CVSROOT: /cvs
Module name: src
Changes by: an...@cvs.openbsd.org 2019/06/20 08:55:22
Modified files:
sys/kern : init_main.c subr_kubsan.c
Log message:
Undefined behavior (UB) can potentially be present anywhere in the
kernel. kubsan reports findings using printf() and assuming that calling
printf() is safe in all contexts can be problematic. Instead, defer
reporting of findings to the systq task queue.
Storage for findings is allocated early in the boot process in order to
catch potential UB during boot. The same findings are reported once the
task queue subsystem has been initialized.
Feedback from kettenis@ and ok mpi@
