Max Kellermann c183d3584b [media] rc-main: clear rc_map.name in ir_free_table() ... rc_unregister_device() will first call ir_free_table(), and later device_del(); however, the latter causes a call to rc_dev_uevent(), which prints rc_map.name, which at this point has already bee freed. This fixes a use-after-free bug found with KASAN. As reported by Shuah: "I am seeing the following when I do rmmod on au0828 BUG: KASAN: use-after-free in string+0x170/0x1f0 at addr ffff8801bd513000 Read of size 1 by task rmmod/1831 CPU: 1 PID: 1831 Comm: rmmod Tainted: G W 4.9.0-rc5 #5 Hardware name: Hewlett-Packard HP ProBook 6475b/180F, BIOS 68TTU Ver. F.04 08/03/2012 ffff8801aea2f680 ffffffff81b37ad3 ffff8801fa403b80 ffff8801bd513000 ffff8801aea2f6a8 ffffffff8156c301 ffff8801aea2f738 ffff8801bd513000 ffff8801fa403b80 ffff8801aea2f728 ffffffff8156c59a ffff8801aea2f770 Call Trace: dump_stack+0x67/0x94 [<ffffffff8156c301>] kasan_object_err+0x21/0x70 [<ffffffff8156c59a>] kasan_report_error+0x1fa/0x4d0 [<ffffffffa116f05f>] ? au0828_exit+0x10/0x21 [au0828] [<ffffffff8156c8b3>] __asan_report_load1_noabort+0x43/0x50 [<ffffffff81b58b20>] ? string+0x170/0x1f0 [<ffffffff81b58b20>] string+0x170/0x1f0 [<ffffffff81b621c4>] vsnprintf+0x374/0x1c50 [<ffffffff81b61e50>] ? pointer+0xa80/0xa80 [<ffffffff8156b676>] ? save_stack+0x46/0xd0 [<ffffffff81566faa>] ? __kmalloc+0x14a/0x2a0 [<ffffffff81b3d70a>] ? kobject_get_path+0x9a/0x200 [<ffffffff81b408c2>] ? kobject_uevent_env+0x282/0xca0 [<ffffffff81b412eb>] ? kobject_uevent+0xb/0x10 [<ffffffff81f10104>] ? device_del+0x434/0x6d0 [<ffffffffa0fea717>] ? rc_unregister_device+0x177/0x240 [rc_core] [<ffffffffa116eeb0>] ? au0828_rc_unregister+0x60/0xb0 [au0828] The problem is fixed with this patch on Linux 4.9-rc4" Signed-off-by: Max Kellermann <max.kellermann@gmail.com> Tested-by: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>		2016-11-18 14:31:34 -02:00
..
cec	[media] cec: zero counters in cec_received_msg()	2016-11-16 15:49:01 -02:00
common	[media] tveeprom: print log messages using pr_foo()	2016-11-18 10:13:11 -02:00
dvb-core	[media] squash lines for simple wrapper functions	2016-11-16 13:28:40 -02:00
dvb-frontends	[media] dibx000_common: use pr_foo() instead of printk()	2016-11-18 10:01:56 -02:00
firewire	[media] firewire: don't break long lines	2016-10-21 10:06:00 -02:00
i2c	[media] tvp5150: get rid of KERN_CONT	2016-11-18 10:11:09 -02:00
mmc
pci	[media] saa7134: fix warm Medion 7134 EEPROM read	2016-11-18 14:04:53 -02:00
platform	[media] media: platform: ti-vpe: call of_node_put on non-null pointer	2016-11-18 14:23:33 -02:00
radio	[media] wl128x: use KERNEL_CONT where needed	2016-11-18 09:37:24 -02:00
rc	[media] rc-main: clear rc_map.name in ir_free_table()	2016-11-18 14:31:34 -02:00
spi	[media] gs1662: drop kfree for memory allocated with devm_kzalloc	2016-10-24 17:59:08 -02:00
tuners	[media] tuners: don't break long lines	2016-10-21 10:08:13 -02:00
usb	[media] dvb-usb-cxusb: Geniatech T230 - resync TS FIFO after lock	2016-11-18 13:46:28 -02:00
v4l2-core	[media] tuner-core: use pr_foo, instead of internal printk macros	2016-11-18 10:04:28 -02:00
cec-edid.c
Kconfig	[media] cec: move the CEC framework out of staging and to media	2016-11-16 15:40:20 -02:00
Makefile	[media] cec: move the CEC framework out of staging and to media	2016-11-16 15:40:20 -02:00
media-device.c
media-devnode.c
media-entity.c