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Change History

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

parisc: BTLB: Fix crash when setting up BTLB at CPU bringup

When using hotplug and bringing up a 32-bit CPU, ask the firmware about the
BTLB information to set up the static (block) TLB entries.

For that write access to the static btlb_info struct is needed, but
since it is marked __ro_after_init the kernel segfaults with missing
write permissions.

Fix the crash by dropping the __ro_after_init annotation.

kernel.org https://git.kernel.org/stable/c/54944f45470af5965fb9c28cf962ec30f38a8f5b [No types assigned]

kernel.org https://git.kernel.org/stable/c/913b9d443a0180cf0de3548f1ab3149378998486 [No types assigned]

kernel.org https://git.kernel.org/stable/c/aa52be55276614d33f22fbe7da36c40d6432d10b [No types assigned]