em28xx 5-1:0.108: No AC97 audio processor
list_add corruption. prev->next should be next (ffffffff8f1f68e0), but was 0000000000000000. (prev=ffff88801ee78250).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:32!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 1 PID: 815 Comm: kworker/1:2 Not tainted 6.9.0-rc2-syzkaller-g39cd87c4eb2b #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: usb_hub_wq hub_event
RIP: 0010:__list_add_valid_or_report+0xbe/0x100 lib/list_debug.c:32
Code: e9 fc 90 0f 0b 48 89 d9 48 c7 c7 e0 4c 8f 8b e8 48 de e9 fc 90 0f 0b 48 89 f1 48 c7 c7 60 4d 8f 8b 48 89 de e8 33 de e9 fc 90 <0f> 0b 48 89 f2 48 89 d9 48 89 ee 48 c7 c7 e0 4d 8f 8b e8 1b de e9
RSP: 0018:ffffc90005326f08 EFLAGS: 00010286
RAX: 0000000000000075 RBX: ffffffff8f1f68e0 RCX: ffffffff816e2759
RDX: 0000000000000000 RSI: ffffffff816eb496 RDI: 0000000000000005
RBP: ffff888011f28250 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000006 R12: ffff888011f28250
R13: ffff888011f28000 R14: ffff888011f29a04 R15: ffff88801d9a7800
FS:  0000000000000000(0000) GS:ffff88806b100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f47eba8c38 CR3: 000000001e4b0000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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+0x48/0x200 drivers/media/usb/em28xx/em28xx-core.c:1113
 em28xx_init_dev.constprop.0+0x197b/0x3090 drivers/media/usb/em28xx/em28xx-cards.c:3627
 em28xx_usb_probe+0x10db/0x3730 drivers/media/usb/em28xx/em28xx-cards.c:3982
 usb_probe_interface+0x309/0x9d0 drivers/usb/core/driver.c:399
 call_driver_probe drivers/base/dd.c:578 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:656
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:798
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:828
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:956
 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1028
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
 device_add+0x1188/0x1ab0 drivers/base/core.c:3705
 usb_set_configuration+0x10cb/0x1c50 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:254
 usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:294
 call_driver_probe drivers/base/dd.c:578 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:656
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:798
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:828
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:956
 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1028
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
 device_add+0x1188/0x1ab0 drivers/base/core.c:3705
 usb_new_device+0xd90/0x1a10 drivers/usb/core/hub.c:2652
 hub_port_connect drivers/usb/core/hub.c:5521 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
 port_event drivers/usb/core/hub.c:5821 [inline]
 hub_event+0x2db0/0x4e20 drivers/usb/core/hub.c:5903
 process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3254
 process_scheduled_works kernel/workqueue.c:3335 [inline]
 worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_add_valid_or_report+0xbe/0x100 lib/list_debug.c:32
Code: e9 fc 90 0f 0b 48 89 d9 48 c7 c7 e0 4c 8f 8b e8 48 de e9 fc 90 0f 0b 48 89 f1 48 c7 c7 60 4d 8f 8b 48 89 de e8 33 de e9 fc 90 <0f> 0b 48 89 f2 48 89 d9 48 89 ee 48 c7 c7 e0 4d 8f 8b e8 1b de e9
RSP: 0018:ffffc90005326f08 EFLAGS: 00010286
RAX: 0000000000000075 RBX: ffffffff8f1f68e0 RCX: ffffffff816e2759
RDX: 0000000000000000 RSI: ffffffff816eb496 RDI: 0000000000000005
RBP: ffff888011f28250 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000006 R12: ffff888011f28250
R13: ffff888011f28000 R14: ffff888011f29a04 R15: ffff88801d9a7800
FS:  0000000000000000(0000) GS:ffff88806b100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f47eba8c38 CR3: 000000001e4b0000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400