[PATCH v3 2/4] cpuacct: convert BUG_ON() to WARN_ON_ONCE()
From: Andrey Ryabinin <hidden>
Date: 2021-11-15 16:47:58
Also in:
lkml
Subsystem:
scheduler, the rest · Maintainers:
Ingo Molnar, Peter Zijlstra, Juri Lelli, Vincent Guittot, Linus Torvalds
Replace fatal BUG_ON() with more safe WARN_ON_ONCE() in cpuacct_cpuusage_read(). Signed-off-by: Andrey Ryabinin <redacted> Reviewed-by: Daniel Jordan <redacted> Acked-by: Tejun Heo <redacted> --- kernel/sched/cpuacct.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/sched/cpuacct.c b/kernel/sched/cpuacct.c
index 893eece65bfd..f347cf9e4634 100644
--- a/kernel/sched/cpuacct.c
+++ b/kernel/sched/cpuacct.c@@ -106,7 +106,8 @@ static u64 cpuacct_cpuusage_read(struct cpuacct *ca, int cpu, * We allow index == CPUACCT_STAT_NSTATS here to read * the sum of usages. */ - BUG_ON(index > CPUACCT_STAT_NSTATS); + if (WARN_ON_ONCE(index > CPUACCT_STAT_NSTATS)) + return 0; #ifndef CONFIG_64BIT /*
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2.32.0