From: Marko Rauhamaa <marko.rauhamaa@f-secure.com>
To: <linux-fsdevel@vger.kernel.org>
Subject: fanotify read returns with errno == EOPENSTALE
Date: Wed, 22 Mar 2017 17:31:05 +0200 [thread overview]
Message-ID: <87inn12urq.fsf@drapion.f-secure.com> (raw)
An F-Secure product uses fanotify with OPEN_PERM. We ran into an
unexpected situation: a read(2) on the fanotify fd returned -1 with
errno == EOPENSTALE. The only place in the (development) kernel where I
can find EOPENSTALE is in nfs4file.c:nfs4_file_open().
Questions:
* Should an fanotify client expect EOPENSTALE from read(2)?
* According to <URL:
https://github.com/torvalds/linux/blob/master/include/linux/errno.h>,
EOPENSTALE "should never be seen by user programs." Is this a kernel
bug?
* The kernel in question is kernel-3.10.0-229.el7.x86_64 (RHEL 7.3). I
will take it up with Red Hat if necessary. However, is this a known
issue that has been fixed in a newer kernel version?
Marko
next reply other threads:[~2017-03-22 16:16 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-22 15:31 Marko Rauhamaa [this message]
2017-03-22 18:01 ` fanotify read returns with errno == EOPENSTALE Matthew Wilcox
2017-03-22 18:20 ` Amir Goldstein
2017-03-22 19:17 ` Amir Goldstein
2017-03-22 19:31 ` Al Viro
2017-03-22 19:39 ` Amir Goldstein
2017-03-23 8:13 ` Marko Rauhamaa
2017-03-23 11:46 ` Amir Goldstein
2017-03-23 11:56 ` Jeff Layton
2017-03-23 12:43 ` Marko Rauhamaa
[not found] ` <8760j02mfz.fsf-q6puBR44SRrF1m+2HNTUelaTQe2KTcn/@public.gmane.org>
2017-03-23 13:47 ` Amir Goldstein
2017-03-23 13:47 ` Amir Goldstein
2017-03-23 13:47 ` Amir Goldstein
[not found] ` <CAOQ4uxja14p02jQurLTGv_fHrs+UBa5qfacrgY_-7tyv6UJqdw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-04-19 13:46 ` Marko Rauhamaa
2017-04-19 13:46 ` Marko Rauhamaa
[not found] ` <87lgqwa4tg.fsf-q6puBR44SRrF1m+2HNTUelaTQe2KTcn/@public.gmane.org>
2017-04-20 11:06 ` Amir Goldstein
2017-04-20 11:06 ` Amir Goldstein
[not found] ` <CAOQ4uxirSfVVYBexXrWccDHnE5oqxNgUh3-X5Ey1w4R=nHXDjA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-04-20 11:33 ` Amir Goldstein
2017-04-20 11:33 ` Amir Goldstein
[not found] ` <CAOQ4uxjA8Z7wnwuHFCKeKT1xz0Gh-qS40Y6cfPi3fAM0MKsRuQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-04-20 12:43 ` Marko Rauhamaa
2017-04-20 12:43 ` Marko Rauhamaa
[not found] ` <87shl38d1x.fsf-q6puBR44SRrF1m+2HNTUelaTQe2KTcn/@public.gmane.org>
2017-04-20 13:34 ` Amir Goldstein
2017-04-20 13:34 ` Amir Goldstein
[not found] ` <CAOQ4uxiJyrvEJMhM1jhiE5pCgP0iA_LL4Eo_h7UY00wkTKhbTg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-04-21 13:13 ` Marko Rauhamaa
2017-04-21 13:13 ` Marko Rauhamaa
2017-04-20 14:20 ` Jan Kara
[not found] ` <20170420142035.GE22135-4I4JzKEfoa/jFM9bn6wA6Q@public.gmane.org>
2017-04-20 15:06 ` Amir Goldstein
2017-04-20 15:06 ` Amir Goldstein
[not found] ` <CAOQ4uxgAOJjWP6PHY6WgOkNK0vmaTWnFZN+Jvea7zpjJ_VU8Bw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-04-22 7:22 ` Amir Goldstein
2017-04-22 7:22 ` Amir Goldstein
[not found] ` <CAOQ4uxgkXz+8=m2o_faAh2g2Z21KhAf67WckgPNWhktz1=DaWA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-04-24 7:40 ` Marko Rauhamaa
2017-04-24 7:40 ` Marko Rauhamaa
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