[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [Bug 1349972] Re: qcow2-refcount: qemu-io crashes on 'disca
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [Bug 1349972] Re: qcow2-refcount: qemu-io crashes on 'discard' command |
Date: |
Fri, 08 May 2015 11:13:15 -0000 |
I sent a patch that fixes the original problem that Maria reported. It's
hard to say whether this is the same problem as you saw, Sam, but it's
quite possible.
** Changed in: qemu
Status: New => In Progress
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1349972
Title:
qcow2-refcount: qemu-io crashes on 'discard' command
Status in QEMU:
In Progress
Bug description:
qemu-io is killed by SIGIOT at the 'discard' command on the image
having no refcount information.
Sequence:
1. Unpack test.img and backing_img.qed in the same directory (see the
attached archives for images)
2. Make a copy of test.img to copy.img (qemu-io modifies the image before
being kill, therefore the image backup is necessary)
3. Run the command
qemu-io copy.img -c 'discard 2210816 2856448'
Result: qemu-io is killed by SIGIOT with the reason:
qemu-io: block/qcow2-refcount.c:468: update_refcount_discard:
Assertion `d->bytes + length == new_end - new_start' failed.
The image was generated by the image fuzzer.
qemu.git HEAD: 1d80eb7a680d
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1349972/+subscriptions