Re: [PATCH bpf-next] bpf: Make trampolines W^X
From: Peter Zijlstra <peterz@infradead.org>
Date: 2020-01-06 08:23:40
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On Sat, Jan 04, 2020 at 09:49:10AM +0900, Andy Lutomirski wrote:
quoted
- Mark memory as non executable (set_memory_nx). While module_alloc for x86 allocates the memory as PAGE_KERNEL and not PAGE_KERNEL_EXEC, not all implementations of module_alloc do soHow about fixing this instead?
We only care about STRICT_MODULE_RMW (iow, arm, arm64, s390, x86). Of those only s390 seems to be 'off'.