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 3DCB8C433FE for ; Tue, 21 Dec 2021 12:16:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237517AbhLUMQQ (ORCPT ); Tue, 21 Dec 2021 07:16:16 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42990 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234571AbhLUMQO (ORCPT ); Tue, 21 Dec 2021 07:16:14 -0500 Received: from gandalf.ozlabs.org (gandalf.ozlabs.org [IPv6:2404:9400:2:0:216:3eff:fee2:21ea]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3D85DC061574; Tue, 21 Dec 2021 04:16:14 -0800 (PST) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4JJFmX5MKzz4xmt; Tue, 21 Dec 2021 23:16:12 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canb.auug.org.au; s=201702; t=1640088973; bh=1z2SwME5Aku2UNRpHEs9HfjiN4612fvj2KO0CU/gLZ0=; h=Date:From:To:Cc:Subject:From; b=KiKkw5AkjqUz5Uwm+B85zBd92j8ZIglBHPR+inJwY5YFf0iIVjZpak7rl946TTxOd s839cWVU+gd9qBcKLd+kBIUHqvPLfoBmWSuy8N4L9to+m9lUkOHgSx9MfDlceh2mHH 7I7vzcUHLvQm7pzXKAC7jIV5oz0WiI/Dh9rMpJf9p+P+Yk769/zMmUOrf4pqSZQDoY gPdw4Q5q95eOV6EQcrcc6IK0kKS0Di3CvDFGqCgjFf271uExv+ka1ZCZkzGizw/dDh BFFe/7djYbkPufS/4CqwrqUlrrp5bJCAMO5NDMt1sChRuANnSZzd6owU9E39emrUqH VcXcshlM9ufBA== Date: Tue, 21 Dec 2021 23:16:11 +1100 From: Stephen Rothwell To: "Eric W. Biederman" Cc: Linux Kernel Mailing List , Linux Next Mailing List Subject: linux-next: run time warning after merge of the userns tree Message-ID: <20211221231611.785b74cf@canb.auug.org.au> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/4uD7FicQV8yBT7I4oCRdziU"; protocol="application/pgp-signature"; micalg=pgp-sha256 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --Sig_/4uD7FicQV8yBT7I4oCRdziU Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hi all, [I am just guessing at the userns tree.] My qemu boot test of a powerpc pseries_le_defconfig kernel produced this warning: SLUB: HWalign=3D128, Order=3D0-3, MinObjects=3D0, CPUs=3D1, Nodes=3D1 ftrace: allocating 33453 entries in 13 pages ftrace: allocated 13 pages with 3 groups trace event string verifier disabled ------------[ cut here ]------------ WARNING: CPU: 0 PID: 0 at kernel/sched/core.c:9469 sched_init+0x45c/0x4f4 Modules linked in: CPU: 0 PID: 0 Comm: swapper Not tainted 5.16.0-rc6 #2 NIP: c000000002027c98 LR: c000000002027c94 CTR: 0000000000000000 REGS: c00000000278bb80 TRAP: 0700 Not tainted (5.16.0-rc6) MSR: 8000000002021033 CR: 84000220 XER: 000000= 00 CFAR: c00000000016c1fc IRQMASK: 1=20 GPR00: c000000002027c94 c00000000278be20 c00000000278d300 000000000000000= 1=20 GPR04: c000000000f88788 c000000002865d98 c000000007070680 000000000000000= 1=20 GPR08: 000000007dae0000 c000000007070630 0000000000000000 000000000000000= 1=20 GPR12: 0000000000000000 c000000002970000 0000000000000000 000000000000000= 0=20 GPR16: 0000000002bf00d0 c0000000027c1f38 c00000000017e510 c000000002867f0= 0=20 GPR20: c0000000025306b8 c00000000017b520 c00000000017b200 c0000000028682b= 8=20 GPR24: 0000000000000400 0000000000000000 c0000000027c2470 c0000000027b3a0= 0=20 GPR28: c0000000021af900 0000000000000800 0000000000000000 c00000007fc8f90= 0=20 NIP [c000000002027c98] sched_init+0x45c/0x4f4 LR [c000000002027c94] sched_init+0x458/0x4f4 Call Trace: [c00000000278be20] [c000000002027c94] sched_init+0x458/0x4f4 (unreliable) [c00000000278bed0] [c000000002004200] start_kernel+0x53c/0x8cc [c00000000278bf90] [c00000000000d39c] start_here_common+0x1c/0x600 Instruction dump: 90ea0188 f92a0180 3d22fffb 39291890 39490050 7d005028 31080001 7d00512d=20 40c2fff4 e86d0908 4a144499 60000000 <0b030000> a08d0008 e86d0908 4bfff849= =20 ---[ end trace 0000000000000000 ]--- Exposed by commit 40966e316f86 ("kthread: Ensure struct kthread is present for all kthreads= ") --=20 Cheers, Stephen Rothwell --Sig_/4uD7FicQV8yBT7I4oCRdziU Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEENIC96giZ81tWdLgKAVBC80lX0GwFAmHBxYsACgkQAVBC80lX 0GzZjgf+I10ffk6B+zKRHQ3My2mJIzY8paFnofu1ZtjHulspRya3djQ3fJaWc6/m 8hhmBXx3EC1LjZ/UGE/aVJZrVJV4OUl5KA4Igvca5Qe7CjpG/l0jqTIvL2IUiSCG gejkDZCpBA0vk31SndzAD3WVtjinZiBvcd+4F6CK/aBVNykwWla7xZba1Wkndp0p r+XboFq/Mi8THNpwkNdV4EokaHefhuBuHHNQk+t76pGQILJ/46YgPrn80egaRqOQ 2TcTIpvkSG92xVhGC6ouX9VACFvYKPrtNkXvp6kF68LIiNtJAntIsTG7artukofJ z8wikqxR6dKcfq6bmrBpZmUMzPJyyQ== =Siq0 -----END PGP SIGNATURE----- --Sig_/4uD7FicQV8yBT7I4oCRdziU--