From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg1-f196.google.com ([209.85.215.196]:36854 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404235AbgFXQNW (ORCPT ); Wed, 24 Jun 2020 12:13:22 -0400 Date: Wed, 24 Jun 2020 16:13:19 +0000 From: Luis Chamberlain Subject: Re: linux-next: umh: fix processed error when UMH_WAIT_PROC is used seems to break linux bridge on s390x (bisected) Message-ID: <20200624161319.GM13911@42.do-not-panic.com> References: <20200610154923.27510-5-mcgrof@kernel.org> <20200623141157.5409-1-borntraeger@de.ibm.com> <3118dc0d-a3af-9337-c897-2380062a8644@de.ibm.com> <20200624120546.GC4332@42.do-not-panic.com> <20200624131725.GL13911@42.do-not-panic.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200624131725.GL13911@42.do-not-panic.com> Sender: linux-s390-owner@vger.kernel.org List-ID: To: Christian Borntraeger , Andrew Morton , Martin Doucha , hch@infradead.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 On Wed, Jun 24, 2020 at 01:17:25PM +0000, Luis Chamberlain wrote: > I found however an LTP bug indicating the need to test for > s390 wait macros [0] in light of a recent bug in glibc for s390. > I am asking for references to that issue given I cannot find > any mention of this on glibc yet. > > [0] https://github.com/linux-test-project/ltp/issues/605 I looked into this and the bug associated was: https://sourceware.org/bugzilla/show_bug.cgi?id=19613 The commit in question was upstream glibc commit b49ab5f4503f36dcbf43f821f817da66b2931fe6 ("Remove union wait [BZ #19613]"), and while I don't see anything s390 mentioned there, the issue there was due to the caller of the wait using a long instead of an int for the return value. In other words, that'd not the droid we are looking for. So the issue is something else. Luis