Messages in this thread | | | Subject | Re: [BUG] kaweth: a possible sleep-in-atomic bug in kaweth_start_xmit | From | Oliver Neukum <> | Date | Wed, 13 Dec 2017 10:21:29 +0100 |
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Am Mittwoch, den 13.12.2017, 16:57 +0800 schrieb Jia-Ju Bai: > According to drivers/net/usb/kaweth.c, the driver may sleep under a > spinlock. > The function call path is: > kaweth_start_xmit (acquire the spinlock) > kaweth_async_set_rx_mode > kaweth_control > kaweth_internal_control_msg > usb_start_wait_urb > wait_event_timeout --> may sleep > usb_kill_urb --> may sleep > > I do not find a good way to fix it, so I only report. > This possible bug is found by my static analysis tool (DSAC) and checked > by my code review. >
Hi,
thanks for reporting. I need to get out my old test device. It will take a few days. The obvious fix would be to set this filter only on initialization. Unfortunately this needs to be tested.
Regards Oliver
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