File 0045-hw-usb-fix-mistaken-de-initializati.patch of Package qemu

Overview Repositories Revisions Requests Users Attributes Meta

File 0045-hw-usb-fix-mistaken-de-initializati.patch of Package qemu (Revision 4db8d2fe1615b6ef19cb7f1a2ce3936d)

Currently displaying revision 4db8d2fe1615b6ef19cb7f1a2ce3936d , Show latest

From: Gerd Hoffmann <kraxel@redhat.com>
Date: Wed, 9 Jan 2019 11:07:15 -0700
Subject: hw/usb: fix mistaken de-initialization of CCID state
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Daniel P. Berrangé <berrange@redhat.com>

In previous commit:

commit 7dea29e4af17fc1d27478de9f8ea38144deac54a
  Author: Li Qiang <liq3ea@gmail.com>
  Date:   Fri Oct 19 03:50:36 2018 -0700

hw: ccid-card-emulated: cleanup resource when realize in error path

The emulated_realize method was changed so that it jumps to a cleanup
label to de-initialize state upon error. This change failed to ensure
the success path exited the method before this point though. So the
mutexes are always destroyed even in normal operation. The result is
as crashtastic as expected:

$ qemu-system-x86_64 -usb -device usb-ccid,id=ccid0 -device ccid-card-emulated,backend=nss-emulated,id=smartcard0,bus=ccid0.0
qemu-system-x86_64: util/qemu-thread-posix.c:64: qemu_mutex_lock_impl: Assertion `mutex->initialized' failed.
Aborted (core dumped)

Fixes: 7dea29e4af1
Reported-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20181221134115.27973-1-berrange@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit 3fd2092fd11b9e4220a08eca0663cc59178a6c3f)
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 hw/usb/ccid-card-emulated.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hw/usb/ccid-card-emulated.c b/hw/usb/ccid-card-emulated.c
index 25976ed84f..e0457d305b 100644
--- a/hw/usb/ccid-card-emulated.c
+++ b/hw/usb/ccid-card-emulated.c
@@ -549,6 +549,8 @@ static void emulated_realize(CCIDCardState *base, Error **errp)
     qemu_thread_create(&card->apdu_thread_id, "ccid/apdu", handle_apdu_thread,
                        card, QEMU_THREAD_JOINABLE);
 
+    return;
+
 out2:
     clean_event_notifier(card);
 out1:

Places

File 0045-hw-usb-fix-mistaken-de-initializati.patch of Package qemu (Revision 4db8d2fe1615b6ef19cb7f1a2ce3936d)

Places