* [PATCH] s390/cpacf: Unpoison query results
@ 2026-08-06 19:02 Ilya Leoshkevich
0 siblings, 0 replies; only message in thread
From: Ilya Leoshkevich @ 2026-08-06 19:02 UTC (permalink / raw)
To: Harald Freudenberger, Holger Dengler, Heiko Carstens,
Vasily Gorbik, Alexander Gordeev
Cc: linux-s390, linux-kernel, Ilya Leoshkevich
Stop KMSAN from complaining about query results being uninitialized.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
---
arch/s390/include/asm/cpacf.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/s390/include/asm/cpacf.h b/arch/s390/include/asm/cpacf.h
index a83683169d98d..d4128d3fd5138 100644
--- a/arch/s390/include/asm/cpacf.h
+++ b/arch/s390/include/asm/cpacf.h
@@ -301,6 +301,7 @@ static __always_inline void __cpacf_query(unsigned int opcode,
cpacf_mask_t *mask)
{
__cpacf_query_insn(opcode, mask, CPACF_FC_QUERY);
+ kmsan_unpoison_memory(mask, sizeof(*mask));
}
static __always_inline int __cpacf_check_opcode(unsigned int opcode)
@@ -370,6 +371,7 @@ static __always_inline int cpacf_query_func(unsigned int opcode,
static __always_inline void __cpacf_qai(unsigned int opcode, cpacf_qai_t *qai)
{
__cpacf_query_insn(opcode, qai, CPACF_FC_QUERY_AUTH_INFO);
+ kmsan_unpoison_memory(qai, sizeof(*qai));
}
/**
--
2.55.0
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