list_add corruption. prev->next should be next (ffffffff8f153020), but was 0000000000000000. (prev=ffff888029a0c250).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:34!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 24 Comm: kworker/1:0 Not tainted 6.16.0-syzkaller-g7e161a991ea7 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: usb_hub_wq hub_event
RIP: 0010:__list_add_valid_or_report+0x123/0x130 lib/list_debug.c:32
Code: e8 a2 c4 32 fd 43 80 3c 2c 00 74 08 4c 89 f7 e8 b3 b1 53 fd 49 8b 16 48 c7 c7 40 24 e3 8b 48 89 de 4c 89 f1 e8 0e 47 58 fc 90 <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900001e6ac0 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffffffff8f153020 RCX: c00cd53e92e4f300
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 1ffffffff1e2a605 R08: ffffc900001e67e7 R09: 1ffff9200003ccfc
R10: dffffc0000000000 R11: fffff5200003ccfd R12: 1ffff1100534184a
R13: dffffc0000000000 R14: ffff888029a0c250 R15: ffff8880586e4250
FS:  0000000000000000(0000) GS:ffff888125d24000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe522aaaeb8 CR3: 0000000031eee000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __list_add_valid include/linux/list.h:88 [inline]
 __list_add include/linux/list.h:150 [inline]
 list_add_tail include/linux/list.h:183 [inline]
 em28xx_init_extension+0x56/0x1c0 drivers/media/usb/em28xx/em28xx-core.c:1114
 em28xx_init_dev+0x9bd/0x20b0 drivers/media/usb/em28xx/em28xx-cards.c:3679
 em28xx_usb_probe+0x14e9/0x2a20 drivers/media/usb/em28xx/em28xx-cards.c:4034
 usb_probe_interface+0x668/0xc30 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x26a/0x9e0 drivers/base/dd.c:659
 __driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:801
 driver_probe_device+0x4f/0x430 drivers/base/dd.c:831
 __device_attach_driver+0x2ce/0x530 drivers/base/dd.c:959
 bus_for_each_drv+0x251/0x2e0 drivers/base/bus.c:462
 __device_attach+0x2b8/0x400 drivers/base/dd.c:1031
 bus_probe_device+0x185/0x260 drivers/base/bus.c:537
 device_add+0x7b6/0xb50 drivers/base/core.c:3689
 usb_set_configuration+0x1a87/0x20e0 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250
 usb_probe_device+0x1c1/0x390 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x26a/0x9e0 drivers/base/dd.c:659
 __driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:801
 driver_probe_device+0x4f/0x430 drivers/base/dd.c:831
 __device_attach_driver+0x2ce/0x530 drivers/base/dd.c:959
 bus_for_each_drv+0x251/0x2e0 drivers/base/bus.c:462
 __device_attach+0x2b8/0x400 drivers/base/dd.c:1031
 bus_probe_device+0x185/0x260 drivers/base/bus.c:537
 device_add+0x7b6/0xb50 drivers/base/core.c:3689
 usb_new_device+0xa39/0x16f0 drivers/usb/core/hub.c:2694
 hub_port_connect drivers/usb/core/hub.c:5566 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5706 [inline]
 port_event drivers/usb/core/hub.c:5870 [inline]
 hub_event+0x2958/0x4a20 drivers/usb/core/hub.c:5952
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_add_valid_or_report+0x123/0x130 lib/list_debug.c:32
Code: e8 a2 c4 32 fd 43 80 3c 2c 00 74 08 4c 89 f7 e8 b3 b1 53 fd 49 8b 16 48 c7 c7 40 24 e3 8b 48 89 de 4c 89 f1 e8 0e 47 58 fc 90 <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900001e6ac0 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffffffff8f153020 RCX: c00cd53e92e4f300
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 1ffffffff1e2a605 R08: ffffc900001e67e7 R09: 1ffff9200003ccfc
R10: dffffc0000000000 R11: fffff5200003ccfd R12: 1ffff1100534184a
R13: dffffc0000000000 R14: ffff888029a0c250 R15: ffff8880586e4250
FS:  0000000000000000(0000) GS:ffff888125d24000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005636f2640138 CR3: 0000000031eee000 CR4: 00000000003526f0