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Re: [PATCH v2] fs/proc: Don't expose absolute kernel addresses via wchan

From Thomas Gleixner <tglx@linutronix.de>
Newsgroups linux.kernel
Subject Re: [PATCH v2] fs/proc: Don't expose absolute kernel addresses via wchan
Date 2015-09-30 23:40 +0200
Message-ID <qexgu-oR-27@gated-at.bofh.it> (permalink)
References (4 earlier) <qe7Fp-5O1-29@gated-at.bofh.it> <qejQd-6nP-3@gated-at.bofh.it> <qek9B-6Kx-39@gated-at.bofh.it> <qeq5l-6MN-41@gated-at.bofh.it> <qex6O-aB-5@gated-at.bofh.it>
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On Wed, 30 Sep 2015, Kees Cook wrote:
> Probably should also update Documentation/filesystems/proc.txt with
> something like:
> 
> --- a/Documentation/filesystems/proc.txt
> +++ b/Documentation/filesystems/proc.txt
> @@ -310,7 +310,7 @@ Table 1-4: Contents of the stat files (as of 2.6.30-rc7)
>    blocked       bitmap of blocked signals
>    sigign        bitmap of ignored signals
>    sigcatch      bitmap of caught signals
> -  wchan         address where process went to sleep
> +  0             (place holder, was wchan, see /proc/PID/wchan instead)
>    0             (place holder)
>    0             (place holder)
>    exit_signal   signal to send to parent thread on exit

Good catch!

Thanks,

	tglx
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[PATCH] arch/x86: fix out-of-bounds in get_wchan() Dmitry Vyukov <dvyukov@google.com> - 2015-09-28 11:10 +0200
  Re: [PATCH] arch/x86: fix out-of-bounds in get_wchan() Borislav Petkov <bp@alien8.de> - 2015-09-28 11:40 +0200
    Re: [PATCH] arch/x86: fix out-of-bounds in get_wchan() Dmitry Vyukov <dvyukov@google.com> - 2015-09-28 11:50 +0200
      Re: [PATCH] arch/x86: fix out-of-bounds in get_wchan() Borislav Petkov <bp@alien8.de> - 2015-09-28 12:30 +0200
        Re: [PATCH] arch/x86: fix out-of-bounds in get_wchan() Dmitry Vyukov <dvyukov@google.com> - 2015-09-28 12:40 +0200
          Re: [PATCH] arch/x86: fix out-of-bounds in get_wchan() Borislav Petkov <bp@alien8.de> - 2015-09-28 13:00 +0200
    Re: [PATCH] arch/x86: fix out-of-bounds in get_wchan() Dmitry Vyukov <dvyukov@google.com> - 2015-09-28 12:00 +0200
      Re: [PATCH] arch/x86: fix out-of-bounds in get_wchan() Borislav Petkov <bp@alien8.de> - 2015-09-28 12:40 +0200
  Re: [PATCH] arch/x86: fix out-of-bounds in get_wchan() Andrey Ryabinin <ryabinin.a.a@gmail.com> - 2015-09-28 17:50 +0200
    Re: [PATCH] arch/x86: fix out-of-bounds in get_wchan() Dmitry Vyukov <dvyukov@google.com> - 2015-09-28 18:10 +0200
      Re: [PATCH] arch/x86: fix out-of-bounds in get_wchan() Thomas Gleixner <tglx@linutronix.de> - 2015-09-28 18:40 +0200
        Re: [PATCH] arch/x86: fix out-of-bounds in get_wchan() Andy Lutomirski <luto@amacapital.net> - 2015-09-29 20:20 +0200
          Re: [PATCH] arch/x86: fix out-of-bounds in get_wchan() Andy Lutomirski <luto@amacapital.net> - 2015-09-29 20:40 +0200
            Re: [PATCH] arch/x86: fix out-of-bounds in get_wchan() Borislav Petkov <bp@alien8.de> - 2015-09-29 20:50 +0200
          [PATCH] fs/proc: Don't expose absolute kernel addresses via wchan Ingo Molnar <mingo@kernel.org> - 2015-09-30 09:20 +0200
            Re: [PATCH] fs/proc: Don't expose absolute kernel addresses via  wchan Thomas Gleixner <tglx@linutronix.de> - 2015-09-30 09:40 +0200
              [PATCH v2] fs/proc: Don't expose absolute kernel addresses via wchan Ingo Molnar <mingo@kernel.org> - 2015-09-30 16:00 +0200
                Re: [PATCH v2] fs/proc: Don't expose absolute kernel addresses via  wchan Thomas Gleixner <tglx@linutronix.de> - 2015-09-30 22:40 +0200
                Re: [PATCH v2] fs/proc: Don't expose absolute kernel addresses via wchan Kees Cook <keescook@chromium.org> - 2015-09-30 23:30 +0200
                Re: [PATCH v2] fs/proc: Don't expose absolute kernel addresses via  wchan Thomas Gleixner <tglx@linutronix.de> - 2015-09-30 23:40 +0200
                [PATCH v3] fs/proc, core/debug: Don't expose absolute kernel  addresses via wchan Ingo Molnar <mingo@kernel.org> - 2015-10-01 10:00 +0200
                Re: [PATCH v3] fs/proc, core/debug: Don't expose absolute kernel  addresses via wchan Andrey Ryabinin <ryabinin.a.a@gmail.com> - 2015-10-01 11:00 +0200
                Re: [PATCH v3] fs/proc, core/debug: Don't expose absolute kernel  addresses via wchan Ingo Molnar <mingo@kernel.org> - 2015-10-01 11:30 +0200
                Re: [PATCH v3] fs/proc, core/debug: Don't expose absolute kernel  addresses via wchan Andrey Ryabinin <ryabinin.a.a@gmail.com> - 2015-10-01 12:20 +0200
                Re: [PATCH v3] fs/proc, core/debug: Don't expose absolute kernel  addresses via wchan Ingo Molnar <mingo@kernel.org> - 2015-10-01 12:40 +0200
                Re: [PATCH v3] fs/proc, core/debug: Don't expose absolute kernel  addresses via wchan Andrey Ryabinin <ryabinin.a.a@gmail.com> - 2015-10-01 12:50 +0200
                [PATCH v5] fs/proc, core/debug: Don't expose absolute kernel  addresses via wchan Ingo Molnar <mingo@kernel.org> - 2015-10-01 13:00 +0200
                [PATCH v4] fs/proc, core/debug: Don't expose absolute kernel  addresses via wchan Ingo Molnar <mingo@kernel.org> - 2015-10-01 11:40 +0200
                [tip:core/debug] fs/proc, core/debug: Don'  t expose absolute kernel addresses via wchan tip-bot for Ingo Molnar <tipbot@zytor.com> - 2015-10-01 15:00 +0200
          Re: [PATCH] arch/x86: fix out-of-bounds in get_wchan() Thomas Gleixner <tglx@linutronix.de> - 2015-09-30 10:10 +0200

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