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a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1745309142; bh=pg8Gbocq9VjTpIEx3kBymgU84OX5Sf6XtHeOSDuRyVg=; h=Subject:To:Cc:From:Date:In-Reply-To:From; b=MFKi6pSH39PnCYyDyRgSZHZ5Qyk4Nh8cvl3q2z/2/DbXe/hX1FPJPRJbOrItm27zm mwaV6ZV0cO8Z3tOnVJNWViPGtwA9HEi21P0LhbqZ+HnnSPGesT4kq3WzItMjBFXgYb BAczL9zkAJtoOGuF2i2OUvI48OH5Xx2lwmyehVGA= Subject: Patch "mm: Fix is_zero_page() usage in try_grab_page()" has been added to the 6.1-stable tree To: alex.williamson@redhat.com,carnil@debian.org,gmazyland@gmail.com,gregkh@linuxfoundation.org,linux-mm@kvack.org,sashal@kernel.org Cc: From: Date: Tue, 22 Apr 2025 10:05:38 +0200 In-Reply-To: <20250416202441.3911142-1-alex.williamson@redhat.com> Message-ID: <2025042238-applaud-postnasal-ee55@gregkh> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit X-stable: commit X-Patchwork-Hint: ignore X-Rspam-User: X-Rspamd-Queue-Id: 014438000A X-Rspamd-Server: rspam04 X-Stat-Signature: ash8yanabxr1w65f4gz75p8o4r7y6xty X-HE-Tag: 1745309143-387175 X-HE-Meta: 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 2I3AfG4N 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: This is a note to let you know that I've just added the patch titled mm: Fix is_zero_page() usage in try_grab_page() to the 6.1-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mm-fix-is_zero_page-usage-in-try_grab_page.patch and it can be found in the queue-6.1 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >From alex.williamson@redhat.com Tue Apr 22 10:00:53 2025 From: Alex Williamson Date: Wed, 16 Apr 2025 14:24:39 -0600 Subject: mm: Fix is_zero_page() usage in try_grab_page() Cc: Alex Williamson , Salvatore Bonaccorso , Milan Broz , stable@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Sasha Levin Message-ID: <20250416202441.3911142-1-alex.williamson@redhat.com> From: Alex Williamson The backport of upstream commit c8070b787519 ("mm: Don't pin ZERO_PAGE in pin_user_pages()") into v6.1.130 noted below in Fixes does not account for commit 0f0892356fa1 ("mm: allow multiple error returns in try_grab_page()"), which changed the return value of try_grab_page() from bool to int. Therefore returning 0, success in the upstream version, becomes an error here. Fix the return value. Fixes: 476c1dfefab8 ("mm: Don't pin ZERO_PAGE in pin_user_pages()") Link: https://lore.kernel.org/all/Z_6uhLQjJ7SSzI13@eldamar.lan Reported-by: Salvatore Bonaccorso Reported-by: Milan Broz Cc: stable@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org Cc: Sasha Levin Signed-off-by: Alex Williamson Signed-off-by: Greg Kroah-Hartman --- mm/gup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/gup.c +++ b/mm/gup.c @@ -232,7 +232,7 @@ bool __must_check try_grab_page(struct p * and it is used in a *lot* of places. */ if (is_zero_page(page)) - return 0; + return true; /* * Similar to try_grab_folio(): be sure to *also* Patches currently in stable-queue which might be from alex.williamson@redhat.com are queue-6.1/mm-fix-is_zero_page-usage-in-try_grab_page.patch queue-6.1/revert-pci-avoid-reset-when-disabled-via-sysfs.patch