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authorCalvin Walton <calvin.walton@kepstin.ca>2021-04-28 17:09:16 +0800
committerLen Brown <len.brown@intel.com>2021-05-04 18:33:41 -0400
commit13a779de4175df602366d129e41782ad7168cef0 (patch)
tree8405a2d05e136f55d667267ecb047f9e29ef96bc /tools/power
parent301b1d3a9104f4f3a8ab4171cf88d0f55d632b41 (diff)
tools/power turbostat: Fix offset overflow issue in index converting
The idx_to_offset() function returns type int (32-bit signed), but MSR_PKG_ENERGY_STAT is u32 and would be interpreted as a negative number. The end result is that it hits the if (offset < 0) check in update_msr_sum() which prevents the timer callback from updating the stat in the background when long durations are used. The similar issue exists in offset_to_idx() and update_msr_sum(). Fix this issue by converting the 'int' to 'off_t' accordingly. Fixes: 9972d5d84d76 ("tools/power turbostat: Enable accumulate RAPL display") Signed-off-by: Calvin Walton <calvin.walton@kepstin.ca> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'tools/power')
-rw-r--r--tools/power/x86/turbostat/turbostat.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index b5f4ec24fea9..f3cb06a115b5 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -296,9 +296,9 @@ struct msr_sum_array {
/* The percpu MSR sum array.*/
struct msr_sum_array *per_cpu_msr_sum;
-int idx_to_offset(int idx)
+off_t idx_to_offset(int idx)
{
- int offset;
+ off_t offset;
switch (idx) {
case IDX_PKG_ENERGY:
@@ -328,7 +328,7 @@ int idx_to_offset(int idx)
return offset;
}
-int offset_to_idx(int offset)
+int offset_to_idx(off_t offset)
{
int idx;
@@ -3338,7 +3338,7 @@ static int update_msr_sum(struct thread_data *t, struct core_data *c, struct pkg
for (i = IDX_PKG_ENERGY; i < IDX_COUNT; i++) {
unsigned long long msr_cur, msr_last;
- int offset;
+ off_t offset;
if (!idx_valid(i))
continue;
@@ -3347,7 +3347,8 @@ static int update_msr_sum(struct thread_data *t, struct core_data *c, struct pkg
continue;
ret = get_msr(cpu, offset, &msr_cur);
if (ret) {
- fprintf(outf, "Can not update msr(0x%x)\n", offset);
+ fprintf(outf, "Can not update msr(0x%llx)\n",
+ (unsigned long long)offset);
continue;
}