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=-0.8 required=3.0 tests=FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 646A2C43441 for ; Tue, 13 Nov 2018 18:58:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0F43E223DD for ; Tue, 13 Nov 2018 18:58:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0F43E223DD Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=gmx.us Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727166AbeKNE6H (ORCPT ); Tue, 13 Nov 2018 23:58:07 -0500 Received: from mout.gmx.net ([212.227.17.21]:50261 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726659AbeKNE6H (ORCPT ); Tue, 13 Nov 2018 23:58:07 -0500 Received: from dhcp-41-57.bos.redhat.com ([66.187.233.206]) by mail.gmx.com (mrgmx102 [212.227.17.174]) with ESMTPSA (Nemesis) id 0MW9TR-1fyFOQ3Ioj-00XIha; Tue, 13 Nov 2018 19:58:24 +0100 Message-ID: <1542135498.12945.20.camel@gmx.us> Subject: Re: WARNING: CPU: 26 PID: 64391 at lib/vsprintf.c:2193 set_precision+0x84/0x90 From: Qian Cai To: Andy Shevchenko Cc: linux-kernel@vger.kernel.org, Petr Mladek , "Tobin C. Harding" , "Steven Rostedt (VMware)" , Geert Uytterhoeven , Rasmus Villemoes Date: Tue, 13 Nov 2018 13:58:18 -0500 In-Reply-To: <20181113172920.GI10650@smile.fi.intel.com> References: <1542128132.12945.19.camel@gmx.us> <20181113172920.GI10650@smile.fi.intel.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.22.6 (3.22.6-10.el7) Mime-Version: 1.0 Content-Transfer-Encoding: 8bit X-Provags-ID: V03:K1:mywaXFOPIHwE6hx3FkrW3BAMGpwzeOHyYxsMeY5VoAvx6FwiCQv X4rWtMVfsaAsdc1tCT392P9JTpWp4FX2yS9UuGa1biMiyrL9/3cS0zreJf9PSsO0q5Ee4Rl dcKcCucsb5xaA7jlSn/pkXIQgRGX8/+qjz6D6CtzAIgzNhSAJBmaEDVDE4pVHEyaQihVTwv fM37ndKsK0000bUz7DfMw== X-UI-Out-Filterresults: notjunk:1;V01:K0:6efSR0Jb0Lk=:KyGlL5z7CQqOsTJaZku0TS dJVm/DWRXGju/xU9CdxUOgOee+w73uQyApePQos90d9k/WmT17xYmJ7Fopv4z33JHQb/SzD+m t3+xCO6ctt03PoZ97Om5p7Wl3ZPAHO1bNS4mbXhZmHG771DgsJ2y1v2GrNjAdIpaLy3ByzYGn uDG1UtBdz6wIS6mR/mA4L9qIkV7eZle6qkZMIyJgbjMl5Yqs4ArcGjksW7U5LPmnSFH0T/xaM E1uCg05e2ziIRaUdXl1VqTa9zkb3CBWTs4oqlvLj0ZYfe5HZakMBC3qGPgHFC1M4uEo2ZgvQH 4lxry3nXQZ6i1FpwHB/x9yWVSB26b6OClYRw6EF210VyMbHtsPkL5HmHpAETAAN5Ko2nEwFQF N5hOFwqP5BeVuou8xFN1Xvip80kede/5FcHRf5BXTdKmuif2U0Rn/0RycKlb9j6wMDTDNxbBp +E2dZTmPuhPEV8J1Bonle/rWn/L6d4jloYOVgWDfQL/QdUW4hHoOrNMMLBxIWgzmpOCmvyT07 qF7P7EbA+3DGqcaYpjd0xP3h7JcFBPuH24Ab94Df9JE8gDs30mcJdoG+4hlRmgla33GjY73MY El/+7wpRR8kMggwYgHVxuIf2BvSU6oQs1kxmVt/TcxCFf/egDhua6ZCHmY1cvHfwgpGoKPTrx /6WD6Q8lrTzDhigGfDsvZ40J8Su8l6IXk99kbh4m3XLv4toaKueh9oDxAe5wK2Qno2n9an3RL 