On Sat, Jun 15, 2013 at 1:07 AM, nirinA raseliarison
<nirina.raseliari...@gmail.com> wrote:
> patch applied and no longer have the bug message when i
> reboot and wake up the ethernet controller.
I am wondering if Guenter's patch can fix the race really, but I'd like to
see Guenter's explanation on his patch.
The race should be caused by below:
- request timeout triggered by internal timer
- user space aborts the requests before the line in _request_firmware_load()
fw_priv->buf = NULL
which is run in timeout path
- then the abort() called from firmware_loading_store() may use a freed fw buf
since the timeout path will free the fw buffer.
Considered clearing 'fw_priv->buf' in _request_firmware_load()() isn't protected
by fw_lock now, so Guenter's patch can't avoid the race entirely.
Thanks,
--
Ming Lei
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