Hi! After a private conversation with an Arm engineer, it seems like there is no real "correct" behavior, i mean there is no default behavior among different architectures. In the end, arm64 shows just a different behavior from x86_64. Well, it seems like x86_64 is doing something different from other archs here indeed: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/x86/kernel/process_64.c#n669 Given this is not a bug and there is no clear way to improve the situation, I consider this thread somewhat solved (I only desired to understand what was happening, and now I got it). Thanks everyone! Federico
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