZ0_5cg@mail.gmail.com> References: <520D4ADB.50209@FreeBSD.org> <5224511D.4090503@FreeBSD.org> <20130903134251.GB43281@caravan.chchile.org> <CAKYr3zwjQ9K1c5smZXTESa3T5UnchYaipYQCS2OAJOUFyPBGww@mail.gmail.com> <CA%2Bq%2BTcoeHDbkCOXvBjbbzOKCbb7RLYqG0jn9bHNn_CZgLGarLg@mail.gmail.com> <5226DAB0.1060303@FreeBSD.org> <CA%2Bq%2BTcoKg-FuuKt_L9W8rGc_ZEv9XOteq=x6N%2BVT9_mUhRJDHQ@mail.gmail.com> <5228F9D4.3060008@FreeBSD.org> <CA%2Bq%2BTcrW%2B73JeUw9nxTcCdXTu578n25n_E_2Z9FDB1RGZ0_5cg@mail.gmail.com>
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On Fri, Sep 06, 2013 at 12:46:27AM +0200, Olivier Cochard-Labbé wrote: > On Thu, Sep 5, 2013 at 11:38 PM, Alexander Motin <mav@freebsd.org> wrote: > > I've found and fixed possible double request completion, that could cause > > such symptoms if happened. Updated patch located as usual: > > http://people.freebsd.org/~mav/camlock_patches/camlock_20130905.patch > > > > Good catch! > this new patch (applied to r255188) fix the problem on my laptop. With this new one I cannot boot any more (I also updated the source tree). This is a hand transcripted version: Trying to mount root from zfs:zroot/root []... panic: Batch flag already set cpuid = 1 KDB: stack backtrace: db_trace_self_wrapper() kdb_backtrace() vpanic() kassert_panic() xpt_batch_start() ata_interrupt() softclock_call_cc() softclock() ithread_loop() fork_exit() fork_trampoline() -- Jeremie Le Hen Scientists say the world is made up of Protons, Neutrons and Electrons. They forgot to mention Morons.
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