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SubjectWARNING: ODEBUG bug in vudc_probe

I am getting the following error while booting kernel on upstream
commit a49a9dcce802b3651013f659813df1361d306172, config is attached.
Seems there is some kind of resource leak.


------------[ cut here ]------------
ODEBUG: free active (active state 0) object type: timer_list hint:
delayed_work_timer_fn+0x0/0x6e kernel/workqueue.c:4923
WARNING: CPU: 0 PID: 1 at lib/debugobjects.c:329
debug_print_object+0x164/0x17c lib/debugobjects.c:326
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.19.0-rc2-00205-ga49a9dcce802 #6
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1a5/0x28b lib/dump_stack.c:113
panic+0x239/0x4e8 kernel/panic.c:184
__warn+0x16f/0x1c5 kernel/panic.c:536
report_bug+0x163/0x1c9 lib/bug.c:186
fixup_bug+0x43/0x7c arch/x86/kernel/traps.c:178
do_error_trap+0xee/0x2ac arch/x86/kernel/traps.c:296
invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:993
RIP: 0010:debug_print_object+0x164/0x17c lib/debugobjects.c:326
Code: 3c 02 00 74 05 e8 06 12 cc fe 48 8b 14 dd 60 9c c8 86 4d 89 e9
49 89 e8 44 89 f1 4c 89 e6 48 c7 c7 a0 90 c8 86 e8 5e a7 7a fe <0f> 0b
5b ff 05 b1 92 45 06 5d 41 5c 41 5d 41 5e c3 ff 05 a3 92 45
RSP: 0000:ffff88006bbaf510 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffff88006bba2900
RDX: 000000616bba2900 RSI: ffffffff8148ef03 RDI: ffffed000d775e76
RBP: ffffffff868e66a0 R08: fffffbfff0ff8ff1 R09: 0000000000000001
R10: ffff88006bba2900 R11: fffffbfff0ff8ff0 R12: ffffffff86c89580
R13: ffffffff813c4247 R14: 0000000000000000 R15: ffff88006a131208
__debug_check_no_obj_freed lib/debugobjects.c:786 [inline]
debug_check_no_obj_freed+0x176/0x2a1 lib/debugobjects.c:818
slab_free_hook mm/slub.c:1368 [inline]
slab_free_freelist_hook+0x8a/0xed mm/slub.c:1398
slab_free mm/slub.c:2953 [inline]
kfree+0x187/0x222 mm/slub.c:3906
vudc_probe+0x9d9/0xa24 drivers/usb/usbip/vudc_dev.c:633
platform_drv_probe+0xdd/0x181 drivers/base/platform.c:579
really_probe+0x590/0xb2a drivers/base/dd.c:500
driver_probe_device+0x2a8/0x313 drivers/base/dd.c:662
__device_attach_driver+0x220/0x27b drivers/base/dd.c:758
bus_for_each_drv+0x177/0x1b8 drivers/base/bus.c:461
__device_attach+0x203/0x36d drivers/base/dd.c:815
bus_probe_device+0xc8/0x22d drivers/base/bus.c:521
device_add+0x5b6/0x1273 drivers/base/core.c:1927
platform_device_add+0x53a/0x68d drivers/base/platform.c:417
init+0x13e/0x3c4 arch/x86/crypto/blowfish_glue.c:444
do_one_initcall+0x2d8/0x63f init/main.c:885
do_initcall_level init/main.c:953 [inline]
do_initcalls init/main.c:961 [inline]
do_basic_setup init/main.c:979 [inline]
kernel_init_freeable+0x4bb/0x5ac init/main.c:1144
kernel_init+0x11/0x1b6 init/main.c:1063
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413
[unhandled content-type:application/octet-stream]
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