From: Junio C Hamano <gitster@pobox.com>
To: Elijah Newren <newren@gmail.com>
Cc: "Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>,
luke@diamand.org, "Christian Couder" <christian.couder@gmail.com>,
"Git Mailing List" <git@vger.kernel.org>
Subject: Re: [PATCH] unpack-trees.c: fix writing "link" index ext with null base oid
Date: Tue, 12 Feb 2019 08:49:11 -0800 [thread overview]
Message-ID: <xmqq1s4deyuw.fsf@gitster-ct.c.googlers.com> (raw)
In-Reply-To: <CABPp-BF+q0QY1YAKOk4iSrCRuEc7xsG7iqCzeDD9v8+jmvQvzg@mail.gmail.com> (Elijah Newren's message of "Mon, 11 Feb 2019 21:43:35 -0800")
Elijah Newren <newren@gmail.com> writes:
>> There is also another side fix in remove_split_index() that causes a
>> crash when doing "git update-index --no-split-index" when base_oid in
>> the index file is null. In this case we will not load
>> istate->split_index->base but we dereference it anyway and are rewarded
>> with a segfault. This should not happen anymore, but it's still wrong to
>> dereference a potential NULL pointer, especially when we do check for
>> NULL pointer in the next code.
>>
>> Reported-by: Luke Diamand <luke@diamand.org>
>> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
>
> Thanks for digging this down and fixing it. When I saw this split
> index bug bisect to me that my heart sank a little; there's so much of
> that code I don't understand. Nice to see you've already come along
> and fixed it all up. :-)
Thanks, all.
next prev parent reply other threads:[~2019-02-12 16:49 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-06 10:25 could not freshen shared index ..../sharedindex.0000000000000000000000000000000000000000' Luke Diamand
2019-02-06 13:17 ` Christian Couder
2019-02-08 10:02 ` Duy Nguyen
2019-02-08 16:38 ` Luke Diamand
2019-02-09 5:00 ` Duy Nguyen
2019-02-09 9:57 ` Luke Diamand
2019-02-09 10:36 ` Duy Nguyen
2019-02-09 11:23 ` [PATCH] unpack-trees.c: fix writing "link" index ext with null base oid Nguyễn Thái Ngọc Duy
2019-02-09 14:14 ` Luke Diamand
2019-02-12 5:43 ` Elijah Newren
2019-02-12 16:49 ` Junio C Hamano [this message]
2019-02-12 9:36 ` Ævar Arnfjörð Bjarmason
2019-02-13 9:51 ` [PATCH v2] read-cache.c: " Nguyễn Thái Ngọc Duy
2019-02-13 12:14 ` Ævar Arnfjörð Bjarmason
2019-02-08 17:23 ` could not freshen shared index ..../sharedindex.0000000000000000000000000000000000000000' Junio C Hamano
2019-02-09 4:56 ` Duy Nguyen
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