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 4ADA2C43334 for ; Sat, 9 Jul 2022 05:34:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229491AbiGIFed (ORCPT ); Sat, 9 Jul 2022 01:34:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37568 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229448AbiGIFec (ORCPT ); Sat, 9 Jul 2022 01:34:32 -0400 Received: from mout.gmx.net (mout.gmx.net [212.227.15.19]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E76F089A81; Fri, 8 Jul 2022 22:34:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1657344868; bh=WQJYEsiTE2uKcSIa88wX9tDWIRA1dKUlveQY5EoYUgs=; h=X-UI-Sender-Class:Date:To:From:Subject; b=i0f0K89NqWgoVBjzdY0fafkvfiTGvnzO1NBRlwsgIxjkcgUoEEXWrZ4weTRrkxNcn NW7u3m50Mf3ZT2ET0FYDpzjY1iE7JOZ7z2SlWyvzh7nwaOxTzMWelpCqDXirKhFDiJ xqLxElJ2pwXTsJQv+cg9MNx25qGi07jE84yhZ51I= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [192.168.20.60] ([92.116.134.222]) by mail.gmx.net (mrgmx005 [212.227.17.190]) with ESMTPSA (Nemesis) id 1MQ5vW-1nwtwh3iJU-00M0As; Sat, 09 Jul 2022 07:34:27 +0200 Message-ID: Date: Sat, 9 Jul 2022 07:33:51 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Content-Language: en-US To: Alexander Viro , linux-fsdevel , linux-kernel@vger.kernel.org, linux-parisc From: Helge Deller Subject: WARNING: CPU: 1 PID: 14735 at fs/dcache.c:365 dentry_free+0x100/0x128 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:Bo1iDPqNzEIlDBTe7ZziPASjiqeLpZ4fTonwjaN0gNa3vU69Bie HQ3cYQhieH9i02VADN4ZB1FXOUF+Xmq+ncjsf6sSWYMBsI0cENrSB8ryMPcrM9DsXSwaTfR s5UC0OYqJu4hTMdgSiAbty9JITVNAiHatT/V7CLdhTZOmgf18fhWCh7bNDdRjlry8xDhqge 7ABeW/1l72cr7vqZ3/iHA== X-UI-Out-Filterresults: notjunk:1;V03:K0:evpVDAfgM/k=:FCitVBuC0+fSEB/pYdIaol C2VDu+NHLSjtOnHcYgYLb11qp9eIGp355AD+JkfE80nspWX3hgrgoSNyzr8NES9eoMolfDp4q y1wZL59hvKW1KKOep1JsY3FnTDpRJDCzDMhp+YkO89F4M/p/hiKoGt6OL+H5HSy/FeYH/xyA3 kCeqslt5v69IRM/N+dDlqgiRluA/wz+hLirJMycoUV4mqkMT6mTZn4Sxk1tPZBK4jZc85nlMp 3fEmT3ah0r3Qhv+1ioAggISxeaQzdjYquLPtGoPyvvZof/K3dC+K7EBCJPBut77KDeWHzvWcD YY2p2UWOLt4z7q6IsPsQyrweGeVOV6v7x9jziQ52g4JQcCdPvduyu6mmIx9wBFlXWUPvwFO2k R1khYS6FtGbi0hkvWEAL1kAJuQJVKmUyST/EsQ8ka9QVpuvBWDjs/++Kjqrso0EgSxuGLFvRg ccDhjazA19+pBNorlqXJA7WxIvD/rk5l39Ls2rtQYvsavXOhLJqRxuC3mIopFwcs4dOis/iDw SYsBQl6aSeUigqK1ISuYPX2WUzp2Uful6bLZcyIa/Z72G7ImclTzPP8zUPcJFai83TC7pDGtQ YtZHscCJA3/u1E2LOuU96VVz+ymoULjx4S7B81xa4QPBsgWcXFmkPw9fZv4YP0JOHBrFwGMHG mtu/AwOIGZWdOR5eFXClKeHgFGQmxS8x1Qmb1QcCWZLHPw8ZLo5PGJhI8GHkEbR05bxlY+NbP 905fUoI2df2wXaDVCjIbx5vOJpdLMFN4RmcO9sYy6qL6FNHmcIKjtBCWeVo5NvovVc42eACV4 ulolLpRSco9tDFWhPwSzdlYBfvv/u4zmf7sORx7TuF60KbeEBenH1ChZrPr0hUQblgdyxFSnz 7gA0DaVNyrDRboVqnQFBhqPBW0TijECn+/RW7gZ9fyswaktKkfRT5hei1zyX6+uZxZkyvUfJT y6HgNkeUTaG30Kx87NDAO9UrknbvNMVXYl6Zfq/cjxEnkFfEIiTBISspTZlcUTkLfyClgxYir SAue5kqn3FAMTMFpbluvOFFnGqckhdjThSAukwD6DCvfRDayWCGrd+Q6fJv2dAyEMx/hg060g TiFM6LijjqKX2LBMX1U2RPYG5cjQjcnNA85+7qEO0Wn0k+Ke6t6kMH48g== Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org On the debian buildd servers for the parisc architecture I'm facing the following warning, after which it gets stuck so that I need to reboot the server. This happens rarely, but I can reproduce it after some time. Filesystem is tmpfs. I'm happy to add debug code if necessary... Helge [128321.224739] ------------[ cut here ]------------ [128321.283492] WARNING: CPU: 1 PID: 14735 at fs/dcache.c:365 dentry_free+= 0x100/0x128 [128321.371369] Modules linked in: dm_mod(E) ipt_REJECT(E) nf_reject_ipv4(= E) xt_multiport(E) nft_compat(E) nf_tables(E) nfnetlink(E) ipmi_si(E) ipmi= _devintf(E) sg(E) ipmi_msghandler(E) fuse(E) configfs(E) sunrpc(E) ip_tabl= es(E) x_tables(E) autofs4(E) ext4(E) crc16(E) mbcache(E) jbd2(E) btrfs(E) = blake2b_generic(E) xor(E) raid6_pq(E) zstd_compress(E) libcrc32c(E) crc32c= _generic(E) sd_mod(E) t10_pi(E) crc64_rocksoft(E) crc64(E) crc_t10dif(E) c= rct10dif_generic(E) ohci_pci(E) crct10dif_common(E) ata_generic(E) sata_si= l(E) ehci_pci(E) pata_sil680(E) mptspi(E) mptscsih(E) ohci_hcd(E) mptbase(= E) scsi_transport_spi(E) ehci_hcd(E) libata(E) scsi_mod(E) usbcore(E) e100= 