| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 026/131] usb: gadget: composite: fix dereference after null check coverify warning | Date | Mon, 1 Apr 2019 19:01:36 +0200 |
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4.4-stable review patch. If anyone has any objections, please let me know.
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From: Peter Chen <peter.chen@nxp.com>
commit c526c62d565ea5a5bba9433f28756079734f430d upstream.
cdev->config is checked for null pointer at above code, so cdev->config might be null, fix it by adding null pointer check.
Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/usb/gadget/composite.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1819,6 +1819,8 @@ unknown: break; case USB_RECIP_ENDPOINT: + if (!cdev->config) + break; endp = ((w_index & 0x80) >> 3) | (w_index & 0x0f); list_for_each_entry(f, &cdev->config->functions, list) { if (test_bit(endp, f->endpoints))
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