mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 00:20:51 +07:00
oprofile: fix CPU unplug panic in ppro_stop()
If oprofile statically compiled in kernel, a cpu unplug triggers a panic in ppro_stop(), because a NULL pointer is dereferenced. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
This commit is contained in:
parent
061e41fdb5
commit
9ea84ad77d
@ -156,6 +156,8 @@ static void ppro_start(struct op_msrs const * const msrs)
|
||||
unsigned int low, high;
|
||||
int i;
|
||||
|
||||
if (!reset_value)
|
||||
return;
|
||||
for (i = 0; i < num_counters; ++i) {
|
||||
if (reset_value[i]) {
|
||||
CTRL_READ(low, high, msrs, i);
|
||||
@ -171,6 +173,8 @@ static void ppro_stop(struct op_msrs const * const msrs)
|
||||
unsigned int low, high;
|
||||
int i;
|
||||
|
||||
if (!reset_value)
|
||||
return;
|
||||
for (i = 0; i < num_counters; ++i) {
|
||||
if (!reset_value[i])
|
||||
continue;
|
||||
|
Loading…
Reference in New Issue
Block a user