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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 919F2C25B0E for ; Tue, 16 Aug 2022 15:45:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:Subject:Message-ID:Date:From: In-Reply-To:References:MIME-Version:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=LMXCA6i9jOLIdRAhWGN3c+1kvkQHBjUpu5LU7VP9DnI=; b=ax7qEmbDsQrkxT Ucm5ibnHKphRMS7hLmoJrkupoMrsedi6ojGPjVVvSLjEQzlqrcja4K5pH2TONEhEjmrpz0x0N519q /3k61s+AAgrGCrLdLpSRoJMpKl+6OGvAhyhdMRF+w+hp7Jk7/Z7bjH2F6ec2Wvr5cKGM2CYxEtMzo HR4U3m3MxXrTyCNhtURSMktLz8Lce0Z8XCxHH6pzRWB+ozoXKorPiazSNnFsGogalALvwOLmg95Kp cE5h3O+NO7ycTnljdFq0989UCZTn8HvgkWChZstrRefJPscYS4hON4RBmBit9Yhs7DknRAx0Uwavy D58NCSl5hAdaIaUvt7wQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oNykY-0047Xr-Uo; Tue, 16 Aug 2022 15:45:02 +0000 Received: from mail-yw1-x1136.google.com ([2607:f8b0:4864:20::1136]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oNykT-0047OK-DR for linux-riscv@lists.infradead.org; Tue, 16 Aug 2022 15:45:01 +0000 Received: by mail-yw1-x1136.google.com with SMTP id 00721157ae682-33387bf0c4aso56688437b3.11 for ; Tue, 16 Aug 2022 08:44:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=brainfault-org.20210112.gappssmtp.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc; bh=IwLSrviK0+Pq9jADrUgpgFdsN8GRjOTIKav+qj76JZg=; b=gTIiwzUkBthrsVkhuOQJWuS3lEyBbxoFzp+eYQiKwZgg157Zw8JhvYpl3TAI+Ynrjo LEO+E4DUUe7Eu28yVcCG7R1VYN5Fvl5OtblpaWUMpcQp1mNdcjTM/eZKnns2suXd6saF iofCvhmkYzry0QYEuNmWeI1/HLv1zK2eegdFFoCuK9MhZfuY9vy+3hCthyotWfN3cifx obofCRIAC+9oSqeFIHCRZd6MvUIVH24EAQ9vu5/5Y4sRghJBVekOkxtapj8xScj77W+T tJ68FU95txz0k0S4wBribjLvrJ8El9rXxZS/fgKjD3+ex+NTuJeruSmfkjOhHRlDOV7R VWbw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc; bh=IwLSrviK0+Pq9jADrUgpgFdsN8GRjOTIKav+qj76JZg=; b=NxyYKPhqvgja+RX7/XRyJ+7tcjy7stBTSjZ/JZEYIHmc8VNEJNDp088D14RH8/zk8r VI2FlvrnXvTZvNx7ZNpYCL2EO5+6K5EAIrUkuOubZASCPK3w3kRaHTPoRadqUOQJ4U0y aMPKFN9AP1yIYnx2Y5zFBCTWvf62NAUE60cFeir8f5WioxK7RucGlU99/S9mxGGXUQuz UJrAPy3avYpSIcVoIV6qLKCne7KORikbRRg9Yo+6bgIx7iz2E/YwfF7+D7JWYUpT9ABt 1j69Ga3T9f84xKBB6xb3qVWStcuVCySOm7pE+cLljQjjjFbknBl0HkToudqMybJJh12B VXWQ== X-Gm-Message-State: ACgBeo0qiJqP93sliMLWVdO8iKZBnrPEqeIwfcDoE5KktYW6TcoeDRrr JMmFG5ETcWF2G8ipzNU/XQH3esTQz8VKTKBpt2YFpGL2chA= X-Google-Smtp-Source: AA6agR7sUjrS16ND324nElMshggIwjo0g2ODxZ4TZa9qKL1LJjXG8dkI7EkzTN+JrtkEJQzNUpUUIlilC6xiBmmqCLI= X-Received: by 2002:a05:6902:102a:b0:676:d49f:9fa9 with SMTP id x10-20020a056902102a00b00676d49f9fa9mr16741009ybt.619.1660664692815; Tue, 16 Aug 2022 08:44:52 -0700 (PDT) MIME-Version: 1.0 References: <728ecbd5-975a-168e-efab-3c0030be21d5@w6rz.net> In-Reply-To: <728ecbd5-975a-168e-efab-3c0030be21d5@w6rz.net> From: Anup Patel Date: Tue, 16 Aug 2022 21:14:41 +0530 Message-ID: Subject: Re: Regression on Linux 