Hi, Just noticed this bug while booting 2.6.33.5-rt23 on power7. --- Jun 15 02:26:21 eagle kernel: BUG: swapper/1: lock count overflow! Jun 15 02:26:21 eagle kernel: Call Trace: Jun 15 02:26:21 eagle kernel: [c0000001d379ebe0] [c000000000015494] .show_stack+0xd8/0x218 (unreliable) Jun 15 02:26:21 eagle kernel: [c0000001d379ecc0] [c0000000006a9350] .dump_stack+0x28/0x3c Jun 15 02:26:21 eagle kernel: [c0000001d379ed40] [c0000000000c96d8] .rt_mutex_deadlock_account_lock+0x5c/0xa8 Jun 15 02:26:21 eagle kernel: [c0000001d379edd0] [c0000000000c8194] .do_try_to_take_rt_mutex+0x164/0x1c0 Jun 15 02:26:21 eagle kernel: [c0000001d379ee80] [c0000000006a1cd4] .rt_spin_lock_slowlock+0x130/0x38c Jun 15 02:26:21 eagle kernel: [c0000001d379efe0] [c0000000006a2b0c] .rt_spin_lock+0x80/0x9c Jun 15 02:26:21 eagle kernel: [c0000001d379f070] [c0000000001aa0f8] .vfsmount_write_lock+0x50/0xa8 Jun 15 02:26:21 eagle kernel: [c0000001d379f100] [c0000000001abc8c] .mntput_no_expire+0x11c/0x2dc Jun 15 02:26:21 eagle kernel: [c0000001d379f1b0] [c0000000001abe90] .mntput+0x44/0x58 Jun 15 02:26:21 eagle kernel: [c0000001d379f240] [c0000000001b22e4] .simple_pin_fs+0xec/0x120 Jun 15 02:26:21 eagle kernel: [c0000001d379f2f0] [c00000000054ec0c] .usbfs_notify+0x16c/0x2f8 Jun 15 02:26:21 eagle kernel: [c0000001d379f3a0] [c0000000006a624c] .notifier_call_chain+0x74/0xec Jun 15 02:26:21 eagle kernel: [c0000001d379f450] [c0000000000b7fa0] .__blocking_notifier_call_chain+0x84/0xc8 Jun 15 02:26:21 eagle kernel: [c0000001d379f510] [c0000000000b8024] .blocking_notifier_call_chain+0x40/0x54 Jun 15 02:26:21 eagle kernel: [c0000001d379f5b0] [c00000000054c348] .usb_notify_add_bus+0x3c/0x5c Jun 15 02:26:21 eagle kernel: [c0000001d379f640] [c00000000053c7ec] .usb_add_hcd+0x178/0x6c4 Jun 15 02:26:21 eagle kernel: [c0000001d379f700] [c00000000054db10] .usb_hcd_pci_probe+0x1f4/0x2b4 Jun 15 02:26:21 eagle kernel: [c0000001d379f7b0] [c0000000003c4048] .local_pci_probe+0x4c/0x68 Jun 15 02:26:21 eagle kernel: [c0000001d379f840] [c0000000003c4558] .pci_device_probe+0xfc/0x148 Jun 15 02:26:21 eagle kernel: [c0000001d379f900] [c000000000445864] .driver_probe_device+0xe0/0x1a0 Jun 15 02:26:21 eagle kernel: [c0000001d379f9a0] [c0000000004459d0] .__driver_attach+0xac/0xf4 Jun 15 02:26:21 eagle kernel: [c0000001d379fa40] [c000000000444af8] .bus_for_each_dev+0x98/0x104 Jun 15 02:26:21 eagle kernel: [c0000001d379fb00] [c0000000004455f8] .driver_attach+0x40/0x60 Jun 15 02:26:21 eagle kernel: [c0000001d379fb90] [c000000000444094] .bus_add_driver+0x194/0x358 Jun 15 02:26:21 eagle kernel: [c0000001d379fc40] [c000000000445f18] .driver_register+0xe8/0x1ac Jun 15 02:26:21 eagle kernel: [c0000001d379fcf0] [c0000000003c48a4] .__pci_register_driver+0x84/0x134 Jun 15 02:26:21 eagle kernel: [c0000001d379fd90] [c00000000098f364] .ehci_hcd_init+0x90/0xd4 Jun 15 02:26:21 eagle kernel: [c0000001d379fe20] [c000000000009890] .do_one_initcall+0xac/0x1fc Jun 15 02:26:21 eagle kernel: [c0000001d379fed0] [c00000000095a500] .kernel_init+0x238/0x33c Jun 15 02:26:21 eagle kernel: [c0000001d379ff90] [c0000000000343e8] .kernel_thread+0x54/0x70 --- Thanks, Gowri -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
