| commit | f4626c12e4b538f757a73d08f4d86d564175b4f7 | [log] [tgz] |
|---|---|---|
| author | Kees Cook <keescook@chromium.org> | Mon Apr 15 11:28:35 2024 -0700 |
| committer | Kees Cook <keescook@chromium.org> | Mon Apr 15 17:42:43 2024 -0700 |
| tree | e5c0d2ce5e701a2002f40e7cad95d53711d3cf4b | |
| parent | 7fcb91d94e897413c0345bb32ea11293f33efbb1 [diff] |
ubsan: Add awareness of signed integer overflow traps On arm64, UBSAN traps can be decoded from the trap instruction. Add the add, sub, and mul overflow trap codes now that CONFIG_UBSAN_SIGNED_WRAP exists. Seen under clang 19: Internal error: UBSAN: unrecognized failure code: 00000000f2005515 [#1] PREEMPT SMP Reported-by: Nathan Chancellor <nathan@kernel.org> Closes: https://lore.kernel.org/lkml/20240411-fix-ubsan-in-hardening-config-v1-0-e0177c80ffaa@kernel.org Fixes: 557f8c582a9b ("ubsan: Reintroduce signed overflow sanitizer") Tested-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20240415182832.work.932-kees@kernel.org Signed-off-by: Kees Cook <keescook@chromium.org>