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linux/drivers/media
History
Andrey Konovalov 49c1e5f032 media: dib0700: fix invalid dvb_detach argument 
commit eb0c199422 upstream.

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 <andreyknvl@google.com>
Cc: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2017-11-21 09:23:21 +01:00
..
common [media] v4l2-tpg-core: drop SYCC, use higher precision 601 conversion matrix 2016-08-24 08:36:11 -03:00
dvb-core [media] get rid of a number of problems at the cross references 2016-09-22 10:00:23 -03:00
dvb-frontends dvb-frontends/cxd2841er: define symbol_rate_min/max in T/C fe-ops 2017-05-25 15:44:42 +02:00
firewire [media] dvb: modify core to implement interfaces/entities at MC new gen 2016-01-11 12:18:52 -02:00
i2c adv7604: Initialize drive strength to default when using DT 2017-11-15 15:53:10 +01:00
mmc [media] siano: register media controller earlier 2015-02-26 09:10:39 -03:00
pci bt8xx: fix memory leak 2017-11-08 10:08:37 +01:00
platform exynos4-is: fimc-is: Unmap region obtained by of_iomap() 2017-11-08 10:08:36 +01:00
radio [media] constify i2c_algorithm structures 2016-09-19 16:27:02 -03:00
rc media: imon: Fix null-ptr-deref in imon_probe 2017-11-21 09:23:21 +01:00
spi gs1662: drop kfree for memory allocated with devm_kzalloc 2017-01-26 08:24:45 +01:00
tuners xc2028: Fix use-after-free bug properly 2016-11-23 21:04:26 -02:00
usb media: dib0700: fix invalid dvb_detach argument 2017-11-21 09:23:21 +01:00
v4l2-core media: v4l2-compat-ioctl32: Fix timespec conversion 2017-09-27 14:39:24 +02:00
cec-edid.c [media] cec-edid: check for IEEE identifier 2016-08-22 14:04:51 -03:00
Kconfig [media] media Kconfig: improve the spi integration 2016-09-19 14:37:05 -03:00
Makefile [media] Add GS1662 driver, a video serializer 2016-09-19 14:36:24 -03:00
media-device.c media: Properly pass through media entity types in entity enumeration 2017-03-12 06:41:41 +01:00
media-devnode.c [media] media: fix media devnode ioctl/syscall and unregister race 2016-06-15 17:59:28 -03:00
media-entity.c media: entity: Fix stream count check 2017-07-12 15:01:02 +02:00