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irqbalance: Check validity of numa_node

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If Linux maps an IRQ associated with an empty node (hence not exposed
under /sys/devices/system/node/), irq_numa_node(info) will be set to
NULL, leading to a core dump in place_irq_in_node().

Add a warning for this unusual condition and set ->numa_node to the
the default entry.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
This commit is contained in:
Cédric Le Goater 2021-08-06 19:48:53 +02:00
parent faae34d9b0
commit 5eab20352d
1 changed files with 5 additions and 0 deletions
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5
classify.c
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@ -376,6 +376,11 @@ get_numa_node:
else
new->numa_node = get_numa_node(numa_node);
if (!new->numa_node) {
log(TO_CONSOLE, LOG_WARNING, "IRQ %d has an unknown node\n", irq);
new->numa_node = get_numa_node(NUMA_NO_NODE);
}
cpus_setall(new->cpumask);
if (devpath != NULL) {
sprintf(path, "%s/local_cpus", devpath);