# \[PATCH v2\] powerpc/pseries: fix potential memory leak in init\_cpu\_associativity()

- From: Wang Yufen \<hidden\>
- Date: 2022-12-14 07:47:39 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2022/12/9529456
- Thread: https://ratatoskr.run/linuxppc-dev/2022/12/9529456/t.md

```text
If the vcpu_associativity alloc memory successfully but the
pcpu_associativity fails to alloc memory, the vcpu_associativity
memory leaks.

Fixes: d62c8deeb6e6 ("powerpc/pseries: Provide vcpu dispatch statistics")
Signed-off-by: Wang Yufen <redacted>
---
 arch/powerpc/platforms/pseries/lpar.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 97ef649..bb24545 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -524,8 +524,10 @@ static ssize_t vcpudispatch_stats_write(struct file *file, const char __user *p,
 
 	if (cmd) {
 		rc = init_cpu_associativity();
-		if (rc)
+		if (rc) {
+			destroy_cpu_associativity();
 			goto out;
+		}
 
 		for_each_possible_cpu(cpu) {
 			disp = per_cpu_ptr(&vcpu_disp_data, cpu);
-- 
1.8.3.1

```