From: Jiang Liu <liuj97@gmail.com>
To: Yinghai Lu <yinghai@kernel.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
x86@kernel.org, Tony Luck <tony.luck@intel.com>
Subject: Re: [PATCH] PCI, x86: clear initial value for root info resources
Date: Wed, 19 Sep 2012 23:34:11 +0800 [thread overview]
Message-ID: <5059E5F3.2040809@gmail.com> (raw)
In-Reply-To: <CAE9FiQUxt1kx_SpRWt5eMKvUXuUXwJrd9USeT+WMbCWkDDaQZQ@mail.gmail.com>
On 09/19/2012 07:49 AM, Yinghai Lu wrote:
> On Tue, Sep 18, 2012 at 3:46 PM, Bjorn Helgaas <bhelgaas@google.com> wrote:
>> On Fri, Sep 14, 2012 at 6:48 PM, Yinghai Lu <yinghai@kernel.org> wrote:
>>> Found one system one root bus hot remove get panic.
>>> Panic happens when try to release hostbridge resource.
>>>
>>> It turns out that resource get reject during put into resource tree
>>> because of conflicts.
>>> Also that resource parent pointer have random value.
>>>
>>> That invalid value cause it pass through check __release_pci_root_info
>>> and panic in release_resource.
>>>
>>> Try to use kzalloc instead.
>>
>> Don't we need the same fix for ia64 in pci_acpi_scan_root()? Here's
>> what it does:
>>
>> if (windows) {
>> controller->window =
>> kmalloc_node(sizeof(*controller->window) * windows,
>> GFP_KERNEL, controller->node);
>>
>
>
> yes, but they don't support pci_set_host_bridge_release yet. so they
> should not meet this problem yet.
Hi Yinghai,
We are trying to add pci_set_host_bridge_release() for IA64, so would
appreciate it if you could help to fix IA64 too.
--Gerry
next prev parent reply other threads:[~2012-09-19 15:34 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-15 0:48 [PATCH] PCI, x86: fix default vga ref_count Yinghai Lu
2012-09-15 0:48 ` [PATCH] PCI: Use correct type when freeing bus resource list Yinghai Lu
2012-09-18 22:53 ` Bjorn Helgaas
2012-09-15 0:48 ` [PATCH] PCI, x86: clear initial value for root info resources Yinghai Lu
2012-09-18 22:46 ` Bjorn Helgaas
2012-09-18 23:49 ` Yinghai Lu
2012-09-19 13:12 ` Bjorn Helgaas
2012-09-19 17:17 ` Yinghai Lu
2012-09-19 17:49 ` Yinghai Lu
2012-09-19 17:49 ` [PATCH] PCI, ia64: " Yinghai Lu
2012-09-21 16:50 ` [PATCH] PCI, x86: " Konrad Rzeszutek Wilk
[not found] ` <CAE9FiQV9WK4NG5+aGwVrGO3ueFH3TmmmG5zea+JjwgtQyngNRg@mail.gmail.com>
2012-09-23 20:33 ` Konrad Rzeszutek Wilk
2012-09-19 15:34 ` Jiang Liu [this message]
2012-09-18 22:15 ` [PATCH] PCI, x86: fix default vga ref_count Bjorn Helgaas
2012-09-18 22:39 ` Yinghai Lu
2012-09-18 23:44 ` [PATCH] PCI: " Yinghai Lu
2012-09-18 23:54 ` Matthew Garrett
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=5059E5F3.2040809@gmail.com \
--to=liuj97@gmail.com \
--cc=bhelgaas@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=tony.luck@intel.com \
--cc=x86@kernel.org \
--cc=yinghai@kernel.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;
as well as URLs for NNTP newsgroup(s).