From: Junio C Hamano <gitster@pobox.com>
To: Jeff King <peff@peff.net>
Cc: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
"Taylor Blau" <me@ttaylorr.com>,
git@vger.kernel.org, "Derrick Stolee" <dstolee@microsoft.com>
Subject: Re: [PATCH] leak tests: add an interface to the LSAN_OPTIONS "suppressions"
Date: Wed, 27 Oct 2021 13:21:56 -0700 [thread overview]
Message-ID: <xmqqy26euskb.fsf@gitster.g> (raw)
In-Reply-To: <YXkWhFGS/uTAnsI1@coredump.intra.peff.net> (Jeff King's message of "Wed, 27 Oct 2021 05:06:12 -0400")
Jeff King <peff@peff.net> writes:
> I don't think that's true at all. The annotations you showed in that
> message, for example, are pointing at add_rev_cmdline(). But that is
> _not_ the source of the leak, nor where it should be fixed. It is a
> necessary part of how rev_info works. The leak is when the rev_info goes
> out of scope without anybody cleaning it up.
True.
>> Hrm, now that I think about it I think that the cases where I had to
>> resort to valgrind to get around such crappy stacktraces (when that was
>> all I got, even without suppressions) were probably all because there
>> was an UNLEAK() in play...
>
> I don't see how UNLEAK() would impact stack traces. It should either
> make something not-leaked-at-all (in which case LSan will no longer
> mention it), or it does nothing (it throws some wasted memory into a
> structure which is itself not leaked).
I'd prefer to see judicious use of UNLEAK() over LSAN suppressions
that lists things that are not the source of the problem. The list
being kept in the tests that are far away from the actual source
does not help, either.
Thanks.
next prev parent reply other threads:[~2021-10-27 20:22 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-21 3:39 [PATCH 00/11] midx: clean up t5319 under 'SANITIZE=leak' Taylor Blau
2021-10-21 3:39 ` [PATCH 01/11] midx.c: clean up chunkfile after reading the MIDX Taylor Blau
2021-10-21 5:50 ` Junio C Hamano
2021-10-21 11:34 ` Ævar Arnfjörð Bjarmason
2021-10-21 16:16 ` Junio C Hamano
2021-10-22 3:04 ` Taylor Blau
2021-10-21 3:39 ` [PATCH 02/11] midx.c: don't leak MIDX from verify_midx_file Taylor Blau
2021-10-21 5:00 ` Eric Sunshine
2021-10-21 5:54 ` Junio C Hamano
2021-10-21 16:27 ` Junio C Hamano
2021-10-21 3:39 ` [PATCH 03/11] t/helper/test-read-midx.c: free MIDX within read_midx_file() Taylor Blau
2021-10-21 3:39 ` [PATCH 04/11] builtin/pack-objects.c: don't leak memory via arguments Taylor Blau
2021-10-21 3:39 ` [PATCH 05/11] builtin/repack.c: avoid leaking child arguments Taylor Blau
2021-10-21 13:32 ` Derrick Stolee
2021-10-21 18:47 ` Junio C Hamano
2021-10-21 16:37 ` Junio C Hamano
2021-10-22 3:21 ` Taylor Blau
2021-10-21 3:40 ` [PATCH 06/11] builtin/multi-pack-index.c: don't leak concatenated options Taylor Blau
2021-10-21 3:40 ` [PATCH 07/11] pack-bitmap.c: avoid leaking via midx_bitmap_filename() Taylor Blau
2021-10-21 16:54 ` Junio C Hamano
2021-10-22 4:27 ` Taylor Blau
2021-10-21 3:40 ` [PATCH 08/11] pack-bitmap.c: don't leak type-level bitmaps Taylor Blau
2021-10-21 16:59 ` Junio C Hamano
2021-10-21 3:40 ` [PATCH 09/11] pack-bitmap.c: more aggressively free in free_bitmap_index() Taylor Blau
2021-10-21 5:10 ` Eric Sunshine
2021-10-21 18:32 ` Junio C Hamano
2021-10-22 4:29 ` Taylor Blau
2021-10-21 18:43 ` Junio C Hamano
2021-10-21 3:40 ` [PATCH 10/11] pack-bitmap-write.c: don't return without stop_progress() Taylor Blau
2021-10-21 5:12 ` Eric Sunshine
2021-10-21 11:31 ` Ævar Arnfjörð Bjarmason
2021-10-21 18:39 ` Junio C Hamano
2021-10-22 4:32 ` Taylor Blau
2021-10-23 20:28 ` Junio C Hamano
2021-10-23 20:32 ` SubmittingPatchs: clarify choice of base and testing Junio C Hamano
2021-10-23 20:59 ` Ævar Arnfjörð Bjarmason
2021-10-23 21:31 ` Junio C Hamano
2021-10-23 21:40 ` Junio C Hamano
2021-10-25 8:59 ` Fabian Stelzer
2021-10-25 16:48 ` Junio C Hamano
2021-10-25 16:56 ` Junio C Hamano
2021-10-25 17:00 ` Junio C Hamano
2021-12-23 23:12 ` [PATCH v2] " Junio C Hamano
2021-12-28 17:47 ` Elijah Newren
2021-12-30 10:20 ` Fabian Stelzer
2021-12-30 20:18 ` Re* " Junio C Hamano
2021-10-21 3:40 ` [PATCH 11/11] t5319: UNLEAK() the remaining leaks Taylor Blau
2021-10-21 11:50 ` [PATCH 00/11] midx: clean up t5319 under 'SANITIZE=leak' Ævar Arnfjörð Bjarmason
2021-10-22 4:39 ` Taylor Blau
2021-10-22 8:23 ` Ævar Arnfjörð Bjarmason
2021-10-22 10:32 ` [PATCH] leak tests: add an interface to the LSAN_OPTIONS "suppressions" Ævar Arnfjörð Bjarmason
2021-10-26 20:23 ` Taylor Blau
2021-10-26 21:11 ` Jeff King
2021-10-26 21:30 ` Taylor Blau
2021-10-26 21:48 ` Jeff King
2021-10-27 8:04 ` Ævar Arnfjörð Bjarmason
2021-10-27 9:06 ` Jeff King
2021-10-27 20:21 ` Junio C Hamano [this message]
2021-10-27 20:57 ` Ævar Arnfjörð Bjarmason
2021-10-29 20:56 ` Jeff King
2021-10-29 21:05 ` Jeff King
2021-10-27 7:51 ` Ævar Arnfjörð Bjarmason
2021-10-21 13:37 ` [PATCH 00/11] midx: clean up t5319 under 'SANITIZE=leak' Derrick Stolee
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