From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794047637; b=cM7wbOqRj/X+os2ySvgtPqKow78EVxiWX/rAAhmC8RkluuHd0v88ubez/5/ia979k+G4 SxCcfNYOzj7Edldp5wXvUxF4S9+X6uOgNSr2bYKI8yjvPOJk1xXXBlWFsZjGAjwZ5jEku qi1IOnOyBAYcOoVSyCpPyHTz3pv3AdfOTSe/WFgOH5NWhezt4VauTL2i5VCmzL0btNEJi 2XE7xxjazwu+Z/ML6DcZKxkbkX/9KbfJb9Ll1aHxfva5JF32oe4y/QJM61YMfgBWEJk9y oqOgZjR7kHEWl0rfK1cPB2O8JXlHUwH1VODMBDbHaQowalQz+SlixIu92TjEgfbE+DA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794047637; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: MIME-Version:Content-Type:Content-Transfer-Encoding; bh=l8YzWDSRJ62ahj15qUjgm1hMrJYj37ZS8899UqqY+Ho=; b=C6htXyYUuJgceG/lnM6jGnLZFBizhKTKk1F623wSRrOiQfwkHuuI3MGh1bf9WdLhY9Z0 YD6AUbMceyFFE9GkSHDUFnJkhjKSmd+VeLFazAOAe4crf7flSWSupBDspRYxn5K5WxnV2 0P0W1iBaHbcAEXEKU8Uw75CbHy5IFSmCHJxwUDD3uFIhNBBE1RX+RQxaaYl06CI8lTm4r wPcEaYXdPa8gperKc7Qx8HnM0EtGgdnE129qpPEItHdXCmmemMUIkbSwnItpTePt9gjIw 36bJGPDxQJgakTg3tA0++IvI/Y6UbaX5XVifzHnFQKk3XKc+/0xMT6jNakrQ4sRIzMg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=TkcHZbwi; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6F330606A32D for ; Sat, 7 Nov 2026 10:33:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=TkcHZbwi Received: by smtp.kernel.org (Postfix) with ESMTPSA id A16BA1F0089F; Sat, 7 Nov 2026 10:33:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794047637; bh=l8YzWDSRJ62ahj15qUjgm1hMrJYj37ZS8899UqqY+Ho=; h=From:To:Cc:Subject:Date; b=TkcHZbwi1y0g8ftTlhVhi5AHGmqq7jg+7KgNzVHL/gIYSTjw6n54Vx04bE6G9PXVt riDI5CCHSOgMsOx3ULAHwvcaKEVKlPC3u5kVTMqtWTP/QxV8ycTaNA/4sB8Hayakp0 YM5aXzn687tCmzSFeBIyM+i2Ssuh0fsEhYKDjMPe0YEPYiDhRVhBDjGfszuBgqF8t/ qbzpc54GtLXucYoTKN8B6/78g90RPcViehy1glo264L4P/NUVlhqFlLWAzps8aFQUj nHiT1yL15kxsqajMBZJX02+ON8q0lYRWmBImplNHfB4bxJxD9i6iUrPd1Qa+76eaGg J2aPsO6sikQTQ== From: Sasha Levin To: sj@kernel.org, akpm@linux-foundation.org, brendan.higgins@linux.dev, davidgow@davidgow.net, usamaarif642@gmail.com Cc: stable@vger.kernel.org Subject: FAILED: patch "[PATCH] mm/damon/core: disallow max < min damos filter range arguments commit" failed to apply to 6.6-stable tree Date: Sat, 7 Nov 2026 05:33:55 -0500 Message-ID: <20261107053355-failed-6.6-1bfb9384ae0e@kernel.org> X-Mailer: git-send-email 2.53.0 X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x 1bfb9384ae0ed52d61eb601b655014b7815ff849 # git commit -s git send-email --to '' --in-reply-to '20261107053355-failed-6.6-1bfb9384ae0e@kernel.org' --subject-prefix 'PATCH 6.6.y' 'HEAD^..' Thanks, Sasha ------------------ original commit in Linus's tree ------------------ >From 1bfb9384ae0ed52d61eb601b655014b7815ff849 Mon Sep 17 00:00:00 2001 From: SJ Park Date: Mon, 14 Sep 2026 07:23:21 -0700 Subject: [PATCH] mm/damon/core: disallow max < min damos filter range arguments commit damos_commit_filter_arg() receives range arguments for a few types of DAMOS filters. It allows any range including max < min range. It is fine for the logic, but makes no sense to support it. Actually DAMON sysfs interface is doing the validation on its own. To avoid duplicated validations in multiple DAMON API callers, it would be better to do the validation in the core layer. Add a validation of the given range. Link: https://lore.kernel.org/20260914142327.92510-5-sj@kernel.org Signed-off-by: SJ Park Signed-off-by: Andrew Morton Cc: Brendan Higgins Cc: David Gow Cc: Usama Arif Cc: --- mm/damon/core.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/mm/damon/core.c b/mm/damon/core.c index 1932a50252079..5fdacb9dcee5f 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -1325,15 +1325,21 @@ static int damos_commit_filter_arg( dst->memcg_id = src->memcg_id; break; case DAMOS_FILTER_TYPE_ADDR: + if (src->addr_range.end < src->addr_range.start) + return -EINVAL; dst->addr_range = src->addr_range; break; case DAMOS_FILTER_TYPE_TARGET: dst->target_idx = src->target_idx; break; case DAMOS_FILTER_TYPE_HUGEPAGE_SIZE: + if (src->sz_range.max < src->sz_range.min) + return -EINVAL; dst->sz_range = src->sz_range; break; case DAMOS_FILTER_TYPE_PROBE_HITS_WSUM: + if (src->range_max < src->range_min) + return -EINVAL; dst->range_min = src->range_min; dst->range_max = src->range_max; break; -- 2.53.0