From: Peter Zijlstra peterz@infradead.org
commit 637285e7f8d6da70a70c64e7895cb0672357a1f7 upstream.
Implement apply_returns() stub for UM, just like all the other patching routines.
Fixes: 15e67227c49a ("x86: Undo return-thunk damage") Reported-by: Randy Dunlap <rdunlap@infradead.org) Signed-off-by: Peter Zijlstra (Intel) peterz@infradead.org Signed-off-by: Richard Weinberger richard@nod.at Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/um/kernel/um_arch.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/arch/um/kernel/um_arch.c +++ b/arch/um/kernel/um_arch.c @@ -444,6 +444,10 @@ void apply_returns(s32 *start, s32 *end) { }
+void apply_returns(s32 *start, s32 *end) +{ +} + void apply_alternatives(struct alt_instr *start, struct alt_instr *end) { }