Re: What is a soft lockup?

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I'm still at a loss as to what this error actually means?

Is this a problem with my disk controller not liking this build of fedora?




On 4 Jul 2006, at 14:47, Mike wrote:

Hey Zac,

maybe this helps you out:
http://www.gossamer-threads.com/lists/linux/kernel/655450

Mike

Zac Tolley schreef:
I'm running a fc5 box, with a bunch of disks and opennms, which puts a high workload on the disks. Not running raid.

In /var/logl/messages i get and error like this repeatedl. The box is a dual xeon and it seems like each cpu in turn shows this error.

what does it mean?



Jul  2 04:00:21 opennms kernel: BUG: soft lockup detected on CPU#2!
Jul  2 04:00:21 opennms kernel: CPU 2:
Jul 2 04:00:21 opennms kernel: Modules linked in: loop ipv6 ppdev autofs4 hidp rfcomm l2cap bluetooth sunrpc ip_conntrack_netbios_ns ipt_REJECT xt_state ip_conntrack nfnetlink xt_tcpudp iptable_filter ip_tables x_tables video button battery ac lp parport_pc parport floppy nvram uhci_hcd ehci_hcd e1000 tg3 hw_random e752x_edac edac_mc dm_snapshot dm_zero dm_mirror dm_mod ext3 jbd cciss mptspi mptscsih sd_mod scsi_mod mptbase Jul 2 04:00:21 opennms kernel: Pid: 27, comm: kblockd/2 Not tainted 2.6.15-1.2054_FC5 #1 Jul 2 04:00:21 opennms kernel: RIP: 0010:[<ffffffff8033b86a>] <ffffffff8033b86a>{_spin_unlock_irqrestore+11} Jul 2 04:00:21 opennms kernel: RSP: 0018:ffff81015b435e08 EFLAGS: 00000247 Jul 2 04:00:21 opennms kernel: RAX: 0000000000000002 RBX: 0000000000000247 RCX: ffff81015a4d2850 Jul 2 04:00:21 opennms kernel: RDX: 0000000000000002 RSI: 0000000000000247 RDI: ffff81015a40b3d8 Jul 2 04:00:21 opennms kernel: RBP: ffff81015a4d2938 R08: ffff81015a4d28a0 R09: ffff81015a4d2800 Jul 2 04:00:21 opennms kernel: R10: 00000000dffe0000 R11: ffff81015a40b000 R12: ffff81015b4118c0 Jul 2 04:00:21 opennms kernel: R13: 0000000000000247 R14: ffff81015b028ce8 R15: ffffffff801fd5c7 Jul 2 04:00:21 opennms kernel: FS: 0000000000000000(0000) GS:ffff81015bf256c0(0000) knlGS:0000000000000000 Jul 2 04:00:21 opennms kernel: CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b Jul 2 04:00:21 opennms kernel: CR2: 00002b78d369f000 CR3: 0000000000101000 CR4: 00000000000006e0
Jul  2 04:00:21 opennms kernel:
Jul 2 04:00:21 opennms kernel: Call Trace: <ffffffff801425e1> {run_workqueue+159} <ffffffff80142c7a>{worker_thread+0} Jul 2 04:00:21 opennms kernel: <ffffffff80145ca3> {keventd_create_kthread+0} <ffffffff80142d83>{worker_thread+265} Jul 2 04:00:21 opennms kernel: <ffffffff8012959c> {__wake_up_common+62} <ffffffff8012ad74>{default_wake_function+0} Jul 2 04:00:21 opennms kernel: <ffffffff80145ca3> {keventd_create_kthread+0} <ffffffff80145fb6>{kthread+254} Jul 2 04:00:21 opennms kernel: <ffffffff8010b8e6>{child_rip +8} <ffffffff80145ca3>{keventd_create_kthread+0} Jul 2 04:00:21 opennms kernel: <ffffffff80339fce> {thread_return+0} <ffffffff80145eb8>{kthread+0} Jul 2 04:00:21 opennms kernel: <ffffffff8010b8de>{child_rip +0}

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