diff options
| author | Ilya Leoshkevich <[email protected]> | 2024-06-21 13:35:10 +0200 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2024-07-03 19:30:24 -0700 |
| commit | 8c208bc5b299a817beafbda239800d4d1eca48db (patch) | |
| tree | f7bac71cded7c4958a878328d8d1e16dd39e3b39 | |
| parent | e1b1c7f941712f20e0ce71ad181eba568865cdc2 (diff) | |
s390/cpacf: unpoison the results of cpacf_trng()
Prevent KMSAN from complaining about buffers filled by cpacf_trng() being
uninitialized.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Ilya Leoshkevich <[email protected]>
Tested-by: Alexander Gordeev <[email protected]>
Reviewed-by: Alexander Potapenko <[email protected]>
Acked-by: Heiko Carstens <[email protected]>
Cc: Christian Borntraeger <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Hyeonggon Yoo <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: <[email protected]>
Cc: Marco Elver <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Masami Hiramatsu (Google) <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: Roman Gushchin <[email protected]>
Cc: Steven Rostedt (Google) <[email protected]>
Cc: Sven Schnelle <[email protected]>
Cc: Vasily Gorbik <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
| -rw-r--r-- | arch/s390/include/asm/cpacf.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/include/asm/cpacf.h b/arch/s390/include/asm/cpacf.h index c786538e397c..dae8843b164f 100644 --- a/arch/s390/include/asm/cpacf.h +++ b/arch/s390/include/asm/cpacf.h @@ -12,6 +12,7 @@ #define _ASM_S390_CPACF_H #include <asm/facility.h> +#include <linux/kmsan-checks.h> /* * Instruction opcodes for the CPACF instructions @@ -542,6 +543,8 @@ static inline void cpacf_trng(u8 *ucbuf, unsigned long ucbuf_len, : [ucbuf] "+&d" (u.pair), [cbuf] "+&d" (c.pair) : [fc] "K" (CPACF_PRNO_TRNG), [opc] "i" (CPACF_PRNO) : "cc", "memory", "0"); + kmsan_unpoison_memory(ucbuf, ucbuf_len); + kmsan_unpoison_memory(cbuf, cbuf_len); } /** |