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rCDQYyakH2tJNQgkXkeLodBKF4bHiBbuwj0E39S9wmGgg+q4OTnAO/yhQGknle7a7G5xHBwE i0HjnLoJP5jDcoMTabZTIazXmJz3pKM11HYJ5/ZsTIf3ZRJJKIvXJpbmcAPVwTZII6XxiJdh RSSX4Mvd5pL/+5WI6NTdW6DMfigTtdd85fe6PwBNVJL2ZvBfsBJZ5rxg1TOH3KLsYBqBTgW2 glQofxhkJhDEcvjLhe3Y2BlbCWKOmvM8XS9TRt0OwUs= Message-ID: <45fed680-02ee-14de-f8f3-4c8a2f0c0c02@redhat.com> Date: Thu, 15 Aug 2019 20:40:34 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <1563553816-148827-3-git-send-email-andrey.shinkevich@virtuozzo.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.48]); Fri, 16 Aug 2019 00:40:36 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: Re: [Qemu-devel] [Qemu-block] [PATCH v5 2/6] iotests: exclude killed processes from running under Valgrind X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, den@openvz.org, vsementsov@virtuozzo.com, mreitz@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 7/19/19 12:30 PM, Andrey Shinkevich wrote: > The Valgrind tool fails to manage its termination when QEMU raises the > signal SIGKILL in the multi-threaded process. The bug has been > reported to the Valgrind maintainers and was registered as Bug 409141. > Let's exclude such test cases from running under the Valgrind until > new release of it because checking for the memory issues is covered by > other test cases. > Link to the bug in the commit message, please: https://bugs.kde.org/show_bug.cgi?id=409141 ...Hey! It looks like they may have fixed it. However, we don't know if the user has a properly fixed version of valgrind or not. How long do we keep these workarounds in-tree? > Signed-off-by: Andrey Shinkevich > --- > tests/qemu-iotests/039 | 5 +++++ > tests/qemu-iotests/061 | 2 ++ > tests/qemu-iotests/137 | 1 + > 3 files changed, 8 insertions(+) > > diff --git a/tests/qemu-iotests/039 b/tests/qemu-iotests/039 > index 0d4e963..95115e2 100755 > --- a/tests/qemu-iotests/039 > +++ b/tests/qemu-iotests/039 > @@ -65,6 +65,7 @@ echo "== Creating a dirty image file ==" > IMGOPTS="compat=1.1,lazy_refcounts=on" > _make_test_img $size > > +VALGRIND_QEMU="" \ > $QEMU_IO -c "write -P 0x5a 0 512" \ > -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \ > | _filter_qemu_io > @@ -100,6 +101,7 @@ echo "== Opening a dirty image read/write should repair it ==" > IMGOPTS="compat=1.1,lazy_refcounts=on" > _make_test_img $size > This seems like the sort of thing that's going to get forgotten about quickly. It's not clear (if you're reading the test source) why we're setting VALGRIND_QEMU="" before these invocations. Is it possible to create some kind of _NO_VALGRIND() shim that has some comment in it, like: # Valgrind bug #409141 https://bugs.kde.org/show_bug.cgi?id=409141 # Until valgrind 3.16+ is ubiquitous, we must work around a hang in # valgrind when issuing sigkill. Disable valgrind for this invocation. VALGRIND_QEMU="" exec "$@" (something like that.) This way: (1) The workaround is being clearly demonstrated as a bit of a hack (2) The shim explains what the hack is for (3) When we decide we no longer need the hack, we can pull it out of a central location and easily grep to find callers of the shim. > +VALGRIND_QEMU="" \ > $QEMU_IO -c "write -P 0x5a 0 512" \ > -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \ > | _filter_qemu_io > @@ -118,6 +120,7 @@ echo "== Creating an image file with lazy_refcounts=off ==" > IMGOPTS="compat=1.1,lazy_refcounts=off" > _make_test_img $size > > +VALGRIND_QEMU="" \ > $QEMU_IO -c "write -P 0x5a 0 512" \ > -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \ > | _filter_qemu_io > @@ -151,6 +154,7 @@ echo "== Changing lazy_refcounts setting at runtime ==" > IMGOPTS="compat=1.1,lazy_refcounts=off" > _make_test_img $size > > +VALGRIND_QEMU="" \ > $QEMU_IO -c "reopen -o lazy-refcounts=on" \ > -c "write -P 0x5a 0 512" \ > -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \ > @@ -163,6 +167,7 @@ _check_test_img > IMGOPTS="compat=1.1,lazy_refcounts=on" > _make_test_img $size > > +VALGRIND_QEMU="" \ > $QEMU_IO -c "reopen -o lazy-refcounts=off" \ > -c "write -P 0x5a 0 512" \ > -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \ > diff --git a/tests/qemu-iotests/061 b/tests/qemu-iotests/061 > index d7dbd7e..5d0724c 100755 > --- a/tests/qemu-iotests/061 > +++ b/tests/qemu-iotests/061 > @@ -73,6 +73,7 @@ echo > echo "=== Testing dirty version downgrade ===" > echo > IMGOPTS="compat=1.1,lazy_refcounts=on" _make_test_img 64M > +VALGRIND_QEMU="" \ > $QEMU_IO -c "write -P 0x2a 0 128k" -c flush \ > -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 | _filter_qemu_io > $PYTHON qcow2.py "$TEST_IMG" dump-header > @@ -107,6 +108,7 @@ echo > echo "=== Testing dirty lazy_refcounts=off ===" > echo > IMGOPTS="compat=1.1,lazy_refcounts=on" _make_test_img 64M > +VALGRIND_QEMU="" \ > $QEMU_IO -c "write -P 0x2a 0 128k" -c flush \ > -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 | _filter_qemu_io > $PYTHON qcow2.py "$TEST_IMG" dump-header > diff --git a/tests/qemu-iotests/137 b/tests/qemu-iotests/137 > index 0c3d2a1..a442fc8 100755 > --- a/tests/qemu-iotests/137 > +++ b/tests/qemu-iotests/137 > @@ -130,6 +130,7 @@ echo > > # Whether lazy-refcounts was actually enabled can easily be tested: Check if > # the dirty bit is set after a crash > +VALGRIND_QEMU="" \ > $QEMU_IO \ > -c "reopen -o lazy-refcounts=on,overlap-check=blubb" \ > -c "write -P 0x5a 0 512" \ >