From patchwork Thu Nov 2 14:38:21 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Konovalov X-Patchwork-Id: 45291 Received: from vger.kernel.org ([209.132.180.67]) by www.linuxtv.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eAGde-0000NG-C8; Thu, 02 Nov 2017 14:38:34 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933488AbdKBOib (ORCPT + 1 other); Thu, 2 Nov 2017 10:38:31 -0400 Received: from mail-wm0-f65.google.com ([74.125.82.65]:47112 "EHLO mail-wm0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933364AbdKBOi3 (ORCPT ); Thu, 2 Nov 2017 10:38:29 -0400 Received: by mail-wm0-f65.google.com with SMTP id r196so11590903wmf.2 for ; Thu, 02 Nov 2017 07:38:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=14Gl9lNTLKY1w41dVJY4NI8rJf4znZOc4CYq3QvMeaU=; b=Eam/p4FrlmPyzEpZFGhDg+w0hLqKGopvt2yzU91Tir/PmlqsXpqtt7SJsVIWSe8vP8 PLCOrOtC581azI0y2eADw+vLsVZq4ygR8uBg+sOSXyHE5CYRtjIktgrAOU2p0IYAGz60 8OoBTM6dl4tw0NqaPaZjEq6lGm8UNldvOwGaoaNKOTtLgq6IsvzlRRLg2CbS9HCD199S jsWzRp/ZxTS54hyNc2RCO4ZjuR62HJisijgUt2woIJfLjrBjImfZQYwvN/3MK7f+gKSN gF2WPV5sN+cvZwAOnoiOEQPy4E5mPziD18FNVacaR4GjS0GoM8dD/FwydQ07BJoCuvkd j0NQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=14Gl9lNTLKY1w41dVJY4NI8rJf4znZOc4CYq3QvMeaU=; b=j8RprIoAFucha6Vs/bKr6mhmAxI6ZW/69z19++Lv1J62Nl5QgH2HM6OTObao2EnUvV 4dgPMO2PDTN3cZogUmhY3XcqJEX4ZjXut0r9J8mI0IalY0UoUBIhtBe4mWpEoNdnDpzz r/oR51bflNp0bttksZSxfKLgpPVxjWxs0tGxZOib1aJxhdtB/c+z7CpDJ9bLmDkEYS1k 5/2nuqgfBb2QH/72yWpfpsYO17CZYyUDWZ7FA11gF0VbY5JYp03UExBUtgDAQ2pKaDzE hfrea5pTsAYR3NS6NgPvzkOekZXBz81R3DelYJpz0ALdUHVYDXiQraGuKWKGSOcG3rA3 4EKw== X-Gm-Message-State: AMCzsaUIJpqxhMrf5atwItXcYXbO6+Fcw1KseR6PB4TJPcl8KJJxjXty ceIYvfVprbyJPHpHByB/+os3bw== X-Google-Smtp-Source: ABhQp+RR0Dv4LP9WxPoFkOQfo/6+dUa0llYUgKzyadEiWrh4bm17s75sidSSzychFGoLFYowlmakqw== X-Received: by 10.28.54.154 with SMTP id y26mr2034392wmh.15.1509633507981; Thu, 02 Nov 2017 07:38:27 -0700 (PDT) Received: from andreyknvl0.muc.corp.google.com ([100.105.28.157]) by smtp.gmail.com with ESMTPSA id 195sm4778991wmj.3.2017.11.02.07.38.27 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 02 Nov 2017 07:38:27 -0700 (PDT) Received: by andreyknvl0.muc.corp.google.com (Postfix, from userid 206546) id 3679E180ADF; Thu, 2 Nov 2017 15:38:26 +0100 (CET) From: Andrey Konovalov To: Mauro Carvalho Chehab , Piotr Oleszczyk , Andrew Morton , Hans Verkuil , Sean Young , Alexey Dobriyan , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Dmitry Vyukov , Kostya Serebryany , Andrey Konovalov Subject: [PATCH] media: dib0700: fix invalid dvb_detach argument Date: Thu, 2 Nov 2017 15:38:21 +0100 Message-Id: <7d99503f8ba3308371c4da948b53c3ac0e53586d.1509633491.git.andreyknvl@google.com> X-Mailer: git-send-email 2.15.0.403.gc27cc4dac6-goog Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org dvb_detach(arg) calls symbol_put_addr(arg), where arg should be a pointer to a function. Right now a pointer to state->dib7000p_ops is passed to dvb_detach(), which causes a BUG() in symbol_put_addr() as discovered by syzkaller. Pass state->dib7000p_ops.set_wbd_ref instead. ------------[ cut here ]------------ kernel BUG at kernel/module.c:1081! invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 1151 Comm: kworker/1:1 Tainted: G W 4.14.0-rc1-42251-gebb2c2437d80 #224 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Workqueue: usb_hub_wq hub_event task: ffff88006a336300 task.stack: ffff88006a7c8000 RIP: 0010:symbol_put_addr+0x54/0x60 kernel/module.c:1083 RSP: 0018:ffff88006a7ce210 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff880062a8d190 RCX: 