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

From: Muneendra Kumar M
Date: Thu Jun 17 2021 - 08:16:04 EST

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


-----Original Message-----
From: Stephen Rothwell [mailto:sfr@xxxxxxxxxxxxxxxx]
Sent: Thursday, June 17, 2021 3:02 PM
To: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>; Martin K. Petersen
Cc: Muneendra Kumar <muneendra.kumar@xxxxxxxxxxxx>; Linux Kernel Mailing
List <linux-kernel@xxxxxxxxxxxxxxx>; Linux Next Mailing List
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]
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.

Stephen Rothwell

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