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=-1.0 required=3.0 tests=MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no 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 80085C10F14 for ; Sun, 6 Oct 2019 17:52:41 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 EE50220673 for ; Sun, 6 Oct 2019 17:52:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EE50220673 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=bugzilla.kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 46mWRB3VyxzDqND for ; Mon, 7 Oct 2019 04:52:38 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=kernel.org (client-ip=198.145.29.99; helo=mail.kernel.org; envelope-from=srs0=26xn=x7=bugzilla.kernel.org=bugzilla-daemon@kernel.org; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=bugzilla.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 46mWMB2WdDzDqMx for ; Mon, 7 Oct 2019 04:49:10 +1100 (AEDT) From: bugzilla-daemon@bugzilla.kernel.org To: linuxppc-dev@lists.ozlabs.org Subject: [Bug 205099] New: KASAN hit at raid6_pq: BUG: Unable to handle kernel data access at 0x00f0fd0d Date: Sun, 06 Oct 2019 17:49:07 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: AssignedTo platform_ppc-32@kernel-bugs.osdl.org X-Bugzilla-Product: Platform Specific/Hardware X-Bugzilla-Component: PPC-32 X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: erhard_f@mailbox.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: platform_ppc-32@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version cf_kernel_version rep_platform op_sys cf_tree bug_status bug_severity priority component assigned_to reporter cf_regression attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" https://bugzilla.kernel.org/show_bug.cgi?id=3D205099 Bug ID: 205099 Summary: KASAN hit at raid6_pq: BUG: Unable to handle kernel data access at 0x00f0fd0d Product: Platform Specific/Hardware Version: 2.5 Kernel Version: 5.4-rc1 Hardware: PPC-32 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: PPC-32 Assignee: platform_ppc-32@kernel-bugs.osdl.org Reporter: erhard_f@mailbox.org Regression: No Created attachment 285367 --> https://bugzilla.kernel.org/attachment.cgi?id=3D285367&action=3Dedit dmesg (kernel 5.4-rc1, PowerMac G4 DP) With lots of KASAN ppc fixes included in kernel 5.4-rc1 now, I am revisiting the issues of bug #204479. raid6 pq still reliably oopses: [...] [ 19.186966] BUG: Unable to handle kernel data access at 0x00f0fd0d [ 19.196913] Faulting instruction address: 0xf1692560 [ 19.235490] ohci-pci: OHCI PCI platform driver [ 19.236988] Oops: Kernel access of bad area, sig: 11 [#1] [ 19.255518] BE PAGE_SIZE=3D4K MMU=3DHash SMP NR_CPUS=3D2 PowerMac [ 19.265311] Modules linked in: ohci_pci(+) raid6_pq(+) zlib_inflate sung= em hwmon sungem_phy i2c_algo_bit sr_mod drm_kms_helper cdrom syscopyarea sysfillrect firewire_ohci sysimgblt ohci_hcd ehci_pci fb_sys_fops ttm firewire_core snd_aoa_i2sbus ehci_hcd crc_itu_t snd_aoa_soundbus snd_pcm snd_timer drm snd soundcore usbcore ssb uninorth_agp drm_panel_orientation_quirks pcmcia usb_common pcmcia_core agpgart [ 19.287432] CPU: 0 PID: 127 Comm: modprobe Tainted: G W=20=20=20= =20=20=20=20=20 5.4.0-rc1 #10 [ 19.298613] NIP: f1692560 LR: f16924e8 CTR: c023bcf4 [ 19.309692] REGS: e8d13730 TRAP: 0300 Tainted: G W=20=20=20=20= =20=20=20=20=20 (5.4.0-rc1) [ 19.320847] MSR: 02009032 CR: 28228822 XER: 0000= 0000 [ 19.332102] DAR: 00f0fd0d DSISR: 40000000=20 GPR00: e8d13988 e8d137e8 ee01b4a0 f16a5070 00000010 00000000 f16924e8 00000000=20 GPR08: f16a5070 00f0fd0d e7171aea e8d13a70 c023bcf4 0050fff4 00000060 00000050=20 GPR16: 00000040 f16a5000 00000012 eb28d000 eb28c000 00000070 00000060 00000050=20 GPR24: 00000040 00000030 00000020 00000010 e8d13a38 eb28d010 eb28c010 00000000=20 [ 19.388060] NIP [f1692560] raid6_altivec8_gen_syndrome_real+0x3c8/0x488 [raid6_pq] [ 19.399417] LR [f16924e8] raid6_altivec8_gen_syndrome_real+0x350/0x488 [raid6_pq] [ 19.405058] usb 1-1: new high-speed USB device number 2 using ehci-pci [ 19.410774] Call Trace: [ 19.410786] [e8d137e8] [00001032] 0x1032 (unreliable) [ 19.410824] [e8d139d8] [f1692654] raid6_altivec8_gen_syndrome+0x34/0x58 [raid6_pq] [ 19.410857] [e8d13a08] [f15c83c0] init_module+0x3c0/0x518 [raid6_pq] [ 19.460942] Apple USB OHCI 0001:10:18.0 disabled by firmware [ 19.468239] [e8d13af8] [c0005820] do_one_initcall+0xb8/0x36c [ 19.468264] [e8d13bc8] [c0109480] do_init_module+0xa8/0x2c4 [ 19.502777] [e8d13bf8] [c010c2e4] load_module+0x2b68/0x2d24 [ 19.514192] [e8d13df8] [c010c704] sys_finit_module+0x100/0x140 [ 19.525556] [e8d13f38] [c001a274] ret_from_syscall+0x0/0x34 [ 19.536910] --- interrupt: c01 at 0x35e2c4 LR =3D 0x4e67c4 [ 19.559299] Instruction dump: [ 19.570504] 1304c4c4 7d2048ce 39210090 1325ccc4 7d6048ce 1346d4c4 812100= 88 1367dcc4=20 [ 19.581997] 7d11a8ce 115f5b06 116b5800 8141008c <7c0048ce> 392100a0 7d80= 48ce 392100b0=20 [ 19.593571] ---[ end trace 5e7216580d039a39 ]--- --=20 You are receiving this mail because: You are watching the assignee of the bug.=