heap-use-after-free in a PQ tablet

[Alek5andr-Kotov]

Changelog entry

Issue #30258

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

Changelog category

• Bugfix

Description for reviewers

...

[ydbot]

Run Extra Tests

Run additional tests for this PR. You can customize:

• Test Size: small, medium, large (default: all)
• Test Targets: any directory path (default: ydb/)
• Sanitizers: ASAN, MSAN, TSAN
• Coredumps: enable for debugging (default: off)
• Additional args: custom ya make arguments

[github-actions]

🟢 2025-12-06 09:43:52 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-12-06 09:36:52 UTC Pre-commit check linux-x86_64-relwithdebinfo for 8907e1e has started.
⚪ 2025-12-06 09:37:15 UTC Artifacts will be uploaded here
⚪ 2025-12-06 09:39:22 UTC ya make is running...
🟡 2025-12-06 11:03:29 UTC Some tests failed, follow the links below. Going to retry failed tests...

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
31943	30499	0	2	1415	27

⚪ 2025-12-06 11:03:41 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-12-06 11:22:26 UTC Tests successful.

Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
53 (only retried tests)	37	0	0	0	16

🟢 2025-12-06 11:22:34 UTC Build successful.
🟢 2025-12-06 11:22:58 UTC ydbd size 2.3 GiB changed* by +80 Bytes, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 3fe8372	merge: 8907e1e	diff	diff %
ydbd size	2 466 169 560 Bytes	2 466 169 640 Bytes	+80 Bytes	+0.000%
ydbd stripped size	524 846 144 Bytes	524 846 208 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 09:37:07 UTC Pre-commit check linux-x86_64-release-asan for 8907e1e has started.
⚪ 2025-12-06 09:37:24 UTC Artifacts will be uploaded here
⚪ 2025-12-06 09:39:35 UTC ya make is running...
🟡 2025-12-06 10:45:30 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?
11718	11633	0	70	7	8

🟢 2025-12-06 10:45:39 UTC Build successful.
🟢 2025-12-06 10:46:11 UTC ydbd size 3.8 GiB changed* by -80 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 3fe8372	merge: 8907e1e	diff	diff %
ydbd size	4 127 824 864 Bytes	4 127 824 784 Bytes	-80 Bytes	-0.000%
ydbd stripped size	1 532 696 344 Bytes	1 532 696 280 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}

[ydbot]

Backport

To backport this PR, click the button next to the target branch and then click "Run workflow" in the Run Actions UI.

Branch	Run
stable-25-2, stable-25-2-1, stable-25-3, stable-25-3-1
stable-25-3, stable-25-3-1
stable-25-3

[ydbot]

Backport results:

• stable-25-3: PR [Backport stable-25-3] PR #30257: heap-use-after-free in a PQ tablet #30259
• stable-25-3-1: PR [Backport stable-25-3-1] PR #30257: heap-use-after-free in a PQ tablet #30260

workflow run