Hello This appeared in my messages log:
Jul 24 07:27:41 tilesrv2 kernel: BUG: soft lockup detected on CPU#0! Jul 24 07:27:41 tilesrv2 kernel: Jul 24 07:27:41 tilesrv2 kernel: Call Trace: Jul 24 07:27:41 tilesrv2 kernel: <IRQ> [<ffffffff800b2ca3>] softlockup_tick+0xdb/0xed Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff80093424>] update_process_times+0x42/0x68 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff80073d99>] smp_local_timer_interrupt+0x23/0x47 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8007445b>] smp_apic_timer_interrupt+0x41/0x47 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8005bcc2>] apic_timer_interrupt+0x66/0x6c Jul 24 07:27:41 tilesrv2 kernel: <EOI> [<ffffffff8006270f>] .text.lock.spinlock+0x5/0x30 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff884da534>] :ocfs2_dlm:dlm_assert_master_handler+0x93d/0xd3a Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8001c239>] __mod_timer+0xb0/0xbe Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8849f3a7>] :ocfs2_nodemanager:o2net_rx_until_empty+0x0/0x9ca Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8849dfcf>] :ocfs2_nodemanager:o2net_process_message+0x3ef/0x58b Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8849fbf6>] :ocfs2_nodemanager:o2net_rx_until_empty+0x84f/0x9ca Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8849f3a7>] :ocfs2_nodemanager:o2net_rx_until_empty+0x0/0x9ca Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8004b2cf>] run_workqueue+0x94/0xe5 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff80047c2e>] worker_thread+0x0/0x122 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8009b4f6>] keventd_create_kthread+0x0/0x61 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff80047d1e>] worker_thread+0xf0/0x122 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff80086c6f>] default_wake_function+0x0/0xe Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8009b4f6>] keventd_create_kthread+0x0/0x61 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8009b4f6>] keventd_create_kthread+0x0/0x61 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff80032189>] kthread+0xfe/0x132 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8005bfe5>] child_rip+0xa/0x11 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8009b4f6>] keventd_create_kthread+0x0/0x61 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8003208b>] kthread+0x0/0x132 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8005bfdb>] child_rip+0x0/0x11 Jul 24 07:27:41 tilesrv2 kernel: Jul 24 07:27:41 tilesrv2 kernel: BUG: soft lockup detected on CPU#1! Jul 24 07:27:41 tilesrv2 kernel: Jul 24 07:27:41 tilesrv2 kernel: Call Trace: Jul 24 07:27:41 tilesrv2 kernel: <IRQ> [<ffffffff800b2ca3>] softlockup_tick+0xdb/0xed Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff80093424>] update_process_times+0x42/0x68 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff80073d99>] smp_local_timer_interrupt+0x23/0x47 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8007445b>] smp_apic_timer_interrupt+0x41/0x47 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8005bcc2>] apic_timer_interrupt+0x66/0x6c Jul 24 07:27:41 tilesrv2 kernel: <EOI> [<ffffffff884d2e44>] :ocfs2_dlm:__dlm_lookup_lockres_full+0xbe/0x108 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff884d2e55>] :ocfs2_dlm:__dlm_lookup_lockres_full+0xcf/0x108 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff884dadaf>] :ocfs2_dlm:dlm_get_lock_resource+0xcb/0x18e4 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff80061552>] __wait_on_bit+0x60/0x6f Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff80014bf0>] sync_buffer+0x0/0x3f Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff884e29d8>] :ocfs2_dlm:dlm_in_recovery+0xd/0x20 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff884e6ec1>] :ocfs2_dlm:dlm_wait_for_recovery+0xa1/0x116 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff885ecfdb>] :ocfs2:ocfs2_inode_ast_func+0x0/0x6da Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff884e0424>] :ocfs2_dlm:dlmlock+0x751/0x1220 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff885f677d>] :ocfs2:ocfs2_populate_inode+0x4d3/0x558 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8002cc23>] wake_up_bit+0x11/0x22 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff885e915a>] :ocfs2:ocfs2_cluster_unlock+0x65/0x2cb Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff885e9509>] :ocfs2:ocfs2_meta_unlock+0x121/0x180 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff885ea34a>] :ocfs2:ocfs2_lock_create+0x137/0x346 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff885ed6b5>] :ocfs2:ocfs2_inode_bast_func+0x0/0x15b Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff885ea943>] :ocfs2:ocfs2_cluster_lock+0x205/0x898 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff885e8a3e>] :ocfs2:ocfs2_status_completion_cb+0x0/0xb Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff885eeaf1>] :ocfs2:ocfs2_meta_lock_full+0x216/0xd35 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff885f7f7f>] :ocfs2:ocfs2_inode_revalidate+0x14f/0x228 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff885f2fc6>] :ocfs2:ocfs2_getattr+0x79/0x159 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8003e713>] vfs_lstat_fd+0x2f/0x47 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff885e68c1>] :ocfs2:ocfs2_readdir+0x40e/0x426 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff800252e1>] filldir+0x0/0xb7 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8002a4da>] sys_newlstat+0x19/0x31 Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8005b261>] tracesys+0x71/0xdc Jul 24 07:27:41 tilesrv2 kernel: [<ffffffff8005b2c1>] tracesys+0xd1/0xdc Dell 1959 2xQuadcore, EMC 3-20, CentOS 5 2.6.18-8.1.8.el5 OCFS2 1.2.6-1 What can cause this? Where do I start looking? Daniel
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