From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mout.web.de (mout.web.de [212.227.15.14]) (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 3AC8946B8; Tue, 13 May 2025 16:48:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=212.227.15.14 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747154917; cv=none; b=aSffaEFUdXoqjyk+r1qo2NPuO5DX/3smhEnTTHIYOzs7oPIsuKV5mIZgW9UvhGcSGQOvhkZRDozUOXl+x6PwXOUJzi4aH2kZ3V2sDrBjldQaIic3tX2SIL9mZm5E1I6WE8wh2KrNRAry9HPX1jOttOGlkFG+6SIPfO14/PqFfds= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747154917; c=relaxed/simple; bh=aEJswIepQo5GtmjeVR5yL0vVYawkMK4RHTOo1GRwF38=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lZ6mop2hdd4KMkEuIop2pCDjnsre9gRGWHzR7bqlZimQV00lH/wWEU+UGu4p8OIIrgpGggBxeVwbHC8omUvexoE8dDiV1VhUKfxdeYwWfuvFZJoQQVXVjihD0lEll7eniyo7DmOPcRK4kFLLL9OzFHSCnJwKqYNFOHn6Zj3Gtm8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=web.de; spf=pass smtp.mailfrom=web.de; dkim=pass (2048-bit key) header.d=web.de header.i=spasswolf@web.de header.b=IVG134Ug; arc=none smtp.client-ip=212.227.15.14 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=web.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=web.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=web.de header.i=spasswolf@web.de header.b="IVG134Ug" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=web.de; s=s29768273; t=1747154889; x=1747759689; i=spasswolf@web.de; bh=aEJswIepQo5GtmjeVR5yL0vVYawkMK4RHTOo1GRwF38=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:Message-ID:In-Reply-To: References:MIME-Version:Content-Transfer-Encoding:cc: content-transfer-encoding:content-type:date:from:message-id: mime-version:reply-to:subject:to; b=IVG134UgPKvLGrsUta8mEAUGBPGJkSn7T9ZXojl2GPfftsMoyTx0JSCJlrU1Hyg6 kQgNEMriXr8rG9cfkcfxv0tIn9uwUgTH+Xu/hKTDxQYhyHrSTOBjGFGajXO1OGE/6 zog7FWBchcAtWRiT2ARoPKE7uz/OL0GQg8bNRyxBBC9Eu6LRk4ue/KPBju96ahCvx efHM7ryT6+gmuH/5n9T+a9a/28p+1dIBt7mqkgayEWPTxeax+TSUf5QOH0/2KFTHH 2ZOVmDfKna5qrvVEaok7mB0fouv4cOUr6KwLBuWoT7IFZuVn3McYYtha77eYthErO yfl7lW00YnkZ5gyUVg== X-UI-Sender-Class: 814a7b36-bfc1-4dae-8640-3722d8ec6cd6 Received: from localhost.localdomain ([95.223.134.88]) by smtp.web.de (mrweb005 [213.165.67.108]) with ESMTPSA (Nemesis) id 1MREzA-1ubtIj1wd2-00JvCx; Tue, 13 May 2025 18:48:09 +0200 From: Bert Karwatzki To: