From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f49.google.com (mail-wr1-f49.google.com [209.85.221.49]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DFADC248883 for ; Wed, 8 Oct 2025 12:37:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.49 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759927052; cv=none; b=pay2yUSos1HNCkjrcKhxWGg25GWfOpH+EXCTLapTBkih0Oaf00thQww0pODjcre5lm9FMO6QLHnbQugslJQSrcD61pphtiQA6mjYfTJUcnnnqPCXjrqsOczZ4ivpR0TtFl+xfFaoaIezNk0s5A+RT2YvKXpBl8nwpdfhyHimlAg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759927052; c=relaxed/simple; bh=V0yyKxqZgbFO/0v6WO5ujCe0dE9JkSsBVJjkd3iB3MY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=U3piYmuTbUxAsYvkZp0QDJlowOwLlvMaWbFrCYCmvfjuLozManzgZUT7RQy5cY8i3UKRTm3SwI53RJA+vv5L0kNCgx/wnbD919JCOPqJPrA4YW24L+A6ANmyN0wSKXpLKv2eqKYBDtllFaVlLMjdsvKAx08+DFYUIfJZK3vYQHc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=O3wOw4R+; arc=none smtp.client-ip=209.85.221.49 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="O3wOw4R+" Received: by mail-wr1-f49.google.com with SMTP id ffacd0b85a97d-3ed20bdfdffso6590203f8f.2 for ; Wed, 08 Oct 2025 05:37:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1759927049; x=1760531849; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=E2TnAZHPDozLT5yZkEQn3hUFYpt7Se4zx7CRpBYQteU=; b=O3wOw4R+3mpFzsTbjWPo7xmxvqC7o9eL/zeXWB6zf6doU/HrlHW4xirCdykDrCJtOs EagQgH4HgbcqUUNii1c2i3ATcavt8Anh47RfErpDDyNhtOBLQ4XjIoUWdWk6CNGtGwCO CVDzt1AsUktpk2O0H1Q9C3D7rsAEWNZHyX3KWrRVhhq2UQgulYfGgCWmckp1mRjxyEyP 2Eu1QRqpcyFF+zNPEattuAQvWMDUcCfIK4Rus9k3sAjhfuG30SaMP7+THnHrMFiqp+CW aflVMijw1EPXB4DEZzq2c7TYbYDSoNyL4Jgd5VweG7sfYrrhGouT6qsY5g2XppccsIhd 97OQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1759927049; x=1760531849; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=E2TnAZHPDozLT5yZkEQn3hUFYpt7Se4zx7CRpBYQteU=; b=QPSBpZ369nzcJOStkJ+33CQtbE30Aqw0MHf9n8FzFGc+WtRmNlo8JJ9WcHGnE9IkGZ 4Y1UJ/VFsL86NbeuCORqgLIOCXpHfV2UOX5QUtuQSts0gqEFRJFSc0Zkmw2oKffcxJOK 3zmyt8TF7rGpOKwt+5340zH9/bYB0z7m6uNepxxZiP/IsJrFWm31XdzVrbDd7I3dxYXq nWJLB6FgDMOXYtrUKKrFUNjdhf6oWRw4RK3GlNpUCtm78MDi6vG0wB746WE2YPTLhHF6 PEJV8BvayOjV4HRojVdCl42gtsmcYoM88VoYRH4erGIloP6kQxJzEdkhaDJ19x0ueGqZ y0NQ== X-Gm-Message-State: AOJu0Ywj3fdfQ2eJW5uywgYi2ekXVaUE7IefZsUXtgiVyDrwbWjOUMof lY+k3yjIP5nDGEpnXOpOwxWL21uAXsT8eW4FT7hgHVEM5LmSg2eykJ9I+G9gjw== X-Gm-Gg: ASbGncunIbu/j1O6F9HbOj3t6ft2mS/FYUXb8Pi0aq+UMJS7hP+kgr1Uz5ppVjyzpzv 5AJ2BpeEPGK9pMsfgLco3TtIR/Ukg6L7ETjYFk64Tjteb9ScqGvNHmKf1dHfEppGXgGX4h1u0zi 90LvIHLtbiOmjzGaw5T5sKN0MWH5EoLBEz0039kln4RbbmPvdxvMZ4sRJj8nLfzUUS8lp8XE3DI O12gYp2vDu3CPr4FsbI66YiyM+EjGZOfC9ELF8vgk8UQY3EkgVE+gJKacRxOS4QOXK7D+y7Y7qX YScULQCrd8lGhR6Z+7WwA8/0kpBbeJ6rlXJmYq9PPUHbXWXZpciBMPUK1FMSFlEaPusIPlijikW tvXeeBgDdx3Rp4KWH2QGlXrgOqVwLjGrS6mZPmgoO X-Google-Smtp-Source: AGHT+IFw4s1qDph/qnRfxEwZxh0I5sK3smzwrgDVM16o1rujr89ogmGIxIuGoFXY4FIUDR/y29IEaw== X-Received: by 2002:a05:6000:438a:b0:425:86ae:b0b with SMTP id ffacd0b85a97d-4266e7d9330mr2343788f8f.38.1759927048667; Wed, 08 Oct 2025 05:37:28 -0700 (PDT) Received: from 127.com ([2620:10d:c092:600::1:b002]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-4255d8a6b8bsm29727055f8f.4.2025.10.08.05.37.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 08 Oct 2025 05:37:27 -0700 (PDT) From: Pavel Begunkov To: io-uring@vger.kernel.org Cc: asml.silence@gmail.com, axboe@kernel.dk, netdev@vger.kernel.org Subject: [PATCH 1/1] io_uring/zcrx: increment fallback loop src offset Date: Wed, 8 Oct 2025 13:39:01 +0100 Message-ID: <1b3a55134d4a9a39acab74b8566bf99864393efc.1759914262.git.asml.silence@gmail.com> X-Mailer: git-send-email 2.49.0 Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Don't forget to adjust the source offset in io_copy_page(), otherwise it'll be copying into the same location in some cases for highmem setups. Fixes: e67645bb7f3f4 ("io_uring/zcrx: prepare fallback for larger pages") Signed-off-by: Pavel Begunkov --- io_uring/zcrx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c index eb023c4bc0ff..0a43acbdef98 100644 --- a/io_uring/zcrx.c +++ b/io_uring/zcrx.c @@ -1079,6 +1079,7 @@ static ssize_t io_copy_page(struct io_copy_cache *cc, struct page *src_page, cc->size -= n; cc->offset += n; + src_offset += n; len -= n; copied += n; } -- 2.49.0