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1646566b5e
linux/drivers/usb/misc
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Wei Yongjun 1646566b5e usb: ftdi-elan: fix memory leak on device disconnect 
'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>
2021-12-17 16:54:12 +01:00
..
sisusbvga USB / Thunderbolt patches for 5.11-rc1 2020-12-15 13:54:56 -08:00
adutux.c usb: misc: adutux: use swap() 2021-08-05 12:31:34 +02:00
apple-mfi-fastcharge.c USB: apple-mfi-fastcharge: Fix use after free in probe 2020-12-04 16:48:07 +01:00
appledisplay.c usb: appledisplay: use module_usb_driver to simplify the code 2020-09-22 10:37:19 +02:00
brcmstb-usb-pinmap.c usb: misc: brcmstb-usb-pinmap: add IRQ check 2021-08-13 13:05:50 +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 Revert "usb: misc: ehset: Workaround for "special" hubs" 2021-10-07 12:48:54 +02:00
emi26.c
emi62.c
ezusb.c usb: misc: ezusb: update to use usb_control_msg_send() 2021-03-28 13:41:27 +02:00
ftdi-elan.c usb: ftdi-elan: fix memory leak on device disconnect 2021-12-17 16:54:12 +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 2021-10-26 19:12:28 +02:00
isight_firmware.c
Kconfig Revert "USB: misc: Add onboard_usb_hub driver" 2021-06-18 08:39:24 +02:00
ldusb.c module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
legousbtower.c USB: legotower: fix logical error in recent commit 2020-12-08 19:55:09 +01:00
lvstest.c USB: lvtest: return proper error code in probe 2020-08-18 11:55:23 +02:00
Makefile Revert "USB: misc: Add onboard_usb_hub driver" 2021-06-18 08:39:24 +02:00
trancevibrator.c USB: trancevibrator: fix control-request direction 2021-05-21 20:10:43 +02:00
usb251xb.c usb: usb251xb: Use of_device_get_match_data() 2021-01-26 12:17:32 -06:00
usb3503.c usb: misc: usb3503: Fix logic in usb3503_init() 2021-02-11 13:52:04 +01:00
usb4604.c usb/misc: usb4604: Use pm_ptr() macro 2020-09-04 16:53:51 +02:00
usb_u132.h USB: misc: Use the correct style for SPDX License Identifier 2020-04-16 14:32:47 +02:00
usblcd.c USB: usblcd: Remove the superfluous break 2020-08-28 09:48:33 +02:00
usbsevseg.c usb: misc: usbsevseg: update to use usb_control_msg_send() 2021-03-28 13:41:27 +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 2021-05-21 14:25:53 +02:00
yurex.c USB: yurex: fix control-URB timeout handling 2020-12-28 15:47:06 +01:00