usb 2-1: USB disconnect, device number 2
em28xx 2-1:0.0: Disconnecting em28xx #5
em28xx 2-1:0.0: Disconnecting em28xx
 non-slab/vmalloc memory
list_del corruption. prev->next should be ffff8881178d4250, but was 0000000000000000. (prev=ffff888104f08250)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:62!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:__list_del_entry_valid_or_report+0x14a/0x1d0 lib/list_debug.c:62
Code: 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8d 00 00 00 48 8b 55 00 48 89 e9 48 89 de 48 c7 c7 40 9c 8e 87 e8 97 92 5d fe 90 <0f> 0b 4c 89 e7 e8 5c 25 31 ff 48 89 ea 48 b8 00 00 00 00 00 fc ff
RSP: 0000:ffffc9000009f608 EFLAGS: 00010282
RAX: 000000000000006d RBX: ffff8881178d4250 RCX: 0000000000000000
RDX: 000000000000006d RSI: ffffffff8190e419 RDI: fffff52000013eb2
RBP: ffff888104f08250 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888120398250
R13: ffff8881178d4000 R14: ffffffff8a548f88 R15: ffffed1022f1ac45
FS:  0000000000000000(0000) GS:ffff88826896a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555cc7ce9ca0 CR3: 000000010df62000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:132 [inline]
 __list_del_entry include/linux/list.h:223 [inline]
 list_del include/linux/list.h:237 [inline]
 em28xx_close_extension+0x10b/0x2b0 drivers/media/usb/em28xx/em28xx-core.c:1137
 em28xx_usb_disconnect.cold+0x13d/0x253 drivers/media/usb/em28xx/em28xx-cards.c:4197
 usb_unbind_interface+0x1dd/0x9e0 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:571 [inline]
 device_remove+0x12a/0x180 drivers/base/dd.c:563
 __device_release_driver drivers/base/dd.c:1282 [inline]
 device_release_driver_internal+0x42e/0x600 drivers/base/dd.c:1305
 bus_remove_device+0x22f/0x440 drivers/base/bus.c:616
 device_del+0x376/0x9b0 drivers/base/core.c:3878
 usb_disable_device+0x367/0x810 drivers/usb/core/message.c:1418
 usb_disconnect+0x2e2/0x9a0 drivers/usb/core/hub.c:2345
 hub_port_connect drivers/usb/core/hub.c:5407 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5707 [inline]
 port_event drivers/usb/core/hub.c:5871 [inline]
 hub_event+0x1d0c/0x4af0 drivers/usb/core/hub.c:5953
 process_one_work+0x9c2/0x1840 kernel/workqueue.c:3257
 process_scheduled_works kernel/workqueue.c:3340 [inline]
 worker_thread+0x5da/0xe40 kernel/workqueue.c:3421
 kthread+0x3b3/0x730 kernel/kthread.c:463
 ret_from_fork+0x6c3/0xa20 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x14a/0x1d0 lib/list_debug.c:62
Code: 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8d 00 00 00 48 8b 55 00 48 89 e9 48 89 de 48 c7 c7 40 9c 8e 87 e8 97 92 5d fe 90 <0f> 0b 4c 89 e7 e8 5c 25 31 ff 48 89 ea 48 b8 00 00 00 00 00 fc ff
RSP: 0000:ffffc9000009f608 EFLAGS: 00010282

RAX: 000000000000006d RBX: ffff8881178d4250 RCX: 0000000000000000
RDX: 000000000000006d RSI: ffffffff8190e419 RDI: fffff52000013eb2
RBP: ffff888104f08250 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888120398250
R13: ffff8881178d4000 R14: ffffffff8a548f88 R15: ffffed1022f1ac45
FS:  0000000000000000(0000) GS:ffff88826896a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555cc7ce9ca0 CR3: 000000010df62000 CR4: 00000000003506f0