The s390 CPU measurement facility sampling mode supports basic entries and diagnostic entries. Each entry has a valid bit to indicate the status of the entry as valid or invalid.
This bit is bit 31 in the diagnostic entry, but the bit mask definition refers to bit 30.
Fix this by making the reserved field one bit larger.
Cc: stable@vger.kernel.org # v3.14+ Fixes: 7e75fc3ff4cf ("s390/cpum_sf: Add raw data sampling to support the diagnostic-sampling function") Signed-off-by: Thomas Richter tmricht@linux.ibm.com Reviewed-by: Hendrik Brueckner brueckner@linux.vnet.ibm.com --- arch/s390/include/asm/cpu_mf.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/s390/include/asm/cpu_mf.h b/arch/s390/include/asm/cpu_mf.h index f58d17e9dd65..7093a27520ee 100644 --- a/arch/s390/include/asm/cpu_mf.h +++ b/arch/s390/include/asm/cpu_mf.h @@ -113,7 +113,7 @@ struct hws_basic_entry {
struct hws_diag_entry { unsigned int def:16; /* 0-15 Data Entry Format */ - unsigned int R:14; /* 16-19 and 20-30 reserved */ + unsigned int R:15; /* 16-19 and 20-30 reserved */ unsigned int I:1; /* 31 entry valid or invalid */ u8 data[]; /* Machine-dependent sample data */ } __packed;