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| author | Wei Yongjun <[email protected]> | 2021-12-17 08:34:28 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2021-12-17 15:54:12 +0000 |
| commit | 1646566b5e0c556f779180a8514e521ac735de1e (patch) | |
| tree | 59e5664f0e9491029e39122c1ee4859648d8f8ad /drivers/usb/cdns3/cdns3-plat.c | |
| parent | usb: hub: Add delay for SuperSpeed hub resume to let links transit to U0 (diff) | |
| download | kernel-1646566b5e0c556f779180a8514e521ac735de1e.tar.gz kernel-1646566b5e0c556f779180a8514e521ac735de1e.zip | |
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: a5c66e4b2418 ("USB: ftdi-elan: client driver for ELAN Uxxx adapters")
Reported-by: Hulk Robot <[email protected]>
Signed-off-by: Wei Yongjun <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'drivers/usb/cdns3/cdns3-plat.c')
0 files changed, 0 insertions, 0 deletions