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bh=D7k1i6RzSTKWdk41U88+6APyLvkYmPUuGd1PK8eszHY=; b=e/Kw53wZs1KX+qL0ZaZkmOVF0fED9nn9VqFO0u7sW1GxXNQzNyJuSKD6mlNi/jNFKt+lMM ydcakDP/RHbI3RX+sw/u9xwzjElfr2gsHjkkab39aOJ07RpkpXRj730RRIiIh3qaK8lL9X Qqubrd7fqF15ngTJufME+GHdc5r+pYE= X-MC-Unique: 7Qi3tN2jOqGS7wfSpSZwaw-1 From: Kevin Wolf To: qemu-block@nongnu.org Cc: kwolf@redhat.com, richard.henderson@linaro.org, qemu-devel@nongnu.org Subject: [PULL 02/23] qdev-properties-system: Lock AioContext for blk_insert_bs() Date: Wed, 28 Jun 2023 16:15:05 +0200 Message-ID: <20230628141526.293104-3-kwolf@redhat.com> In-Reply-To: <20230628141526.293104-1-kwolf@redhat.com> References: <20230628141526.293104-1-kwolf@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.1 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=170.10.133.124; envelope-from=kwolf@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1687961789826100001 Content-Type: text/plain; charset="utf-8" blk_insert_bs() requires that callers hold the AioContext lock for the node that should be inserted. Take it. Signed-off-by: Kevin Wolf Message-ID: <20230605085711.21261-3-kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi Signed-off-by: Kevin Wolf --- hw/core/qdev-properties-system.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-sys= tem.c index d42493f630..6d5d43eda2 100644 --- a/hw/core/qdev-properties-system.c +++ b/hw/core/qdev-properties-system.c @@ -143,11 +143,15 @@ static void set_drive_helper(Object *obj, Visitor *v,= const char *name, * aware of iothreads require their BlockBackends to be in the= main * AioContext. */ - ctx =3D iothread ? bdrv_get_aio_context(bs) : qemu_get_aio_con= text(); - blk =3D blk_new(ctx, 0, BLK_PERM_ALL); + ctx =3D bdrv_get_aio_context(bs); + blk =3D blk_new(iothread ? ctx : qemu_get_aio_context(), + 0, BLK_PERM_ALL); blk_created =3D true; =20 + aio_context_acquire(ctx); ret =3D blk_insert_bs(blk, bs, errp); + aio_context_release(ctx); + if (ret < 0) { goto fail; } --=20 2.41.0