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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A69FDC07E9D for ; Tue, 27 Sep 2022 00:47:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229730AbiI0ArJ (ORCPT ); Mon, 26 Sep 2022 20:47:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55028 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229459AbiI0ArF (ORCPT ); Mon, 26 Sep 2022 20:47:05 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7F7BD868B0 for ; Mon, 26 Sep 2022 17:47:04 -0700 (PDT) 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 CAE8960B2F for ; Tue, 27 Sep 2022 00:47:03 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 23D0BC433C1 for ; Tue, 27 Sep 2022 00:47:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1664239623; bh=P7zbxhoBojY0tWdmEkQKecz53gV9TRVaR357H16zOxM=; h=From:To:Subject:Date:In-Reply-To:References:From; b=eNmUA9LOofZ3TbW4MdM76wRiWcQjwfVpx/I5YnZL+7O8iBoYrpfXd+d+FUPOlamEv AtsF1kKsdWBw9sGI3LNAiivNh+B9uE4TTOOcT+Vq/hdUendnjl19ckN0Wor6g03yff WuID9AsHSQ+uC08xYpqKlVn9/SJaqYZXYTrSoAnNcWk6HXIpcQyTQqESIYKrM1pTaF szrfmD5CiUUxRzMVVjOWx4HlrIZ7HNTPLRHfopV3+VB7we30v5/8kQMfhjUDr/atjq wVy+K9JmgA1fBuQVI2qymUvCoSgDt+mgnzEs5gvLK10tb5K7My+cgXjbhOt4k/hv8H DUw2qKIiIsxVw== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 0A2B9C433E7; Tue, 27 Sep 2022 00:47:03 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-ext4@vger.kernel.org Subject: [Bug 216529] [fstests generic/048] BUG: Kernel NULL pointer dereference at 0x00000069, filemap_release_folio+0x88/0xb0 Date: Tue, 27 Sep 2022 00:47:02 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo fs_ext4@kernel-bugs.osdl.org X-Bugzilla-Product: File System X-Bugzilla-Component: ext4 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: fs_ext4@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: 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 Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=3D216529 --- Comment #2 from Zorro Lang (zlang@redhat.com) --- (In reply to Theodore Tso from comment #1) > On Sun, Sep 25, 2022 at 11:55:29AM +0000, bugzilla-daemon@kernel.org wrot= e: > > https://bugzilla.kernel.org/show_bug.cgi?id=3D216529 > >=20 > >=20 > > Hit a panic on ppc64le, by running generic/048 with 1k block size: >=20 > Hmm, does this reproduce reliably for you? I test with a 1k block > size on x86_64 as a proxy 4k block sizes on PPC64, where the blocksize > < pagesize... and this isn't reproducing for me on x86, and I don't > have access to a PPC64LE system. Hi Ted, Yes, it's reproducible for me, I just reproduced it again on another ppc64le (P8) machine [1]. But it's not easy to reproduce by running generic/048 (ma= ybe there's a better way to reproduce it). And this time the call trace is a little different, it might be a folio [mm] related bug? Maybe I should cc linux-mm list to get more checking? Thanks, Zorro [ 1254.857035] run fstests generic/048 at 2022-09-26 12:12:26=20 [ 1257.651002] EXT4-fs (sda3): mounted filesystem with ordered data mode. Q= uota mode: none.=20 [ 1257.666754] EXT4-fs (sda3): shut down requested (1)=20 [ 1257.666773] Aborting journal on device sda3-8.=20 [ 1257.696046] EXT4-fs (sda3): unmounting filesystem.=20 [ 1259.216580] EXT4-fs (sda3): mounted filesystem with ordered data mode. Q= uota mode: none.=20 [ 1273.042962] restraintd[2251]: *** Current Time: Mon Sep 26 12:12:45 2022= =20 Localwatchdog at: Wed Sep 28 11:54:44 2022=20 [ 1333.319238] restraintd[2251]: *** Current Time: Mon Sep 26 12:13:45 2022= =20 Localwatchdog at: Wed Sep 28 11:54:44 2022=20 [ 1394.828503] restraintd[2251]: *** Current Time: Mon Sep 26 12:14:47 2022= =20 Localwatchdog at: Wed Sep 28 11:54:44 2022=20 [ 1403.799008] BUG: Kernel NULL pointer dereference at 0x00000062=20 [ 1403.799218] Faulting instruction address: 0xc00000000068edfc=20 [ 1403.799228] Oops: Kernel access of bad area, sig: 11 [#1]=20 [ 1403.799233] LE PAGE_SIZE=3D64K MMU=3DHash SMP NR_CPUS=3D2048 NUMA pSerie= s=20 [ 1403.799241] Modules linked in: ext4 mbcache jbd2 bonding tls rfkill sunr= pc