This is a note to let you know that I've just added the patch titled sched/vtime: Work around an unitialized variable warning to the 5.6-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: sched-vtime-work-around-an-unitialized-variable-warn.patch and it can be found in the queue-5.6 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit c7313db924e1f3b316754ccb380eda1a4169ada0 Author: Borislav Petkov <bp@xxxxxxx> Date: Fri Mar 27 22:43:34 2020 +0100 sched/vtime: Work around an unitialized variable warning [ Upstream commit e0d648f9d883ec1efab261af158d73aa30e9dd12 ] Work around this warning: kernel/sched/cputime.c: In function â??kcpustat_fieldâ??: kernel/sched/cputime.c:1007:6: warning: â??valâ?? may be used uninitialized in this function [-Wmaybe-uninitialized] because GCC can't see that val is used only when err is 0. Acked-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Signed-off-by: Borislav Petkov <bp@xxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> Link: https://lore.kernel.org/r/20200327214334.GF8015@xxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index dac9104d126f7..ff9435dee1df2 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -1003,12 +1003,12 @@ u64 kcpustat_field(struct kernel_cpustat *kcpustat, enum cpu_usage_stat usage, int cpu) { u64 *cpustat = kcpustat->cpustat; + u64 val = cpustat[usage]; struct rq *rq; - u64 val; int err; if (!vtime_accounting_enabled_cpu(cpu)) - return cpustat[usage]; + return val; rq = cpu_rq(cpu);