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X-CSE-ConnectionGUID: fqsFwxndQ7Sm5UVfLblnpQ== X-CSE-MsgGUID: QWhzgNeKQpC/T/TH3jxjJA== X-IronPort-AV: E=McAfee;i="6600,9927,11034"; a="7447815" X-IronPort-AV: E=Sophos;i="6.07,180,1708416000"; d="scan'208";a="7447815" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Apr 2024 15:05:35 -0700 X-CSE-ConnectionGUID: x+OpkRLUQTez6KbWLJF5pA== X-CSE-MsgGUID: J/801aP4Tq6P8GnZL+h08Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,180,1708416000"; d="scan'208";a="23593501" Received: from agluck-desk3.sc.intel.com (HELO agluck-desk3) ([172.25.222.105]) by fmviesa004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Apr 2024 15:05:35 -0700 Date: Thu, 4 Apr 2024 15:05:33 -0700 From: Tony Luck To: Borislav Petkov , Yazen Ghannam , Miaohe Lin , Naoya Horiguchi , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Machine check recovery broken in v6.9-rc1 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 889F84000A X-Stat-Signature: utn9aw5r1hbhhaq9676yrr4y1uxc3hsi X-HE-Tag: 1712268336-262990 X-HE-Meta: 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 j4S9p18H ztg4emJAES/mz8nlc6d8Sz40L90gEx4j4HVr4Mj5lk/1wxGglOs8Nx40eRJ6H+YnUDiSQPikcPdY+1Ld6tBtiNY7cKijT1bv3gFw5fK2Izxj5FKj2fuh0ezYRyQKO8iHB7Y+uM7wXp8N859E= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: v6.8 works. v6.9-rc1 fails with: kernel BUG at include/linux/swapops.h:119 117 static inline unsigned long swp_offset_pfn(swp_entry_t entry) 118 { 119 VM_BUG_ON(!is_pfn_swap_entry(entry)); 120 return swp_offset(entry) & SWP_PFN_MASK; 121 } I've messed up the bisection three times now and ended up pointing at some innocent looking commit. So I wonder if anyone else has noticed and tried debugging. -Tony