4.4-stable review patch. If anyone has any objections, please let me know.
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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);