From: Miquel Sabaté Solà <mikisabate@xxxxxxxxx> commit c0f02536fffbbec71aced36d52a765f8c4493dc2 upstream. In the parse_perf_domain function, if the call to of_parse_phandle_with_args returns an error, then the reference to the CPU device node that was acquired at the start of the function would not be properly decremented. Address this by declaring the variable with the __free(device_node) cleanup attribute. Signed-off-by: Miquel Sabaté Solà <mikisabate@xxxxxxxxx> Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx> Link: https://patch.msgid.link/20240917134246.584026-1-mikisabate@xxxxxxxxx Cc: All applicable <stable@xxxxxxxxxxxxxxx> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- include/linux/cpufreq.h | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -1124,10 +1124,9 @@ static inline int parse_perf_domain(int const char *cell_name, struct of_phandle_args *args) { - struct device_node *cpu_np; int ret; - cpu_np = of_cpu_device_node_get(cpu); + struct device_node *cpu_np __free(device_node) = of_cpu_device_node_get(cpu); if (!cpu_np) return -ENODEV; @@ -1135,9 +1134,6 @@ static inline int parse_perf_domain(int args); if (ret < 0) return ret; - - of_node_put(cpu_np); - return 0; } Patches currently in stable-queue which might be from mikisabate@xxxxxxxxx are queue-6.6/cpufreq-avoid-a-bad-reference-count-on-cpu-node.patch
