From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out162-62-57-137.mail.qq.com (out162-62-57-137.mail.qq.com [162.62.57.137]) (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 32B2D285C96 for ; Mon, 26 Jan 2026 02:29:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=162.62.57.137 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769394577; cv=none; b=fkDRkpg9JxK8mMslpT6bQCtqfXzwnaYpXJki+Tb4su/y2vI4vZQfsvbid4pStgcR7NRrN7Uyk6Ho19n3zF1/aY5HQiD/EIc1dzkcsqRkTICLWrNa0t2FQAIuq9i5Di/D/T+kJz+NEjyi3/IrPZ0jIz1Z2KsWfo8l4TIUTfO9oIo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769394577; c=relaxed/simple; bh=S9qeJGZYXTirZouZDKgtS3T4YaKjFKra6egN9lOYUdY=; h=Message-ID:From:To:Cc:Subject:Date:In-Reply-To:References: MIME-Version; b=bQzK9oQpS0dHK2HyoAzh2cyO5iH72HcuiyYfjXpNlqSC0iHo5ky/sHLFhYI0EmMQ4YbND6/E9RfQe4YVQUOqXj3l+kswsvccETe/QGuBLcyGqKkELEfDBK9jtUD6PpTq2shnk4aJcFgaCc+kU5es/9pLHAcswSB2k7HCzPOKgzc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com; spf=pass smtp.mailfrom=qq.com; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b=yHgvwA+I; arc=none smtp.client-ip=162.62.57.137 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qq.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b="yHgvwA+I" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1769394565; bh=ahJ2XxyrSMVbn8Hcj61XCSm6A8qW0OK4yY+ghinlsxM=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=yHgvwA+IEGnVcy+YdOsdTbl7YR/3U7Ut0MQF7GKv80Zi7qOW7GymlNypYSo5xcL7g Ttewi1roC+DU880HLXkFgY4eLFnYeRGRZ9HlbN5Sjt6vO33Ju5GsHUlGIsBXTcsL9L neA5Mn6V4I05j8YEEULYPWVvivIa+Dv/XEhD8/po= Received: from lxu-ped-host.. ([114.244.57.237]) by newxmesmtplogicsvrszc41-0.qq.com (NewEsmtp) with SMTP id 7571C618; Mon, 26 Jan 2026 10:29:23 +0800 X-QQ-mid: xmsmtpt1769394563toh05vrp4 Message-ID: X-QQ-XMAILINFO: MeukCuWaRbQlLfRTVS9rcXUNDc6OvhqP5ZsUkzetmPkR5k1ycTsZAersPpyuR8 A1dkc23xFc+miEvdCMiX9nq7HjolVOvx/JU9wBzmA6twhmUU6wD+9k0A3O/OnJgJWW+Mpvgi77r6 ri9iYBL9KS3aeQEIJXs7s78HbAr9MSDEa3TqPMt9RKVBoviFKK1W+EFhwyWRjt6ZDVGsOpcPnAUF oJx9aIeiJw5rx98WWYKAdgYazU5vb4q7Y1YqxjOxCkgKyaJcm+LJSMAQqECxkekI85YR8nziuSjJ uMWDjE1Q9P2MzcttU6DYz+sNGAAB8OeMy5E+aQwSF88sKr74/D5e/COqekCFUXt4duM/oY0+PhZT zlRGpkPHF3azvT7cmSIeh+cNWhN8ayXok9U84/qWPUQmhETjTZr/0Wq4daFYSqAqY174M/cVY6He N/Bq3fUCtnEAodQQF4isUfTw+TZOXlftn840OqHuOyGBiQO6dUUTUiP9WWMV0ga1H5dKEhwPXEuh 2/bG0uhvhgJ6nVw7n8lcRmBwAoHTE3tI9DZp+TiRKWrmKnVnVUSARSiZ8bcVYM690gds/Pu71vxa gBqQ/pKFymPCxY1KMrhz0RjHDCJ3EJ2gi/JrlqnXEDj43AbKeRh0AbBLHhqj25LIljBWMajgBVbq vQtZuvuIwOyDCJqaE5BkN0ZqhHoaZv90o/8+pOoHt8wBV+O87sA+0+Wyc2SCNhttkQlIbSBqZaNB MdI6z0ZOM+x/gmZ0ofX6bmLhmkxWY7UHjBLVB6JOb/Y58eZhf37TO3SDd0Y2LadJxvtWQCaYkt4P R5LyerDbZuFdBlFSH987B2nj4NDTZ7jPMQ1zt8ggmIHrKe11bdvyRX93PNtH+BQtVMZujBRyxQRH ceERyzn6dhpfAxjw3NMh6NKJugHaE8mSC6f5KxNwNroJ1rGSao9BMN6mnS9rfTGXFstzYP2jp4+S gWSzX1AHH6f/eUFJOStP49wWtI7D/AzHW4R5Rc9Zf/y1VJxgwetw== X-QQ-XMRINFO: MPJ6Tf5t3I/ylTmHUqvI8+Wpn+Gzalws3A== From: Edward Adam Davis To: syzbot+a0c841e02f328005bbcc@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [iommu?] KMSAN: uninit-value in iopt_pages_unfill_xarray Date: Mon, 26 Jan 2026 10:29:23 +0800 X-OQ-MSGID: <20260126022922.983065-2-eadavis@qq.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <6975b1f4.a00a0220.33ccc7.001f.GAE@google.com> References: <6975b1f4.a00a0220.33ccc7.001f.GAE@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit #syz test diff --git a/drivers/iommu/iommufd/pages.c b/drivers/iommu/iommufd/pages.c index dbe51ecb9a20..f606148920fa 100644 --- a/drivers/iommu/iommufd/pages.c +++ b/drivers/iommu/iommufd/pages.c @@ -289,6 +289,7 @@ static void batch_clear(struct pfn_batch *batch) batch->end = 0; batch->pfns[0] = 0; batch->npfns[0] = 0; + batch->kind = 0; } /*