On 07/27/2014 11:28 PM, Evan Langlois wrote: > This is likely the same problem as the one I just posted about, but > with 3.16 I get call traces and my USB bus came down and I couldn't > even shut down the system. I've since gone back to my usual > 3.13/Ubuntu kernel. Here's what happened. A snippet from dmesg is > below, if anyone wants the whole thing, I've saved it. I just figured > I'd report it! > > -- Evan > > Jul 22 23:58:26 Taro kernel: [ 9257.987466] CPU: 2 PID: 0 Comm: > swapper/2 Not tainted 3.16.0-031600rc6-lowlatency #201407210035 > Jul 22 23:58:26 Taro kernel: [ 9257.987471] Hardware name: > Hewlett-Packard HP Pavilion TS 15 Notebook PC /216B, BIOS F.13 > 11/21/2013 > Jul 22 23:58:26 Taro kernel: [ 9257.987476] 00000000000001f1 > ffff88021ed03c98 ffffffff81789213 0000000000000007 > Jul 22 23:58:26 Taro kernel: [ 9257.987485] 0000000000000000 > ffff88021ed03cd8 ffffffff81071afc ffffffff815b6f00 > Jul 22 23:58:26 Taro kernel: [ 9257.987493] ffff8800a9fe8000 > ffff88021ed03d70 ffff8801ec91b680 00000001c5999000 > Jul 22 23:58:26 Taro kernel: [ 9257.987501] Call Trace: > Jul 22 23:58:26 Taro kernel: [ 9257.987506] <IRQ> > [<ffffffff81789213>] dump_stack+0x4e/0x71 > Jul 22 23:58:26 Taro kernel: [ 9257.987526] [<ffffffff81071afc>] > warn_slowpath_common+0x8c/0xc0 > Jul 22 23:58:26 Taro kernel: [ 9257.987535] [<ffffffff815b6f00>] ? > trace_xhci_dbg_ring_expansion+0xa0/0xa0 > Jul 22 23:58:26 Taro kernel: [ 9257.987542] [<ffffffff81071b4a>] > warn_slowpath_null+0x1a/0x20 > Jul 22 23:58:26 Taro kernel: [ 9257.987550] [<ffffffff815b8dd1>] > xhci_find_new_dequeue_state+0x1b1/0x2e0 > Jul 22 23:58:26 Taro kernel: [ 9257.987559] [<ffffffff815b9112>] > xhci_handle_cmd_stop_ep.isra.42+0x122/0x2b0 > Jul 22 23:58:26 Taro kernel: [ 9257.987568] [<ffffffff815ba596>] Thanks for reporting it. Looks a bit similar to the bug: https://bugzilla.kernel.org/show_bug.cgi?id=75521 If you're familiar with adding patches and re-compiling the kernel could you either - add the patch in the bug report and send me output (dmesg) when it fails. - or try this patch and see if it helps: http://marc.info/?l=linux-usb&m=140655531211275&w=2 -Mathias -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
