em28xx 5-1:0.130: No AC97 audio processor list_add corruption. prev->next should be next (ffffffff8e5c86c0), but was 0000000000000000. (prev=ffff8880179c0250). ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:32! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 821 Comm: kworker/0:2 Not tainted 6.7.0-rc1-syzkaller-g9bacdd8996c7 #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+0xb6/0x100 lib/list_debug.c:32 Code: e8 cf 97 ff fc 0f 0b 48 89 d9 48 c7 c7 80 ef 2e 8b e8 be 97 ff fc 0f 0b 48 89 f1 48 c7 c7 00 f0 2e 8b 48 89 de e8 aa 97 ff fc <0f> 0b 48 89 f2 48 89 d9 48 89 ee 48 c7 c7 80 f0 2e 8b e8 93 97 ff RSP: 0018:ffffc90004586f28 EFLAGS: 00010282 RAX: 0000000000000075 RBX: ffffffff8e5c86c0 RCX: ffffffff816a63f9 RDX: 0000000000000000 RSI: ffffffff816af882 RDI: 0000000000000005 RBP: ffff888028298250 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 6464615f7473696c R12: ffff888028298250 R13: ffff888028298000 R14: ffff8880282999d4 R15: ffff88802e241000 FS: 0000000000000000(0000) GS:ffff88806b600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056003d106e70 CR3: 000000001bab5000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __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+0x48/0x1f0 drivers/media/usb/em28xx/em28xx-core.c:1113 em28xx_init_dev.constprop.0+0x1977/0x3080 drivers/media/usb/em28xx/em28xx-cards.c:3627 em28xx_usb_probe+0x10d7/0x3730 drivers/media/usb/em28xx/em28xx-cards.c:3982 usb_probe_interface+0x307/0x930 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x234/0xc90 drivers/base/dd.c:658 __driver_probe_device+0x1de/0x4b0 drivers/base/dd.c:800 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:830 __device_attach_driver+0x1d4/0x300 drivers/base/dd.c:958 bus_for_each_drv+0x157/0x1d0 drivers/base/bus.c:457 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030 bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532 device_add+0x117e/0x1aa0 drivers/base/core.c:3625 usb_set_configuration+0x10cb/0x1c40 drivers/usb/core/message.c:2207 usb_generic_driver_probe+0xca/0x130 drivers/usb/core/generic.c:238 usb_probe_device+0xda/0x2c0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x234/0xc90 drivers/base/dd.c:658 __driver_probe_device+0x1de/0x4b0 drivers/base/dd.c:800 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:830 __device_attach_driver+0x1d4/0x300 drivers/base/dd.c:958 bus_for_each_drv+0x157/0x1d0 drivers/base/bus.c:457 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030 bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532 device_add+0x117e/0x1aa0 drivers/base/core.c:3625 usb_new_device+0xd80/0x19f0 drivers/usb/core/hub.c:2599 hub_port_connect drivers/usb/core/hub.c:5463 [inline] hub_port_connect_change drivers/usb/core/hub.c:5603 [inline] port_event drivers/usb/core/hub.c:5763 [inline] hub_event+0x2dac/0x4e10 drivers/usb/core/hub.c:5845 process_one_work+0x884/0x15c0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784 kthread+0x33c/0x440 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_add_valid_or_report+0xb6/0x100 lib/list_debug.c:32 Code: e8 cf 97 ff fc 0f 0b 48 89 d9 48 c7 c7 80 ef 2e 8b e8 be 97 ff fc 0f 0b 48 89 f1 48 c7 c7 00 f0 2e 8b 48 89 de e8 aa 97 ff fc <0f> 0b 48 89 f2 48 89 d9 48 89 ee 48 c7 c7 80 f0 2e 8b e8 93 97 ff RSP: 0018:ffffc90004586f28 EFLAGS: 00010282 RAX: 0000000000000075 RBX: ffffffff8e5c86c0 RCX: ffffffff816a63f9 RDX: 0000000000000000 RSI: ffffffff816af882 RDI: 0000000000000005 RBP: ffff888028298250 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 6464615f7473696c R12: ffff888028298250 R13: ffff888028298000 R14: ffff8880282999d4 R15: ffff88802e241000 FS: 0000000000000000(0000) GS:ffff88806b600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056003d106e70 CR3: 000000001bab5000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400