All of lore.kernel.org
 help / color / mirror / Atom feed
From: Dave Hansen <dave.hansen@intel.com>
To: Ingo Molnar <mingo@kernel.org>,
	Dave Hansen <dave.hansen@linux.intel.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	linuxram@us.ibm.com, tglx@linutronix.de, mpe@ellerman.id.au,
	akpm@linux-foundation.org, shuah@kernel.org, shakeelb@google.com
Subject: Re: [PATCH 0/9] [v3] x86, pkeys: two protection keys bug fixes
Date: Mon, 30 Apr 2018 08:30:43 -0700	[thread overview]
Message-ID: <a176ae33-eb01-d275-f372-a33829e865a7@intel.com> (raw)
In-Reply-To: <20180428070553.yjlt22sb6ntcaqnc@gmail.com>

On 04/28/2018 12:05 AM, Ingo Molnar wrote:
> In the above kernel that was missing the PROT_EXEC fix I was repeatedly running 
> the 64-bit and 32-bit testcases as non-root and as root as well, until I got a 
> hang in the middle of a 32-bit test running as root:
> 
>   test  7 PASSED (iteration 19)
>   test  8 PASSED (iteration 19)
>   test  9 PASSED (iteration 19)
> 
>   < test just hangs here >

For the hang, there is a known issue with the use of printf() in the
signal handler and a resulting deadlock.  I *thought* there was a patch
merged to fix this from Ram Pai or one of the other IBM folks.

  parent reply	other threads:[~2018-04-30 15:30 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-27 17:45 [PATCH 0/9] [v3] x86, pkeys: two protection keys bug fixes Dave Hansen
2018-04-27 17:45 ` [PATCH 1/9] x86, pkeys: do not special case protection key 0 Dave Hansen
2018-04-27 17:45   ` Dave Hansen
2018-04-27 17:45 ` [PATCH 2/9] x86, pkeys, selftests: save off 'prot' for allocations Dave Hansen
2018-04-27 17:45 ` [PATCH 3/9] x86, pkeys, selftests: add a test for pkey 0 Dave Hansen
2018-04-27 17:45 ` [PATCH 4/9] x86, pkeys: override pkey when moving away from PROT_EXEC Dave Hansen
2018-04-27 17:45   ` Dave Hansen
2018-04-27 17:45 ` [PATCH 5/9] x86, pkeys, selftests: fix pointer math Dave Hansen
2018-04-27 17:45 ` [PATCH 6/9] x86, pkeys, selftests: fix pkey exhaustion test off-by-one Dave Hansen
2018-04-27 17:45 ` [PATCH 7/9] x86, pkeys, selftests: factor out "instruction page" Dave Hansen
2018-04-27 17:45 ` [PATCH 8/9] x86, pkeys, selftests: add allow faults on unknown keys Dave Hansen
2018-04-27 17:45 ` [PATCH 9/9] x86, pkeys, selftests: add PROT_EXEC test Dave Hansen
2018-04-28  7:05 ` [PATCH 0/9] [v3] x86, pkeys: two protection keys bug fixes Ingo Molnar
2018-04-28  7:15   ` Ingo Molnar
2018-04-28  8:29     ` Ingo Molnar
2018-04-30 15:30   ` Dave Hansen [this message]
2018-04-30 16:28     ` Ram Pai
2018-05-08 22:49   ` Dave Hansen

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=a176ae33-eb01-d275-f372-a33829e865a7@intel.com \
    --to=dave.hansen@intel.com \
    --cc=akpm@linux-foundation.org \
    --cc=dave.hansen@linux.intel.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=linuxram@us.ibm.com \
    --cc=mingo@kernel.org \
    --cc=mpe@ellerman.id.au \
    --cc=shakeelb@google.com \
    --cc=shuah@kernel.org \
    --cc=tglx@linutronix.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.