diff mbox series

PCI: endpoint: check the return value of alloc_workqueue()

Message ID 20220723064339.2957069-1-williamsukatube@163.com (mailing list archive)
State New, archived
Delegated to: Lorenzo Pieralisi
Headers show
Series PCI: endpoint: check the return value of alloc_workqueue() | expand

Commit Message

williamsukatube@163.com July 23, 2022, 6:43 a.m. UTC 
From: William Dean <williamsukatube@gmail.com>

The function alloc_workqueue() in epf_ntb_init() can
fail, but there is no check of its return value. To fix this bug, its
return value should be checked with new error handling code.

Fixes: 8b821cf761503 ("PCI: endpoint: Add EP function driver to provide NTB functionality")
Reported-by: Hacash Robot <hacashRobot@santino.com>
Signed-off-by: William Dean <williamsukatube@gmail.com>
---
 drivers/pci/endpoint/functions/pci-epf-ntb.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/drivers/pci/endpoint/functions/pci-epf-ntb.c b/drivers/pci/endpoint/functions/pci-epf-ntb.c
index 9a00448c7e61..41d85591cd1e 100644
--- a/drivers/pci/endpoint/functions/pci-epf-ntb.c
+++ b/drivers/pci/endpoint/functions/pci-epf-ntb.c
@@ -2124,6 +2124,11 @@  static int __init epf_ntb_init(void)
 
 	kpcintb_workqueue = alloc_workqueue("kpcintb", WQ_MEM_RECLAIM |
 					    WQ_HIGHPRI, 0);
+	if (!kpcintb_workqueue) {
+		pr_err("Failed to alloc kpcintb workqueue\n");
+		return -ENOMEM;
+	}
+
 	ret = pci_epf_register_driver(&epf_ntb_driver);
 	if (ret) {
 		destroy_workqueue(kpcintb_workqueue);