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linux/drivers/usb/misc
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Wei Yongjun 407ef1db40 usb: ftdi-elan: fix memory leak on device disconnect 
[ Upstream commit 1646566b5e ]

'ftdi' is alloced when probe device, but not free on device disconnect,
this cause a memory leak as follows:

unreferenced object 0xffff88800d584000 (size 8400):
  comm "kworker/0:2", pid 3809, jiffies 4295453055 (age 13.784s)
  hex dump (first 32 bytes):
    00 40 58 0d 80 88 ff ff 00 40 58 0d 80 88 ff ff  .@X......@X.....
    00 00 00 00 00 00 00 00 00 00 00 00 ad 4e ad de  .............N..
  backtrace:
    [<000000000d47f947>] kmalloc_order_trace+0x19/0x110 mm/slab_common.c:960
    [<000000008548ac68>] ftdi_elan_probe+0x8c/0x880 drivers/usb/misc/ftdi-elan.c:2647
    [<000000007f73e422>] usb_probe_interface+0x31b/0x800 drivers/usb/core/driver.c:396
    [<00000000fe8d07fc>] really_probe+0x299/0xc30 drivers/base/dd.c:517
    [<0000000005da7d32>] __driver_probe_device+0x357/0x500 drivers/base/dd.c:751
    [<000000003c2c9579>] driver_probe_device+0x4e/0x140 drivers/base/dd.c:781

Fix it by freeing 'ftdi' after nobody use it.

Fixes: a5c66e4b24 ("USB: ftdi-elan: client driver for ELAN Uxxx adapters")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20211217083428.2441-1-weiyongjun1@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-01-27 10:53:58 +01:00
..
sisusbvga USB: sisusbvga: Make console support depend on BROKEN 2020-12-21 13:30:08 +01:00
adutux.c USB: adutux: fix debugging 2020-09-17 18:52:40 +02:00
apple-mfi-fastcharge.c USB: apple-mfi-fastcharge: fix reference leak in apple_mfi_fc_set_property 2020-11-06 12:06:58 +01:00
appledisplay.c usb: appledisplay: use module_usb_driver to simplify the code 2020-09-22 10:37:19 +02:00
chaoskey.c USB: chaoskey: fix error case of a timeout 2019-11-11 14:29:39 +01:00
cypress_cy7c63.c USB: cypress_cy7c63: convert to use dev_groups 2019-08-09 07:55:44 +02:00
cytherm.c USB: cytherm: convert to use dev_groups 2019-08-09 07:55:44 +02:00
ehset.c USB: ch9: add "USB_" prefix in front of TEST defines 2020-06-24 15:01:24 +02:00
emi26.c USB: misc: Remove redundant license text 2017-11-04 11:55:38 +01:00
emi62.c USB: misc: Remove redundant license text 2017-11-04 11:55:38 +01:00
ezusb.c USB: misc: Remove redundant license text 2017-11-04 11:55:38 +01:00
ftdi-elan.c usb: ftdi-elan: fix memory leak on device disconnect 2022-01-27 10:53:58 +01:00
idmouse.c USB: idmouse: fix interface sanity checks 2019-12-10 13:11:22 +01:00
iowarrior.c USB: iowarrior: fix control-message timeouts 2021-11-18 14:03:51 +01:00
isight_firmware.c USB: misc: Remove redundant license text 2017-11-04 11:55:38 +01:00
Kconfig USB: Replace HTTP links with HTTPS ones 2020-07-21 13:41:57 +02:00
ldusb.c usb: misc: ldusb: Demote obvious misuse of kerneldoc to standard comment blocks 2020-07-09 16:47:00 +02:00
legousbtower.c USB: legotower: fix logical error in recent commit 2020-12-21 13:30:06 +01:00
lvstest.c USB: lvtest: return proper error code in probe 2020-08-18 11:55:23 +02:00
Makefile USB: Add driver to control USB fast charge for iOS devices 2020-02-12 11:01:55 -08:00
trancevibrator.c USB: trancevibrator: fix control-request direction 2021-06-03 09:00:34 +02:00
usb_u132.h USB: misc: Use the correct style for SPDX License Identifier 2020-04-16 14:32:47 +02:00
usb251xb.c usb: usb251xb: fix regulator probe and error handling 2020-03-04 10:56:26 +01:00
usb3503.c usb/misc: usb3503: Use pm_ptr() macro 2020-09-04 16:53:57 +02:00
usb4604.c usb/misc: usb4604: Use pm_ptr() macro 2020-09-04 16:53:51 +02:00
usblcd.c USB: usblcd: Remove the superfluous break 2020-08-28 09:48:33 +02:00
usbsevseg.c USB: usbsevseg: convert to use dev_groups 2019-08-09 07:55:45 +02:00
usbtest.c usb: usbtest: reduce stack usage in test_queue 2020-07-21 13:41:57 +02:00
uss720.c misc/uss720: fix memory leak in uss720_probe 2021-06-03 09:00:32 +02:00
yurex.c USB: yurex: fix control-URB timeout handling 2021-01-12 20:18:20 +01:00