Messages in this thread |  | | From | Dmitry Vyukov <> | Date | Tue, 17 Dec 2019 08:54:34 +0100 | Subject | Re: [PATCH] kconfig: Add kernel config option for fuzz testing. |
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On Tue, Dec 17, 2019 at 6:12 AM Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> wrote: > > On (19/12/16 18:59), Tetsuo Handa wrote: > [..] > > +++ b/kernel/printk/printk.c > > @@ -1198,6 +1198,14 @@ MODULE_PARM_DESC(ignore_loglevel, > > > > static bool suppress_message_printing(int level) > > { > > +#ifdef CONFIG_KERNEL_BUILT_FOR_FUZZ_TESTING > > + /* > > + * Changing console_loglevel causes "no output". But ignoring > > + * console_loglevel is easier than preventing change of > > + * console_loglevel. > > + */ > > + return (level >= CONSOLE_LOGLEVEL_DEFAULT && !ignore_loglevel); > > +#endif > > return (level >= console_loglevel && !ignore_loglevel); > > } > > Can you fuzz test with `ignore_loglevel'?
We can set ignore_loglevel in syzbot configs, but won't it then print everything including verbose debug output?
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