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.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 33D92C433F5 for ; Tue, 5 Apr 2022 04:37:51 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4KXZd94bnXz3bZB for ; Tue, 5 Apr 2022 14:37:49 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=lhB7hyRX; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=2604:1380:4641:c500::1; helo=dfw.source.kernel.org; envelope-from=bugzilla-daemon@kernel.org; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=lhB7hyRX; dkim-atps=neutral Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) (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 4KXZcM2Kwrz2xfN for ; Tue, 5 Apr 2022 14:37:07 +1000 (AEST) 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 DF6DB6143A for ; Tue, 5 Apr 2022 04:37:03 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 4B77AC340F0 for ; Tue, 5 Apr 2022 04:37:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1649133423; bh=SLsKtQeZsqWCNILaKwlu2uQkdcYGm77RsEFY5vB2aYs=; h=From:To:Subject:Date:From; b=lhB7hyRXW4C9r1fOgAoouHKBE5HWtn4l3U63LEeJMWY/ZR5EDFkOICSBD21UzFnwl M+ltJX40exH2meUjkvAJkVaNmugvCQ1pexwple6gOAQPOBLlcLO8+1jjBt9EBowmU+ LEj7xgoEcxBe9VayCYrgEB3/38YIP51mZ3N21Pkd/e4bKeUhynFjwuk81RAXPSnhrq vuDbEOknzt63hpW68hM3j8UpwbPo0atKyKf9Bh1iWzRx4aaJIc6fZvW/NMOy+IBth+ cuSiFHlIMkcCvxwn5+CtfUSvAytkgP+A7X0zglTSt+h2ibwx0VmI2IDkGNg0o8b/m0 0zoUZ9qi0+oUQ== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 28D09C05FD2; Tue, 5 Apr 2022 04:37:03 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linuxppc-dev@lists.ozlabs.org Subject: [Bug 215803] New: ppc64le(P9): BUG: Kernel NULL pointer dereference on read at 0x00000060 NIP: do_remove_conflicting_framebuffers+0x184/0x1d0 Date: Tue, 05 Apr 2022 04:37:02 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: AssignedTo platform_ppc-64@kernel-bugs.osdl.org X-Bugzilla-Product: Platform Specific/Hardware X-Bugzilla-Component: PPC-64 X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: zlang@redhat.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: platform_ppc-64@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 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=3D215803 Bug ID: 215803 Summary: ppc64le(P9): BUG: Kernel NULL pointer dereference on read at 0x00000060 NIP: do_remove_conflicting_framebuffers+0x184/0x1d0 Product: Platform Specific/Hardware Version: 2.5 Kernel Version: 5.18-rc1 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: PPC-64 Assignee: platform_ppc-64@kernel-bugs.osdl.org Reporter: zlang@redhat.com Regression: No When I test latest linux kernel, it panic[1] directly when I just tried to boot it on ppc64le. I hit it several times on different ppc64le machines, s= ame call trace. Due to I only hit this panic on ppc64le, so I report this bug to ppc64 to get more review. The linux kernel HEAD is (nearly 5.18-rc1): commit be2d3ecedd9911fbfd7e55cc9ceac5f8b79ae4cf Author: Linus Torvalds Date: Sat Apr 2 12:57:17 2022 -0700 Merge tag 'perf-tools-for-v5.18-2022-04-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux [1] [ 18.785170] RPC: Registered named UNIX socket transport module.=20 [ 18.785214] RPC: Registered udp transport module.=20 [ 18.785235] RPC: Registered tcp transport module.=20 [ 18.785256] RPC: Registered tcp NFSv4.1 backchannel transport module.=20 [=20=20=20=20=20=20 OK=20=20=20=20=20 ] Mounted=20=20=20=20=20=20=20=20=20 RPC Pipe File System=20=20=20 .=20 [=20=20=20=20=20=20 OK=20=20=20=20=20 ] Reached target=20=20=20=20=20=20=20=20=20 rpc_pipefs.target=20=20=20 .