From: Jonathan Tan <jonathantanmy@google.com>
To: Elijah Newren via GitGitGadget <gitgitgadget@gmail.com>
Cc: Jonathan Tan <jonathantanmy@google.com>,
git@vger.kernel.org, Elijah Newren <newren@gmail.com>
Subject: Re: [PATCH 06/11] sparse-checkout: avoid using internal API of unpack-trees, take 2
Date: Fri, 24 Feb 2023 15:22:56 -0800 [thread overview]
Message-ID: <20230224232256.2038749-1-jonathantanmy@google.com> (raw)
In-Reply-To: <8955b45e35474e5feb826101423470d0b51e5470.1677143700.git.gitgitgadget@gmail.com>
"Elijah Newren via GitGitGadget" <gitgitgadget@gmail.com> writes:
> From: Elijah Newren <newren@gmail.com>
>
> Commit 2f6b1eb794 ("cache API: add a "INDEX_STATE_INIT" macro/function,
> add release_index()", 2023-01-12) mistakenly added some initialization
> of a member of unpack_trees_options that was intended to be
> internal-only. Further, it served no purpose as it simply duplicated
> the initialization that unpack-trees.c code was already doing.
>
> Signed-off-by: Elijah Newren <newren@gmail.com>
> ---
> builtin/sparse-checkout.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/builtin/sparse-checkout.c b/builtin/sparse-checkout.c
> index 4b7390ce367..8d5ae6f2a60 100644
> --- a/builtin/sparse-checkout.c
> +++ b/builtin/sparse-checkout.c
> @@ -217,7 +217,6 @@ static int update_working_directory(struct pattern_list *pl)
> o.head_idx = -1;
> o.src_index = r->index;
> o.dst_index = r->index;
> - index_state_init(&o.result, r);
> o.skip_sparse_checkout = 0;
>
> setup_work_tree();
The commit message seems to imply that in this code path, there is some
code in unpack-trees.c that runs index_state_init(), but that doesn't
seem to be the case. memset-ting the result field with a junk value
causes valgrind to fail with the following trace:
==2035705== Invalid read of size 8
==2035705== at 0x30D982: lazy_init_name_hash (name-hash.c:602)
==2035705== by 0x30DDDA: index_file_exists (name-hash.c:721)
==2035705== by 0x3F71A8: check_ok_to_remove (unpack-trees.c:2430)
==2035705== by 0x3F74EE: verify_absent_1 (unpack-trees.c:2495)
==2035705== by 0x3F75C6: verify_absent_sparse (unpack-trees.c:2523)
==2035705== by 0x3F2A15: apply_sparse_checkout (unpack-trees.c:566)
==2035705== by 0x3F6849: update_sparsity (unpack-trees.c:2147)
==2035705== by 0x1FC105: update_working_directory (sparse-checkout.c:228)
so it might be better to move the init invocation to update_sparsity()
instead of only removing it.
next prev parent reply other threads:[~2023-02-24 23:23 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-23 9:14 [PATCH 00/11] Clarify API for dir.[ch] and unpack-trees.[ch] -- mark relevant fields as internal Elijah Newren via GitGitGadget
2023-02-23 9:14 ` [PATCH 01/11] dir: separate public from internal portion of dir_struct Elijah Newren via GitGitGadget
2023-02-23 9:14 ` [PATCH 02/11] dir: add a usage note to exclude_per_dir Elijah Newren via GitGitGadget
2023-02-24 22:31 ` Jonathan Tan
2023-02-25 0:23 ` Elijah Newren
2023-02-25 1:54 ` Jonathan Tan
2023-02-25 3:23 ` Elijah Newren
2023-02-23 9:14 ` [PATCH 03/11] dir: mark output only fields of dir_struct as such Elijah Newren via GitGitGadget
2023-02-23 9:14 ` [PATCH 04/11] unpack-trees: clean up some flow control Elijah Newren via GitGitGadget
2023-02-24 22:33 ` Jonathan Tan
2023-02-23 9:14 ` [PATCH 05/11] sparse-checkout: avoid using internal API of unpack-trees Elijah Newren via GitGitGadget
2023-02-24 22:37 ` Jonathan Tan
2023-02-25 0:33 ` Elijah Newren
2023-02-23 9:14 ` [PATCH 06/11] sparse-checkout: avoid using internal API of unpack-trees, take 2 Elijah Newren via GitGitGadget
2023-02-24 23:22 ` Jonathan Tan [this message]
2023-02-25 0:40 ` Elijah Newren
2023-02-23 9:14 ` [PATCH 07/11] unpack_trees: start splitting internal fields from public API Elijah Newren via GitGitGadget
2023-02-23 9:14 ` [PATCH 08/11] unpack-trees: mark fields only used internally as internal Elijah Newren via GitGitGadget
