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 Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0A646C00140 for ; Fri, 29 Jul 2022 02:51:27 +0000 (UTC) Received: from [127.0.0.1] (helo=sfs-ml-2.v29.lw.sourceforge.com) by sfs-ml-2.v29.lw.sourceforge.com with esmtp (Exim 4.94.2) (envelope-from ) id 1oHG60-0005DO-7I; Fri, 29 Jul 2022 02:51:25 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-2.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1oHG5y-0005DI-F7 for linux-f2fs-devel@lists.sourceforge.net; Fri, 29 Jul 2022 02:51:23 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=MIME-Version:Content-Transfer-Encoding:Content-Type :References:In-Reply-To:Message-ID:Date:Subject:To:From:Sender:Reply-To:Cc: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=nPeIeKssccgcymXfSwb89sxYDS8GKFleGsJMeAUBMhg=; b=K2v2fcJWbftbrqFM/hsfJNuWPn uhku0TAukqk+rwN/qJjc5wp5MRT1FVb4GiQW/6yroEHyGw6kRsGZOQIoPezzqG9MBnVikA61Rvzrs pqej/3tr2vm6Tv8srqb3oSbmycoa3J9bKs3p6NFa8Tff8RNdGkIuF3Flca9bHSuNVViw=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=MIME-Version:Content-Transfer-Encoding:Content-Type:References: In-Reply-To:Message-ID:Date:Subject:To:From:Sender:Reply-To:Cc:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=nPeIeKssccgcymXfSwb89sxYDS8GKFleGsJMeAUBMhg=; b=bCbWUSTZysuF3j/+LrO9pyNj2d KevbNyX/IPO4x0QSDejtENcylAkbwIhSXgSWV8845pPpy1NN8u2RPDlHu8GApoGG1ABWWBcdVhw5r D1PnnCBnMIqVT0xyQ0nyg4oHGerr1mtBbwxq84jpbmtTDH6Lxkwqb5bukGE45p/FlITs=; Received: from dfw.source.kernel.org ([139.178.84.217]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.94.2) id 1oHG5v-0002bd-8B for linux-f2fs-devel@lists.sourceforge.net; Fri, 29 Jul 2022 02:51:23 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D6B4361DEC for ; Fri, 29 Jul 2022 02:51:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id A7F24C433D6 for ; Fri, 29 Jul 2022 02:51:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1659063069; bh=nPeIeKssccgcymXfSwb89sxYDS8GKFleGsJMeAUBMhg=; h=From:To:Subject:Date:In-Reply-To:References:From; b=aB1unUSHimXYdPthPMC0UTiirHe9WOH0fQxuRKQ69emelfiNK3OrMLcuaN2OMP43a P/10PsyhsBEpybjGvKp038q9RdWNfVZbwS1WH7Uk/+OYMghtv9TCf/2DJJXvg5lps5 hZA6LDFuU299BEbxG+GxspZCs4Iu9cHH7+Xv7rkcZzhEMB8y/GTLtm3guNiJtXkwqk ZFUEkKOQARFaqCH9zQsFoSObvqDzBKWExbNiouwE0Cddnb4kMJwlt338zF7k4C/Jth cWKrUa89i1TyrpjBxkCzZWI1aEXrcMbjR+38Ogsx5Bj0QlbQRiVVk9VeOerf+qUycR aY4rsu7k91COQ== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 8BD8CC433E6; Fri, 29 Jul 2022 02:51:09 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-f2fs-devel@lists.sourceforge.net Date: Fri, 29 Jul 2022 02:51:09 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo filesystem_f2fs@kernel-bugs.kernel.org X-Bugzilla-Product: File System X-Bugzilla-Component: f2fs X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: chao@kernel.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: filesystem_f2fs@kernel-bugs.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-Headers-End: 1oHG5v-0002bd-8B Subject: [f2fs-dev] [Bug 216050] f2fs_gc occupies 100% cpu X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net https://bugzilla.kernel.org/show_bug.cgi?id=216050 --- Comment #43 from Chao Yu (chao@kernel.org) --- (In reply to bernd_b from comment #42) > I added the dmesg output in the attachment but I fear there is nothing > useful to be found. [ 2443.069033] f2fs_get_lock_data_page i:205012000 [ 2443.069688] f2fs_get_lock_data_page i:205014000 [ 2443.070016] f2fs_get_lock_data_page i:205015000 [ 2443.070344] f2fs_get_lock_data_page i:205016000 [ 2443.070672] f2fs_get_lock_data_page i:205017000 [ 2443.071000] f2fs_get_lock_data_page i:205018000 Thanks a lot for helping to debug this bug, I guess the output looks useful, since at least we have found where it loops at. I have no idea why it loops here since it's an impossible case, I can make a patch to skip this loop, but I'm afraid that won't fix root cause... :( -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel