Re: [PATCH v8 0/9] MR6: Avoid performance degradation due to vDSO unmapping (BZ#52313)

[Jinoh Kang (＠iamahuman)]

> When running under qemu-user CPU emulation, this can mean we not only remove the vdso from the process being launched (a performance degradation), but also clobber it out from under the qemu-user emulator hosting the wine-preloader process - which is in fact in the midst of a call to mmap that is *using* the vdso, so the emulator then segfaults before returning

I'd call a QEMU bug.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/6#note_2791