In the Linux kernel, the following vulnerability has been resolved: parisc: Drop WARN_ON_ONCE() from flush_cache_vmap I have observed warning to occassionally trigger.
https://git.kernel.org/stable/c/8f8a07ad04da5b3c90fab61c33d4a8256a680591
https://git.kernel.org/stable/c/69cf90e5aa50fe3cb0c1a63cabc4761db44b0035
https://git.kernel.org/stable/c/4eab1c27ce1f0e89ab67b01bf1e4e4c75215708a
https://git.kernel.org/stable/c/4afb1352b85d7deb777694fba16d13c30c08776f