Patch "rtlwifi: rtl_pci_probe: Fix fail path of _rtl_pci_find_adapter" has been added to the 4.13-stable tree

This is a note to let you know that I've just added the patch titled

rtlwifi: rtl_pci_probe: Fix fail path of _rtl_pci_find_adapter

to the 4.13-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
rtlwifi-rtl_pci_probe-fix-fail-path-of-_rtl_pci_find_adapter.patch
and it can be found in the queue-4.13 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Malcolm Priestley <[email protected]>
Date: Sun, 30 Jul 2017 09:02:19 +0100
Subject: rtlwifi: rtl_pci_probe: Fix fail path of _rtl_pci_find_adapter

From: Malcolm Priestley <[email protected]>

commit fc81bab5eeb103711925d7510157cf5cd2b153f4 upstream.

_rtl_pci_find_adapter fail path will jump to label fail3 for unsupported adapter types.

However, on course for fail3 there will be call rtl_deinit_core before rtl_init_core.

For the inclusion of checking pci_iounmap this fail can be moved to fail2.

Fixes

[    4.492963] BUG: unable to handle kernel NULL pointer dereference at           (null)
[    4.493067] IP: rtl_deinit_core+0x31/0x90 [rtlwifi]

---
 drivers/net/wireless/realtek/rtlwifi/pci.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

@@ -2257,7 +2257,7 @@ int rtl_pci_probe(struct pci_dev *pdev,
 	/* find adapter */
 	if (!_rtl_pci_find_adapter(pdev, hw)) {
 		err = -ENODEV;
-		goto fail3;
+		goto fail2;
 	}
 
 	/* Init IO handler */

@@ -2318,10 +2318,10 @@ fail3:
 	pci_set_drvdata(pdev, NULL);
 	rtl_deinit_core(hw);
 
+fail2:
 	if (rtlpriv->io.pci_mem_start != 0)
 		pci_iounmap(pdev, (void __iomem *)rtlpriv->io.pci_mem_start);
 
-fail2:
 	pci_release_regions(pdev);
 	complete(&rtlpriv->firmware_loading_complete);
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.13/rtlwifi-rtl_pci_probe-fix-fail-path-of-_rtl_pci_find_adapter.patch