Re: Regression in IPMI on 4.15.6

From: Laura Abbott
Date: Fri Mar 02 2018 - 10:59:47 EST


On 03/02/2018 05:46 AM, Corey Minyard wrote:
On 02/28/2018 01:07 PM, Corey Minyard wrote:
On 02/28/2018 08:17 AM, Corey Minyard wrote:
On 02/28/2018 07:53 AM, Corey Minyard wrote:
On 02/27/2018 05:55 PM, Laura Abbott wrote:
Hi,

Fedora got a bug report of a crash in IPMI on 4.15.6
https://bugzilla.redhat.com/show_bug.cgi?id=1549316
Unfortunately, it's only a screenshot but it's fairly
clear. It looks like a panic in the error handling path
in platform_device_unregister. Any ideas?



You may also run into another issue. You can pull the
individual patch at

https://github.com/cminyard/linux-ipmi.git c8a1972e77dbe321ce5ce0247056e727234cbaec

Actually, it needed a few more tweaks. Can you do change
426fa6179dae677134dfb37b21d057819418515b
instead? It's "ipmi: Fix some error cleanup issues"

I can send you patches, if you like. If you could test and get back
to me, that would be great.

Laura, have you had a chance to test this? I'd like to get it in soon,
if possible.

Thanks,

-corey


Sorry, this got missed. I'll ask the reporter to reproduce today.


BTW, the IPMI setup in your system is incorrect. SMBIOS says it's at a
memory address, but it's at an I/O address. And the address given
doesn't appear to be a valid address, the value read doesn't appear
to be a valid value.

-corey


for that fix.

-corey

Yeah, this is fixed by 174134ac7602 "ipmi_si: Fix error
handling of platform device" in mainstream.

I guess I need to request a backport of this.

Thanks for reporting.

-corey


Thanks,
Laura