linux_dsm_epyc7002/tools/power
Calvin Walton ea6803ff2c tools/power turbostat: Fix offset overflow issue in index converting
commit 13a779de4175df602366d129e41782ad7168cef0 upstream.

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: 9972d5d84d ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-11 14:47:40 +02:00
..
acpi tools: Factor HOSTCC, HOSTLD, HOSTAR definitions 2021-01-30 13:55:19 +01:00
cpupower More power management updates for 5.10-rc1 2020-10-23 16:27:03 -07:00
pm-graph notifier: Fix broken error handling pattern 2020-09-01 09:58:03 +02:00
x86 tools/power turbostat: Fix offset overflow issue in index converting 2021-05-11 14:47:40 +02:00