From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34031) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eoGsq-0002lE-1y for qemu-devel@nongnu.org; Tue, 20 Feb 2018 17:59:37 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eoGso-0005kL-QB for qemu-devel@nongnu.org; Tue, 20 Feb 2018 17:59:36 -0500 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:48642 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eoGso-0005js-LP for qemu-devel@nongnu.org; Tue, 20 Feb 2018 17:59:34 -0500 From: Bandan Das Date: Tue, 20 Feb 2018 17:59:01 -0500 Message-Id: <20180220225904.16129-3-bsd@redhat.com> In-Reply-To: <20180220225904.16129-1-bsd@redhat.com> References: <20180220225904.16129-1-bsd@redhat.com> Subject: [Qemu-devel] [PATCH v4 2/5] usb-mtp: print parent path in IN_IGNORED trace fn List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kraxel@redhat.com, eblake@redhat.com, peter.maydell@linaro.org Fix a possible null dereference when deleting a folder and its contents. An ignored event might be received for its contents after the parent folder is deleted which will return a null object. Signed-off-by: Bandan Das --- hw/usb/dev-mtp.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/hw/usb/dev-mtp.c b/hw/usb/dev-mtp.c index b55aa8205e..63f8f3b90b 100644 --- a/hw/usb/dev-mtp.c +++ b/hw/usb/dev-mtp.c @@ -540,9 +540,8 @@ static void inotify_watchfn(void *arg) break; case IN_IGNORED: - o = usb_mtp_object_lookup_name(parent, event->name, event->len); - trace_usb_mtp_inotify_event(s->dev.addr, o->path, - event->mask, "Obj ignored"); + trace_usb_mtp_inotify_event(s->dev.addr, parent->path, + event->mask, "Obj parent dir ignored"); break; default: -- 2.14.3