pseries_rng drm fuse drm_panel_orientation_quirks xfs libcrc32c sd_mod t10_= pi sg ibmvscsi ibmveth scsi_transport_srp vmx_crypto=20 [ 1403.799280] CPU: 4 PID: 82 Comm: kswapd0 Kdump: loaded Not tainted 6.0.0= -rc7 #1=20 [ 1403.799293] NIP: c00000000068edfc LR: c00000000068f2a8 CTR: 0000000000000000=20 [ 1403.799300] REGS: c00000000a44b560 TRAP: 0380 Not tainted (6.0.0-rc7)= =20 [ 1403.799308] MSR: 800000000280b033 CR: 28028244 XER: 00000001=20 [ 1403.799327] CFAR: c00000000068ede4 IRQMASK: 0=20=20 [ 1403.799327] GPR00: c00000000068f2a8 c00000000a44b800 c000000002cf1700 c00c0000001c0bc0=20=20 [ 1403.799327] GPR04: c00000000a44b860 0000000000000002 00000003fb290000 c000000002de7dc8=20=20 [ 1403.799327] GPR08: 0000000ae4f08f42 0000000000000000 c00c0000001c0bc0 0000000000008000=20=20 [ 1403.799327] GPR12: 00000003fb290000 c00000000ffcc080 c000000000194288 c0000003fff9c480=20=20 [ 1403.799327] GPR16: c000000069d30050 0000000000000007 0000000000000000 0000000000000000=20=20 [ 1403.799327] GPR20: 0000000000000001 c00000000a44b8f8 c00000000146bad8 5deadbeef0000100=20=20 [ 1403.799327] GPR24: 5deadbeef0000122 c000000069d30000 c00000000a44bc00 c00000000a44b8e8=20=20 [ 1403.799327] GPR28: c00000000a44b860 c00c0000001c0bc0 0000000000000002 0000000000000002=20=20 [ 1403.799413] NIP [c00000000068edfc] drop_buffers.constprop.0+0x4c/0x1c0=20 [ 1403.799423] LR [c00000000068f2a8] try_to_free_buffers+0x128/0x150=20 [ 1403.799431] Call Trace:=20 [ 1403.799434] [c00000000a44b840] [c00000000a44bc00] 0xc00000000a44bc00=20 [ 1403.799443] [c00000000a44b890] [c0000000004986f8] filemap_release_folio+0x88/0xb0=20 [ 1403.799452] [c00000000a44b8b0] [c0000000004c51b0] shrink_active_list+0x490/0x750=20 [ 1403.799462] [c00000000a44b9b0] [c0000000004c9f78] shrink_lruvec+0x3f8/0x= 430=20 [ 1403.799470] [c00000000a44baa0] [c0000000004ca1e4] shrink_node_memcgs+0x234/0x290=20 [ 1403.799478] [c00000000a44bb10] [c0000000004ca3b4] shrink_node+0x174/0x6b= 0=20 [ 1403.799486] [c00000000a44bbc0] [c0000000004cace0] balance_pgdat+0x3f0/0x= 970=20 [ 1403.799494] [c00000000a44bd20] [c0000000004cb430] kswapd+0x1d0/0x450=20 [ 1403.799501] [c00000000a44bdc0] [c0000000001943c8] kthread+0x148/0x150=20 [ 1403.799510] [c00000000a44be10] [c00000000000cbe4] ret_from_kernel_thread+0x5c/0x64=20 [ 1403.799520] Instruction dump:=20 [ 1403.799525] fbc1fff0 f821ffc1 7c7d1b78 7c9c2378 ebc30028 7fdff378 480000= 18 60000000=20=20 [ 1403.799540] 60000000 ebff0008 7c3ef840 41820048 <815f0060> e93f0000 5529= 077c 7d295378=20=20 [ 1403.799554] ---[ end trace 0000000000000000 ]---=20 [ 1403.806330]=20=20 [-- MARK -- Mon Sep 26 16:15:00 2022]=20 [ 1415.093395] EXT4-fs (sda3): shut down requested (2)=20 [ 1415.093410] Aborting journal on device sda3-8.=20 [ 1429.107188] EXT4-fs (sda3): unmounting filesystem.=20 [ 1429.926262] EXT4-fs (sda3): recovery complete=20 [ 1429.983938] EXT4-fs (sda3): mounted filesystem with ordered data mode. Q= uota mode: none.=20 [ 1429.988189] EXT4-fs (sda3): unmounting filesystem.=20 [ 1430.166549] EXT4-fs (sda3): mounted filesystem with ordered data mode. Q= uota mode: none.=20 [ 1453.015796] restraintd[2251]: *** Current Time: Mon Sep 26 12:15:45 2022= =20 Localwatchdog at: Wed Sep 28 11:54:44 2022=20 [ 1454.708150] EXT4-fs (sda5): unmounting filesystem.=20 [ 1455.225112] EXT4-fs (sda3): unmounting filesystem.=20 [ 1456.128026] EXT4-fs (sda3): mounted filesystem with ordered data mode. Q= uota mode: none.=20 [ 1456.139102] EXT4-fs (sda3): unmounting filesystem.=20 [ 1456.396367] EXT4-fs (sda5): mounted filesystem with ordered data mode. Q= uota mode: none.=20 [ 1462.317449] EXT4-fs (sda3): mounted filesystem with ordered data mode. Q= uota mode: none.=20 [ 1462.326680] EXT4-fs (sda3): unmounting filesystem.=20 [ 1462.427320] EXT4-fs (sda5): unmounting filesystem.=20 [ 1463.259690] EXT4-fs (sda5): mounted filesystem with ordered data mode. Q= uota mode: none.=20 >=20 > Ritesh, is this something you can take a look at it? Thanks! >=20 > - Ted --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=