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Re: PCI arbiter crash on last qemu image
From: |
Damien Zammit |
Subject: |
Re: PCI arbiter crash on last qemu image |
Date: |
Mon, 17 Aug 2020 09:51:26 +1000 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 |
Hi there,
On 17/8/20 1:04 am, Joan Lledó wrote:
> I found the same issue, investigating a bit more I found that in
> func_files.c:201[1], the value of region->memory is 0x0, so reading from
> there raises a segfault. That pointer should be filled in libpciacces,
> at x86_pci.c:601[2] during the startup, but for some reason it seems it
> doesn't. Regrettably I don't have the time to go further right know.
>
> Could it be some issue with /dev/mem?
It's probably due to this patch:
https://gitlab.freedesktop.org/xorg/lib/libpciaccess/-/merge_requests/12/diffs?commit_id=952f4553f91da3f3eb8615a8d53a6da7f7bc0080
(We are not using master of pciaccess).
I removed the mapping and set it to NULL because there was a bug that caused
the initial mapping within "probe" to prevent further mappings of the same
region later on.
Perhaps a better way to fix the mapping problem I encountered
is by removing the check for previous mappings when trying to map regions,
but no one commented on my PR upstream (yet).
Damien
- PCI arbiter crash on last qemu image, Joan Lledó, 2020/08/15
- Re: PCI arbiter crash on last qemu image, Damien Zammit, 2020/08/15
- Re: PCI arbiter crash on last qemu image, Joan Lledó, 2020/08/16
- Re: PCI arbiter crash on last qemu image,
Damien Zammit <=
- Re: PCI arbiter crash on last qemu image, Joan Lledó, 2020/08/17
- Re: PCI arbiter crash on last qemu image, Damien Zammit, 2020/08/18
- Re: PCI arbiter crash on last qemu image, Damien Zammit, 2020/08/22
- Re: PCI arbiter crash on last qemu image, Joan Lledó, 2020/08/22
- Re: PCI arbiter crash on last qemu image, Damien Zammit, 2020/08/22
- Re: PCI arbiter crash on last qemu image, Damien Zammit, 2020/08/22
- Re: PCI arbiter crash on last qemu image, Joan Lledó, 2020/08/22
- Re: PCI arbiter crash on last qemu image, Joan Lledó, 2020/08/23
- Re: PCI arbiter crash on last qemu image, Damien Zammit, 2020/08/26
- Re: PCI arbiter crash on last qemu image, Joan Lledó, 2020/08/26