x86/MSR: Filter MSR writes through X86_IOC_WRMSR_REGS ioctl too
Commit a7e1f67e ("x86/msr: Filter MSR writes") introduced a module parameter to disable writing to the MSR device file and tainted the kernel upon writing. As MSR registers can be written by the X86_IOC_WRMSR_REGS ioctl too, the same filtering and tainting should be applied to the ioctl as well. [ bp: Massage commit message and space out statements. ] Fixes: a7e1f67e ("x86/msr: Filter MSR writes") Signed-off-by:Misono Tomohiro <misono.tomohiro@jp.fujitsu.com> Signed-off-by:
Borislav Petkov <bp@suse.de> Link: https://lkml.kernel.org/r/20210127122456.13939-1-misono.tomohiro@jp.fujitsu.com
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