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| author | Gavin Shan <gshan@redhat.com> | 2020-06-30 17:52:27 +1000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-29 10:18:28 +0200 |
| commit | 96002e7485be855e532e4c8e42e86904b50b1008 (patch) | |
| tree | 2888660e9052a8c8da6738840a0b7e032701453e /drivers/firmware | |
| parent | d0e40e510aa7f7772b2ce39d42ad6b6dbf458402 (diff) | |
| download | linux-96002e7485be855e532e4c8e42e86904b50b1008.tar.gz linux-96002e7485be855e532e4c8e42e86904b50b1008.tar.bz2 linux-96002e7485be855e532e4c8e42e86904b50b1008.zip | |
drivers/firmware/psci: Fix memory leakage in alloc_init_cpu_groups()
[ Upstream commit c377e67c6271954969384f9be1b1b71de13eba30 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/firmware')
| -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 6a445397771c..03eb798ad3ed 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; } |