This is a note to let you know that I've just added the patch titled
NFC: fix device-allocation error return
to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: nfc-fix-device-allocation-error-return.patch and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From c45e3e4c5b134b081e8af362109905427967eb19 Mon Sep 17 00:00:00 2001
From: Johan Hovold johan@kernel.org Date: Sun, 9 Jul 2017 13:08:58 +0200 Subject: NFC: fix device-allocation error return
From: Johan Hovold johan@kernel.org
commit c45e3e4c5b134b081e8af362109905427967eb19 upstream.
A recent change fixing NFC device allocation itself introduced an error-handling bug by returning an error pointer in case device-id allocation failed. This is clearly broken as the callers still expected NULL to be returned on errors as detected by Dan's static checker.
Fix this up by returning NULL in the event that we've run out of memory when allocating a new device id.
Note that the offending commit is marked for stable (3.8) so this fix needs to be backported along with it.
Fixes: 20777bc57c34 ("NFC: fix broken device allocation") Reported-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Johan Hovold johan@kernel.org Signed-off-by: Samuel Ortiz sameo@linux.intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- net/nfc/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/nfc/core.c +++ b/net/nfc/core.c @@ -1093,7 +1093,7 @@ struct nfc_dev *nfc_allocate_device(stru err_free_dev: kfree(dev);
- return ERR_PTR(rc); + return NULL; } EXPORT_SYMBOL(nfc_allocate_device);
Patches currently in stable-queue which might be from johan@kernel.org are
queue-4.4/clk-ti-dra7-atl-clock-fix-child-node-lookups.patch queue-4.4/nfc-fix-device-allocation-error-return.patch