lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Thu, 13 Aug 2020 07:00:41 -0700 From: Eric Dumazet <edumazet@...gle.com> To: sedat.dilek@...il.com Cc: George Spelvin <lkml@....org>, Amit Klein <aksecurity@...il.com>, "Jason A. Donenfeld" <Jason@...c4.com>, Andy Lutomirski <luto@...nel.org>, Kees Cook <keescook@...omium.org>, Thomas Gleixner <tglx@...utronix.de>, Peter Zijlstra <peterz@...radead.org>, Linus Torvalds <torvalds@...ux-foundation.org>, netdev <netdev@...r.kernel.org>, Willy Tarreau <w@....eu> Subject: Re: [DRAFT PATCH] random32: make prandom_u32() output unpredictable On Thu, Aug 13, 2020 at 1:27 AM Sedat Dilek <sedat.dilek@...il.com> wrote: > > I run a perf session looks like this in my KDE/Plasma desktop-environment: > > [ PERF SESSION ] > > 1016 2020-08-13 09:57:24 echo 1 > /proc/sys/kernel/sched_schedstats > 1017 2020-08-13 09:57:24 echo prandom_u32 >> > /sys/kernel/debug/tracing/set_event > 1018 2020-08-13 09:57:24 echo traceon > > /sys/kernel/debug/tracing/events/random/prandom_u32/trigger > 1019 2020-08-13 09:57:25 echo 1 > /sys/kernel/debug/tracing/events/enable > > 1020 2020-08-13 09:57:32 sysctl -n kernel.sched_schedstats > 1021 2020-08-13 09:57:32 cat /sys/kernel/debug/tracing/events/enable > 1022 2020-08-13 09:57:32 grep prandom_u32 /sys/kernel/debug/tracing/set_event > 1023 2020-08-13 09:57:33 cat > /sys/kernel/debug/tracing/events/random/prandom_u32/trigger > > root# /home/dileks/bin/perf record -a -g -e random:prandom_u32 sleep 5 > To be clear : This "perf record -a -g -e random:prandom_u32 sleep 5" is self sufficient. You have nothing to do before (as reported in your email), this is simply not needed. I am not sure why you added all this irrelevant stuff, this is distracting.
Powered by blists - more mailing lists