This is a note to let you know that I've just added the patch titled
powerpc/pseries: fix potential memory leak in init_cpu_associativity()
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-pseries-fix-potential-memory-leak-in-init_cp.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 50d3fd64250fa8af779b91a74d3b826f34fea471
Author: Wang Yufen <wangyufen@xxxxxxxxxx>
Date: Wed Dec 14 15:46:23 2022 +0800
powerpc/pseries: fix potential memory leak in init_cpu_associativity()
[ Upstream commit 95f1a128cd728a7257d78e868f1f5a145fc43736 ]
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 <wangyufen@xxxxxxxxxx>
Reviewed-by: "Naveen N. Rao" <naveen.n.rao@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://msgid.link/1671003983-10794-1-git-send-email-wangyufen@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index d133597a84ca0..fce0237b07155 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);