3VldripTIoPM1qWclfF+AvNtjDVP2GiIaSHSL/37TueovtWnSpl9MyO1osi7dnZaAxgzbq/Wp EW3WjikTCtsTLV3G7AxAmWAw3GExdVN3iiMZl6PVtblxa9CfXsQOSQYjhabnuO4XutkcJkVCz f2/txTf54L42Lu+SmF+8wsXmj048GPFKYzYe4NWOAAv1zeSOkebInm9yXd3o+d Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2018-11-13 at 19:29 +0200, Andy Shevchenko wrote: > On Tue, Nov 13, 2018 at 11:55:32AM -0500, Qian Cai wrote: > > +Cc Rasmus > > > Running the trinity fuzzer with a non-root user on an aarch64 server with > > the > > latest mainline (rc2) generated this. Is it just a false alarm to ignore? > > > > [  807.847370] precision 65525 too large > > It seems like someone uses -EAGAIN as a parameter to printf(). > > Or rather this line > >   if (!fs && (request_module("fs-%.*s", len, name) == 0)) { >   ... >   } > > Care to print the len and name parameters before this line? len = 60612; name = %d%d%d%d%d%d%s%s%s%d%s%d%d%d%s%s%s%s%s%d%s%d%s%s%s%d%s%d%d%s%s%d%s%s%d%d%s%s%s%s %s%d%s%d%d%s%s%s%d%d%d%d%d%s%s%s%s%d%s%s%s%s%d%d%d%d%d%d%d%s%s%s%s%d%s%d%s%d%s%d %s%s%d%s%d%s%s%s%s%d%s%d%s%s%d%d%s%s%d%s%d%s%s%d%s%d%d%s%s%s%s%d%s%s%s%s%d%d%s%s %s%d%s%d%s%s%d%d%d%d%d%s%s%s%s%s%s%s%d%d%d%s%d%s%d%d%s%d%d%d%s%s%d%d%d%s%s%d%s%d %s%s%s%d%d%d%s%d%s%s%d%s%d%s%s%d%s%d%d%s%d%s%s%d%s%s%s%s%s%d%s%d%d%d%s%d%d%d%d%s %d%s%d%d%d%s%s%s%s%s%d%s%s%s%s%d%d%d%s%d%s%d%d%s%d%s%s%d%d%d%s%d%s%d%d%s%s%s%d%s %s%d%d%d%d%d%d%d%d%d%d%s%d%s%d%s%d%d%s%d%d%s%d%s%s%s%d%d%d%d%s%s%d%d%s%d%d%d%s%d %d%s%d%d%d%d%s%s%d%s%s%d%d%d%s%s%s%s%s%s%s%s%s%d%s%d%d%s%d%s%s%d%s%s%s%s%d%d%d%d %s%d%s%s%d%d%d%s%d%d%d%s%s%s%s%d%d%d%s%d%s%d%s%d%d%d%d%d%d%d%d%d%d%s%s%d%d%d%s%d %d%d%s%s%s%s%s%s%s%d%d%d%d%s%s%d%s%s%d%s%s%s%s%d%d%s%d%d%s%d%d%s%d%d%d%s%s%s%s%d %s%s%d%s%d%s%d%s%d%d%d%d%s%d%d%d%s%d%d%d%d%s%s%d%s%s%d%d%d%s%d%s%d%d%d%d%d%d%s%d %s%s%d%d%s%d%d%d%s%s%d%s%d%s%d%s%d%d%s%d%s%s%s%s%s%d%s%s%d%d%d%s%s%d%d%s%s%d%s%d %s%d%s%s%s% [  833.044728] ------------[ cut here ]------------ [  833.137184] precision 60612 too large > > > > [  807.847449] WARNING: CPU: 26 PID: 64391 at lib/vsprintf.c:2193 > > set_precision+0x84/0x90 > > [  807.860161] Modules linked in: cast6_generic cast_common lrw bridge 8021q > > garp mrp stp llc dlci tcp_diag inet_diag af_key pptp gre l2tp_ppp > > l2tp_netlink > > l2tp_core ip6_udp_tunnel udp_tunnel pppoe pppox ppp_generic slhc crypto_user > > ib_core nfnetlink scsi_transport_iscsi atm sctp vfat fat ghash_ce sha2_ce > > sha256_arm64 sha1_ce ses enclosure ipmi_ssif sg ipmi_si ipmi_devintf > > sbsa_gwdt > > ipmi_msghandler sch_fq_codel xfs libcrc32c marvell mpt3sas mlx5_core > > raid_class > > hibmc_drm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm > > drm > > ixgbe hisi_sas_v2_hw igb hisi_sas_main libsas hns_dsaf mlxfw devlink > > hns_enet_drv mdio i2c_designware_platform i2c_algo_bit i2c_designware_core > > ehci_platform scsi_transport_sas hns_mdio hnae dm_mirror dm_region_hash > > dm_log > > dm_mod > > [  807.927838] CPU: 26 PID: 64391 Comm: trinity-c90 Kdump: loaded Tainted: > > G        W         4.20.0-rc2+ #16 > > [  807.937494] Hardware name: Huawei TaiShan 2280 /BC11SPCD, BIOS 1.50 > > 06/01/2018 > > [  807.944718] pstate: 60000005 (nZCv daif -PAN -UAO) > > [  807.949515] pc : set_precision+0x84/0x90 > > [  807.953439] lr : set_precision+0x84/0x90 > > [  807.957362] sp : ffff801e6430f6b0 > > [  807.960677] x29: ffff801e6430f6b0 x28: ffff801e6430fb10  > > [  807.965992] x27: 0000000000000003 x26: 00000000ffffffd8  > > [  807.971307] x25: ffff801e6430fba0 x24: ffff801e6430fb48  > > [  807.976622] x23: ffff2000093ddfa0 x22: ffff801e6430f770  > > [  807.981937] x21: ffff2000090eb4a6 x20: ffff801e6430f770  > > [  807.987252] x19: 000000000000fff5 x18: 0000000000000000  > > [  807.992569] x17: 0000000000000000 x16: 0000000000000000  > > [  807.997884] x15: 0000000000000000 x14: 3878302031343220  > > [  808.003201] x13: 6265783020303939 x12: ffff04000172b49c  > > [  808.008516] x11: 1fffe4000172b49b x10: ffff04000172b49b  > > [  808.013832] x9 : 0000000000000000 x8 : 203532353536206e  > > [  808.019148] x7 : 6f69736963657270 x6 : 0000000041b58ab3  > > [  808.024463] x5 : dfff200000000000 x4 : dfff200000000000  > > [  808.029779] x3 : dfff200000000000 x2 : 65a2459128144800  > > [  808.035093] x1 : 65a2459128144800 x0 : 0000000000000000  > > [  808.040408] Call trace: > > [  808.042861]  set_precision+0x84/0x90 > > [  808.046440]  vsnprintf+0x23c/0x858 > > [  808.049845]  __request_module+0x1a0/0x8b8 > > [  808.053860]  get_fs_type+0xb0/0x138 > > [  808.057351]  do_mount+0x2c4/0x13c0 > > [  808.060756]  ksys_mount+0xf4/0x110 > > [  808.064160]  __arm64_sys_mount+0x70/0x88 > > [  808.068087]  el0_svc_handler+0xd4/0x198 > > [  808.071928]  el0_svc+0x8/0xc > > [  808.074810] irq event stamp: 347872 > > [  808.078305] hardirqs last  enabled at (347871): [] > > vprintk_emit+0x2b0/0x5c0 > > [  808.086833] hardirqs last disabled at (347872): [] > > do_debug_exception+0xd8/0x190 > > [  808.095795] softirqs last  enabled at (347844): [] > > __do_softirq+0x7c8/0x9c8 > > [  808.104325] softirqs last disabled at (347837): [] > > irq_exit+0x25c/0x2f0 > > [  808.112502] ---[ end trace 598902d30712b79e ]--- > >