Re: [PATCH] security: Restrict CONFIG_ZERO_CALL_USED_REGS to gcc or clang > 15.0.6

On Wed, 14 Dec 2022 16:26:03 -0700, Nathan Chancellor wrote:

A bad bug in clang's implementation of -fzero-call-used-regs can result in NULL pointer dereferences (see the links above the check for more information). Restrict CONFIG_CC_HAS_ZERO_CALL_USED_REGS to either a supported GCC version or a clang newer than 15.0.6, which will catch both a theoretical 15.0.7 and the upcoming 16.0.0, which will both have the bug fixed.

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Applied to for-next/hardening, thanks! (And I'll send it for v6.2-rc1 too.)

[1/1] security: Restrict CONFIG_ZERO_CALL_USED_REGS to gcc or clang > 15.0.6 https://git.kernel.org/kees/c/d6a9fb87e9d1