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Groups > linux.debian.bugs.dist > #828005

Bug#864453: fanotify07 LTP testcase hangs process

From Helge Deller <deller@gmx.de>
Newsgroups linux.debian.bugs.dist, linux.debian.kernel
Subject Bug#864453: fanotify07 LTP testcase hangs process
Date 2017-06-08 21:30 +0200
Message-ID <tQbi2-8li-17@gated-at.bofh.it> (permalink)
Organization linux.* mail to news gateway

Cross-posted to 2 groups.

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Package: linux
Version: 4.9.30

The LTP testcase fanotify07 creates hanging processes
with debian kernel 4.9.30 on the hppa platform.

In the source code of LTP's fanotify07.c testcase one can read:
 * Kernel crashes should be fixed by:
 *  96d41019e3ac "fanotify: fix list corruption in fanotify_get_response()"
 *
 * Kernel hangs should be fixed by:
 *  05f0e38724e8 "fanotify: Release SRCU lock when waiting for userspace response"

It seems upstream commit 
05f0e38724e8 "fanotify: Release SRCU lock when waiting for userspace response"
is missing in stable kernel 4.9.30 (and debian kernel), which explains why the
testcase hangs.
I didn't checked if the kernel crash fix is in 4.9.30.

Can you backport at least the commit 05f0e38724e8 ?

Thanks,
Helge

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Thread

Bug#864453: fanotify07 LTP testcase hangs process Helge Deller <deller@gmx.de> - 2017-06-08 21:30 +0200
  Bug#864453: fanotify07 LTP testcase hangs process Ben Hutchings <ben@decadent.org.uk> - 2017-06-12 17:10 +0200
    Bug#864453: fanotify07 LTP testcase hangs process Helge Deller <deller@gmx.de> - 2017-06-18 10:50 +0200
      Bug#864453: fanotify07 LTP testcase hangs process Ben Hutchings <ben@decadent.org.uk> - 2017-06-18 18:20 +0200

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