From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48004) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dsMl2-0002tG-LM for qemu-devel@nongnu.org; Thu, 14 Sep 2017 01:32:13 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dsMkz-0006Po-RD for qemu-devel@nongnu.org; Thu, 14 Sep 2017 01:32:12 -0400 Received: from mx1.redhat.com ([209.132.183.28]:53938) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dsMkz-0006LM-M2 for qemu-devel@nongnu.org; Thu, 14 Sep 2017 01:32:09 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5565485542 for ; Thu, 14 Sep 2017 05:32:08 +0000 (UTC) From: Bandan Das Date: Thu, 14 Sep 2017 01:31:45 -0400 Message-Id: <20170914053148.2512-3-bsd@redhat.com> In-Reply-To: <20170914053148.2512-1-bsd@redhat.com> References: <20170914053148.2512-1-bsd@redhat.com> Subject: [Qemu-devel] [PATCH 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 From: Bandan Das 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 b55aa82..63f8f3b 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: -- 2.9.4