em28xx 4-1:0.0: Config register raw data: 0xfffffffb em28xx 4-1:0.0: AC97 chip type couldn't be determined em28xx 4-1:0.0: No AC97 audio processor usb 4-1: USB disconnect, device number 24 em28xx 4- em28xx 4-1:0.0: Disconnecting em28xx #1 em28xx 4-1:0.0: Disconnecting em28xx list_del corruption, ffff888114ef8250->next is NULL ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:52! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 5242 Comm: kworker/1:4 Not tainted syzkaller #0 PREEMPT(lazy) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: usb_hub_wq hub_event RIP: 0010:__list_del_entry_valid_or_report.cold+0x22/0x2a lib/list_debug.c:52 Code: e8 bd c8 fa ff 90 0f 0b 48 89 de 48 c7 c7 00 9c d2 87 e8 ab c8 fa ff 90 0f 0b 48 89 de 48 c7 c7 a0 9b d2 87 e8 99 c8 fa ff 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000211f5f0 EFLAGS: 00010282 RAX: 0000000000000033 RBX: ffff888114ef8250 RCX: 0000000000000000 RDX: 0000000000000033 RSI: ffffffff81936299 RDI: fffff52000423eaf RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000 R10: 8000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff888114ef8250 R14: ffff888114ef8258 R15: ffffed1026ca5c6f FS: 0000000000000000(0000) GS:ffff8882684eb000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7ad4c517b5 CR3: 000000012cd86000 CR4: 00000000003506f0 Call Trace: __list_del_entry_valid include/linux/list.h:140 [inline] __list_del_entry include/linux/list.h:261 [inline] list_del include/linux/list.h:275 [inline] em28xx_close_extension+0x147/0x460 drivers/media/usb/em28xx/em28xx-core.c:1269 em28xx_usb_disconnect.cold+0x13d/0x253 drivers/media/usb/em28xx/em28xx-cards.c:4451 usb_unbind_interface+0x1dd/0x9e0 drivers/usb/core/driver.c:461 device_remove drivers/base/dd.c:618 [inline] device_remove+0x12a/0x180 drivers/base/dd.c:610 __device_release_driver drivers/base/dd.c:1349 [inline] device_release_driver_internal+0x44e/0x620 drivers/base/dd.c:1372 bus_remove_device+0x2bc/0x560 drivers/base/bus.c:664 device_del+0x376/0x9b0 drivers/base/core.c:3965 usb_disable_device+0x367/0x810 drivers/usb/core/message.c:1478 usb_disconnect+0x2e2/0x9a0 drivers/usb/core/hub.c:2350 hub_port_connect drivers/usb/core/hub.c:5420 [inline] hub_port_connect_change drivers/usb/core/hub.c:5720 [inline] port_event drivers/usb/core/hub.c:5884 [inline] hub_event+0x1d46/0x4510 drivers/usb/core/hub.c:5966 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3387 process_scheduled_works kernel/workqueue.c:3470 [inline] worker_thread+0x5ef/0xe50 kernel/workqueue.c:3551 kthread+0x373/0x450 kernel/kthread.c:436 ret_from_fork+0x69f/0xc90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del_entry_valid_or_report.cold+0x22/0x2a lib/list_debug.c:52 Code: e8 bd c8 fa ff 90 0f 0b 48 89 de 48 c7 c7 00 9c d2 87 e8 ab c8 fa ff 90 0f 0b 48 89 de 48 c7 c7 a0 9b d2 87 e8 99 c8 fa ff 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000211f5f0 EFLAGS: 00010282 RAX: 0000000000000033 RBX: ffff888114ef8250 RCX: 0000000000000000 RDX: 0000000000000033 RSI: ffffffff81936299 RDI: fffff52000423eaf RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000 R10: 8000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff888114ef8250 R14: ffff888114ef8258 R15: ffffed1026ca5c6f FS: 0000000000000000(0000) GS:ffff8882684eb000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562a9a0d1190 CR3: 000000012426a000 CR4: 00000000003506f0