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Date: Fri, 10 Aug 2012 13:27:42 +0800 From: Daniel J Blueman <daniel@...ra.org> To: Matt Carlson <mcarlson@...adcom.com>, Michael Chan <mchan@...adcom.com> Cc: Linux Kernel <linux-kernel@...r.kernel.org>, Netdev <netdev@...r.kernel.org> Subject: [3.5.1] tg3 waitqueue hang on hotplug remove... Hi Matt, Michael, On my Macbook Retina with 3.5.1, I see the tg3 external adapter (via Thunderbolt) get logically disconnected after a while despite remaining connected (Thunderbolt issues). The problem is though, that the pciehp_wq workqueue fails to complete flushing from the call to pcie_cleanup_slot (inlined in pciehp_release_ctrl) [1]; looks like tg3_tx or so is missing a finish_wait(), no? Daniel --- [1] pcieport 0000:00:01.0: irq 42 for MSI/MSI-X pcieport 0000:00:01.1: irq 43 for MSI/MSI-X pcieport 0000:00:01.2: irq 44 for MSI/MSI-X pcieport 0000:05:00.0: irq 45 for MSI/MSI-X pcieport 0000:06:00.0: irq 46 for MSI/MSI-X pcieport 0000:06:03.0: irq 47 for MSI/MSI-X pcieport 0000:06:04.0: irq 48 for MSI/MSI-X pcieport 0000:06:05.0: irq 49 for MSI/MSI-X pcieport 0000:06:06.0: irq 50 for MSI/MSI-X pcieport 0000:08:00.0: irq 51 for MSI/MSI-X pcieport 0000:09:00.0: irq 52 for MSI/MSI-X pci_hotplug: PCI Hot Plug PCI Core version: 0.5 pciehp 0000:06:00.0:pcie24: HPC vendor_id 8086 device_id 1547 ss_vid 2222 ss_did 1111 pciehp 0000:06:00.0:pcie24: service driver pciehp loaded pciehp 0000:06:03.0:pcie24: HPC vendor_id 8086 device_id 1547 ss_vid 2222 ss_did 1111 pciehp 0000:06:03.0:pcie24: service driver pciehp loaded pciehp 0000:06:04.0:pcie24: HPC vendor_id 8086 device_id 1547 ss_vid 2222 ss_did 1111 pciehp 0000:06:04.0:pcie24: service driver pciehp loaded pciehp 0000:06:05.0:pcie24: HPC vendor_id 8086 device_id 1547 ss_vid 2222 ss_did 1111 pciehp 0000:06:05.0:pcie24: service driver pciehp loaded pciehp 0000:06:06.0:pcie24: HPC vendor_id 8086 device_id 1547 ss_vid 2222 ss_did 1111 pciehp 0000:06:06.0:pcie24: service driver pciehp loaded pciehp 0000:09:00.0:pcie24: HPC vendor_id 8086 device_id 1549 ss_vid 0 ss_did 0 pciehp 0000:09:00.0:pcie24: service driver pciehp loaded pciehp: PCI Express Hot Plug Controller Driver version: 0.4 tg3 0000:0a:00.0: eth0: Tigon3 [partno(BCM957762) rev 57766000] (PCI Express) MAC address 40:6c:8f:36:1a:67 tg3 0000:0a:00.0: eth0: attached PHY is 57765 (10/100/1000Base-T Ethernet) (WireSpeed[1], EEE[0]) tg3 0000:0a:00.0: eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] TSOcap[1] tg3 0000:0a:00.0: eth0: dma_rwctrl[00000001] dma_mask[64-bit] ... pciehp 0000:06:03.0:pcie24: Card not present on Slot(3) tg3 0000:0a:00.0: tg3_abort_hw timed out, TX_MODE_ENABLE will not clear MAC_TX_MODE=ffffffff tg3 0000:0a:00.0: eth1: No firmware running tg3 