linux-kernel - RE: linux-next: build failure after merge of the akpm tree

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Message-ID: <53305fcee334c0f8cb0b66acc6d3381f@mail.gmail.com>
Date:   Thu, 17 Jun 2021 17:45:58 +0530
From:   Muneendra Kumar M <muneendra.kumar@...adcom.com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        tj@...nel.org
Subject: RE: linux-next: build failure after merge of the akpm tree

Hi Stephen,
A small query.
How do I look at the tree where the build is failing.

Regards,
Muneendra.



-----Original Message-----
From: Stephen Rothwell [mailto:sfr@...b.auug.org.au]
Sent: Thursday, June 17, 2021 3:02 PM
To: Andrew Morton <akpm@...ux-foundation.org>; Martin K. Petersen
<martin.petersen@...cle.com>
Cc: Muneendra Kumar <muneendra.kumar@...adcom.com>; Linux Kernel Mailing
List <linux-kernel@...r.kernel.org>; Linux Next Mailing List
<linux-next@...r.kernel.org>
Subject: linux-next: build failure after merge of the akpm tree

Hi all,

After merging the akpm tree, today's linux-next build (x86_64
allmodconfig) failed like this:

ERROR: modpost: "cgroup_get_e_css" [drivers/nvme/host/nvme-fc.ko]
undefined!
ERROR: modpost: "cgroup_get_e_css" [drivers/block/loop.ko] undefined!

Caused by patch

  kernel/cgroup/cgroup.c: don't export cgroup_get_e_css twice

I am not sure what happened here, but this patch interacts with commit

  6b658c4863c1 ("scsi: cgroup: Add cgroup_get_from_id()")

from the scsi-mkp tree which adds the EXPORT_SYMBOL_GPL().

I have reverted that akpm tree patch for today.

-- 
Cheers,
Stephen Rothwell

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