The following commit has been merged into the x86/urgent branch of tip: Commit-ID: 564d998106397394b6aad260f219b882b3347e62 Gitweb: https://git.kernel.org/tip/564d998106397394b6aad260f219b882b3347e62 Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx> AuthorDate: Thu, 14 Jul 2022 12:20:19 +02:00 Committer: Borislav Petkov <bp@xxxxxxx> CommitterDate: Thu, 14 Jul 2022 13:40:21 +02:00 um: Add missing apply_returns() 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@xxxxxxxxxxxxx) Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> Signed-off-by: Borislav Petkov <bp@xxxxxxx> Link: https://lore.kernel.org/r/Ys%2Ft45l%2FgarIrD0u@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx --- arch/um/kernel/um_arch.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c index 0760e24..9838967 100644 --- a/arch/um/kernel/um_arch.c +++ b/arch/um/kernel/um_arch.c @@ -432,6 +432,10 @@ void apply_retpolines(s32 *start, s32 *end) { } +void apply_returns(s32 *start, s32 *end) +{ +} + void apply_alternatives(struct alt_instr *start, struct alt_instr *end) { }
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