MIPS: kernel: Clear FPU states when setting up kernel threads
commit a58a1734 upstream. io_uring sets up the io worker kernel thread via a syscall out of an user space prrocess. This process might have used FPU and since copy_thread() didn't clear FPU states for kernel threads a BUG() is triggered for using FPU inside kernel. Move code around to always clear FPU state for user and kernel threads. Cc: stable@vger.kernel.org Reported-by:Aurelien Jarno <aurel32@debian.org> Closes: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1055021 Suggested-by:
Jiaxun Yang <jiaxun.yang@flygoat.com> Reviewed-by:
Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by:
Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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43801359
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