Herbert Xu wrote:
Daniel Drake <[EMAIL PROTECTED]> wrote:
More specifically, we're talking about drivers/usb/net/usbnet.c and the
usbnet_disconnect() function. The race I am highlighting is that
usbnet's hard_start_xmit handler (usbnet_start_xmit) may be running when
the disconnect happens.
Is this a possible scenario?
It should be safe, if only because of the synchronize_net that occurs
before a netdev can be freed.
Can I interpret your response as: If the TX queue is disabled in
advance, no hard_start_xmit functions will be running on any CPU after
synchronize_net() has returned?
The synchronize_net() code doesn't make it very clear.
Thanks,
Daniel
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