0000:0a:00.0: eth1: Link is down [sched_delayed] sched: RT throttling activated pciehp 0000:09:00.0:pcie24: unloading service driver pciehp INFO: task kworker/0:2:3072 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/0:2 D ffffffff8180cc20 0 3072 2 0x00000000 ffff880237f75800 0000000000000046 0000000000000001 ffff880237f757b0 ffff880237f75fd8 ffff880237f75fd8 ffff880237f75fd8 0000000000013940 ffff88025f3b5c00 ffff880237eb5c00 0000000000000000 7fffffffffffffff Call Trace: [<ffffffff816966e9>] schedule+0x29/0x70 [<ffffffff81694e05>] schedule_timeout+0x2a5/0x320 [<ffffffff81040af9>] ? default_spin_lock_flags+0x9/0x10 [<ffffffff811ee0f9>] ? pde_put+0x79/0xa0 [<ffffffff8169653f>] wait_for_common+0xdf/0x180 [<ffffffff811ee0f9>] ? pde_put+0x79/0xa0 [<ffffffff8108a360>] ? try_to_wake_up+0x200/0x200 [<ffffffff816966bd>] wait_for_completion+0x1d/0x20 [<ffffffff81070ec3>] flush_workqueue+0x143/0x400 [<ffffffff8136d600>] ? pciehp_disable_slot+0x1f0/0x1f0 [<ffffffff8136f986>] pciehp_release_ctrl+0x46/0xa0 [<ffffffff8136c037>] pciehp_remove+0x27/0x30 [<ffffffff81365167>] pcie_port_remove_service+0x57/0x70 [<ffffffff81423abc>] __device_release_driver+0x7c/0xe0 [<ffffffff81423b4c>] device_release_driver+0x2c/0x40 [<ffffffff81423551>] bus_remove_device+0xe1/0x120 [<ffffffff81365480>] ? resume_iter+0x40/0x40 [<ffffffff81420d60>] device_del+0x120/0x1b0 [<ffffffff81365480>] ? resume_iter+0x40/0x40 [<ffffffff81420e06>] device_unregister+0x16/0x30 [<ffffffff813654bd>] remove_iter+0x3d/0x50 [<ffffffff8141fe64>] device_for_each_child+0x44/0x70 [<ffffffff81365a16>] pcie_port_device_remove+0x26/0x40 [<ffffffff81365b56>] pcie_portdrv_remove+0x16/0x30 [<ffffffff8135e426>] pci_device_remove+0x46/0x110 [<ffffffff81423abc>] __device_release_driver+0x7c/0xe0 [<ffffffff81423b4c>] device_release_driver+0x2c/0x40 [<ffffffff81423551>] bus_remove_device+0xe1/0x120 [<ffffffff81420d60>] device_del+0x120/0x1b0 [<ffffffff81420e06>] device_unregister+0x16/0x30 [<ffffffff81357c64>] pci_stop_bus_device+0x94/0xa0 [<ffffffff81357c13>] pci_stop_bus_device+0x43/0xa0 [<ffffffff81357e16>] pci_stop_and_remove_bus_device+0x16/0x30 [<ffffffff8136db61>] pciehp_unconfigure_device+0x91/0x190 [<ffffffff8136d485>] pciehp_disable_slot+0x75/0x1f0 [<ffffffff8136d6e3>] pciehp_power_thread+0xe3/0x110 [<ffffffff81071a3a>] process_one_work+0x11a/0x480 [<ffffffff81072ac5>] worker_thread+0x165/0x370 [<ffffffff81072960>] ? manage_workers.isra.29+0x130/0x130 [<ffffffff81077873>] kthread+0x93/0xa0 [<ffffffff816a1164>] kernel_thread_helper+0x4/0x10 [<ffffffff810777e0>] ? kthread_freezable_should_stop+0x70/0x70 [<ffffffff816a1160>] ? gs_change+0x13/0x13 -- Daniel J Blueman -- 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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