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From: Jan Stancek <jstancek@redhat.com>
To: ltp@lists.linux.it
Subject: [LTP] [PATCH 2/2] lib/cloner.c: Use __clone instead of clone for s390
Date: Fri, 8 May 2020 10:20:14 -0400 (EDT)	[thread overview]
Message-ID: <475724112.11805789.1588947614752.JavaMail.zimbra@redhat.com> (raw)
In-Reply-To: <8f28b9797be3408c0c1086d0a2bc9c052b55bfe2.1588942426.git.agordeev@linux.ibm.com>



----- Original Message -----
> The kernel sys_clone and s390 glibc entry __clone assume
> the flags parameter type as unsigned long. However, the
> glibc clone wrapper used by ltp_clone helper defines flags
> as signed int. That leads to gcc extending CLONE_IO flag of
> 0x80000000 value to 0xffffffff80000000.

Same problem exists on ppc64le. There's a patch proposed to fix this on
kernel side:
  https://lore.kernel.org/lkml/20200507103214.77218-1-christian.brauner@ubuntu.com/

Earlier discussion is here:
  https://sourceware.org/pipermail/libc-alpha/2020-May/113596.html


  reply	other threads:[~2020-05-08 14:20 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-08 13:09 [LTP] [PATCH 0/2] syscalls/kcmp03.c: Fix CLONE_IO failure on s390 Alexander Gordeev
2020-05-08 13:09 ` [LTP] [PATCH 1/2] syscalls/kcmp03.c: Extend clone_type type to unsigned long Alexander Gordeev
2020-05-08 13:09 ` [LTP] [PATCH 2/2] lib/cloner.c: Use __clone instead of clone for s390 Alexander Gordeev
2020-05-08 14:20   ` Jan Stancek [this message]
2020-05-11  8:33     ` Petr Vorel

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