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Subject: Re: bug in tag handling in blk-mq?
To:     Mike Galbraith <efault@gmx.de>,
        Paolo Valente <paolo.valente@linaro.org>
Cc:     Christoph Hellwig <hch@lst.de>,
        linux-block <linux-block@vger.kernel.org>,
        Ulf Hansson <ulf.hansson@linaro.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Linus Walleij <linus.walleij@linaro.org>,
        Oleksandr Natalenko <oleksandr@natalenko.name>
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 <1525755090.24338.1.camel@gmx.de> <1525768632.5208.4.camel@gmx.de>
From:   Jens Axboe <axboe@kernel.dk>
Message-ID: <ffd0c030-43f8-0dbe-42b3-03bb9c410bea@kernel.dk>
Date:   Tue, 8 May 2018 08:55:43 -0600
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On 5/8/18 2:37 AM, Mike Galbraith wrote:
> On Tue, 2018-05-08 at 06:51 +0200, Mike Galbraith wrote:
>>
>> I'm deadlined ATM, but will get to it.
> 
> (Bah, even a zombie can type ccache -C; make -j8 and stare...)
> 
> kbuild again hung on the first go (yay), and post hang data written to
> sdd1 survived (kernel source lives in sdb3).  Full ftrace buffer (echo
> 1 > events/block/enable) available off list if desired.  dmesg.txt.xz
> is dmesg from post hang crashdump, attached because it contains the
> tail of trace buffer, so _might_ be useful.
> 
> homer:~ # df|grep sd
> /dev/sdb3 ?????959074776 785342824 172741072 ?82% /
> /dev/sdc3 ?????959074776 455464912 502618984 ?48% /backup
> /dev/sdb1 ????????159564 ?????7980 ???151584 ??6% /boot/efi
> /dev/sdd1 ?????961301832 393334868 519112540 ?44% /abuild
> 
> Kernel is virgin?modulo these...
> 
> patches/remove_irritating_plus.diff
> patches/add-scm-version-to-EXTRAVERSION.patch
> patches/block-bfq:-postpone-rq-preparation-to-insert-or-merge.patch
> patches/block-bfq:-test.patch  (hang provocation hack from Paolo)

All the block debug files are empty...

-- 
Jens Axboe