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  1. Bug #1308537
  2. Comment #10

Comment 10 for bug 1308537

Revision history for this message
Luis Henriques (henrix) wrote :

Moez, looks like you're hitting a bug that hasn't been fixed upstream yet. I've took a look at the usb_wwan driver and it seems that function usb_wwan_write() is missing a NULL check to 'this_urb' variable.

I've added this check (see patch attached) and compiled a test kernel . Could you please give this kernel a try and report back after some good amount of testing? I would like you to run this test for a while and post the kernel logs -- if this patch actually solves the problem, you should see something like 'usb_wwan_write: Invalid URB' in the logs.

Here's the link to the test kernel:

http://people.canonical.com/~henrix/lp1308537/v1/