BUG: memory leak
unreferenced object 0xffff888055046e00 (size 256):
comm "kworker/2:9", pid 2570, jiffies
4294942129 (age 1095.500s)
hex dump (first 32 bytes):
00 70 04 55 80 88 ff ff 18 bb 5a 81 ff ff ff ff .p.U......Z.....
f5 96 78 81 ff ff ff ff 37 de 8e 81 ff ff ff ff ..x.....7.......
backtrace:
[<
00000000d121dccf>] kmemleak_alloc_recursive
include/linux/kmemleak.h:43 [inline]
[<
00000000d121dccf>] slab_post_alloc_hook mm/slab.h:586 [inline]
[<
00000000d121dccf>] slab_alloc_node mm/slub.c:2786 [inline]
[<
00000000d121dccf>] slab_alloc mm/slub.c:2794 [inline]
[<
00000000d121dccf>] kmem_cache_alloc_trace+0x15e/0x2d0 mm/slub.c:2811
[<
000000005c3c3381>] kmalloc include/linux/slab.h:555 [inline]
[<
000000005c3c3381>] usbtest_probe+0x286/0x19d0
drivers/usb/misc/usbtest.c:2790
[<
000000001cec6910>] usb_probe_interface+0x2bd/0x870
drivers/usb/core/driver.c:361
[<
000000007806c118>] really_probe+0x48d/0x8f0 drivers/base/dd.c:551
[<
00000000a3308c3e>] driver_probe_device+0xfc/0x2a0 drivers/base/dd.c:724
[<
000000003ef66004>] __device_attach_driver+0x1b6/0x240
drivers/base/dd.c:831
[<
00000000eee53e97>] bus_for_each_drv+0x14e/0x1e0 drivers/base/bus.c:431
[<
00000000bb0648d0>] __device_attach+0x1f9/0x350 drivers/base/dd.c:897
[<
00000000838b324a>] device_initial_probe+0x1a/0x20 drivers/base/dd.c:944
[<
0000000030d501c1>] bus_probe_device+0x1e1/0x280 drivers/base/bus.c:491
[<
000000005bd7adef>] device_add+0x131d/0x1c40 drivers/base/core.c:2504
[<
00000000a0937814>] usb_set_configuration+0xe84/0x1ab0
drivers/usb/core/message.c:2030
[<
00000000e3934741>] generic_probe+0x6a/0xe0 drivers/usb/core/generic.c:210
[<
0000000098ade0f1>] usb_probe_device+0x90/0xd0
drivers/usb/core/driver.c:266
[<
000000007806c118>] really_probe+0x48d/0x8f0 drivers/base/dd.c:551
[<
00000000a3308c3e>] driver_probe_device+0xfc/0x2a0 drivers/base/dd.c:724
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Kyungtae Kim <kt0755@gmail.com>
Signed-off-by: Zqiang <qiang.zhang@windriver.com>
Link: https://lore.kernel.org/r/20200612035210.20494-1-qiang.zhang@windriver.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>