6.0-rc1 To: Ron Economos Cc: linux-riscv@lists.infradead.org, conor.dooley@microchip.com, palmer@rivosinc.com, daolu@rivosinc.com, heiko@sntech.de X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220816_084457_705584_5034C9C2 X-CRM114-Status: UNSURE ( 9.89 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 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 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Tue, Aug 16, 2022 at 6:29 PM Ron Economos wrote: > > The following Oops occurs on Linux 6.0-rc1 on the HiFive Unmatched. This > is with gcc 11.2.0 and binutils 2.38 (from > https://github.com/riscv-collab/riscv-gnu-toolchain). > > Begin: Loading essential drivers ... [ 14.774748] Unable to handle > kernel paging request at virtual address ffffffff813cdc90 > [ 14.781976] Oops [#1] > [ 14.784163] Modules linked in: raid6_pq(+) libcrc32c raid1 raid0 > multipath linear da9063_regulator > [ 14.800763] CPU: 1 PID: 248 Comm: modprobe Not tainted 6.0.0-rc1 #1 > [ 14.806747] Hardware name: SiFive HiFive Unmatched A00 (DT) > [ 14.812307] epc : jump_label_module_notify+0x1bc/0x270 > [ 14.817430] ra : jump_label_module_notify+0x19a/0x270 > [ 14.822555] epc : ffffffff801b804c ra : ffffffff801b802a sp : > ffffffc80424bc0 > [ 14.829766] gp : ffffffff81a2d7b8 tp : ffffffd895ae1980 t0 : > ffffffd88067e20 > [ 14.836975] t1 : 6f1d98585898183f t2 : ffffffdbfed19e58 s0 : > ffffffc80424bc0 > [ 14.844185] s1 : ffffffff813cdc88 a0 : 0000000000000000 a1 : > 000000000000000 > [ 14.851394] a2 : 0000000000000000 a3 : ffffffff01c77000 a4 : > 000000000000000 > [ 14.858602] a5 : 0000000000000000 a6 : 0000000000ff0000 a7 : > 000000000000021 > [ 14.865812] s2 : ffffffff01c73000 s3 : ffffffff01c740c0 s4 : > ffffffd88067e80 > [ 14.873021] s5 : ffffffff01c73010 s6 : 0000000000000dc0 s7 : > ffffffff813cdf0 > [ 14.880230] s8 : ffffffd88067e282 s9 : ffffffff01c73008 s10: > 000000000000002 > [ 14.887439] s11: ffffffc80424bd50 t3 : e26cb9592a0e8a69 t4 : > 000000800000000 > [ 14.894649] t5 : 000000ff00000000 t6 : ffffffd8819ac4a0 > [ 14.899945] status: 0000000200000120 badaddr: ffffffff813cdc90 cause: > 000000f > [ 14.907853] [] > blocking_notifier_call_chain_robust+0x72/0x8 > [ 14.915061] [] load_module+0x17bc/0x1e98 > [ 14.920531] [] __do_sys_finit_module+0x98/0x100 > [ 14.926611] [] sys_finit_module+0x24/0x30 > [ 14.932170] [] ret_from_syscall+0x0/0x2 > [ 14.937680] ---[ end trace 0000000000000000 ]--- > Segmentation fault > > Manually bisected to this commit: > > arch/riscv: add Zihintpause support > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8eb060e10185cfc97ef0200d197ec246ba0f9f8c We see this crash for any loadable module which uses cpu_relax(). In fact, KVM RISC-V module loading is also broken. Regards, Anup _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv