On Tue, Sep 10, 2019 at 01:05:39AM +0900, Sergey Senozhatsky wrote: > On (08/20/19 09:47), Kees Cook wrote: > [..] > > @@ -181,6 +181,15 @@ enum bug_trap_type report_bug(unsigned long bugaddr, > > struct pt_regs *regs) > > } > > } > > > > + /* > > + * BUG() and WARN_ON() families don't print a custom debug message > > + * before triggering the exception handler, so we must add the > > + * "cut here" line now. WARN() issues its own "cut here" before the > > + * extra debugging message it writes before triggering the handler. > > + */ > > + if ((bug->flags & BUGFLAG_NO_CUT_HERE) == 0) > > + printk(KERN_DEFAULT CUT_HERE); > > Shouldn't this be pr_warn() or pr_crit()?
The pr_* helpers here would (potentially) add unwanted prefixes, so those aren't used. KERN_DEFAULT is used here because that's how it's always been printed. I didn't want to change that for this refactoring work. I'm not opposed to it, generally speaking, though. :) -- Kees Cook
