Re: linux-next: umh: fix processed error when UMH_WAIT_PROC is used seems to break linux bridge on s390x (bisected)

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To: Christian Borntraeger <borntraeger@xxxxxxxxxx>
Subject: Re: linux-next: umh: fix processed error when UMH_WAIT_PROC is used seems to break linux bridge on s390x (bisected)
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Wed, 24 Jun 2020 15:43:11 +0100
Cc: mcgrof@xxxxxxxxxx, ast@xxxxxxxxxx, axboe@xxxxxxxxx, bfields@xxxxxxxxxxxx, bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx, chainsaw@xxxxxxxxxx, christian.brauner@xxxxxxxxxx, chuck.lever@xxxxxxxxxx, davem@xxxxxxxxxxxxx, dhowells@xxxxxxxxxx, gregkh@xxxxxxxxxxxxxxxxxxx, jarkko.sakkinen@xxxxxxxxxxxxxxx, jmorris@xxxxxxxxx, josh@xxxxxxxxxxxxxxxx, keescook@xxxxxxxxxxxx, keyrings@xxxxxxxxxxxxxxx, kuba@xxxxxxxxxx, lars.ellenberg@xxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-nfs@xxxxxxxxxxxxxxx, linux-security-module@xxxxxxxxxxxxxxx, nikolay@xxxxxxxxxxxxxxxxxxx, philipp.reisner@xxxxxxxxxx, ravenexp@xxxxxxxxx, roopa@xxxxxxxxxxxxxxxxxxx, serge@xxxxxxxxxx, slyfox@xxxxxxxxxx, viro@xxxxxxxxxxxxxxxxxx, yangtiezhu@xxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, markward@xxxxxxxxxxxxx, linux-s390 <linux-s390@xxxxxxxxxxxxxxx>
In-reply-to: <3118dc0d-a3af-9337-c897-2380062a8644@de.ibm.com>

On Wed, Jun 24, 2020 at 01:11:54PM +0200, Christian Borntraeger wrote:
> Does anyone have an idea why "umh: fix processed error when UMH_WAIT_PROC is used" breaks the
> linux-bridge on s390?

Are we even sure this is s390 specific and doesn't happen on other
architectures with the same bridge setup?

Follow-Ups:
- Re: linux-next: umh: fix processed error when UMH_WAIT_PROC is used seems to break linux bridge on s390x (bisected)
  - From: Christian Borntraeger

References:
- [PATCH 4/5] umh: fix processed error when UMH_WAIT_PROC is used
  - From: Luis R. Rodriguez
- linux-next: umh: fix processed error when UMH_WAIT_PROC is used seems to break linux bridge on s390x (bisected)
  - From: Christian Borntraeger
- Re: linux-next: umh: fix processed error when UMH_WAIT_PROC is used seems to break linux bridge on s390x (bisected)
  - From: Christian Borntraeger
- Re: linux-next: umh: fix processed error when UMH_WAIT_PROC is used seems to break linux bridge on s390x (bisected)
  - From: Christian Borntraeger

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