From: Christian Borntraeger <borntraeger@de.ibm.com>
To: mcgrof@kernel.org
Cc: ast@kernel.org, axboe@kernel.dk, bfields@fieldses.org,
bridge@lists.linux-foundation.org, chainsaw@gentoo.org,
christian.brauner@ubuntu.com, chuck.lever@oracle.com,
davem@davemloft.net, dhowells@redhat.com,
gregkh@linuxfoundation.org, jarkko.sakkinen@linux.intel.com,
jmorris@namei.org, josh@joshtriplett.org, keescook@chromium.org,
keyrings@vger.kernel.org, kuba@kernel.org,
lars.ellenberg@linbit.com, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-nfs@vger.kernel.org,
linux-security-module@vger.kernel.org,
nikolay@cumulusnetworks.com, philipp.reisner@linbit.com,
ravenexp@gmail.com, roopa@cumulusnetworks.com, serge@hallyn.com,
slyfox@gentoo.org, viro@zeniv.linux.org.uk,
yangtiezhu@loongson.cn, netdev@vger.kernel.org,
markward@linux.ibm.com, linux-s390 <linux-s390@vger.kernel.org>
Subject: Re: linux-next: umh: fix processed error when UMH_WAIT_PROC is used seems to break linux bridge on s390x (bisected)
Date: Wed, 24 Jun 2020 13:11:54 +0200 [thread overview]
Message-ID: <3118dc0d-a3af-9337-c897-2380062a8644@de.ibm.com> (raw)
In-Reply-To: <b7d658b9-606a-feb1-61f9-b58e3420d711@de.ibm.com>
On 23.06.20 16:23, Christian Borntraeger wrote:
>
>
> On 23.06.20 16:11, Christian Borntraeger wrote:
>> Jens Markwardt reported a regression in the linux-next runs. with "umh: fix
>> processed error when UMH_WAIT_PROC is used" (from linux-next) a linux bridge
>> with an KVM guests no longer activates :
>>
>> without patch
>> # ip addr show dev virbr1
>> 6: virbr1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
>> link/ether 52:54:00:1e:3f:c0 brd ff:ff:ff:ff:ff:ff
>> inet 192.168.254.254/24 brd 192.168.254.255 scope global virbr1
>> valid_lft forever preferred_lft forever
>>
>> with this patch the bridge stays DOWN with NO-CARRIER
>>
>> # ip addr show dev virbr1
>> 6: virbr1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
>> link/ether 52:54:00:1e:3f:c0 brd ff:ff:ff:ff:ff:ff
>> inet 192.168.254.254/24 brd 192.168.254.255 scope global virbr1
>> valid_lft forever preferred_lft forever
>>
>> This was bisected in linux-next. Reverting from linux-next also fixes the issue.
>>
>> Any idea?
>
> FWIW, s390 is big endian. Maybe some of the shifts inn the __KW* macros are wrong.
Does anyone have an idea why "umh: fix processed error when UMH_WAIT_PROC is used" breaks the
linux-bridge on s390?
next prev parent reply other threads:[~2020-06-24 11:17 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-10 15:49 [PATCH 0/5] kmod/umh: a few fixes Luis R. Rodriguez
2020-06-10 15:49 ` [PATCH 1/5] selftests: kmod: Use variable NAME in kmod_test_0001() Luis R. Rodriguez
2020-06-10 15:49 ` [PATCH 2/5] kmod: Remove redundant "be an" in the comment Luis R. Rodriguez
2020-06-10 15:49 ` [PATCH 3/5] test_kmod: Avoid potential double free in trigger_config_run_type() Luis R. Rodriguez
2020-06-10 15:49 ` [PATCH 4/5] umh: fix processed error when UMH_WAIT_PROC is used Luis R. Rodriguez
2020-06-23 14:11 ` linux-next: umh: fix processed error when UMH_WAIT_PROC is used seems to break linux bridge on s390x (bisected) Christian Borntraeger
2020-06-23 14:23 ` Christian Borntraeger
2020-06-24 11:11 ` Christian Borntraeger [this message]
2020-06-24 12:05 ` Luis Chamberlain
2020-06-24 13:17 ` Luis Chamberlain
2020-06-24 16:13 ` Luis Chamberlain
2020-06-24 14:43 ` Christoph Hellwig
2020-06-24 15:54 ` Christian Borntraeger
2020-06-24 16:09 ` Luis Chamberlain
2020-06-24 17:58 ` Christian Borntraeger
2020-06-24 18:09 ` Christian Borntraeger
2020-06-24 18:32 ` Christian Borntraeger
2020-06-24 18:37 ` Christian Borntraeger
2020-06-25 13:26 ` Christian Borntraeger
2020-06-26 2:54 ` Luis Chamberlain
2020-06-26 5:22 ` Christian Borntraeger
2020-06-26 9:00 ` Christoph Hellwig
2020-06-26 11:40 ` Luis Chamberlain
2020-06-26 11:50 ` Luis Chamberlain
2020-06-30 17:57 ` Luis Chamberlain
2020-07-01 10:08 ` Christian Borntraeger
2020-07-01 13:24 ` Tetsuo Handa
2020-07-01 13:53 ` Luis Chamberlain
2020-07-01 14:08 ` Tetsuo Handa
2020-07-01 15:38 ` Luis Chamberlain
2020-07-01 15:48 ` Christian Borntraeger
2020-07-01 15:58 ` Luis Chamberlain
2020-07-01 16:01 ` Christian Borntraeger
2020-07-02 4:26 ` Tetsuo Handa
2020-07-02 19:46 ` Luis Chamberlain
2020-07-03 0:52 ` Tetsuo Handa
2020-07-03 13:28 ` Luis Chamberlain
2020-07-01 15:26 ` Christian Borntraeger
2020-07-01 13:46 ` Luis Chamberlain
2020-06-10 15:49 ` [PATCH 5/5] selftests: simplify kmod failure value Luis R. Rodriguez
2020-06-18 0:43 ` [PATCH 0/5] kmod/umh: a few fixes Andrew Morton
2020-06-19 20:46 ` Luis Chamberlain
2020-06-19 21:07 ` Luis Chamberlain
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