From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A89DBF46445 for ; Mon, 16 Mar 2026 11:02:08 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 1DC6B6B01A7; Mon, 16 Mar 2026 07:02:08 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 15CC06B01A8; Mon, 16 Mar 2026 07:02:08 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 089916B01A9; Mon, 16 Mar 2026 07:02:08 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id ED0B46B01A7 for ; Mon, 16 Mar 2026 07:02:07 -0400 (EDT) Received: from smtpin21.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 9AD041B6EE8 for ; Mon, 16 Mar 2026 11:02:07 +0000 (UTC) X-FDA: 84551636694.21.E195DC1 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf25.hostedemail.com (Postfix) with ESMTP id 03C5AA0014 for ; Mon, 16 Mar 2026 11:02:05 +0000 (UTC) Authentication-Results: imf25.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=Nfxuw0vY; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf25.hostedemail.com: domain of rppt@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=rppt@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1773658926; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=b4IoLFkt+skuWqZBhxHzmoNyJcQ6C7VaPFZWWwRWlVQ=; b=Fkz5U5KMs085bkqH1gCwd2IlVAv+fZ5vVC2GBazJxlUvhUxXrfuNXjhbAJodT1z3s70yK8 kV2hThGDT3xJsfGUaqXxgCPNBFfIGsmz6Q5INjlAAcrUZu02KyEtgjxFl+47CLwvU2+Ggq bFAN8vTFjtOoGBoRQEOjCWTV+UbgEM8= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1773658926; a=rsa-sha256; cv=none; b=bfx5ytK0GCBMbbGSfdOpRAtKhs8j+9o2vhiXoXbOohFZZAMlIJ4LaapyuimN0uriakRzk9 TkUc9a8LvHmztYQndtpT89anuEEmtniGC53QJ+9mhBPVs3hhwnQHghQltOKnzMFDmLK8Vh ozIHkJfJpfrG6QRCA2IOnqiSaDgZM58= ARC-Authentication-Results: i=1; imf25.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=Nfxuw0vY; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf25.hostedemail.com: domain of rppt@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=rppt@kernel.org Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 4A14260008; Mon, 16 Mar 2026 11:02:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DE1CDC19421; Mon, 16 Mar 2026 11:02:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773658925; bh=+vXY/uUfxIgAWWoJ8k86RgfB7xYXWE+ipd2r0nuy4v4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Nfxuw0vY9s+sFIWP+LQnSSrqDH5Pm3bXu8ejDhVm5ZXg7Sm1FSyMtO8HkBt/jkg7K uBvIC+EhzFaUOHRB3F5/hves2byS/3UesJ2IEZjvpe+07Pc5xmoV/z/vhxy6M4zMy+ krbjxepCx2eWn8J3IdHNR9Bz+gkySZjPC3lD45vuB12I5p0MLnb0509eOTnHl+ZSva T4XyhhgNvztRLwP6tH5TcHXoaqWQwG2+xsNxwHolmwEQ0vV0B/1+79TyFKIv5jNG+N B0ERorGxTzYBtZgMroP6B7q4O/KumzZEt/E1Di5WOKpJBZC1pExyu1b1jUVql1UhOj v9zv1sqnD0LUg== Date: Mon, 16 Mar 2026 13:01:57 +0200 From: Mike Rapoport To: Harry Yoo Cc: syzbot , Liam.Howlett@oracle.com, akpm@linux-foundation.org, david@kernel.org, jannh@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, ljs@kernel.org, riel@surriel.com, syzkaller-bugs@googlegroups.com, vbabka@kernel.org, peterx@redhat.com Subject: Re: [syzbot] [mm?] WARNING in folio_add_new_anon_rmap Message-ID: References: <69b703e6.050a0220.248e02.0101.GAE@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 03C5AA0014 X-Stat-Signature: fj5wd89m8j81ap7snfixons4anct7spk X-Rspam-User: X-HE-Tag: 1773658925-448912 X-HE-Meta: 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 UEIMSzoN qzFm+8z4gGLFdgXZJ4hcLeMQftghzrYSjVZG1PYls4BfRtGIxLv0wx3GaNu0SSKVegeba6rlOzcS11/GQa2Nzrd1S1jbC3tMQNzJYaEQvMY9u4H+yQCMgDq0eq4Ze0vSckCh08GA/2/vPBsIRIsnTKA8wTG8JgBznkqi4bDio3JFaOBAYgWM4Gy0uy1c8a1hct+3UPIVHd4ZJsHylw9nXLNfd/8oG0VCuqEHbR8t+ZePwNn5HQ4AbiB0gxZK5dSBGt+6fOFV/hHTyUjPxyhXblwB0qjeq6HVIp+rYaYPJy3o7Fy4o1/PLP1wHtceq7xPTHvdeutFH2F5d0fPo3fI8fFHk/kOZf1BaWFBfTEfDing+ZpItrxXMA4MJBtDC5er9ALIP2+f/Z8Ob54s3h7R0hsV3+7PmxgZJkJbVZg3U9k1x4OR/1oQY2pLbomO1VgRqfwDe Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi Harry, Thanks for the fix :) @Andrew, can you please fold it into "userfaultfd: introduce struct mfill_state" On Mon, Mar 16, 2026 at 03:19:49PM +0900, Harry Yoo wrote: > #syz test > > diff --git a/mm/userfaultfd.c b/mm/userfaultfd.c > index 510c6dcb9824..73adf9ffcac2 100644 > --- a/mm/userfaultfd.c > +++ b/mm/userfaultfd.c > @@ -880,7 +880,7 @@ static __always_inline ssize_t mfill_atomic(struct userfaultfd_ctx *ctx, > .dst_start = dst_start, > .src_start = src_start, > .flags = flags, > - > + .len = len, > .src_addr = src_start, > .dst_addr = dst_start, > }; > -- Sincerely yours, Mike.