From mboxrd@z Thu Jan 1 00:00:00 1970 From: Josh Boyer Subject: softirq oops from b44_poll Date: Mon, 7 Nov 2011 15:56:47 -0500 Message-ID: <20111107205647.GC14216@zod.bos.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-kernel@vger.kernel.org, kernel-team@fedoraproject.org To: Gary Zambrano , netdev@vger.kernel.org Return-path: Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Hi all, We've had two reports of a WARN_ON being spit out from kernel/softirq.c that seem fairly related in symptoms. Both seem to involved b44_poll either during the middle of some disk I/O. An example of the output is here: :WARNING: at kernel/softirq.c:159 _local_bh_enable_ip+0x44/0x8e() :Hardware name: Vostro 1500 :Modules linked in: fuse lockd ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack sunrpc uinput snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm dell_wmi sparse_keymap dell_laptop joydev dcdbas microcode r852 sm_common nand nand_ids b44 nand_ecc r592 mtd ssb mii memstick arc4 i2c_i801 iTCO_wdt iTCO_vendor_support iwl3945 iwl_legacy mac80211 cfg80211 rfkill snd_timer snd soundcore snd_page_alloc firewire_ohci firewire_core crc_itu_t uas usb_storage sdhci_pci sdhci mmc_core nouveau ttm drm_kms_helper drm i2c_algo_bit i2c_core mxm_wmi wmi video [last unloaded: scsi_wait_scan] :Pid: 1511, comm: nepomukservices Not tainted 3.1.0-1.fc16.x86_64 #1 :Call Trace: : [] warn_slowpath_common+0x83/0x9b : [] warn_slowpath_null+0x1a/0x1c : [] _local_bh_enable_ip+0x44/0x8e : [] local_bh_enable_ip+0xe/0x10 : [] _raw_spin_unlock_bh+0x15/0x17 : [] destroy_conntrack+0x9d/0xdc [nf_conntrack] : [] nf_conntrack_destroy+0x19/0x1b : [] skb_release_head_state+0xa7/0xef : [] __kfree_skb+0x13/0x83 : [] consume_skb+0x56/0x6b : [] b44_poll+0xaf/0x3ec [b44] : [] net_rx_action+0xa9/0x1b8 : [] ? br32+0x19/0x1d [b44] : [] __do_softirq+0xc9/0x1b5 : [] ? ack_APIC_irq+0x15/0x17 : [] call_softirq+0x1c/0x30 : [] do_softirq+0x46/0x81 : [] irq_exit+0x57/0xb1 : [] do_IRQ+0x8e/0xa5 : [] common_interrupt+0x6e/0x6e : [] ? sysret_audit+0x16/0x20 You can find the original bug reports in the URLs below. This has happened on two different machines, one 32-bit and another 64-bit. I'm fairly sure both reports are the same issue, but I haven't a clue what that issue might be at the moment. Thoughts? https://bugzilla.redhat.com/show_bug.cgi?id=749856 https://bugzilla.redhat.com/show_bug.cgi?id=741117 josh