From: Geert Uytterhoeven <geert@linux-m68k.org>
To: David Laight <David.Laight@aculab.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
Petr Mladek <pmladek@suse.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
christophe leroy <christophe.leroy@c-s.fr>,
Steven Rostedt <rostedt@goodmis.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
"Tobin C . Harding" <me@tobin.cc>, Michal Hocko <mhocko@suse.cz>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Michael Ellerman <mpe@ellerman.id.au>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
Russell Currey <ruscur@russell.cc>,
Stephen Rothwell <sfr@ozlabs.org>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
Martin Schwidefsky <schwidefsky@de.ibm.com>
Subject: Re: [PATCH] vsprintf: Do not break early boot with probing addresses
Date: Tue, 14 May 2019 11:02:17 +0200 [thread overview]
Message-ID: <CAMuHMdXaMObq9h2Sb49PW1-HUysPeaWXB7wJmKFz=xLmSoUDZg@mail.gmail.com> (raw)
In-Reply-To: <45348cf615fe40d383c1a25688d4a88f@AcuMS.aculab.com>
On Tue, May 14, 2019 at 10:29 AM David Laight <David.Laight@aculab.com> wrote:
> > And I like Steven's "(fault)" idea.
> > How about this:
> >
> > if ptr < PAGE_SIZE -> "(null)"
> > if IS_ERR_VALUE(ptr) -> "(fault)"
> >
> > -ss
>
> Or:
> if (ptr < PAGE_SIZE)
> return ptr ? "(null+)" : "(null)";
> if IS_ERR_VALUE(ptr)
> return "(errno)"
Do we care about the value? "(-E%u)"?
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
WARNING: multiple messages have this Message-ID (diff)
From: Geert Uytterhoeven <geert@linux-m68k.org>
To: David Laight <David.Laight@aculab.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
Petr Mladek <pmladek@suse.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
christophe leroy <christophe.leroy@c-s.fr>,
Steven Rostedt <rostedt@goodmis.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
"Tobin C . Harding" <me@tobin.cc>, Michal Hocko <mhocko@suse.cz>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Michael Ellerman <mpe@ellerman.id.au>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
Russell Currey <ruscur@russell.cc>,
Stephen Rothwell <sfr@ozlabs.org>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>
Subject: Re: [PATCH] vsprintf: Do not break early boot with probing addresses
Date: Tue, 14 May 2019 11:02:17 +0200 [thread overview]
Message-ID: <CAMuHMdXaMObq9h2Sb49PW1-HUysPeaWXB7wJmKFz=xLmSoUDZg@mail.gmail.com> (raw)
In-Reply-To: <45348cf615fe40d383c1a25688d4a88f@AcuMS.aculab.com>
On Tue, May 14, 2019 at 10:29 AM David Laight <David.Laight@aculab.com> wrote:
> > And I like Steven's "(fault)" idea.
> > How about this:
> >
> > if ptr < PAGE_SIZE -> "(null)"
> > if IS_ERR_VALUE(ptr) -> "(fault)"
> >
> > -ss
>
> Or:
> if (ptr < PAGE_SIZE)
> return ptr ? "(null+)" : "(null)";
> if IS_ERR_VALUE(ptr)
> return "(errno)"
Do we care about the value? "(-E%u)"?
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
WARNING: multiple messages have this Message-ID (diff)
From: Geert Uytterhoeven <geert@linux-m68k.org>
To: David Laight <David.Laight@aculab.com>
Cc: Petr Mladek <pmladek@suse.com>,
"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Michal Hocko <mhocko@suse.cz>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Stephen Rothwell <sfr@ozlabs.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
"Tobin C . Harding" <me@tobin.cc>
Subject: Re: [PATCH] vsprintf: Do not break early boot with probing addresses
Date: Tue, 14 May 2019 11:02:17 +0200 [thread overview]
Message-ID: <CAMuHMdXaMObq9h2Sb49PW1-HUysPeaWXB7wJmKFz=xLmSoUDZg@mail.gmail.com> (raw)
In-Reply-To: <45348cf615fe40d383c1a25688d4a88f@AcuMS.aculab.com>
On Tue, May 14, 2019 at 10:29 AM David Laight <David.Laight@aculab.com> wrote:
> > And I like Steven's "(fault)" idea.
> > How about this:
> >
> > if ptr < PAGE_SIZE -> "(null)"
> > if IS_ERR_VALUE(ptr) -> "(fault)"
> >
> > -ss
>
> Or:
> if (ptr < PAGE_SIZE)
> return ptr ? "(null+)" : "(null)";
> if IS_ERR_VALUE(ptr)
> return "(errno)"
Do we care about the value? "(-E%u)"?