0(E) usb_common(E) scsi_common(E) [128322.103374] CPU: 1 PID: 14735 Comm: cc1plus Tainted: G E = 5.18.9+ #27 [128322.195315] Hardware name: 9000/785/C8000 [128322.247318] [128322.263314] YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI [128322.323316] PSW: 00001000000001101111000000001111 Tainted: G = E [128322.407315] r00-03 000000000806f00f 0000000239aa8700 000000004073be90= 0000000239aa87a0 [128322.507313] r04-07 00000000410e1a00 000000411c8e3b40 0000000211715ad8= 000000411c8e3b98 [128322.603314] r08-11 00000000410b8e80 0000000041147200 00000000000800e0= 0000000041147200 [128322.699311] r12-15 0000000000000001 0000000010000000 0000000041147200= 0000000041147200 [128322.795312] r16-19 000000411c8e3b98 0000000000000000 00000000415084d0= 0000000002c55000 [128322.895311] r20-23 000000000800000f 000000004fb33600 000000000800000f= 0000000211715b20 [128322.991311] r24-27 000000411c8e3bd0 000000411c8e3bd0 000000411c8e3b40= 00000000410e1a00 [128323.087309] r28-31 00000000416bf9d8 0000000239aa8770 0000000239aa8820= 000000000000cf14 [128323.187310] sr00-03 000000000500a800 0000000000000000 000000000000000= 0 000000000500a800 [128323.283324] sr04-07 0000000000000000 0000000000000000 000000000000000= 0 0000000000000000 [128323.383313] [128323.399309] IASQ: 0000000000000000 0000000000000000 IAOQ: 000000004073= b3d4 000000004073b3d8 [128323.503310] IIR: 03ffe01f ISR: 0000000010340400 IOR: 000003e6aa2a= 87a8 [128323.587306] CPU: 1 CR30: 0000000212ff0ce0 CR31: ffffffffffff= ffff [128323.667328] ORIG_R28: 0000000239aa8920 [128323.715307] IAOQ[0]: dentry_free+0x100/0x128 [128323.771306] IAOQ[1]: dentry_free+0x104/0x128 [128323.823305] RP(r2): __dentry_kill+0x284/0x2e8 [128323.875347] Backtrace: [128323.907319] [<000000004073be90>] __dentry_kill+0x284/0x2e8 [128323.975309] [<000000004073d6d8>] dput+0x334/0x5a8 [128324.031311] [<0000000040726d94>] step_into+0x790/0xa88 [128324.095309] [<0000000040728910>] path_openat+0x21c/0x1ba8 [128324.163310] [<000000004072c018>] do_filp_open+0x9c/0x198 [128324.231310] [<0000000040702320>] do_sys_openat2+0x14c/0x2a8 [128324.299309] [<0000000040702c54>] compat_sys_openat+0x58/0xb8 [128324.367308] [<0000000040303e30>] syscall_exit+0x0/0x10 after that: [128324.451303] ---[ end trace 0000000000000000 ]--- [128345.511159] rcu: INFO: rcu_sched self-detected stall on CPU [128345.511159] rcu: 0-...!: (5249 ticks this GP) idle=3D3c3/1/0x400000= 0000000002 softirq=3D35954078/35954078 fqs=3D54 [128345.511159] (t=3D5250 jiffies g=3D33838821 q=3D175418) [128345.511159] rcu: rcu_sched kthread starved for 5146 jiffies! g33838821= f0x0 RCU_GP_WAIT_FQS(5) ->state=3D0x0 ->cpu=3D1 [128345.511159] rcu: Unless rcu_sched kthread gets sufficient CPU time,= OOM is now expected behavior. [128345.511159] ... [128345.511159] [128345.511159] rcu: Stack dump where RCU GP kthread last ran: [128345.511159] Task dump for CPU 1: [128345.511159] task:cc1plus state:R running task stack: 0= pid:14735 ppid: 14734 flags:0x00000014 [128345.511159] Backtrace: [128345.511159] [<000000004071f5c8>] __legitimize_path+0x7c/0x108 [128345.511159] [<00000000407210d4>] lookup_fast+0x1c8/0x290 [128345.511159] [<00000000407277b4>] walk_component+0x1e8/0x330 [128345.511159] [<0000000040727be8>] link_path_walk.part.0.constprop.0+0x= 2ec/0x4d0 [128345.511159] [<0000000040728844>] path_openat+0x150/0x1ba8 [128345.511159] [<000000004072c018>] do_filp_open+0x9c/0x198 [128345.511159] [<0000000040702320>] do_sys_openat2+0x14c/0x2a8 [128345.511159] [<0000000040702c54>] compat_sys_openat+0x58/0xb8 [128345.511159] [<0000000040303e30>] syscall_exit+0x0/0x10 [128345.511159]