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powerpc/pseries: fix potential memory leak in init_cpu_associativity()

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[ Upstream commit 95f1a128cd728a7257d78e868f1f5a145fc43736 ]

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

Fixes: d62c8deeb6 ("powerpc/pseries: Provide vcpu dispatch statistics")
Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Reviewed-by: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/1671003983-10794-1-git-send-email-wangyufen@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Wang Yufen 2022-12-14 15:46:23 +08:00 committed by Greg Kroah-Hartman
parent 257517c00b
commit abdd1f47ef
1 changed files with 3 additions and 1 deletions
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4
arch/powerpc/platforms/pseries/lpar.c
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@ -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);