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| author |   Dan Carpenter <dan.carpenter@oracle.com> | 2017-09-30 11:16:51 +0300 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2017-10-31 15:33:39 -0500 |
| commit | a2db2663bd72053ca1e4b4f36dfd31ba233c3a65 (patch) | |
| tree | 369999c8503fa875edfb12db66f23a9a42147944 /drivers/misc | |
| parent | misc: pci_endpoint_test: Prevent some integer overflows (diff) | |
| download | linux-dev-a2db2663bd72053ca1e4b4f36dfd31ba233c3a65.tar.xz linux-dev-a2db2663bd72053ca1e4b4f36dfd31ba233c3a65.zip | |
misc: pci_endpoint_test: Avoid triggering a BUG()
If you call ida_simple_remove(&pci_endpoint_test_ida, id) with a negative
"id" then it triggers an immediate BUG_ON(). Let's not allow that.
Fixes: 2c156ac71c6b ("misc: Add host side PCI driver for PCI test function device")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/pci_endpoint_test.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c index c0d323077ad0..d40a34f594c7 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -597,6 +597,8 @@ static void pci_endpoint_test_remove(struct pci_dev *pdev) if (sscanf(misc_device->name, DRV_MODULE_NAME ".%d", &id) != 1) return; + if (id < 0) + return; misc_deregister(&test->miscdev); ida_simple_remove(&pci_endpoint_test_ida, id); |