KVM: s390/diag: fix racy access of physical cpu number in diag 9c handler

We do check for target CPU == -1, but this might change at the time we
are going to use it. Hold the physical target CPU in a local variable to
avoid out-of-bound accesses to the cpu arrays.

Cc: Pierre Morel <[email protected]>
Fixes: 87e28a15c42c ("KVM: s390: diag9c (directed yield) forwarding")
Reported-by: Marc Hartmayer <[email protected]>
Reviewed-by: Nico Boehr <[email protected]>
Reviewed-by: Pierre Morel <[email protected]>
Signed-off-by: Christian Borntraeger <[email protected]>
Signed-off-by: Janosch Frank <[email protected]>

0 files changed, 0 insertions, 0 deletions