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
next prev parent reply other threads:[~2019-05-14 9:02 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-09 12:19 [PATCH] vsprintf: Do not break early boot with probing addresses Petr Mladek
2019-05-09 12:19 ` Petr Mladek
2019-05-09 13:05 ` Andy Shevchenko
2019-05-09 13:05 ` Andy Shevchenko
2019-05-09 13:13 ` Steven Rostedt
2019-05-09 13:13 ` Steven Rostedt
2019-05-09 14:06 ` Petr Mladek
2019-05-09 14:06 ` Petr Mladek
2019-05-09 13:38 ` Michal Suchánek
2019-05-09 13:38 ` Michal Suchánek
2019-05-09 13:46 ` David Laight
2019-05-09 13:46 ` David Laight
2019-05-10 10:21 ` Michael Ellerman
2019-05-10 10:21 ` Michael Ellerman
2019-05-10 10:21 ` Michael Ellerman
2019-05-10 4:32 ` Sergey Senozhatsky
2019-05-10 4:32 ` Sergey Senozhatsky
2019-05-10 4:47 ` Linus Torvalds
2019-05-10 5:07 ` Sergey Senozhatsky
2019-05-10 5:07 ` Sergey Senozhatsky
2019-05-10 6:41 ` Michael Ellerman
2019-05-10 6:41 ` Michael Ellerman
2019-05-10 6:41 ` Michael Ellerman
2019-05-10 6:41 ` Michael Ellerman
2019-05-10 8:06 ` Petr Mladek
2019-05-10 8:06 ` Petr Mladek
2019-05-10 8:16 ` Sergey Senozhatsky
2019-05-10 8:16 ` Sergey Senozhatsky
2019-05-10 8:42 ` Petr Mladek
2019-05-10 8:42 ` Petr Mladek
2019-05-10 8:51 ` Sergey Senozhatsky
2019-05-10 8:51 ` Sergey Senozhatsky
2019-05-10 14:49 ` Petr Mladek
2019-05-10 14:49 ` Petr Mladek
2019-05-10 16:24 ` Steven Rostedt
2019-05-10 16:24 ` Steven Rostedt
2019-05-10 16:32 ` Martin Schwidefsky
2019-05-10 16:32 ` Martin Schwidefsky
2019-05-10 16:40 ` Steven Rostedt
2019-05-10 16:40 ` Steven Rostedt
2019-05-10 16:45 ` Martin Schwidefsky
2019-05-10 16:45 ` Martin Schwidefsky
2019-05-13 12:24 ` Petr Mladek
2019-05-13 12:24 ` Petr Mladek
2019-05-10 16:41 ` Andy Shevchenko
2019-05-10 16:41 ` Andy Shevchenko
2019-05-10 17:35 ` christophe leroy
2019-05-10 17:35 ` christophe leroy
2019-05-13 8:52 ` David Laight
2019-05-13 8:52 ` David Laight
2019-05-13 9:13 ` Andy Shevchenko
2019-05-13 9:13 ` Andy Shevchenko
2019-05-13 9:13 ` Andy Shevchenko
2019-05-13 12:42 ` Petr Mladek
2019-05-13 12:42 ` Petr Mladek
2019-05-13 12:42 ` Petr Mladek
2019-05-13 14:15 ` Steven Rostedt
2019-05-13 14:15 ` Steven Rostedt
2019-05-13 14:15 ` Steven Rostedt
2019-05-14 2:07 ` Sergey Senozhatsky
2019-05-14 2:07 ` Sergey Senozhatsky
2019-05-14 2:07 ` Sergey Senozhatsky
2019-05-14 2:25 ` Sergey Senozhatsky
2019-05-14 2:25 ` Sergey Senozhatsky
2019-05-14 2:25 ` Sergey Senozhatsky
2019-05-14 8:28 ` David Laight
2019-05-14 8:28 ` David Laight
2019-05-14 8:28 ` David Laight
2019-05-14 9:02 ` Geert Uytterhoeven [this message]
2019-05-14 9:02 ` Geert Uytterhoeven
2019-05-14 9:02 ` Geert Uytterhoeven
2019-05-14 18:37 ` Steven Rostedt
2019-05-14 18:37 ` Steven Rostedt
2019-05-14 18:37 ` Steven Rostedt
2019-05-14 19:13 ` Geert Uytterhoeven
2019-05-14 19:13 ` Geert Uytterhoeven
2019-05-14 19:13 ` Geert Uytterhoeven
2019-05-14 19:35 ` Steven Rostedt
2019-05-14 19:35 ` Steven Rostedt
2019-05-14 19:35 ` Steven Rostedt
2019-05-15 7:23 ` Geert Uytterhoeven
2019-05-15 7:23 ` Geert Uytterhoeven
2019-05-15 7:23 ` Geert Uytterhoeven
2019-05-15 7:53 ` Petr Mladek
2019-05-15 7:53 ` Petr Mladek
2019-05-15 7:53 ` Petr Mladek
2019-05-15 6:21 ` Sergey Senozhatsky
2019-05-15 6:21 ` Sergey Senozhatsky
2019-05-15 6:21 ` Sergey Senozhatsky
2019-05-15 7:35 ` Petr Mladek
2019-05-15 7:35 ` Petr Mladek
2019-05-15 7:35 ` Petr Mladek
2019-05-15 9:00 ` David Laight
2019-05-15 9:00 ` David Laight
2019-05-15 9:00 ` David Laight
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