From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 42CFB3EBF2A; Fri, 13 Feb 2026 23:45:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771026348; cv=none; b=Dp8BtGEiCvl6je9vC7w68c1b/oc4U9vpnF4eqU6AdQWVrmlWXfmmgn2BLzVtbDO30YKiHxlnAK7cWYte1jbSOfzKsveJ8DdXCXVFvg8yrqrG2jCnz5D29Z4PYAWwsaxBX67KoI95iGxCGP10BWHda4q91hhsJlrWzLXneQ7JLzg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771026348; c=relaxed/simple; bh=EWfaKJCaJC2GErydog5q9S65WnGr3OmrX5J6uwCpiPk=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=JMCR7mpFeV9giA2eyIEgYs0kvALAUyNtrkdzAyGApdq80NGEb3+XA3/Zyw1V6twUK3ebBWtkCUgyd6/v4qWpV+gIJX+DnswhHBYyIImm3DtFBHiut981Vbh9BregkCrYKaK+oeoUYFIh8JvSdvGp4XfTyAoRJDd8ZxqSYZC8uho= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=GZ6LJlyZ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="GZ6LJlyZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9850FC116C6; Fri, 13 Feb 2026 23:45:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771026347; bh=EWfaKJCaJC2GErydog5q9S65WnGr3OmrX5J6uwCpiPk=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=GZ6LJlyZWLf4CDD5S/zkdrpwC2BXwCpeTxgo1tIB1sIcZco7UXK8Hdj4gaVXMxXwz IyqXcv7lo9oeR//v00ELuNg66qlpw9bzGf7XqxUsNZMUy2EUCuPJfnzRQ1UU8fcLlH XG3ptvUaXIezNwP1k8g2s9vlYWAy5TLqIVLvJpQllknBDZYAWaxwdcpzqzL9a8DSFM vnZGWriKQS6uWTi8U36rK9OmdRe3GVAcGatiya2g+PIQbWFkJZLl68iGfdtr/ckr+d tNCTSaRznDdLmk0AHz72k2L6ZggIyYEgpgkRpO+AMCQt8ZOgVU9i01qo8tS+bjd69S YnCUoqkY9aHvg== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 852673811A44; Fri, 13 Feb 2026 23:45:42 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH mm-hotfixes-stable] procfs: fix possible double mmput() in do_procmap_query() From: patchwork-bot+netdevbpf@kernel.org Message-Id: <177102634133.2575868.4556838261873713161.git-patchwork-notify@kernel.org> Date: Fri, 13 Feb 2026 23:45:41 +0000 References: <20260210192738.3041609-1-andrii@kernel.org> In-Reply-To: <20260210192738.3041609-1-andrii@kernel.org> To: Andrii Nakryiko Cc: akpm@linux-foundation.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, bpf@vger.kernel.org, surenb@google.com, shakeel.butt@linux.dev, ruikai@pwno.io, tglx@kernel.org, syzbot+237b5b985b78c1da9600@syzkaller.appspotmail.com Hello: This patch was applied to bpf/bpf.git (master) by Andrew Morton : On Tue, 10 Feb 2026 11:27:38 -0800 you wrote: > When user provides incorrectly sized buffer for build ID for PROCMAP_QUERY we > return with -ENAMETOOLONG error. After recent changes this condition happens > later, after we unlocked mmap_lock/per-VMA lock and did mmput(), so original > goto out is now wrong and will double-mmput() mm_struct. Fix by jumping > further to clean up only vm_file and name_buf. > > Fixes: b5cbacd7f86f ("procfs: avoid fetching build ID while holding VMA lock") > Reported-by: Ruikai Peng > Reported-by: Thomas Gleixner > Reported-by: syzbot+237b5b985b78c1da9600@syzkaller.appspotmail.com > Signed-off-by: Andrii Nakryiko > > [...] Here is the summary with links: - [mm-hotfixes-stable] procfs: fix possible double mmput() in do_procmap_query() https://git.kernel.org/bpf/bpf/c/61dc9f776705 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html