2023-02-23 9:14 ` [PATCH 09/11] unpack-trees: rewrap a few overlong lines from previous patch Elijah Newren via GitGitGadget
2023-02-23 9:14 ` [PATCH 10/11] unpack-trees: special case read-tree debugging as internal usage Elijah Newren via GitGitGadget
2023-02-23 9:15 ` [PATCH 11/11] unpack-trees: add usage notices around df_conflict_entry Elijah Newren via GitGitGadget
2023-02-23 15:18 ` [PATCH 00/11] Clarify API for dir.[ch] and unpack-trees.[ch] -- mark relevant fields as internal Derrick Stolee
2023-02-23 15:26 ` Derrick Stolee
2023-02-23 20:35 ` Elijah Newren
2023-02-23 20:31 ` Elijah Newren
2023-02-24 1:24 ` Junio C Hamano
2023-02-24 5:54 ` Jacob Keller
2023-02-24 23:36 ` Jonathan Tan
2023-02-25 2:25 ` [PATCH v2 " Elijah Newren via GitGitGadget
2023-02-25 2:25 ` [PATCH v2 01/11] dir: separate public from internal portion of dir_struct Elijah Newren via GitGitGadget
2023-02-25 2:25 ` [PATCH v2 02/11] dir: add a usage note to exclude_per_dir Elijah Newren via GitGitGadget
2023-02-25 2:25 ` [PATCH v2 03/11] dir: mark output only fields of dir_struct as such Elijah Newren via GitGitGadget
2023-02-25 2:25 ` [PATCH v2 04/11] unpack-trees: clean up some flow control Elijah Newren via GitGitGadget
2023-02-25 2:25 ` [PATCH v2 05/11] sparse-checkout: avoid using internal API of unpack-trees Elijah Newren via GitGitGadget
2023-02-25 2:25 ` [PATCH v2 06/11] sparse-checkout: avoid using internal API of unpack-trees, take 2 Elijah Newren via GitGitGadget
2023-02-25 2:25 ` [PATCH v2 07/11] unpack_trees: start splitting internal fields from public API Elijah Newren via GitGitGadget
2023-02-25 2:25 ` [PATCH v2 08/11] unpack-trees: mark fields only used internally as internal Elijah Newren via GitGitGadget
2023-02-25 2:25 ` [PATCH v2 09/11] unpack-trees: rewrap a few overlong lines from previous patch Elijah Newren via GitGitGadget
2023-02-25 2:25 ` [PATCH v2 10/11] unpack-trees: special case read-tree debugging as internal usage Elijah Newren via GitGitGadget
2023-02-25 2:26 ` [PATCH v2 11/11] unpack-trees: add usage notices around df_conflict_entry Elijah Newren via GitGitGadget
2023-02-25 23:30 ` [PATCH v2 00/11] Clarify API for dir.[ch] and unpack-trees.[ch] -- mark relevant fields as internal Junio C Hamano
2023-02-27 15:28 ` [PATCH v3 00/13] " Elijah Newren via GitGitGadget
2023-02-27 15:28 ` [PATCH v3 01/13] t2021: fix platform-specific leftover cruft Elijah Newren via GitGitGadget
2023-02-27 19:11 ` Derrick Stolee
2023-02-27 15:28 ` [PATCH v3 02/13] unpack-trees: heed requests to overwrite ignored files Elijah Newren via GitGitGadget
2023-02-27 23:20 ` Jonathan Tan
2023-02-27 15:28 ` [PATCH v3 03/13] dir: separate public from internal portion of dir_struct Elijah Newren via GitGitGadget
2023-02-27 15:28 ` [PATCH v3 04/13] dir: add a usage note to exclude_per_dir Elijah Newren via GitGitGadget
2023-02-27 15:28 ` [PATCH v3 05/13] dir: mark output only fields of dir_struct as such Elijah Newren via GitGitGadget
2023-02-27 15:28 ` [PATCH v3 06/13] unpack-trees: clean up some flow control Elijah Newren via GitGitGadget
2023-02-27 15:28 ` [PATCH v3 07/13] sparse-checkout: avoid using internal API of unpack-trees Elijah Newren via GitGitGadget
2023-02-27 15:28 ` [PATCH v3 08/13] sparse-checkout: avoid using internal API of unpack-trees, take 2 Elijah Newren via GitGitGadget
2023-02-27 15:28 ` [PATCH v3 09/13] unpack_trees: start splitting internal fields from public API Elijah Newren via GitGitGadget
2023-02-27 15:28 ` [PATCH v3 10/13] unpack-trees: mark fields only used internally as internal Elijah Newren via GitGitGadget
2023-02-27 15:28 ` [PATCH v3 11/13] unpack-trees: rewrap a few overlong lines from previous patch Elijah Newren via GitGitGadget
2023-02-27 15:28 ` [PATCH v3 12/13] unpack-trees: special case read-tree debugging as internal usage Elijah Newren via GitGitGadget
2023-02-27 15:28 ` [PATCH v3 13/13] unpack-trees: add usage notices around df_conflict_entry Elijah Newren via GitGitGadget
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