From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48720) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1edyVZ-0000Xa-Aw for qemu-devel@nongnu.org; Tue, 23 Jan 2018 08:21:02 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1edyVW-0005MY-75 for qemu-devel@nongnu.org; Tue, 23 Jan 2018 08:21:01 -0500 Received: from mail-qt0-x244.google.com ([2607:f8b0:400d:c0d::244]:46642) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1edyVW-0005MM-2y for qemu-devel@nongnu.org; Tue, 23 Jan 2018 08:20:58 -0500 Received: by mail-qt0-x244.google.com with SMTP id o35so1076813qtj.13 for ; Tue, 23 Jan 2018 05:20:58 -0800 (PST) Sender: =?UTF-8?Q?Philippe_Mathieu=2DDaud=C3=A9?= From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Tue, 23 Jan 2018 10:20:50 -0300 Message-Id: <20180123132051.24448-1-f4bug@amsat.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PATCH] sdhci: fix a NULL pointer dereference due to uninitialized AddresSpace object List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Alistair Francis , Peter Maydell Cc: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , qemu-devel@nongnu.org, "Edgar E . Iglesias" missed in 60765b6ceeb4. Thread 1 "qemu-system-aarch64" received signal SIGSEGV, Segmentation fault. address_space_init (as=0x0, root=0x55555726e410, name=name@entry=0x555555e3f0a7 "sdhci-dma") at memory.c:3050 3050 as->root = root; (gdb) bt #0 address_space_init (as=0x0, root=0x55555726e410, name=name@entry=0x555555e3f0a7 "sdhci-dma") at memory.c:3050 #1 0x0000555555af62c3 in sdhci_sysbus_realize (dev=, errp=0x7fff7f931150) at hw/sd/sdhci.c:1564 #2 0x00005555558b25e5 in zynqmp_sdhci_realize (dev=0x555557051520, errp=0x7fff7f931150) at hw/sd/zynqmp-sdhci.c:151 #3 0x0000555555a2e7f3 in device_set_realized (obj=0x555557051520, value=, errp=0x7fff7f931270) at hw/core/qdev.c:966 #4 0x0000555555ba3f74 in property_set_bool (obj=0x555557051520, v=, name=, opaque=0x555556e04a20, errp=0x7fff7f931270) at qom/object.c:1906 #5 0x0000555555ba51f4 in object_property_set (obj=obj@entry=0x555557051520, v=v@entry=0x5555576dbd60, name=name@entry=0x555555dd6306 "realized", errp=errp@entry=0x7fff7f931270) at qom/object.c:1102 Suggested-by: Peter Maydell Signed-off-by: Philippe Mathieu-Daudé --- include/hw/sd/sdhci.h | 1 + hw/sd/sdhci.c | 1 + 2 files changed, 2 insertions(+) diff --git a/include/hw/sd/sdhci.h b/include/hw/sd/sdhci.h index cb37182536..1cf70f8c23 100644 --- a/include/hw/sd/sdhci.h +++ b/include/hw/sd/sdhci.h @@ -41,6 +41,7 @@ typedef struct SDHCIState { /*< public >*/ SDBus sdbus; MemoryRegion iomem; + AddressSpace sysbus_dma_as; AddressSpace *dma_as; MemoryRegion *dma_mr; diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c index f9264d3be5..fac7fa5c72 100644 --- a/hw/sd/sdhci.c +++ b/hw/sd/sdhci.c @@ -1388,6 +1388,7 @@ static void sdhci_sysbus_realize(DeviceState *dev, Error ** errp) } if (s->dma_mr) { + s->dma_as = &s->sysbus_dma_as; address_space_init(s->dma_as, s->dma_mr, "sdhci-dma"); } else { /* use system_memory() if property "dma" not set */ -- 2.15.1