em28xx 5-1:0.0: No AC97 audio processor
 non-slab/vmalloc memory
list_add corruption. prev->next should be next (ffffffff8f907f20), but was 0000000000000000. (prev=ffff888056340250).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:34!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 6017 Comm: kworker/0:7 Not tainted 6.14.0-rc1-syzkaller-g7ee983c850b4 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: usb_hub_wq hub_event
RIP: 0010:__list_add_valid_or_report+0x123/0x130 lib/list_debug.c:32
Code: f3 49 15 fd 42 80 3c 2b 00 74 08 4c 89 e7 e8 b4 f5 36 fd 49 8b 14 24 48 c7 c7 80 8d 60 8c 4c 89 f6 4c 89 e1 e8 2e 03 38 fc 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900028fea60 EFLAGS: 00010246
RAX: 0000000000000075 RBX: 1ffff1100ac6804a RCX: 1c5ef70529fe9700
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 1ffffffff1f20fe5 R08: ffffffff819f146c R09: 1ffff11003f8519a
R10: dffffc0000000000 R11: ffffed1003f8519b R12: ffff888056340250
R13: dffffc0000000000 R14: ffffffff8f907f20 R15: ffff8880581a4250
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3fba137a8c CR3: 000000000e738000 CR4: 0000000000352ef0
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+0x56/0x1c0 drivers/media/usb/em28xx/em28xx-core.c:1114
 em28xx_init_dev+0x907/0x1cd0 drivers/media/usb/em28xx/em28xx-cards.c:3679
 em28xx_usb_probe+0x1572/0x2b80 drivers/media/usb/em28xx/em28xx-cards.c:4034
 usb_probe_interface+0x641/0xbb0 drivers/usb/core/driver.c:396
 really_probe+0x2b9/0xad0 drivers/base/dd.c:658
 __driver_probe_device+0x1a2/0x390 drivers/base/dd.c:800
 driver_probe_device+0x50/0x430 drivers/base/dd.c:830
 __device_attach_driver+0x2d6/0x530 drivers/base/dd.c:958
 bus_for_each_drv+0x24e/0x2e0 drivers/base/bus.c:462
 __device_attach+0x333/0x520 drivers/base/dd.c:1030
 bus_probe_device+0x189/0x260 drivers/base/bus.c:537
 device_add+0x856/0xbf0 drivers/base/core.c:3665
 usb_set_configuration+0x1976/0x1fb0 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0x88/0x140 drivers/usb/core/generic.c:250
 usb_probe_device+0x1b8/0x380 drivers/usb/core/driver.c:291
 really_probe+0x2b9/0xad0 drivers/base/dd.c:658
 __driver_probe_device+0x1a2/0x390 drivers/base/dd.c:800
 driver_probe_device+0x50/0x430 drivers/base/dd.c:830
 __device_attach_driver+0x2d6/0x530 drivers/base/dd.c:958
 bus_for_each_drv+0x24e/0x2e0 drivers/base/bus.c:462
 __device_attach+0x333/0x520 drivers/base/dd.c:1030
 bus_probe_device+0x189/0x260 drivers/base/bus.c:537
 device_add+0x856/0xbf0 drivers/base/core.c:3665
 usb_new_device+0x104a/0x19a0 drivers/usb/core/hub.c:2652
 hub_port_connect drivers/usb/core/hub.c:5523 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5663 [inline]
 port_event drivers/usb/core/hub.c:5823 [inline]
 hub_event+0x2d6d/0x5150 drivers/usb/core/hub.c:5905
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317
 worker_thread+0x870/0xd30 kernel/workqueue.c:3398
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_add_valid_or_report+0x123/0x130 lib/list_debug.c:32
Code: f3 49 15 fd 42 80 3c 2b 00 74 08 4c 89 e7 e8 b4 f5 36 fd 49 8b 14 24 48 c7 c7 80 8d 60 8c 4c 89 f6 4c 89 e1 e8 2e 03 38 fc 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900028fea60 EFLAGS: 00010246
RAX: 0000000000000075 RBX: 1ffff1100ac6804a RCX: 1c5ef70529fe9700
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 1ffffffff1f20fe5 R08: ffffffff819f146c R09: 1ffff11003f8519a
R10: dffffc0000000000 R11: ffffed1003f8519b R12: ffff888056340250
R13: dffffc0000000000 R14: ffffffff8f907f20 R15: ffff8880581a4250
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f05c002cd11 CR3: 0000000053c12000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400