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Date: Wed, 04 Nov 2020 15:45:44 +0100
From: Florian Weimer <>
To: Catalin Marinas <>
Cc: Szabolcs Nagy <>,  Jeremy Linton
 <>,  Mark Brown <>,,  Mark Rutland <>,  Will
 Deacon <>,  Kees Cook <>,  Salvatore
 Mesoraca <>,  Lennart Poettering
 <>,  Topi Miettinen <>,,,,
Subject: Re: [PATCH 0/4] aarch64: avoid mprotect(PROT_BTI|PROT_EXEC) [BZ

* Catalin Marinas:

> Can the dynamic loader mmap() the main exe again while munmap'ing the
> original one? (sorry if it was already discussed)

No, we don't have a descriptor for that.  /proc may not be mounted, and
using the path stored there has a race condition anyway.

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