From: "Martin Ågren" <martin.agren@gmail.com>
To: Jeff King <peff@peff.net>
Cc: Git Mailing List <git@vger.kernel.org>, Stephan Beyer <s-beyer@gmx.net>
Subject: Re: [PATCH] diff-lib: clear `pending` object-array in `index_differs_from()`
Date: Thu, 21 Sep 2017 05:56:21 +0200 [thread overview]
Message-ID: <CAN0heSqVxBreaZN9x1XtX2OpeAoVZNzixr+vzyCWwe8UKtdtgQ@mail.gmail.com> (raw)
In-Reply-To: <20170920200229.bc4yniz6otng2zyz@sigill.intra.peff.net>
On 20 September 2017 at 22:02, Jeff King <peff@peff.net> wrote:
> On Wed, Sep 20, 2017 at 09:47:24PM +0200, Martin Ågren wrote:
>
>> Instead of conditionally freeing `rev.pending.objects`, just call
>> `object_array_clear()` on `rev.pending`. This means we don't poke as
>> much into the implementation, which is already a good thing, but also
>> that we free the individual entries as well, thereby fixing a
>> memory-leak.
> Looks good. A similar bug was the exact reason for adding the function
> in 46be82312. I did a grep for 'free.*\.objects' to see if there were
> other cases.
Ah. I grepped for "pending.objects", but didn't go more general than that.
> There are some hits. E.g., the one in orphaned_commit_warning(). It does
> something funny with setting revs.leak_pending. But I _think_ after the
> whole thing is done and we call free(refs.objects), that probably ought
> to be an object_array_clear().
I'll look into that one in the evening.
> As I suspect you're working your way through leak-checker results, I'm
> OK if you want to punt on digging into more cases for now and just fix
> ones that the tool has identified as real leaks.
I am indeed going through ASan results. Your UNLEAK helps immensely!
(I'm collecting UNLEAKs on the side. I see now that UNLEAK is in master,
so I should probably submit those where I believe things are
"UNLEAK-complete".)
Thanks for looking at this.
Martin
next prev parent reply other threads:[~2017-09-21 3:56 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-20 19:47 [PATCH] diff-lib: clear `pending` object-array in `index_differs_from()` Martin Ågren
2017-09-20 20:02 ` Jeff King
2017-09-21 3:56 ` Martin Ågren [this message]
2017-09-21 4:52 ` Jeff King
2017-09-22 23:34 ` [PATCH v2 0/6] reroll ma/plugleaks; more `object_array`-fixes Martin Ågren
2017-09-22 23:34 ` [PATCH v2 1/6] builtin/commit: fix memory leak in `prepare_index()` Martin Ågren
2017-09-22 23:34 ` [PATCH v2 2/6] commit: fix memory leak in `reduce_heads()` Martin Ågren
2017-09-22 23:34 ` [PATCH v2 3/6] leak_pending: use `object_array_clear()`, not `free()` Martin Ågren
2017-09-23 3:47 ` Jeff King
2017-09-22 23:34 ` [PATCH v2 4/6] object_array: " Martin Ågren
2017-09-23 4:04 ` Jeff King
2017-09-23 9:41 ` Martin Ågren
2017-09-22 23:34 ` [PATCH v2 5/6] object_array: add and use `object_array_pop()` Martin Ågren
2017-09-23 4:27 ` Jeff King
2017-09-23 9:49 ` Martin Ågren
2017-09-23 15:47 ` Jeff King
2017-09-22 23:34 ` [PATCH v2 6/6] pack-bitmap[-write]: use `object_array_clear()`, don't leak Martin Ågren
2017-09-23 4:35 ` Jeff King
2017-09-23 4:37 ` [PATCH v2 0/6] reroll ma/plugleaks; more `object_array`-fixes Jeff King
2017-09-23 9:54 ` Martin Ågren
2017-09-23 16:13 ` Jeff King
2017-09-23 16:38 ` Jeff King
2017-09-24 19:59 ` Martin Ågren
2017-09-25 16:08 ` Jeff King
2017-10-01 15:04 ` Martin Ågren
2017-09-24 7:01 ` Junio C Hamano
2017-09-24 20:00 ` Martin Ågren
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