Re: [PATCH v11 25/25] x86/cet/shstk: Add arch_prctl functions for shadow stack
From: Florian Weimer <hidden>
Date: 2020-08-28 06:24:24
Also in:
linux-arch, linux-doc, linux-mm, lkml
Possibly related (same subject, not in this thread)
- 2020-09-16 · Re: [PATCH v11 25/25] x86/cet/shstk: Add arch_prctl functions for shadow stack · Andy Lutomirski <luto@kernel.org>
- 2020-09-16 · Re: [PATCH v11 25/25] x86/cet/shstk: Add arch_prctl functions for shadow stack · Yu, Yu-cheng <hidden>
- 2020-09-14 · Re: [PATCH v11 25/25] x86/cet/shstk: Add arch_prctl functions for shadow stack · Dave Hansen <hidden>
- 2020-09-11 · Re: [PATCH v11 25/25] x86/cet/shstk: Add arch_prctl functions for shadow stack · Yu-cheng Yu <hidden>
- 2020-09-10 · Re: [PATCH v11 25/25] x86/cet/shstk: Add arch_prctl functions for shadow stack · Yu, Yu-cheng <hidden>
* H. J. Lu:
Can you think of ANY issues of passing more arguments to arch_prctl?
On x32, the glibc arch_prctl system call wrapper only passes two arguments to the kernel, and applications have no way of detecting that. musl only passes two arguments on all architectures. It happens to work anyway with default compiler flags, but that's an accident. Thanks, Florian