* Re: [PATCH v2] perf unwind: handle allocation failure in libdw__get_entries()
[not found] <20260818144837.741469-1-triet.hoang.dev@gmail.com>
@ 2026-08-18 19:24 ` Markus Elfring
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From: Markus Elfring @ 2026-08-18 19:24 UTC (permalink / raw)
To: Triet Hoang, linux-perf-users, Arnaldo Carvalho de Melo, Ian Rogers
Cc: sashiko-bot, sashiko-reviews, LKML, kernel-janitors,
Aditya Bodkhe, Adrian Hunter, Albert Ou, Alexandre Ghiti,
Andi Kleen, Athira Rajeev, Chun-Tse Shao, Dmitriy Vyukov,
Dr. David Alan Gilbert, Guo Ren, Haibo Xu, Howard Chu,
Ingo Molnar, James Clark, Jiri Olsa, John Garry,
Krzysztof Łopatowski, Leo Yan, Mark Wielaard, Namhyung Kim,
Palmer Dabbelt, Paul Walmsley, Peter Zijlstra,
Sergei Trofimovich, Shimin Guo, Stephen Brennan, Thomas Falcon,
Will Deacon
> Check the return value of zalloc() before dereferencing the allocated
> dwfl_ui_ti structure.
>
> Return -ENOMEM when the allocation fails to avoid a NULL pointer
> dereference.
How do you think about to add any tags (like “Fixes” and “Cc”) accordingly?
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v7.2#n145
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/stable-kernel-rules.rst?h=v7.2#n34
https://elixir.bootlin.com/linux/v7.2-rc7/source/tools/perf/util/unwind-libdw.c#L342-L447
Regards,
Markus
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