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Groups > linux.debian.bugs.dist > #833819

Bug#866511: kernel BUG at nvme/host/pci.c

From Andreas Pflug <pgadmin@pse-consulting.de>
Newsgroups linux.debian.bugs.dist, linux.debian.kernel
Subject Bug#866511: kernel BUG at nvme/host/pci.c
Date 2017-07-06 03:00 +0200
Message-ID <u03jc-5nS-11@gated-at.bofh.it> (permalink)
References <tXLA6-24V-17@gated-at.bofh.it> <tZWrn-Q4-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

Cross-posted to 2 groups.

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Am 05.07.17 um 19:31 schrieb Ben Hutchings:
> Control: reassign -1 src:linux 4.9.30-2+deb9u2
> Control: tag -1 upstream patch moreinfo
>
> On Thu, 2017-06-29 at 19:30 +0200, Andreas Pflug wrote:
>> Package: linux-image-4.9.0-3-amd64
>>
>> Version: 4.9.30-2+deb9u2
>>
>> When starting an ancient Windows Server 2003 virtual machine on a fully
>> updated stretch host, the host will crash repeatably about 10 seconds
>> after start. Kernel logging was implemented over netconsole, so I could
>> capture the kernel output stating
>>
>> kernel BUG at /build/linux-9uDFZV/linux-4.9.30/drivers/nvme/host/pci.c:495!
> A single log line is rarely enough to be useful...
>
>> Hardware is dual E5-2620v4 on Supermicro 10DRI-T with two SAMSUNG
>> MZQLW960HMJP-00003 NVME disks (mdadm RAID-1).
>>
>> drivers/nvme/host/pci.c wasn't changed up to 4.11.8, the crashing
>> function nvme_setup_prps still the same in 4.12rc7, so I guess the bug
>> is still there.
> ...but I happened to see a fix that mentioned this function.
>
> This should make its way into a stable update eventually, but perhaps
> you could confirm that the attached patch fixes your problem by
> following these instructions:
> https://kernel-handbook.alioth.debian.org/ch-common-tasks.html#s-common-official

The description of the patch seems very promising, but using the
4.9.30-2+deb9u2a~test kernel the bug happens as well.
Log is attached, cut after 460 lines: the last trace on CPU15 is
repeated all over again, eventually leading to "Fixing recursive fault
but reboot is needed!"

Regards,
Andreas

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Thread

Bug#866511: kernel BUG at nvme/host/pci.c Andreas Pflug <pgadmin@pse-consulting.de> - 2017-06-29 19:40 +0200
  Bug#866511: kernel BUG at nvme/host/pci.c Ben Hutchings <ben@decadent.org.uk> - 2017-07-05 19:40 +0200
    Bug#866511: kernel BUG at nvme/host/pci.c Andreas Pflug <pgadmin@pse-consulting.de> - 2017-07-06 03:00 +0200
      Bug#866511: kernel BUG at nvme/host/pci.c Ben Hutchings <ben@decadent.org.uk> - 2017-07-06 13:20 +0200
        Bug#866511: kernel BUG at nvme/host/pci.c Andreas Pflug <pgadmin@pse-consulting.de> - 2017-07-10 17:40 +0200
          Bug#866511: kernel BUG at nvme/host/pci.c Ben Hutchings <ben@decadent.org.uk> - 2017-07-10 19:40 +0200
            Bug#866511: kernel BUG at nvme/host/pci.c Andreas Pflug <pgadmin@pse-consulting.de> - 2017-07-28 19:40 +0200

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