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b=BZEFSUH65BrI0Q/zvg9BFSGLYD5dCqvI/RYa2AQEs6zR9w1SZo8hrhd7L+f9ArxZ/lpxGt k8L5kEr0aTzRwYt90JKFzox/NM1fz8XMN/zokV+sFAQTEeLGWDfIGJpsTVT531/B8Y51aH 62Pb6q3+5AzR9Is83zayVco8Wj/OdRg= X-MC-Unique: mK4VejiAN4eafexFkVaezQ-1 From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= To: qemu-devel@nongnu.org Subject: [PATCH] chardev: don't abort on attempt to add duplicated chardev Date: Mon, 6 Jul 2020 22:21:56 +0400 Message-Id: <20200706182156.334207-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=marcandre.lureau@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=205.139.110.120; envelope-from=marcandre.lureau@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/06 01:22:37 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: eric.auger@redhat.com, armbru@redhat.com, =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) This is a regression from commit d2623129a7dec1d3041ad1221dda1ca49c667532 ("qom: Drop parameter @errp of object_property_add() & friends"). (qemu) chardev-add id=3Dnull,backend=3Dnull (qemu) chardev-add id=3Dnull,backend=3Dnull Unexpected error in object_property_try_add() at /home/elmarco/src/qemu/qom= /object.c:1166: attempt to add duplicate property 'null' to object (type 'container') That case is currently not covered in the test suite, but will be with the queued patch "char: fix use-after-free with dup chardev & reconnect". Signed-off-by: Marc-Andr=C3=A9 Lureau Reviewed-by: Markus Armbruster --- chardev/char.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/chardev/char.c b/chardev/char.c index e3051295ac3..876e41bb592 100644 --- a/chardev/char.c +++ b/chardev/char.c @@ -998,7 +998,10 @@ static Chardev *chardev_new(const char *id, const char= *typename, } =20 if (id) { - object_property_add_child(get_chardevs_root(), id, obj); + object_property_try_add_child(get_chardevs_root(), id, obj, &local= _err); + if (local_err) { + goto end; + } object_unref(obj); } =20 --=20 2.27.0.90.geebb51ba8c