On Sat, Jun 15, 2013 at 1:07 AM, nirinA raseliarison
<[email protected]> 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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
