linux-kernel - [PATCH 0/1] x86/stacktrace: Fix userstacktrace access

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 linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20190722083216.16192-1-devel@etsukata.com>
Date:   Mon, 22 Jul 2019 17:32:15 +0900
From:   Eiichi Tsukata <devel@...ukata.com>
To:     mhiramat@...nel.org
Cc:     juri.lelli@...il.com, linux-kernel@...r.kernel.org,
        mingo@...nel.org, peterz@...radead.org, rostedt@...dmis.org,
        tglx@...utronix.de, torvalds@...ux-foundation.org,
        williams@...hat.com, Eiichi Tsukata <devel@...ukata.com>
Subject: [PATCH 0/1] x86/stacktrace: Fix userstacktrace access_ok() WARNING in irq events

Hello

I also hit the same WARNING previously repored by Juri.

Hiramatsu san's patch looks good to me but I found that perf and
oprofile code do the similar thing by just directly calling
__range_not_ok().

  perf: perf_callchain_user()@arch/x86/events/core.c
  oprofile: dump_user_backtrace()@arch/x86/oprofile/backtrace.c

So for simplicity, I wrote a patch to fix the warning as other
codes do.

Ideally, we should merge these similar stacktrace codes(perf, ftrace,
oprofile) into one, but this time I made the minimum fix.

Eiichi Tsukata (1):
  x86/stacktrace: Fix userstacktrace access_ok() WARNING in irq events

 arch/x86/kernel/stacktrace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
2.21.0