From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Jones Subject: ip_vs_ftp causing ip_vs oops on module load. Date: Wed, 18 May 2011 16:19:15 -0400 Message-ID: <20110518201915.GB20475@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Wensong Zhang To: netdev@vger.kernel.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:30361 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751832Ab1ERUT3 (ORCPT ); Wed, 18 May 2011 16:19:29 -0400 Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-ID: I get this oops from ip_vs_ftp.. general protection fault: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC last sysfs file: /sys/module/nf_nat/refcnt CPU 3 Modules linked in: ip_vs(+) libcrc32c nf_nat nfsd lockd nfs_acl auth_rpcgss sunrpc cpufreq_ondemand powernow_k8 freq_table mperf ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables snd_hda_codec_realtek ppdev snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm microcode edac_core snd_timer k10temp snd pcspkr usb_debug edac_mce_amd soundcore snd_page_alloc sp5100_tco i2c_piix4 parport_pc parport wmi r8169 mii lm63 ipv6 pata_acpi firewire_ohci ata_generic firewire_core crc_itu_t pata_atiixp floppy radeon ttm drm_kms_helper drm i2c_algo_bit i2c_core [last unloaded: nf_nat] Pid: 1366, comm: modprobe Not tainted 2.6.39-rc7+ #15 Gigabyte Technology Co., Ltd. GA-MA78GM-S2H/GA-MA78GM-S2H RIP: 0010:[] [] notifier_chain_register+0xb/0x2a RSP: 0018:ffff880114139e68 EFLAGS: 00010206 RAX: 2f736e74656e2f74 RBX: ffffffffa04265d0 RCX: 0000000000000003 RDX: 00000000656e6567 RSI: ffffffffa04265d0 RDI: ffffffffa04235d8 RBP: ffff880114139e68 R08: ffff880114139df8 R09: 0000000000000001 R10: 0000000000000001 R11: 00000000000001cc R12: ffffffffa0432106 R13: 0000000000000000 R14: 0000000000007f0d R15: 0000000000410e40 FS: 00007f2aaf242720(0000) GS:ffff88012a800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00007f2aaea0100f CR3: 000000011424f000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process modprobe (pid: 1366, threadinfo ffff880114138000, task ffff8801146cc7a0) Stack: ffff880114139e78 ffffffff8107be36 ffff880114139ec8 ffffffff81403058 0000000000000000 0000000000000000 ffff880114139ea8 0000000000000000 ffffffffa0432106 0000000000000000 0000000000007f0d 0000000000410e40 Call Trace: [] raw_notifier_chain_register+0xe/0x10 [] register_netdevice_notifier+0x2d/0x1b6 [] ? ip_vs_conn_init+0x106/0x106 [ip_vs] [] ip_vs_control_init+0xa5/0xce [ip_vs] [] ? ip_vs_conn_init+0x106/0x106 [ip_vs] [] ip_vs_init+0x10/0x11c [ip_vs] [] do_one_initcall+0x7f/0x13a [] sys_init_module+0x132/0x281 [] system_call_fastpath+0x16/0x1b Code: 07 ff c8 89 43 48 eb 08 48 89 df e8 dc 95 44 00 4c 89 e6 48 89 df e8 a7 a5 44 00 5b 41 5c 5d c3 55 48 89 e5 66 66 66 66 90 eb 0c <8b> 50 10 39 56 10 7f 0c 48 8d 78 08 48 8b 07 48 85 c0 75 ec 48 RIP [] notifier_chain_register+0xb/0x2a RSP ---[ end trace e90d7053ad1a7a5b ]--- This script replicates the bug. (it usually oopses after just a few loops) #!/bin/sh while [ 1 ]; do modprobe ip_vs_ftp modprobe -r ip_vs_ftp done Looks like something isn't getting cleaned up on module exit that we fall over when we encounter it next time it gets loaded ? Dave