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CVE-2022-49074

irqchip/gic-v3: Fix GICR_CTLR.RWP polling

EPSS 0.2%
In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v3: Fix GICR_CTLR.RWP polling It turns out that our polling of RWP is totally wrong when checking for it in the redistributors, as we test the *distributor* bit index, whereas it is a different bit number in the RDs... Oopsie boo. This is embarassing. Not only because it is wrong, but also because it took *8 years* to notice the blunder... Just fix the damn thing.
Affected products
Linux · Linux

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References
https://git.kernel.org/stable/c/0df6664531a12cdd8fc873f0cac0dcb40243d3e9https://git.kernel.org/stable/c/3c07cc242baf83f0bddbbd9d7945d0bee56d8b57https://git.kernel.org/stable/c/60e1eb4811f53f5f60c788297d978515e7a2637ahttps://git.kernel.org/stable/c/6fef3e3179e6ed8fecdd004ede541674ffa7749dhttps://git.kernel.org/stable/c/7218a789abb3e033f5f3a85636ca50d9ae7b0fc9https://git.kernel.org/stable/c/c7daf1b4ad809692d5c26f33c02ed8a031066548https://git.kernel.org/stable/c/ff24114bb08d8b90edf2aff0a4fd0689523e6c17