linux-kernel - Re: [PATCH] igb: fix kexec with igb

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 6 Mar 2009 23:31:17 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Jesse Brandeburg <jesse.brandeburg@...il.com>
Cc:	David Miller <davem@...emloft.net>,
	"Rafael J. Wysocki" <rjw@...k.pl>, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	NetDev <netdev@...r.kernel.org>
Subject: Re: [PATCH] igb: fix kexec with igb

On Fri, Mar 6, 2009 at 11:18 PM, Jesse Brandeburg
<jesse.brandeburg@...il.com> wrote:
> On Fri, Mar 6, 2009 at 8:33 PM, Yinghai Lu <yinghai@...nel.org> wrote:
>>
>> Impact: could probe igb
>>
>> Found one system with 82575EB, in the kernel that is kexeced, probe igb
>> failed with -2.
>>
>> it looks like the same behavior happened on forcedeth.
>>
>> try to check system_state to make sure if put it on D3
>>
>> Signed-off-by: Yinghai Lu <yinghai@...nel.org>
>>
>> ---
>>  drivers/net/igb/igb_main.c |   19 ++++++++++++++-----
>>  1 file changed, 14 insertions(+), 5 deletions(-)
>
> I see the point of the patch, but I know for a fact that ixgbe when
> enabled for MSI-X also doesn't work with kexec.
>
> so my questions are:
> are you going to change every driver?

i tend to only change driver that i have related HW.

> why can't this be fixed in core kernel code instead?
will check it.

> Shouldn't pci_enable_device take it out of D3?
> Or maybe it should be taken out of D3 immediately if someone tries to
> ioremap any of the BARx registers?


looks like second kernel can not detect the state any more.

YH
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/