Comment # 2 on bug 1193139 from Tom de Vries

(In reply to Borislav Petkov from comment #1)
> Who says that "Saw a #BR!" line? I don't see it in the kernel so maybe glibc?

gcc, libmpx/mpxrt/mpxrt.c:
...
$ find libmpx/ -type f | xargs grep "Saw"
libmpx/mpxrt/mpxrt.c:      __mpxrt_write (VERB_BR, "Saw a #BR! status ");
...