Kexec Archive on lore.kernel.org
 help / color / mirror / Atom feed
From: "Jürgen Herrmann" <t-5@t-5.eu>
To: kexec@lists.infradead.org
Subject: Re: cannot get kdump to work, kexec stops in load_segments()
Date: Wed, 26 Sep 2018 11:43:17 +0200	[thread overview]
Message-ID: <e10057f18c5c50faa4e10238c8ad1547@t-5.eu> (raw)
In-Reply-To: <73ee47d5aea541566c89ff264c2d39ed@t-5.eu>

Am 20.9.2018 19:52, schrieb Jürgen Herrmann:
> Hello!
> 
> I am trying to debug a hang in btrfs-send: I talked to the guys on the
> linux-btrfs
> mailing list and they need a kdump of the state when the hang happens.
> 
> I already set up kdump:
> $ kdump-config show
> DUMP_MODE:        kdump
> USE_KDUMP:        1
> KDUMP_SYSCTL:     kernel.panic_on_oops=1
> KDUMP_COREDIR:    /var/crash
> crashkernel addr: 0x24000000
>    /vmlinuz: symbolic link to boot/vmlinuz-4.15.0-34-generic
> kdump initrd:
>    /initrd.img: symbolic link to boot/initrd.img-4.15.0-34-generic
> current state:    ready to kdump
> 
> kexec command:
>   /sbin/kexec -p -d --command-line="BOOT_IMAGE=/vmlinuz-4.18.6
> root=UUID=a914c141-72bf-448b-847f-d64ee82d8b7b ro rootflags=subvol=@
> quiet splash vt.handoff=1 nr_cpus=1 systemd.unit=kdump-tools.service
> irqpoll nousb ata_piix.prefer_ms_hyperv=0" --initrd=/initrd.img
> /vmlinuz
> 
> Kernel version is 4.18.6 from kernel.org
> 
> CPU: Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz
> 
> I did a little digging in the kernel code with printk() statements and
> the execution stops in arch/x86/kernel/machine_kexec_64.c in function
> load_segments(). The last printk I see is before the call of 
> load_segments().
> 
> A screenshot of the "test-crash" can be seen here:
> https://t-5.eu/owncloud/index.php/s/WCxoNuSqnKVg6J7
> 
> What else do I need to provide in terms of information?
> 
> Best regards,
> Jürgen

Anybody??

-- 
Jürgen Herrmann
https://t-5.eu
ALbertstraße 2
94327 Bogen

_______________________________________________
kexec mailing list
kexec@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/kexec

      reply	other threads:[~2018-09-26  9:43 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-20 17:52 cannot get kdump to work, kexec stops in load_segments() Jürgen Herrmann
2018-09-26  9:43 ` Jürgen Herrmann [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=e10057f18c5c50faa4e10238c8ad1547@t-5.eu \
    --to=t-5@t-5.eu \
    --cc=kexec@lists.infradead.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox