On 29. Oct 2024, at 15:00, Jan Hendrik Farr wrote: > > This patch disables __counted_by for clang versions < 19.1.3 because > of the two issues listed below. It does this by introducing > CONFIG_CC_HAS_COUNTED_BY. > > 1. clang < 19.1.2 has a bug that can lead to __bdos returning 0: > https://github.com/llvm/llvm-project/pull/110497 > > 2. clang < 19.1.3 has a bug that can lead to __bdos being off by 4: > https://github.com/llvm/llvm-project/pull/112636 > > Fixes: c8248faf3ca2 ("Compiler Attributes: counted_by: Adjust name and identifier expansion") > Cc: stable@xxxxxxxxxxxxxxx # 6.6.x: 16c31dd7fdf6: Compiler Attributes: counted_by: bump min gcc version > Cc: stable@xxxxxxxxxxxxxxx # 6.6.x: 2993eb7a8d34: Compiler Attributes: counted_by: fixup clang URL > Cc: stable@xxxxxxxxxxxxxxx # 6.6.x: 231dc3f0c936: lkdtm/bugs: Improve warning message for compilers without counted_by support > Cc: stable@xxxxxxxxxxxxxxx # 6.6.x > Reported-by: Nathan Chancellor <nathan@xxxxxxxxxx> > Closes: https://lore.kernel.org/all/20240913164630.GA4091534@thelio-3990X/ > Reported-by: kernel test robot <oliver.sang@xxxxxxxxx> > Closes: https://lore.kernel.org/oe-lkp/202409260949.a1254989-oliver.sang@xxxxxxxxx > Link: https://lore.kernel.org/all/Zw8iawAF5W2uzGuh@archlinux/T/#m204c09f63c076586a02d194b87dffc7e81b8de7b > Suggested-by: Nathan Chancellor <nathan@xxxxxxxxxx> > Signed-off-by: Jan Hendrik Farr <kernel@xxxxxxxx> > Reviewed-by: Nathan Chancellor <nathan@xxxxxxxxxx> > Tested-by: Nathan Chancellor <nathan@xxxxxxxxxx> > Reviewed-by: Miguel Ojeda <ojeda@xxxxxxxxxx> Thanks for fixing this and your work on the Clang issues. Feel free to add: Reviewed-by: Thorsten Blum <thorsten.blum@xxxxxxxxx>
