From: Peter Lieven <pl@dlhnet.de>
To: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
ronnie sahlberg <ronniesahlberg@gmail.com>
Subject: [Qemu-devel] iscsi / block segfault regression
Date: Thu, 21 Mar 2013 11:45:35 +0100 [thread overview]
Message-ID: <514AE4CF.70009@dlhnet.de> (raw)
Hi,
I currently try to debug a regression in git master with iscsi that happens with some iscsi volumes.
I added debugging output to all aio calls into block/iscsi.c and it seems that immediately after
brdv_open something is overwriting bs->opaque with a new pointer.
~/git/qemu$ x86_64-softmmu/qemu-system-x86_64 -k de -enable-kvm -m 1024 -drive format=iscsi,file=iscsi://172.21.200.31/iqn.2001-05.com.equallogic:0-8a0906-3c0f4e007-dce91829d0450add-lieven-storage-migration-test-hd0/0,if=virtio,cache=writeback,aio=native
-vnc :1 -boot dc -monitor stdio
iscsi open start
iscsi_full_connect_sync: iscsilun = 140063347224208, iscsilun->iscsi = 140063347225536, bs = 140063347221696, filename=iscsi://172.21.200.31/iqn.2001-05.com.equallogic:0-8a0906-3c0f4e007-dce91829d0450add-lieven-storage-migration-test-hd0/0
iscsi open finish ret=0
iscsi_aio_flush: iscsilun = 140063347230736, iscsilun->iscsi = 0, bs = 140063347221696, filename=iscsi://172.21.200.31/iqn.2001-05.com.equallogic:0-8a0906-3c0f4e007-dce91829d0450add-lieven-storage-migration-test-hd0/0
iscsi_aio_flush_acb: iscsilun = 140063347230736, iscsilun->iscsi = 0, bs = 140063347221696, filename=iscsi://172.21.200.31/iqn.2001-05.com.equallogic:0-8a0906-3c0f4e007-dce91829d0450add-lieven-storage-migration-test-hd0/0
Speicherzugriffsfehler (Speicherabzug geschrieben)
bs address is unchanged, but iscsilun address is changed after connection it seems to an area with zeroed memory. the pointer to the iscsi context
is thus NULL.
iscsilun, iscsilun->iscsi and bs are addresses.
Peter
next reply other threads:[~2013-03-21 11:03 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-21 10:45 Peter Lieven [this message]
2013-03-21 11:03 ` [Qemu-devel] iscsi / block segfault regression Peter Lieven
2013-03-21 11:10 ` Peter Lieven
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=514AE4CF.70009@dlhnet.de \
--to=pl@dlhnet.de \
--cc=pbonzini@redhat.com \
--cc=qemu-devel@nongnu.org \
--cc=ronniesahlberg@gmail.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.