* Question: ThreadSanitizer support in QEMU user-mode
@ 2025-09-10 6:45 Arkadiusz Marud
2025-09-10 8:43 ` Alex Bennée
0 siblings, 1 reply; 2+ messages in thread
From: Arkadiusz Marud @ 2025-09-10 6:45 UTC (permalink / raw)
To: qemu-devel
Hi all,
I am experimenting with running a C++ project built with ThreadSanitizer (TSAN) under QEMU.
The documentation describes TSAN usage in system-mode (qemu-system-x86_64) with --enable-tsan,
but I couldn’t find any reference to support in user-mode (qemu-x86_64).
Does QEMU user-mode support running TSAN-instrumented binaries, or is TSAN available only in system-mode builds?
Thanks in advance for clarification,
Arek
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Question: ThreadSanitizer support in QEMU user-mode
2025-09-10 6:45 Question: ThreadSanitizer support in QEMU user-mode Arkadiusz Marud
@ 2025-09-10 8:43 ` Alex Bennée
0 siblings, 0 replies; 2+ messages in thread
From: Alex Bennée @ 2025-09-10 8:43 UTC (permalink / raw)
To: Arkadiusz Marud; +Cc: qemu-devel
Arkadiusz Marud <a.marud@post.pl> writes:
> Hi all,
>
> I am experimenting with running a C++ project built with ThreadSanitizer (TSAN) under QEMU.
> The documentation describes TSAN usage in system-mode (qemu-system-x86_64) with --enable-tsan,
> but I couldn’t find any reference to support in user-mode (qemu-x86_64).
>
> Does QEMU user-mode support running TSAN-instrumented binaries, or is
> TSAN available only in system-mode builds?
I don't think the compiler cares and our TSAN helpers are mode agnostic.
However there may be some fork/thread things that it can't track.
>
> Thanks in advance for clarification,
> Arek
--
Alex Bennée
Virtualisation Tech Lead @ Linaro
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