[Backport stable-25-3] PR #30257: heap-use-after-free in a PQ tablet

[ydbot]

Changelog entry

heap-use-after-free in a PQ tablet: Issue #30258

The BeginDeletePartitions method uses a value that can previously be deleted in TryDeleteWriteId.

Changelog category

• Bugfix

Description for reviewers

Original PR(s)

• PR heap-use-after-free in a PQ tablet #30257

Metadata

• Original PR author(s): @Alek5andr-Kotov
• Cherry-picked by: @Alek5andr-Kotov
• Related issues: heap-use-after-free in a PQ tablet #30258

Git Cherry-Pick Log

=== Cherry-picking 25029c1 ===
Auto-merging ydb/core/persqueue/pqtablet/pq_impl.cpp
[cherry-pick-stable-25-3-251206-135057 59873950832] heap-use-after-free in a PQ tablet (#30257)
 Author: Alek5andr-Kotov <akotov@ydb.tech>
 Date: Sat Dec 6 14:23:11 2025 +0300
 1 file changed, 2 insertions(+), 1 deletion(-)

---

PR was created by cherry-pick workflow run

[github-actions]

🟢 2025-12-06 13:54:26 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-12-06 13:54:38 UTC Pre-commit check linux-x86_64-relwithdebinfo for 0375fa2 has started.
⚪ 2025-12-06 13:54:56 UTC Artifacts will be uploaded here
⚪ 2025-12-06 13:58:23 UTC ya make is running...
🟡 2025-12-06 15:19:00 UTC Some tests failed, follow the links below. Going to retry failed tests...

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
31140	29819	0	9	1293	19

⚪ 2025-12-06 15:21:25 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-12-06 15:35:23 UTC Tests successful.

Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
991 (only retried tests)	978	0	0	0	13

🟢 2025-12-06 15:35:33 UTC Build successful.
🟢 2025-12-06 15:35:47 UTC ydbd size 2.3 GiB changed* by -64 Bytes, which is <= 0 Bytes vs stable-25-3: OK

ydbd size dash	stable-25-3: 22845bd	merge: 0375fa2	diff	diff %
ydbd size	2 443 670 080 Bytes	2 443 670 016 Bytes	-64 Bytes	-0.000%
ydbd stripped size	522 989 480 Bytes	522 989 416 Bytes	-64 Bytes	-0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[github-actions]

⚪ 2025-12-06 13:55:01 UTC Pre-commit check linux-x86_64-release-asan for 0375fa2 has started.
⚪ 2025-12-06 13:55:17 UTC Artifacts will be uploaded here
⚪ 2025-12-06 13:58:49 UTC ya make is running...
🟡 2025-12-06 16:04:01 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
15628	15160	0	175	270	23

🟢 2025-12-06 16:05:15 UTC Build successful.
🟢 2025-12-06 16:05:46 UTC ydbd size 3.8 GiB changed* by -256 Bytes, which is <= 0 Bytes vs stable-25-3: OK

ydbd size dash	stable-25-3: 22845bd	merge: 0375fa2	diff	diff %
ydbd size	4 067 113 544 Bytes	4 067 113 288 Bytes	-256 Bytes	-0.000%
ydbd stripped size	1 515 153 760 Bytes	1 515 153 632 Bytes	-128 Bytes	-0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}