Messages in this thread | | | From | Dawson Engler <> | Subject | [CHECKER] deadlock in 2.5.62 drivers/usb/host/uhci-hcd.c? | Date | Sat, 22 Mar 2003 01:36:52 -0800 (PST) |
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Hi All,
there appears to be a potential locking cycle in 2.5.62's drivers/usb/host/uhci-hcd.c Though it looks like its in debugging code.
Confirmation/destruction appreciated.
<struct urb.lock (<local>:0)>-><struct uhci_hcd.complete_list_lock (<local>:0)> occurred 1 times <struct uhci_hcd.complete_list_lock (<local>:0)>-><struct urb.lock (<local>:0)> occurred 1 times Lock <struct urb.lock> is involved in <1> errors and <struct uhci_hcd.complete_list_lock> in 1
Callchain for <struct urb.lock (<local>:0)>-><struct uhci_hcd.complete_list_lock (<local>:0)> =
depth = 2: drivers/usb/host/uhci-hcd.c:uhci_transfer_result:1507 spin_lock_irqsave(&urb->lock, flags);
->drivers/usb/host/uhci-hcd.c:uhci_transfer_result:1507 ->uhci_transfer_result:1568 ->end=uhci_add_complete:138:spin_lock_irq
spin_lock_irqsave(&uhci->complete_list_lock, flags);
Callchain for <struct uhci_hcd.complete_list_lock (<local>:0)>-><struct urb.lock (<local>:0)> = depth = 2: drivers/usb/host/uhci-debug.c:uhci_show_lists:395 ->drivers/usb/host/uhci-debug.c:uhci_show_lists:395 ->uhci_show_lists:407
spin_lock_irqsave(&uhci->complete_list_lock, flags);
->end=uhci_show_urbp:328:spin_lock ->drivers/usb/host/uhci-debug.c:uhci_show_urbp:328
spin_lock(&urbp->urb->lock);
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