* [PATCH v1] kernel/irq/manage: check return value of irq_data_get_irq_chip()
@ 2022-09-17 1:53 Li Zhong
0 siblings, 0 replies; only message in thread
From: Li Zhong @ 2022-09-17 1:53 UTC (permalink / raw)
To: linux-kernel; +Cc: tglx, Li Zhong
Check the return value chip of irq_data_get_irq_chip(), which could be
NULL and result in null pointer dereference if unchecked.
Signed-off-by: Li Zhong <floridsleeves@gmail.com>
---
kernel/irq/manage.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 40fe7806cc8c..1f967050338b 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -202,6 +202,8 @@ static void irq_validate_effective_affinity(struct irq_data *data)
if (!cpumask_empty(m))
return;
+ if (!chip)
+ return;
pr_warn_once("irq_chip %s did not update eff. affinity mask of irq %u\n",
chip->name, data->irq);
}
--
2.25.1
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2022-09-17 1:54 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-09-17 1:53 [PATCH v1] kernel/irq/manage: check return value of irq_data_get_irq_chip() Li Zhong
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®