FYI, we noticed the following commit:

commit: cf3113d893d4427b166ec8695460efa7aa660923 ("usb: dwc3: gadget: properly increment dequeue pointer on ep_dequeue")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

in testcase: trinity
with following parameters:

	runtime: 300s

test-description: Trinity is a linux system call fuzz tester.
test-url: http://codemonkey.org.uk/projects/trinity/


on test machine: qemu-system-i386 -enable-kvm -m 256M

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):


+-----------------------------------------------------------------------------+------------+------------+
|                                                                             | 2bfa0719ac | cf3113d893 |
+-----------------------------------------------------------------------------+------------+------------+
| boot_successes                                                              | 0          | 0          |
| boot_failures                                                               | 22         | 22         |
| kobject(#):tried_to_init_an_initialized_object,something_is_seriously_wrong | 19         | 18         |
| WARNING:at_lib/kobject.c:#kobject_get                                       | 18         | 16         |
| WARNING:at_lib/refcount.c:#refcount_inc                                     | 18         | 16         |
| BUG:unable_to_handle_kernel                                                 | 19         | 16         |
| Oops:#[##]                                                                  | 19         | 16         |
| EIP:kernfs_link_sibling                                                     | 18         | 15         |
| Kernel_panic-not_syncing:Fatal_exception                                    | 19         | 16         |
| invoked_oom-killer:gfp_mask=0x                                              | 3          | 4          |
| Mem-Info                                                                    | 3          | 4          |
| Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes            | 3          | 4          |
| es#_lib.c:#ess_reset_at#:failed                                             | 0          | 2          |
| EIP:__lock_acquire                                                          | 0          | 1          |
+-----------------------------------------------------------------------------+------------+------------+




[   22.173820] isa azt1605.0: please specify port
[   22.185877] isa azt2316.0: please specify port
[   22.185877] isa azt2316.0: please specify port
[   22.208486] ALSA gusmax.c:91 [0x220] check 1 failed - 0xff
[   22.208486] ALSA gusmax.c:91 [0x220] check 1 failed - 0xff
[   22.333210] ALSA es1688_lib.c:113 ess_reset at 0x220: failed!!!
[   22.333210] ALSA es1688_lib.c:113 ess_reset at 0x220: failed!!!
[   22.333210] ALSA es1688_lib.c:145 ESS: [0x220] reset failed... 0xff
[   22.333210] ALSA es1688_lib.c:145 ESS: [0x220] reset failed... 0xff
[   22.368868] snd_es1688_dsp_command: timeout (0xc0)
[   22.368868] snd_es1688_dsp_command: timeout (0xc0)
[   22.368868] snd_es1688_dsp_command: timeout (0xc0)


To reproduce:

        git clone https://github.com/01org/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script  # job-script is attached in this email



Thanks,
Xiaolong