0000000000000000 RDX: dffffc0000000020 RSI: ffffffff85876d60 RDI: ffff880062a8d190 RBP: ffff88006a7ce218 R08: 1ffff1000d4f9c12 R09: 1ffff1000d4f9ae4 R10: 1ffff1000d4f9bed R11: 0000000000000000 R12: ffff880062a8d180 R13: 00000000ffffffed R14: ffff880062a8d190 R15: ffff88006947c000 FS: 0000000000000000(0000) GS:ffff88006c900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6416532000 CR3: 00000000632f5000 CR4: 00000000000006e0 Call Trace: stk7070p_frontend_attach+0x515/0x610 drivers/media/usb/dvb-usb/dib0700_devices.c:1013 dvb_usb_adapter_frontend_init+0x32b/0x660 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:286 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:86 dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:162 dvb_usb_device_init+0xf70/0x17f0 drivers/media/usb/dvb-usb/dvb-usb-init.c:277 dib0700_probe+0x171/0x5a0 drivers/media/usb/dvb-usb/dib0700_core.c:886 usb_probe_interface+0x35d/0x8e0 drivers/usb/core/driver.c:361 really_probe drivers/base/dd.c:413 driver_probe_device+0x610/0xa00 drivers/base/dd.c:557 __device_attach_driver+0x230/0x290 drivers/base/dd.c:653 bus_for_each_drv+0x161/0x210 drivers/base/bus.c:463 __device_attach+0x26e/0x3d0 drivers/base/dd.c:710 device_initial_probe+0x1f/0x30 drivers/base/dd.c:757 bus_probe_device+0x1eb/0x290 drivers/base/bus.c:523 device_add+0xd0b/0x1660 drivers/base/core.c:1835 usb_set_configuration+0x104e/0x1870 drivers/usb/core/message.c:1932 generic_probe+0x73/0xe0 drivers/usb/core/generic.c:174 usb_probe_device+0xaf/0xe0 drivers/usb/core/driver.c:266 really_probe drivers/base/dd.c:413 driver_probe_device+0x610/0xa00 drivers/base/dd.c:557 __device_attach_driver+0x230/0x290 drivers/base/dd.c:653 bus_for_each_drv+0x161/0x210 drivers/base/bus.c:463 __device_attach+0x26e/0x3d0 drivers/base/dd.c:710 device_initial_probe+0x1f/0x30 drivers/base/dd.c:757 bus_probe_device+0x1eb/0x290 drivers/base/bus.c:523 device_add+0xd0b/0x1660 drivers/base/core.c:1835 usb_new_device+0x7b8/0x1020 drivers/usb/core/hub.c:2457 hub_port_connect drivers/usb/core/hub.c:4903 hub_port_connect_change drivers/usb/core/hub.c:5009 port_event drivers/usb/core/hub.c:5115 hub_event+0x194d/0x3740 drivers/usb/core/hub.c:5195 process_one_work+0xc7f/0x1db0 kernel/workqueue.c:2119 worker_thread+0x221/0x1850 kernel/workqueue.c:2253 kthread+0x3a1/0x470 kernel/kthread.c:231 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431 Code: ff ff 48 85 c0 74 24 48 89 c7 e8 48 ea ff ff bf 01 00 00 00 e8 de 20 e3 ff 65 8b 05 b7 2f c2 7e 85 c0 75 c9 e8 f9 0b c1 ff eb c2 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 b8 00 00 RIP: symbol_put_addr+0x54/0x60 RSP: ffff88006a7ce210 ---[ end trace b75b357739e7e116 ]--- Signed-off-by: Andrey Konovalov --- drivers/media/usb/dvb-usb/dib0700_devices.c | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/drivers/media/usb/dvb-usb/dib0700_devices.c b/drivers/media/usb/dvb-usb/dib0700_devices.c index 6020170fe99a..92098c1b78e5 100644 --- a/drivers/media/usb/dvb-usb/dib0700_devices.c +++ b/drivers/media/usb/dvb-usb/dib0700_devices.c @@ -291,7 +291,7 @@ static int stk7700P2_frontend_attach(struct dvb_usb_adapter *adap) stk7700d_dib7000p_mt2266_config) != 0) { err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n", __func__); - dvb_detach(&state->dib7000p_ops); + dvb_detach(state->dib7000p_ops.set_wbd_ref); return -ENODEV; } } @@ -325,7 +325,7 @@ static int stk7700d_frontend_attach(struct dvb_usb_adapter *adap) stk7700d_dib7000p_mt2266_config) != 0) { err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n", __func__); - dvb_detach(&state->dib7000p_ops); + dvb_detach(state->dib7000p_ops.set_wbd_ref); return -ENODEV; } } @@ -478,7 +478,7 @@ static int stk7700ph_frontend_attach(struct dvb_usb_adapter *adap) &stk7700ph_dib7700_xc3028_config) != 0) { err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n", __func__); - dvb_detach(&state->dib7000p_ops); + dvb_detach(state->dib7000p_ops.set_wbd_ref); return -ENODEV; } @@ -1010,7 +1010,7 @@ static int stk7070p_frontend_attach(struct dvb_usb_adapter *adap) &dib7070p_dib7000p_config) != 0) { err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n", __func__); - dvb_detach(&state->dib7000p_ops); + dvb_detach(state->dib7000p_ops.set_wbd_ref); return -ENODEV; } @@ -1068,7 +1068,7 @@ static int stk7770p_frontend_attach(struct dvb_usb_adapter *adap) &dib7770p_dib7000p_config) != 0) { err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n", __func__); - dvb_detach(&state->dib7000p_ops); + dvb_detach(state->dib7000p_ops.set_wbd_ref); return -ENODEV; } @@ -3056,7 +3056,7 @@ static int nim7090_frontend_attach(struct dvb_usb_adapter *adap) if (state->dib7000p_ops.i2c_enumeration(&adap->dev->i2c_adap, 1, 0x10, &nim7090_dib7000p_config) != 0) { err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n", __func__); - dvb_detach(&state->dib7000p_ops); + dvb_detach(state->dib7000p_ops.set_wbd_ref); return -ENODEV; } adap->fe_adap[0].fe = state->dib7000p_ops.init(&adap->dev->i2c_adap, 0x80, &nim7090_dib7000p_config); @@ -3109,7 +3109,7 @@ static int tfe7090pvr_frontend0_attach(struct dvb_usb_adapter *adap) /* initialize IC 0 */ if (state->dib7000p_ops.i2c_enumeration(&adap->dev->i2c_adap, 1, 0x20, &tfe7090pvr_dib7000p_config[0]) != 0) { err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n", __func__); - dvb_detach(&state->dib7000p_ops); + dvb_detach(state->dib7000p_ops.set_wbd_ref); return -ENODEV; } @@ -3139,7 +3139,7 @@ static int tfe7090pvr_frontend1_attach(struct dvb_usb_adapter *adap) i2c = state->dib7000p_ops.get_i2c_master(adap->dev->adapter[0].fe_adap[0].fe, DIBX000_I2C_INTERFACE_GPIO_6_7, 1); if (state->dib7000p_ops.i2c_enumeration(i2c, 1, 0x10, &tfe7090pvr_dib7000p_config[1]) != 0) { err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n", __func__); - dvb_detach(&state->dib7000p_ops); + dvb_detach(state->dib7000p_ops.set_wbd_ref); return -ENODEV; } @@ -3214,7 +3214,7 @@ static int tfe7790p_frontend_attach(struct dvb_usb_adapter *adap) 1, 0x10, &tfe7790p_dib7000p_config) != 0) { err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n", __func__); - dvb_detach(&state->dib7000p_ops); + dvb_detach(state->dib7000p_ops.set_wbd_ref); return -ENODEV; } adap->fe_adap[0].fe = state->dib7000p_ops.init(&adap->dev->i2c_adap, @@ -3309,7 +3309,7 @@ static int stk7070pd_frontend_attach0(struct dvb_usb_adapter *adap) stk7070pd_dib7000p_config) != 0) { err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n", __func__); - dvb_detach(&state->dib7000p_ops); + dvb_detach(state->dib7000p_ops.set_wbd_ref); return -ENODEV; } @@ -3384,7 +3384,7 @@ static int novatd_frontend_attach(struct dvb_usb_adapter *adap) stk7070pd_dib7000p_config) != 0) { err("%s: state->dib7000p_ops.i2c_enumeration failed. Cannot continue\n", __func__); - dvb_detach(&state->dib7000p_ops); + dvb_detach(state->dib7000p_ops.set_wbd_ref); return -ENODEV; } } @@ -3620,7 +3620,7 @@ static int pctv340e_frontend_attach(struct dvb_usb_adapter *adap) if (state->dib7000p_ops.dib7000pc_detection(&adap->dev->i2c_adap) == 0) { /* Demodulator not found for some reason? */ - dvb_detach(&state->dib7000p_ops); + dvb_detach(state->dib7000p_ops.set_wbd_ref); return -ENODEV; }