=20 [ 18.830598] fb0: switching to ast from OFfb vga=20 [ 18.830646] BUG: Kernel NULL pointer dereference on read at 0x00000060=20 [ 18.830669] Faulting instruction address: 0xc0000000009fd974=20 [ 18.830692] Oops: Kernel access of bad area, sig: 7 [#1]=20 [ 18.830712] LE PAGE_SIZE=3D64K MMU=3DRadix SMP NR_CPUS=3D2048 NUMA Power= NV=20 [ 18.830734] Modules linked in: ast(+) i2c_algo_bit sunrpc drm_vram_helper drm_ttm_helper ttm drm_kms_helper fb_sys_fops syscopyarea sysfillrect ofpart sysimgblt ses enclosure powernv_flash ipmi_powernv at24 ipmi_devintf ext4 opal_prd mtd scsi_transport_sas ibmpowernv regmap_i2c ipmi_msghandler mbcac= he jbd2 drm fuse drm_panel_orientation_quirks xfs libcrc32c sd_mod t10_pi crc64_rocksoft_generic crc64_rocksoft crc64 sg i40e vmx_crypto aacraid=20 [ 18.830875] CPU: 0 PID: 963 Comm: kworker/0:2 Not tainted 5.17.0+ #1=20 [ 18.830906] Workqueue: events work_for_cpu_fn=20 [ 18.830930] NIP: c0000000009fd974 LR: c0000000009fd96c CTR: 0000000000000000=20 [ 18.830961] REGS: c0000001156db740 TRAP: 0300 Not tainted (5.17.0+)=20 [ 18.830981] MSR: 9000000000009033 CR: 480282= 22=20 XER: 00000000=20 [ 18.831022] CFAR: c00000000022a9ec DAR: 0000000000000060 DSISR: 00080000 IRQMASK: 0=20=20 [ 18.831022] GPR00: c0000000009fd96c c0000001156db9e0 c000000002d06200 0000000000000023=20=20 [ 18.831022] GPR04: 0000000000000000 c0000001156db730 c0000001156db728 0000000000000000=20=20 [ 18.831022] GPR08: 0000000000000027 c000000002be6200 c000000115751000 0000000000000001=20=20 [ 18.831022] GPR12: 0000001ff1900000 c000000005120000 c000000000194608 c00020001119b000=20=20 [ 18.831022] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000=20=20 [ 18.831022] GPR20: 0000000000000000 0000000000000000 c00000000144c560 c00000000144c588=20=20 [ 18.831022] GPR24: 0000000000000001 00000000000a0000 c0080000166c1200 c00000010f0dbf60=20=20 [ 18.831022] GPR28: c000000002d65038 c00020001ecc0380 0000000000000000 c000000002d64f40=20=20 [ 18.831234] NIP [c0000000009fd974] do_remove_conflicting_framebuffers+0x184/0x1d0=20 [ 18.831267] LR [c0000000009fd96c] do_remove_conflicting_framebuffers+0x17c/0x1d0=20 [ 18.831299] Call Trace:=20 [ 18.831314] [c0000001156db9e0] [c0000000009fd96c] do_remove_conflicting_framebuffers+0x17c/0x1d0 (unreliable)=20 [ 18.831351] [c0000001156dbab0] [c0000000009fdf34] remove_conflicting_framebuffers+0x64/0x160=20 [ 18.831385] [c0000001156dbb00] [c008000014ed05a8] drm_aperture_remove_conflicting_framebuffers+0x80/0xf0 [drm]=20 [ 18.831439] [c0000001156dbb50] [c0080000166b0238] ast_pci_probe+0x60/0x1= 30 [ast]=20 [ 18.831474] [c0000001156dbb90] [c0000000009b39c8] local_pci_probe+0x68/0= x110=20 [ 18.831508] [c0000001156dbc10] [c00000000017f038] work_for_cpu_fn+0x38/0= x60=20 [ 18.831540] [c0000001156dbc40] [c000000000185608] process_one_work+0x348/0x850=20 [ 18.831574] [c0000001156dbd30] [c000000000185d70] worker_thread+0x260/0x= 500=20 [ 18.831605] [c0000001156dbdc0] [c000000000194748] kthread+0x148/0x150=20 [ 18.831627] [c0000001156dbe10] [c00000000000cbf4] ret_from_kernel_thread+0x5c/0x64=20 [ 18.831661] Instruction dump:=20 [ 18.831679] 7d710120 7d708120 4e800020 e8df0000 7fc407b4 7f45d378 7ec3b3= 78 f8810068=20=20 [ 18.831716] 38c601f0 4b82d03d 60000000 3d22ffee 3929ee90 e881= 0068 7c2a4800=20=20 [ 18.831755] ---[ end trace 0000000000000000 ]---=20 [ 18.958634]=20=20 [ 18.958701] kworker/0:2 (963) used greatest stack depth: 7056 bytes left= =20 [=20=20=20=20=20=20 OK=20=20=20=20=20 ] Started=20=20=20=20=20=20=20=20=20 Security Auditing Service=20=20=20 .=20 Starting=20=20=20=20=20=20=20=20=20 Record System Boot/Shutdown in UTMP --=20 You may reply to this email to add a comment. 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