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 AF16DC433F5 for ; Tue, 30 Nov 2021 16:21:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238316AbhK3QZQ (ORCPT ); Tue, 30 Nov 2021 11:25:16 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54616 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237898AbhK3QZP (ORCPT ); Tue, 30 Nov 2021 11:25:15 -0500 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E2D37C061574; Tue, 30 Nov 2021 08:21:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Sender:In-Reply-To: Content-Transfer-Encoding:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description; bh=yT5Ve3laIDiiQ14A0WrYsr3gkg1tox13wDMRqv3TQdA=; b=N5k07lqWyHdIxvr5mi8SH7zcuw bvu3gbDUoW8LyA+qSIx8TjQFn0l/0kGiwqZkXWBNPeRFMjrJyJgPILYnW5GR5mRdTDCiN+q1oIeEq 2/9uPRgP9pD4S5K4ceQjbIJ0VEtetrHkgJ2OiiIXVDDwEEnAIbKXn8uiyditp7Plz3ho4Hr2CxSlj tgDlIEGGbTf/7v3JIVWNVKSi8OGb01sQygskLmw8XeoDNXb96qFd1xojEcMqv6L7skN5qMWIJpr1H 7FaGrsofkHGqmpPh90W8LiWdFFl9UL0tUUUU0shFn3f1g8zq592+r6Sgi6RwdqUsqCaNAzB/uov8w okSg5zuA==; Received: from mcgrof by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1ms5tA-00699L-Uq; Tue, 30 Nov 2021 16:21:52 +0000 Date: Tue, 30 Nov 2021 08:21:52 -0800 From: Luis Chamberlain To: Stephen Rothwell Cc: Andrew Morton , Xiaoming Ni , Linux Kernel Mailing List , Linux Next Mailing List Subject: Re: linux-next: boot failure after merge of the akpm tree Message-ID: References: <20211130184622.71be17e0@canb.auug.org.au> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: <20211130184622.71be17e0@canb.auug.org.au> Sender: Luis Chamberlain Precedence: bulk List-ID: X-Mailing-List: linux-next@vger.kernel.org On Tue, Nov 30, 2021 at 06:46:22PM +1100, Stephen Rothwell wrote: > Hi all, >=20 > After merging the akpm tree, today's linux-next boot test (powerpc > pseries_le_defconfig) failed like this: >=20 > [ 0.025828][ T0] pid_max: default: 32768 minimum: 301 > [ 0.028445][ T0] Mount-cache hash table entries: 8192 (order: 0, 65= 536 bytes, linear) > [ 0.028636][ T0] Mountpoint-cache hash table entries: 8192 (order: = 0, 65536 bytes, linear) > [ 0.055344][ T0] BUG: Unable to handle kernel data access on write = at 0x2000000b7 > [ 0.056649][ T0] Faulting instruction address: 0xc00000000057435c > [ 0.057458][ T0] Oops: Kernel access of bad area, sig: 11 [#1] > [ 0.057734][ T0] LE PAGE_SIZE=3D64K MMU=3DHash SMP NR_CPUS=3D2048 N= UMA pSeries > [ 0.058250][ T0] Modules linked in: > [ 0.058816][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.16.0-r= c3 #2 > [ 0.059410][ T0] NIP: c00000000057435c LR: c000000000577f54 CTR: 0= 000000000000003 > [ 0.059608][ T0] REGS: c000000002787a80 TRAP: 0380 Not tainted (= 5.16.0-rc3) > [ 0.059999][ T0] MSR: 8000000002009033 = CR: 44000288 XER: 20000000 > [ 0.060654][ T0] CFAR: c000000000574464 IRQMASK: 0=20 > [ 0.060654][ T0] GPR00: c000000000577f54 c000000002787d20 c00000000= 2788500 c00000000252d5e8=20 > [ 0.060654][ T0] GPR04: c000000000e42500 c00000000252d5e8 000000000= 0000000 c0000000073a02c9=20 > [ 0.060654][ T0] GPR08: c000000000e42380 c000000000f89d48 c00000000= 274f700 ffffffffffffffff=20 > [ 0.060654][ T0] GPR12: 0000000000000000 c000000002970000 000000000= 0000000 0000000000000000=20 > [ 0.060654][ T0] GPR16: 0000000002bf00d0 000000000135bfd8 000000000= 0000000 0000000000000000=20 > [ 0.060654][ T0] GPR20: c00000000252d6e8 c00000000252d740 000000000= 0000006 0000000000000000=20 > [ 0.060654][ T0] GPR24: 0000000000000000 0000000000000002 c00000000= 2662eb8 c00000000252d5e8=20 > [ 0.060654][ T0] GPR28: 00000002000000b7 c000000001004108 000000000= 0000000 c00000000252d5c0=20 > [ 0.062938][ T0] NIP [c00000000057435c] count_subheaders.part.0+0x9= c/0x2b0 > [ 0.064395][ T0] LR [c000000000577f54] __register_sysctl_paths+0x64= /0x320 > [ 0.065201][ T0] Call Trace: > [ 0.065521][ T0] [c000000002787dc0] [c000000000577f54] __register_s= ysctl_paths+0x64/0x320 > [ 0.065960][ T0] [c000000002787e40] [c0000000005782a4] __register_s= ysctl_base+0x34/0x50 > [ 0.066570][ T0] [c000000002787e60] [c0000000020259bc] sysctl_init_= bases+0x34/0x74 > [ 0.066960][ T0] [c000000002787e90] [c000000002041744] proc_sys_ini= t+0x54/0x68 > [ 0.067306][ T0] [c000000002787eb0] [c0000000020410dc] proc_root_in= it+0xb8/0xdc > [ 0.067763][ T0] [c000000002787ed0] [c0000000020044fc] start_kernel= +0x838/0x8cc > [ 0.068171][ T0] [c000000002787f90] [c00000000000d39c] start_here_c= ommon+0x1c/0x600 > [ 0.068782][ T0] Instruction dump: > [ 0.069295][ T0] f821ff61 eab40018 2c350000 418201c8 e9350000 2c290= 000 4182020c 3b000000=20 > [ 0.069694][ T0] 3a600000 eb950018 2c3c0000 41820198 2c2= 90000 418201dc 3b200000=20 > [ 0.071747][ T0] ---[ end trace df5d37c8b563422a ]--- > [ 0.071967][ T0]=20 > [ 1.073058][ T0] Kernel panic - not syncing: Attempted to kill the = idle task! >=20 > Bisected to commit >=20 > f00ff38c1dfa ("sysctl: add and use base directory declarer and registra= tion helper") >=20 > I have reverted that complete 6 patch series for today. I'll be trying to reproduce and fix, thanks for the report! Luis