From: Sumera Priyadarsini sylphrenadin@gmail.com
mainline inclusion from mainline-v5.11-rc6 commit 1740e6736922cc1a5d061cc4240d08eacfbbaa71 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I7R8MK CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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Every iteration of for_each_available_child_of_node() decrements the reference count of the previous node, however when control is transferred from the middle of the loop, as in the case of a return or break or goto, there is no decrement thus ultimately resulting in a memory leak.
Fix a potential memory leak in arm-integrator-lm.c by inserting of_node_put() before a return statement.
Issue found with Coccinelle.
Signed-off-by: Sumera Priyadarsini sylphrenadin@gmail.com Signed-off-by: Linus Walleij linus.walleij@linaro.org Link: https://lore.kernel.org/r/20200829174154.GA9319@Kaladin Link: https://lore.kernel.org/r/20210112092549.251548-1-linus.walleij@linaro.org' Signed-off-by: Arnd Bergmann arnd@arndb.de Signed-off-by: Guo Mengqi guomengqi3@huawei.com --- drivers/bus/arm-integrator-lm.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/bus/arm-integrator-lm.c b/drivers/bus/arm-integrator-lm.c index 845b6c43fef8..2344d560b144 100644 --- a/drivers/bus/arm-integrator-lm.c +++ b/drivers/bus/arm-integrator-lm.c @@ -54,6 +54,7 @@ static int integrator_lm_populate(int num, struct device *dev) ret = of_platform_default_populate(child, NULL, dev); if (ret) { dev_err(dev, "failed to populate module\n"); + of_node_put(child); return ret; } }