Re: [PATCH] arm64: Support Clang UBSAN trap codes for better reporting
From: John Stultz <jstultz@google.com>
Date: 2023-02-02 22:49:07
Also in:
linux-hardening, lkml, llvm
On Thu, Feb 2, 2023 at 2:37 PM Kees Cook [off-list ref] wrote:
On arm64, Clang encodes the UBSAN check type in the esr. Extract this and actually report UBSAN traps with some specificity when building with CONFIG_UBSAN_TRAP. Before: Internal error: BRK handler: 00000000f20003e8 [#1] PREEMPT SMP After: Internal error: UBSAN: shift out of bounds: 00000000f2005514 [#1] PREEMPT SMP
This is really great ! When I brought up the opaque error messages just a few hours ago, I didn't imagine you'd have a solution so quickly! I really appreciate your lightning fast effort here! Really, thanks so much! I think this will have a big impact for folks running into these new bug catchers. -john _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel