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Date: Tue, 13 Feb 2007 19:37:23 -0500 From: Chuck Ebbert <cebbert@...hat.com> To: linux-kernel <linux-kernel@...r.kernel.org> Subject: Help! How do I debug oopsing kernel workqueue threads? How the hell do I tell what kernel subsystem queued a bogus work item? BUG: unable to handle kernel paging request at virtual address 00002074 printing eip: c04f3b55 *pde = 71bb1067 Oops: 0000 [#1] SMP last sysfs file: /class/scsi_host/host2/proc_name Modules linked in: hwmon i2c_isa eeprom sunrpc ipv6 ip_nat_sip ip_nat_pptp ip_nat_ftp ip_conntrack_sip ip_conntrack_pptp ip_conntrack_ftp xt_helper ipt_LOG xt_state xt_tcpudp iptable_mangle iptable_nat ip_nat ip_conntrack nfnetlink iptable_filter ip_tables x_tables dm_mirror dm_multipath dm_mod video sbs i2c_ec button battery asus_acpi ac lp snd_hda_intel snd_hda_codec snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss sg snd_pcm snd_timer ide_cd floppy snd serio_raw cdrom sky2 ohci1394 ieee1394 soundcore pcspkr iTCO_wdt skge i2c_i801 snd_page_alloc i2c_core parport_pc parport ata_piix libata aacraid sd_mod scsi_mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd CPU: 0 EIP: 0060:[<c04f3b55>] Not tainted VLI EFLAGS: 00010046 (2.6.19-1.2895.fc6 #1) EIP is at list_del+0x2d/0x6c eax: 00002070 ebx: f76f0f80 ecx: 00000001 edx: 00000000 esi: f7ff8dc0 edi: d6ca8000 ebp: f7e6f380 esp: f7fefef0 ds: 007b es: 007b ss: 0068 Process events/0 (pid: 8, ti=f7fef000 task=f7e205d0 task.ti=f7fef000) Stack: f7e205d0 d7ade040 f7ff8d40 f76f0f80 c04717fc f703e0c0 c07a2fc8 f703e0c0 00000001 00000000 f7ff8e60 f7ff8e60 00000001 f7ff8e40 00000000 c04718ff 00000000 00000000 f7e6f380 f7ff8de4 f7ff8dc0 f7e6f380 f7e0bac0 00000282 Call Trace: [<c04717fc>] free_block+0x77/0xf0 [<c04718ff>] drain_array+0x8a/0xb5 [<c0472e9c>] cache_reap+0x53/0x117 [<c04368c7>] run_workqueue+0x97/0xdd [<c0437284>] worker_thread+0xd9/0x10d [<c0439810>] kthread+0xc0/0xec [<c0404c03>] kernel_thread_helper+0x7/0x10 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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