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From: Pedro Falcato <pedro.falcato@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>,
	"Liam R. Howlett" <Liam.Howlett@oracle.com>,
	 Vlastimil Babka <vbabka@suse.cz>,
	Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
	 Shuah Khan <shuah@kernel.org>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	 linux-kselftest@vger.kernel.org, jeffxu@chromium.org,
	oliver.sang@intel.com,  torvalds@linux-foundation.org,
	Michael Ellerman <mpe@ellerman.id.au>,
	 Kees Cook <kees@kernel.org>
Subject: Re: [PATCH v3 7/7] selftests/mm: add more mseal traversal tests
Date: Sun, 18 Aug 2024 07:36:26 +0100	[thread overview]
Message-ID: <CAKbZUD1dA2q9Yv_Z0S4SgvddHxnR9KZddYHAbMLsV+dt+bf8dg@mail.gmail.com> (raw)
In-Reply-To: <20240817-mseal-depessimize-v3-7-d8d2e037df30@gmail.com>

On Sat, Aug 17, 2024 at 1:18 AM Pedro Falcato <pedro.falcato@gmail.com> wrote:
> @@ -983,6 +1019,41 @@ static void test_seal_munmap_vma_with_gap(bool seal)
>         REPORT_TEST_PASS();
>  }
>
> +static void test_seal_munmap_partial_across_vmas(bool seal)
> +{
> +       void *ptr;
> +       unsigned long page_size = getpagesize();
> +       unsigned long size = 2 * page_size;
> +       int ret;
> +       int prot;
> +
> +       /*
> +        * Check if a partial mseal (that results in two vmas) works correctly.
> +        * It might unmap the first, but it'll never unmap the second (msealed) vma.
> +        */

Bah, obviously this comment isn't true, munmap is never partial.
I'll change this locally for v4 if there ends up being one.

-- 
Pedro


  reply	other threads:[~2024-08-18  6:36 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-08-17  0:18 [PATCH v3 0/7] mm: Optimize mseal checks Pedro Falcato
2024-08-17  0:18 ` [PATCH v3 1/7] mm: Move can_modify_vma to mm/vma.h Pedro Falcato
2024-08-19 20:15   ` Liam R. Howlett
2024-08-19 21:00     ` Pedro Falcato
2024-08-21  6:31   ` Lorenzo Stoakes
2024-08-17  0:18 ` [PATCH v3 2/7] mm/munmap: Replace can_modify_mm with can_modify_vma Pedro Falcato
2024-08-19 20:22   ` Liam R. Howlett
2024-08-21  6:40   ` Lorenzo Stoakes
2024-08-21 16:15   ` Jeff Xu
2024-08-21 16:23     ` Pedro Falcato
2024-08-21 16:33       ` Jeff Xu
2024-08-21 17:02         ` Lorenzo Stoakes
2024-08-21 18:25         ` Liam R. Howlett
2024-08-21 17:00     ` Lorenzo Stoakes
2024-08-17  0:18 ` [PATCH v3 3/7] mm/mprotect: " Pedro Falcato
2024-08-19 20:33   ` Liam R. Howlett
2024-08-21  6:51   ` Lorenzo Stoakes
2024-08-17  0:18 ` [PATCH v3 4/7] mm/mremap: " Pedro Falcato
2024-08-19 20:34   ` Liam R. Howlett
2024-08-21  6:53   ` Lorenzo Stoakes
2024-08-17  0:18 ` [PATCH v3 5/7] mseal: Replace can_modify_mm_madv with a vma variant Pedro Falcato
2024-08-19 20:32   ` Liam R. Howlett
2024-08-21  8:41   ` Lorenzo Stoakes
2024-08-17  0:18 ` [PATCH v3 6/7] mm: Remove can_modify_mm() Pedro Falcato
2024-08-19 20:32   ` Liam R. Howlett
2024-08-21  8:42   ` Lorenzo Stoakes
2024-08-17  0:18 ` [PATCH v3 7/7] selftests/mm: add more mseal traversal tests Pedro Falcato
2024-08-18  6:36   ` Pedro Falcato [this message]
2024-08-20 15:45     ` Liam R. Howlett
2024-08-21  8:47   ` Lorenzo Stoakes
2024-08-21 15:56   ` Jeff Xu
2024-08-21 16:20     ` Pedro Falcato
2024-08-21 16:27       ` Jeff Xu
2024-08-21 17:28         ` Pedro Falcato
2024-08-21 17:36           ` Pedro Falcato
2024-08-21 23:37   ` Pedro Falcato

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