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 X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E2482C432BE for ; Mon, 16 Aug 2021 09:58:21 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B15C561B7B for ; Mon, 16 Aug 2021 09:58:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org B15C561B7B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 930F189D9B; Mon, 16 Aug 2021 09:58:20 +0000 (UTC) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by gabe.freedesktop.org (Postfix) with ESMTPS id B83C26E8A5 for ; Fri, 13 Aug 2021 17:13:17 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 4CBA961102; Fri, 13 Aug 2021 17:13:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1628874797; bh=Ye6ux6gsSOYuKdnM8xs7kUfqlN15AdCOL55n3kBtvyM=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=K6GH6FvSCN/rjrKcXrIuMm7FkpQ1Fm6aDgA497ASnfdG7Pn0vqyuJO79fCr92x3mt wLL+WyW7mxL9sLya/Xbbu3YyK4azqxHnZHr0xAeXoEisA+nAJ6fMr45FuQy2yW9boo milZyLiPRx9rBP0NXUaJlpAQb/Qgupds3dCPiYv/nPG9Og+c8+GTg47gBli4Jn+Vwi 8oixL+kxOR0tpo0e54iApPWVmk9ZZxMnexpUOfVAabMDUfVty0GcQ1L32XZ3O1QeXK ltZAhwR4QXG7YyMr6pkl+AOeVP0bm/Vr8CoQad4LMFaAx5hhKJeDY57KsBvDLVK3rC O/KmE+kBon71A== To: Dan Carpenter , thomas.hellstrom@linux.intel.com Cc: intel-gfx@lists.freedesktop.org References: <20210813113120.GA30489@kili> From: Nathan Chancellor Message-ID: <70702840-5346-e14c-5fb2-b1ad6feac1c9@kernel.org> Date: Fri, 13 Aug 2021 10:13:16 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: <20210813113120.GA30489@kili> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Mailman-Approved-At: Mon, 16 Aug 2021 09:58:05 +0000 Subject: Re: [Intel-gfx] [bug report] drm/i915/gem: Correct the locking and pin pattern for dma-buf (v8) X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On 8/13/2021 4:31 AM, Dan Carpenter wrote: > Nathan has probably already sent fixes for these. Nathan, could you CC > kernel-janitors on static checker fixes? That way we wouldn't send so > many duplicate patches. Sure. I did not send any fixes prior to this email but I just sent https://lore.kernel.org/r/20210813171158.2665823-1-nathan@kernel.org/ with kernel-janitors and you CC'd. > Uninitialized variable warnings are really frustrating. We disabled the > GCC warning for them because the new GCC is crap. So now they take up > a lot of my time. A few of these are because Smatch doesn't always know > when we enter loops, but more than half are clear bugs. > > drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c:189 i915_gem_dmabuf_attach() error: uninitialized symbol 'err'. > drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c:80 igt_dmabuf_import_self() error: uninitialized symbol 'import_obj'. > drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c:104 igt_dmabuf_import_same_driver_lmem() error: uninitialized symbol 'dmabuf'. > drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c:138 igt_dmabuf_import_same_driver_lmem() error: uninitialized symbol 'err'. > drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c:158 igt_dmabuf_import_same_driver() error: uninitialized symbol 'dmabuf'. > drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c:231 igt_dmabuf_import_same_driver() error: uninitialized symbol 'import_obj'. > drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c:197 igt_lmem_pages_migrate() error: uninitialized symbol 'err'. ... > drivers/gpu/drm/i915/gt/selftest_hangcheck.c:465 igt_reset_nop_engine() error: uninitialized symbol 'err'. > drivers/gpu/drm/i915/gt/selftest_hangcheck.c:580 igt_reset_fail_engine() error: uninitialized symbol 'err'. Clang caught these two but none of the rest and it is an obvious fix so that is the only one I am going to fix. > drivers/gpu/drm/i915/gt/selftest_migrate.c:102 copy() error: uninitialized symbol 'rq'. > drivers/gpu/drm/i915/gt/selftest_migrate.c:113 copy() error: uninitialized symbol 'vaddr'. > drivers/gpu/drm/i915/gt/selftest_migrate.c:182 clear() error: uninitialized symbol 'rq'. > drivers/gpu/drm/i915/gt/selftest_migrate.c:193 clear() error: uninitialized symbol 'vaddr'. > drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c:819 __unwind_incomplete_requests() error: uninitialized symbol 'pl'. Cheers, Nathan