Re: [PATCH 4/5] kprobes: Do not expose probe addresses to non-CAP_SYSLOG

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Subject: Re: [PATCH 4/5] kprobes: Do not expose probe addresses to non-CAP_SYSLOG
From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Date: Sun, 5 Jul 2020 13:10:54 -0700
Cc: Dominik Czarnota <dominik.czarnota@xxxxxxxxxxxxxxx>, stable <stable@xxxxxxxxxxxxxxx>, Jessica Yu <jeyu@xxxxxxxxxx>, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Alexei Starovoitov <ast@xxxxxxxxxx>, Daniel Borkmann <daniel@xxxxxxxxxxxxx>, Martin KaFai Lau <kafai@xxxxxx>, Song Liu <songliubraving@xxxxxx>, Yonghong Song <yhs@xxxxxx>, Andrii Nakryiko <andriin@xxxxxx>, KP Singh <kpsingh@xxxxxxxxxxxx>, "Naveen N. Rao" <naveen.n.rao@xxxxxxxxxxxxx>, Anil S Keshavamurthy <anil.s.keshavamurthy@xxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, Masami Hiramatsu <mhiramat@xxxxxxxxxx>, Jakub Kicinski <kuba@xxxxxxxxxx>, "Steven Rostedt (VMware)" <rostedt@xxxxxxxxxxx>, Dmitry Safonov <0x7f454c46@xxxxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Alexey Dobriyan <adobriyan@xxxxxxxxx>, Marc Zyngier <maz@xxxxxxxxxx>, Masahiro Yamada <masahiroy@xxxxxxxxxx>, Al Viro <viro@xxxxxxxxxxxxxxxxxx>, Matteo Croce <mcroce@xxxxxxxxxx>, Edward Cree <ecree@xxxxxxxxxxxxxx>, Nicolas Dichtel <nicolas.dichtel@xxxxxxxxx>, Thomas Richter <tmricht@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Netdev <netdev@xxxxxxxxxxxxxxx>, bpf <bpf@xxxxxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>
In-reply-to: <202007030848.265EA58@keescook>

On Fri, Jul 3, 2020 at 8:50 AM Kees Cook <keescook@xxxxxxxxxxxx> wrote:
>
> With 67 kthreads on a booted system, this patch does not immediately
> blow up...

Did you try making read/write inc/dec that thing too? Or does that
just blow up with tons of warnings?

                 Linus

Follow-Ups:
- Re: [PATCH 4/5] kprobes: Do not expose probe addresses to non-CAP_SYSLOG
  - From: Kees Cook

References:
- [PATCH 4/5] kprobes: Do not expose probe addresses to non-CAP_SYSLOG
  - From: Kees Cook
- Re: [PATCH 4/5] kprobes: Do not expose probe addresses to non-CAP_SYSLOG
  - From: Linus Torvalds
- Re: [PATCH 4/5] kprobes: Do not expose probe addresses to non-CAP_SYSLOG
  - From: Kees Cook

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