Messages in this thread Patch in this message | | | From | Kangjie Lu <> | Subject | [PATCH] pci: endpoint: fix a potential NULL pointer dereference | Date | Fri, 15 Mar 2019 00:07:10 -0500 |
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In case alloc_workqueue, the fix returns -ENOMEM to avoid potential NULL pointer dereferences.
Signed-off-by: Kangjie Lu <kjlu@umn.edu> --- drivers/pci/endpoint/functions/pci-epf-test.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c index 3e86fa3c7da3..dc610eb1543a 100644 --- a/drivers/pci/endpoint/functions/pci-epf-test.c +++ b/drivers/pci/endpoint/functions/pci-epf-test.c @@ -570,6 +570,10 @@ static int __init pci_epf_test_init(void) kpcitest_workqueue = alloc_workqueue("kpcitest", WQ_MEM_RECLAIM | WQ_HIGHPRI, 0); + if (unlikely(!kpcitest_workqueue)) { + pr_err("Failed to allocate the kpcitest work queue\n"); + return -ENOMEM; + } ret = pci_epf_register_driver(&test_driver); if (ret) { pr_err("Failed to register pci epf test driver --> %d\n", ret); -- 2.17.1
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