In the Linux kernel, the following vulnerability has been resolved:

spi: qup: fix error pointer deref after DMA setup failure

The driver falls back to PIO mode if DMA setup fails during probe.

Make sure to the clear the DMA channel pointers on setup failure to
avoid dereferencing an error pointer (or attempting to release a channel
a second time) on later probe errors or driver unbind.

This issue was flagged by Sashiko when reviewing a devres allocation
conversion patch.

https://git.kernel.org/stable/c/0bb3bd442f0bdad3932739a61dd6c580c9c1955e

https://git.kernel.org/stable/c/45760b72e84c1a1498f1a8a9047184c85299da20

https://git.kernel.org/stable/c/4bb4764f2c51f03f657a28029eb0595d8223aab5

https://git.kernel.org/stable/c/4f4051e9d644c371c50de4a042b85bba6727d5c3

https://git.kernel.org/stable/c/8f9b61d255b1e989b8913b06c8ebe0aba5e1b238

https://git.kernel.org/stable/c/9e673affb92c29d9ba879bf4ea81c5e840166b56

https://git.kernel.org/stable/c/a7e8f3efd50a165ba0189f6dc57f7e51a7d149db

https://git.kernel.org/stable/c/d577c55d189e7ae150973058d13e299b6855633f

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