tree cf21220ae6b9ef46f02ffc636dd2b660a3d147c8
parent 88d64253785936d75323c74e7126d180e26de560
author Heiko Carstens <heiko.carstens@de.ibm.com> 1441797300 +0200
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1442490221 +0200

s390: fix floating point register corruption

The critical section cleanup code misses to add the offset of the
thread_struct to the task address.
Therefore, if the critical section code gets executed, it may corrupt
the task struct or restore the contents of the floating point registers
from the wrong memory location.
Fixes d0164ee20d "s390/kernel: remove save_fpu_regs() parameter and use
__LC_CURRENT instead".

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>