Re: [PATCH] [BACKPORT FOR 4.4] staging: rtl8192e: rtl92e_fill_tx_desc fix write to mapped out memory.

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On 15/06/17 08:21, Greg KH wrote:
On Tue, Jun 13, 2017 at 12:38:02PM +0100, Malcolm Priestley wrote:
The driver attempts to alter memory that is mapped to PCI device.

This is because tx_fwinfo_8190pci points to skb->data

Move the pci_map_single to when completed buffer is ready to be mapped with
psdec is empty to drop on mapping error.

Signed-off-by: Malcolm Priestley <tvboxspy@xxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
Commit baabd567f87be05330faa5140f72a91960e7405a upstream

Thanks for this.

Commit 95d93e271d920dfda369d4740b1cc1061d41fe7f upstream is also required.

That one does not apply, can you provide a backport for it?


Sorry it is not needed, the bug had appeared since v4.4.

IsACValid had since changed to static function where the math error of
tid < 7 appears.

Regards


Malcolm



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