From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=91.218.175.54 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794447777; b=Q4xasZ7Hccxi844/t9mbvFuMS2ckdTDScneLQfbhwDWD4CXnuBamHPp5gfnrCidaOGic l6hs6k7wmkFnkKUV3xYhUNGPk+Lolh2aIwNJcDloIiInEubUQOUwGUrjZWmxMxYgqcA+p AZBN8u8NqVEWgopQlwd3znNf9/fIg7kFrZ9gKC7LU5wyrurDl2bqka9LhTmWxtMh6giaI P5f2cLVdNNoJjeMxb5XSAFVtLDmoKS4EIXZnLjxra90Uzxqn2IO/lnqmfl2UnzY747Rlo lbxiBtyvzn/UVNdU57rXVi4uaA/dSZ6bYPBwA/BkHFkYGNxQ3VPfOdiy4ywdrEswDag== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794447777; h=DMARC-Filter:X-Envelope-To:DKIM-Signature:X-Envelope-To:Received: X-Mizu-Trace-ID:X-Migadu-Flow:Message-ID:Date:MIME-Version:User-Agent: Subject:To:Cc:References:Content-Language:From:In-Reply-To: Content-Type:Content-Transfer-Encoding; bh=2amIad7DCymXtxktdk/h5Rd2UGWk5E5RRoIzlxgbm1w=; b=qyvWkC6soXEe+OhhY19jsYcgW+pzj/mUrREa2iYMCh/D78k1d46EMSH+wq9V/OcIuvYL HiY4xe2OL6HNEvfzT+GmGlEgkVIVA3OOzJHzZtipgvK6FfImpaFCM8bu7mmKoW0engkqJ 9GgwBg2spLKKNHD0RMtAh1/iv/cBMHXa1exN/rX7+GiPnTxId/d11zsYoJ99WBetaCjii nMuXoJEHxMq/8fz/A+d7QG4Hbvjr14GKzB7DqRtM0Jh8xpWO2SpBEiLkth2QAG9GwqN7Y +u/G39pP0f+q4238ncTXZj/PSvXcQCAX4EvAZ6LKqGvCsBcpiL3XDTTdKQtwiV69LXw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=ueqOyERD; arc=none smtp.remote-ip=91.218.175.54 Received: from mta0.migadu.com (out-54.mta0.migadu.com [91.218.175.54]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B2429606A31C for ; Thu, 12 Nov 2026 01:42:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org B2429606A31C Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=ueqOyERD X-Envelope-To: stable@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=2amIad7DCymXtxktdk/h5Rd2UGWk5E5RRoIzlxgbm1w=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1794447773; v=1; x=1795052573; b=ueqOyERDup5z6Gcwjqq4RksiHf2hxsuXAgGZTIirFSsM8zPUGgZe+0Hsp+BD0oJhGNKmaUk4 /HZ14RNCxZ2vJ8lmQWS3FlXo7J1kdC19Tia2jdrxj47fHAYkEYV9Bj4FWKs4aUeZDLFv0Jw+Osw bodN8nbLIFRmGsh+0s45/B0U= X-Envelope-To: stable@vger.kernel.org Received: by smtp.migadu.com with ESMTPS id 4e91415cff7979f9; Thu, 12 Nov 2026 01:42:53 +0000 X-Mizu-Trace-ID: 4e91415cff7979f9 X-Migadu-Flow: FLOW_OUT Message-ID: Date: Thu, 12 Nov 2026 09:42:36 +0800 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 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 6.18.y] mm/ksm: fix userfaultfd protection during merge and unmerge To: Sasha Levin , stable@vger.kernel.org Cc: Samarth Narang , Andrew Morton , "Lorenzo Stoakes (ARM)" , "Kiryl Shutsemau (Meta)" , "David Hildenbrand (Arm)" , Mel Gorman , Xu Xin , Chengming Zhou , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , =?UTF-8?B?SsOpcsO0bWUgR2xpc3Nl?= , Andrea Arcangeli , Peter Xu , Bobby Powers , Brian Geffon , Denis Plotnikov , Doug Gilbert , Hugh Dickins , Johannes Weiner , Martin Cracauer , Marty McFadden , Maya Gokhale , Pavel Emelyanov , Rik van Riel , Shaohua Li , James Houghton , Jonathan Corbet , Paolo Bonzini , Sean Christopherson , SJ Park , Zi Yan , Mohammed EL Kadiri References: <20261111082809.32654-1-lance.yang@linux.dev> <2026-11-11-1-daily-reply-0026-04883abeb32ad63ca89c@kernel.org> Content-Language: en-US From: Lance Yang In-Reply-To: <2026-11-11-1-daily-reply-0026-04883abeb32ad63ca89c@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 2026/11/12 05:54, Sasha Levin wrote: >> [PATCH 6.18.y] mm/ksm: fix userfaultfd protection during merge and unmerge > The 6.18, 6.12 and 6.6 patches are based on released stable and do not apply to > the stable queue, which already carries 2efc6332f18b ("mm/ksm: keep soft-dirty > when merging a page") in replace_page(). The fix itself looks sound. Could you > rebase and send a v2 with the two uffd-wp lines placed after the soft-dirty > block? Sure, thanks! > The 6.1.y series for 990d6c2194a9 ("mm/ksm: fix userfaultfd protection during > merge and unmerge") applies fine, but it has to wait until 6.18, 6.12 and 6.6 > carry the fix, so please resend it together with the v2 of those. Okay. Will rebase and resend all four as v2 :) Cheers, Lance