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| author | Gavin Shan <gshan@redhat.com> | 2020-06-30 10:52:27 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-07-08 23:40:33 +0300 |
| commit | c377e67c6271954969384f9be1b1b71de13eba30 (patch) | |
| tree | fe793e5f2e3b90568e2baba7f525b4053cfdaf53 /drivers/firmware/psci | |
| parent | 68cf617309b5f6f3a651165f49f20af1494753ae (diff) | |
| download | linux-c377e67c6271954969384f9be1b1b71de13eba30.tar.xz | |
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/firmware/psci')
| -rw-r--r-- | drivers/firmware/psci/psci_checker.c | 5 |
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; } |