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authorGavin Shan <gshan@redhat.com>2020-06-30 17:52:27 +1000
committerWill Deacon <will@kernel.org>2020-07-08 21:40:33 +0100
commitc377e67c6271954969384f9be1b1b71de13eba30 (patch)
treefe793e5f2e3b90568e2baba7f525b4053cfdaf53 /drivers
parent68cf617309b5f6f3a651165f49f20af1494753ae (diff)
downloadlinux-c377e67c6271954969384f9be1b1b71de13eba30.tar.bz2
drivers/firmware/psci: Fix memory leakage in alloc_init_cpu_groups()
The CPU mask (@tmp) should be released on failing to allocate @cpu_groups or any of its elements. Otherwise, it leads to memory leakage because the CPU mask variable is dynamically allocated when CONFIG_CPUMASK_OFFSTACK is enabled. Signed-off-by: Gavin Shan <gshan@redhat.com> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Link: https://lore.kernel.org/r/20200630075227.199624-1-gshan@redhat.com Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/firmware/psci/psci_checker.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/firmware/psci/psci_checker.c b/drivers/firmware/psci/psci_checker.c
index 873841af8d57..d9b1a2d71223 100644
--- a/drivers/firmware/psci/psci_checker.c
+++ b/drivers/firmware/psci/psci_checker.c
@@ -157,8 +157,10 @@ static int alloc_init_cpu_groups(cpumask_var_t **pcpu_groups)
cpu_groups = kcalloc(nb_available_cpus, sizeof(cpu_groups),
GFP_KERNEL);
- if (!cpu_groups)
+ if (!cpu_groups) {
+ free_cpumask_var(tmp);
return -ENOMEM;
+ }
cpumask_copy(tmp, cpu_online_mask);
@@ -167,6 +169,7 @@ static int alloc_init_cpu_groups(cpumask_var_t **pcpu_groups)
topology_core_cpumask(cpumask_any(tmp));
if (!alloc_cpumask_var(&cpu_groups[num_groups], GFP_KERNEL)) {
+ free_cpumask_var(tmp);
free_cpu_groups(num_groups, &cpu_groups);
return -ENOMEM;
}