linux-kernel@vger.kernel.org Cc: Bert Karwatzki , linux-next@vger.kernel.org, llvm@lists.linux.dev, Johannes Berg , Thomas Gleixner Subject: Re: lockup and kernel panic in linux-next-202505{09,12} when compiled with clang Date: Tue, 13 May 2025 18:48:04 +0200 Message-ID: <20250513164807.51780-1-spasswolf@web.de> X-Mailer: git-send-email 2.49.0 In-Reply-To: 20250513101912.58056-1-spasswolf@web.de References: Precedence: bulk X-Mailing-List: linux-next@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:zv8+gy7mTdVJl15MxdX4sL9WGdUY/zbfyG6HYqg09Tw8hpLcLX2 dsP8PyDFSUM6bWKRC5TdBTSGhTkigJOFWANI+MAq4nqSLdk4IFumDWDezet6RM365ZLbZCH oRMcsdl3TdpTt4rJVUFTlL/u+dmn3SHCBdKzaJk0JT73yqpMJ0GCAOHhQrcH3NeWKzLqqVr ffK7P9an+0Z2sJmnV86BQ== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:Gi1SpdleASw=;7+28aE3MJiMF+90mNdY1GirbARH FFX7Dn15YGKT0ww+MuXFzeW3TSyzRT9+XeX5nSz4swDgt72cygAB3W8EudqAcCd+LaoxXiw1A rE+jjaptFg1JyC6ZzHjxQDb0EIuZqpeCjZ23MftwYJB96COu79dvTe0lCmoFzRxl0CiA70rxo uKSDc3dRmpnwak3w4A+IfxabJ4VhpYHgTi8Mh0XPrMcHXxrSKT3kpkbavJhCQG2mBXecJgm06 +rLIBCip/9lgO3tBQluDswsuR/TxdmT71nEm6iNx3Ed0auHjxvhi6T88B0afP8su8GJXHAKPB 4qyib4/KqOgIuEBCpkOe2rnOnvwvLI2WRuyLXZDgLGpwhraJsvztnU10mi7fDDThdhCqgh6Tb CRadO5OArHEhnjG2TKZQoCWn/sKUFnWyg/Vd1NSJidhjQjnb067CTFv4OI60pVvx4w6VmbANk KoS3x++WiuQok1myQlCuEzEaA7R64lesOkgSTj4Ak10YNLI7xlGLFKHN+mM6r1nWxCZUgFhF1 purgDNN1IaB5FD3TQHH8+tNisNvLW9bO5TjY4hK4e+nier6fpxdv00MXyzidGzkEiMEJ+S++R g1XGHk97WGPzTO+OgBJHzEwrVsNCcJi0TdX3kBm3qooyg22mjK1QooHXsRuEEdozjg5bG8jvr M/ztO3I1EEBPulq8j63YToTDPIbJrvockq16JEu8HNHDUsC5i3zrY1qI4fC+XMeyQlih4MZJz ZfZFVh6/y5YKQnwHvcWgx2D8SV1XYUwObm40cf321QCfmgteOy/6G4vveVfSWZMoql2TEAMzN 980HAvl0QPgv/rwwgEUXbWG5bZlRabxg/VI3+q45oOjOmFbseVuNaVHc8b32yWfaW8qhz60KN h/Qbun8Tz2/PFRovtH0TnrQkcwdQvEBYy5FVv+QzJZfP0lURaALuu+vLBsEtH2t0YedTEY39t 3Rt7CmwAMWr+ie0II0FD1D2oE70NtSMORj1VPueVMEp3siaCC2ihL9Gr5IiRnVUBq9fYrm1nt YkSE1+g55kks7COUnLmGZDtBDZwFyaoo6TJqxrqYEW95u7xssODlAmFjY+073VFzBaxslBetI swDxyd5XJ60W5GyHi0dJiIpxp9ZQ8uwMjckb+EXMW4N/TsjEfpHhBE32b+fmCKHYmuYnQCpsd a/t0yL0ZwmiP1l6FuKwykTY89y4D0AAdPP4S25M1cq7mU+M1qLPW34XgoJ5Q4R/k/bmGT3FcQ HMPU1yBIZkPpVGSSUZjvOekexXMeH5jui/P9MSyGyMNX5HldMC+gsF58c5T8otXseK0qOq9AV 51RB8kpzL6csQvzqvI5E/0yrDOp3WRviFZnvJdX4QPOAtqL+aWe+BkAlaH22OonmK4TrzwL3J +U5LJx71Ja1QC3Aigwl3B9IyEVExzboAVV1dCPjGCXx0YZRdoAAsfHM9luz3FFKEgnfldMso/ /g4fZAtW1q3IkY+/uhHJLHrPJ5bWAPnA0iiwT1YOyK6rQPXS2iHrhlnm8OYz+XXJM+nMj6rJf rOqcIv96EB2KhIcLBLawv2qZ7yjAOsDEEV3W+oNgyNnnlEbWuS63xuafoAeeAQmvdsJd3UrSG loy2F92ZkgQz6C6u2AZUwerPX3xHWY5rRJ472hS3YcAT5Uj/p73MelstbepZm7ZyGh73eFmOg nfBMbcMZJr+lcfXKNctSjjYd2OCzz6CvSUKO6HrCbWNj/GSAr4DOW/MRvYX1Q0YSXDj6GH+OA oROzHq3Rhccv9bmujbcfRGqy2uXhfyTSRFW0x++KWJ9J5aWdg24tbuS34Kif7jhgPIqgD3RXF FLjgM8t12Fe7ECfqlq5TuT/jAG6UY3Rf6x2A1DYviPVS+Qc2+MC66VOUjxJOW/PUe6NIqyxGQ tiI2lqMA295oMxpv+z8+9fUepkK/5TWP+Z1C0BNtmo14aN0OlVuzyHa/ujQPdeYCHzZm+M0m2 j1Phv59H/FSaDSaJLyTSDTI/zGipr5itaQKTFzxWOtVGDxyHOFS4uz4WRBP7Bku9zDhoo7Q5F YW2HX9LtjnZ9SJDdOfSdfNHRQTtPoepYDlfsLOQqksIc2eSfcljRq3EZOgSNY2IaoBYbDst0J OIlEevOrBSj8Kep+L5f6swlA2YxSSSOe3JGCGpJFVLsDSmufulQ9gwxvaPWerEIbWq0gYhgma kDK3rhgLEaESRTuGVdmzHGbwDC8F01rm0a/7LVDLEqsi8JHVqFFCEbmSkNNNp7MnH9gsPbS17 PkCxBYa4v1jh/0M4s0IhQIdvFWfalDip2Y8u6g7gkVRuE4G+AJ/LEz2BKtt60Hn2gtzBHkIYq IWOt7f+KA6Ga1b8dcg3N65JTh2gdSful6mZ7vNBopnCdIySa2wWW0dd+eUOxomN2dSCwOVjsu gmdGr14CdGg2njEwzqgOL+Kmv8Cd7lrCdEO1qSzD0fXQyChpXkn/UQv3vHAJUqwxOq/qMyhoT ip7XJVZ0oj6XxhsTtwkfT7jVPq4S71CO+Pc5kvin8zasG6KmSnPiz99Z1YxJ1Kp3AsUNihviE eMl3ap/5inBDa1jz6XD10uG8YGIudg6jd8uxJ7/6rvA4G/NIMXGrvclo6vu0Z81ilMBiyb2fr FQXMThwL1bKHh4MaYylNMqUCAUcXbANesYQRJWQ7kfdM1goWWMbv2x2AZOgK07wyejrrCrcnJ o6PAsEN8GD8urSEVxmyvsZE1q2B08yhHHiftSRHFSm8HRV5bpa/mGQtG81FFXEc3OMP8dHToz 8lGXmDzOe6vX8QHDV9qy2wDXGi0+uLY0NJLnFtK1JZuLDxJH17MtYztnuKuBcZvW30aKORMO3 J8n/DxHo9/AlE3EhS3hlrHdfcTy5mPETwBUBX736f24Otc2IwvpmGzSb8Kl1jKeLF10u23QBZ /qGE9y0OX9Wb4QsRgn1unSRfpyd09Ymf1oCufqOemry0Nc84kH1Wj7GaINvIWGoXo9NrYZcPm HnzCxBwjBj+PlDPPQI1DOP88QS0ZV37ggZkCNiJlYmdhQHTxulvzan+tOPmP8sTpXYsy+pDq8 KN00kro6b7z9la0PWdMRZI7Pa26Tcv31ARKXzszKPWd3RYUnBIpJ6X/oh7UNppvTn2EJxObR+ NFUbrAH6wlff8= >=20 > I'll now start a bisection where I revert 76a853f86c97 where possible in > order to find the remaining bugs. > The second bisection (from v6.15-rc6 to next-20250512) is finished now: This commit leads to lockups and kernel panics after watching ~5-10min of a youtube video while compiling a kernel, reverting it in next-20250512 is possible: 76a853f86c97 ("wifi: free SKBTX_WIFI_STATUS skb tx_flags flag") This commit leads to the boot failure, reverting leads to the compile error it is supposed to fix: 97f4b999e0c8 ("genirq: Use scoped_guard() to shut clang up") So are these kernel bugs or a clang bugs? Bert Karwatzki