LinuxPPC-Dev Archive on lore.kernel.org
 help / color / mirror / Atom feed
From: Sachin Sant <sachinp@linux.ibm.com>
To: Nicholas Piggin <npiggin@gmail.com>
Cc: Haren Myneni <haren@linux.ibm.com>,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH] powerpc/64s: Fix VAS mm use after free
Date: Wed, 7 Jun 2023 16:12:17 +0530	[thread overview]
Message-ID: <4808683A-2BDD-441D-9A9F-D02A58520B7D@linux.ibm.com> (raw)
In-Reply-To: <20230607101024.14559-1-npiggin@gmail.com>



> On 07-Jun-2023, at 3:40 PM, Nicholas Piggin <npiggin@gmail.com> wrote:
> 
> The refcount on mm is dropped before the coprocessor is detached.
> 
> Reported-by: Sachin Sant <sachinp@linux.ibm.com>
> Fixes: 7bc6f71bdff5f ("powerpc/vas: Define and use common vas_window struct")
> Fixes: b22f2d88e435c ("powerpc/pseries/vas: Integrate API with open/close windows")
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
> ---
> How's this for fixing your vas_deallocate_window warning at
> radix_tlb.c:991 ?
> 
> I added a few new warnings in the TLB flush code recently which is
> why these new warns are showing up.
> 

Thanks Nick. This fixes the reported warning.
Nx-gzip as well as mce error inject tests completed successfully.

Tested-by: Sachin Sant <sachinp@linux.ibm.com>

- Sachin

  reply	other threads:[~2023-06-07 10:43 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-06-07 10:10 [PATCH] powerpc/64s: Fix VAS mm use after free Nicholas Piggin
2023-06-07 10:42 ` Sachin Sant [this message]
2023-07-03  5:26 ` Michael Ellerman

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=4808683A-2BDD-441D-9A9F-D02A58520B7D@linux.ibm.com \
    --to=sachinp@linux.ibm.com \
    --cc=haren@linux.ibm.com \
    --cc=linuxppc-dev@lists.ozlabs.org \
    --cc=npiggin@gmail.com \
    /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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox