em28xx 5-1:0.130: Config register raw data: 0xfffffffb
em28xx 5-1:0.130: AC97 chip type couldn't be determined
em28xx 5-1:0.130: No AC97 audio processor
==================================================================
BUG: KASAN: use-after-free in __list_add_valid+0xa5/0xb0 lib/list_debug.c:30
Read of size 8 at addr ffff888025588250 by task kworker/2:3/3690

CPU: 2 PID: 3690 Comm: kworker/2:3 Not tainted 6.0.0-rc3-syzkaller-00792-gdcf8e5633e2e #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:317 [inline]
 print_report.cold+0x2ba/0x6e9 mm/kasan/report.c:433
 kasan_report+0xb1/0x1e0 mm/kasan/report.c:495
 __list_add_valid+0xa5/0xb0 lib/list_debug.c:30
 __list_add include/linux/list.h:69 [inline]
 list_add_tail include/linux/list.h:102 [inline]
 em28xx_init_extension+0x44/0x1f0 drivers/media/usb/em28xx/em28xx-core.c:1113
 em28xx_init_dev.constprop.0+0xa8b/0x1746 drivers/media/usb/em28xx/em28xx-cards.c:3627
 em28xx_usb_probe.cold+0xc29/0x258a drivers/media/usb/em28xx/em28xx-cards.c:3982
 usb_probe_interface+0x30b/0x7f0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:530 [inline]
 really_probe+0x249/0xb90 drivers/base/dd.c:609
 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:748
 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:778
 __device_attach_driver+0x206/0x2e0 drivers/base/dd.c:901
 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
 __device_attach+0x1e4/0x530 drivers/base/dd.c:973
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
 device_add+0xbd5/0x1e90 drivers/base/core.c:3517
 usb_set_configuration+0x1019/0x1900 drivers/usb/core/message.c:2170
 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238
 usb_probe_device+0xd4/0x2c0 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:530 [inline]
 really_probe+0x249/0xb90 drivers/base/dd.c:609
 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:748
 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:778
 __device_attach_driver+0x206/0x2e0 drivers/base/dd.c:901
 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
 __device_attach+0x1e4/0x530 drivers/base/dd.c:973
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
 device_add+0xbd5/0x1e90 drivers/base/core.c:3517
 usb_new_device.cold+0x685/0x10ad drivers/usb/core/hub.c:2573
 hub_port_connect drivers/usb/core/hub.c:5353 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5497 [inline]
 port_event drivers/usb/core/hub.c:5653 [inline]
 hub_event+0x26c7/0x4610 drivers/usb/core/hub.c:5735
 process_one_work+0x991/0x1610 kernel/workqueue.c:2289
 process_scheduled_works kernel/workqueue.c:2352 [inline]
 worker_thread+0x854/0x1080 kernel/workqueue.c:2438
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>

Allocated by task 3690:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:437 [inline]
 ____kasan_kmalloc mm/kasan/common.c:516 [inline]
 ____kasan_kmalloc mm/kasan/common.c:475 [inline]
 __kasan_kmalloc+0xa6/0xd0 mm/kasan/common.c:525
 kasan_kmalloc include/linux/kasan.h:234 [inline]
 __do_kmalloc mm/slab.c:3686 [inline]
 __kmalloc_track_caller+0x1f6/0x4a0 mm/slab.c:3701
 kmemdup+0x23/0x50 mm/util.c:129
 kmemdup include/linux/fortify-string.h:456 [inline]
 em28xx_duplicate_dev drivers/media/usb/em28xx/em28xx-cards.c:3680 [inline]
 em28xx_usb_probe.cold+0x134a/0x258a drivers/media/usb/em28xx/em28xx-cards.c:4030
 usb_probe_interface+0x30b/0x7f0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:530 [inline]
 really_probe+0x249/0xb90 drivers/base/dd.c:609
 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:748
 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:778
 __device_attach_driver+0x206/0x2e0 drivers/base/dd.c:901
 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
 __device_attach+0x1e4/0x530 drivers/base/dd.c:973
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
 device_add+0xbd5/0x1e90 drivers/base/core.c:3517
 usb_set_configuration+0x1019/0x1900 drivers/usb/core/message.c:2170
 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238
 usb_probe_device+0xd4/0x2c0 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:530 [inline]
 really_probe+0x249/0xb90 drivers/base/dd.c:609
 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:748
 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:778
 __device_attach_driver+0x206/0x2e0 drivers/base/dd.c:901
 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
 __device_attach+0x1e4/0x530 drivers/base/dd.c:973
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
 device_add+0xbd5/0x1e90 drivers/base/core.c:3517
 usb_new_device.cold+0x685/0x10ad drivers/usb/core/hub.c:2573
 hub_port_connect drivers/usb/core/hub.c:5353 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5497 [inline]
 port_event drivers/usb/core/hub.c:5653 [inline]
 hub_event+0x26c7/0x4610 drivers/usb/core/hub.c:5735
 process_one_work+0x991/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

Freed by task 3690:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
 kasan_set_track+0x21/0x30 mm/kasan/common.c:45
 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370
 ____kasan_slab_free mm/kasan/common.c:367 [inline]
 ____kasan_slab_free+0x13d/0x1a0 mm/kasan/common.c:329
 kasan_slab_free include/linux/kasan.h:200 [inline]
 __cache_free mm/slab.c:3418 [inline]
 kfree+0x173/0x390 mm/slab.c:3786
 __refcount_sub_and_test include/linux/refcount.h:282 [inline]
 __refcount_dec_and_test include/linux/refcount.h:315 [inline]
 refcount_dec_and_test include/linux/refcount.h:333 [inline]
 kref_put.constprop.0.isra.0+0x3d/0x7e include/linux/kref.h:64
 em28xx_usb_disconnect.cold+0x1c2/0x237 drivers/media/usb/em28xx/em28xx-cards.c:4148
 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:520 [inline]
 device_remove+0x11f/0x170 drivers/base/dd.c:512
 __device_release_driver drivers/base/dd.c:1209 [inline]
 device_release_driver_internal+0x4a1/0x700 drivers/base/dd.c:1235
 bus_remove_device+0x2e3/0x590 drivers/base/bus.c:529
 device_del+0x4f3/0xc80 drivers/base/core.c:3704
 usb_disable_device+0x356/0x7a0 drivers/usb/core/message.c:1419
 usb_disconnect.cold+0x259/0x6ed drivers/usb/core/hub.c:2235
 hub_port_connect drivers/usb/core/hub.c:5197 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5497 [inline]
 port_event drivers/usb/core/hub.c:5653 [inline]
 hub_event+0x1f86/0x4610 drivers/usb/core/hub.c:5735
 process_one_work+0x991/0x1610 kernel/workqueue.c:2289
 process_scheduled_works kernel/workqueue.c:2352 [inline]
 worker_thread+0x854/0x1080 kernel/workqueue.c:2438
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

The buggy address belongs to the object at ffff888025588000
 which belongs to the cache kmalloc-16k of size 16384
The buggy address is located 592 bytes inside of
 16384-byte region [ffff888025588000, ffff88802558c000)

The buggy address belongs to the physical page:
page:ffffea0000956200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x25588
head:ffffea0000956200 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffffea0000a01408 ffffea00006f0008 ffff888010c40b00
raw: 0000000000000000 ffff888025588000 0000000100000001 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x3420c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_COMP|__GFP_HARDWALL|__GFP_THISNODE), pid 3690, tgid 3690 (kworker/2:3), ts 79577229824, free_ts 75143484200
 prep_new_page mm/page_alloc.c:2532 [inline]
 get_page_from_freelist+0x109b/0x2ce0 mm/page_alloc.c:4283
 __alloc_pages+0x1c7/0x510 mm/page_alloc.c:5515
 __alloc_pages_node include/linux/gfp.h:243 [inline]
 kmem_getpages mm/slab.c:1363 [inline]
 cache_grow_begin+0x75/0x360 mm/slab.c:2569
 cache_alloc_refill+0x27f/0x380 mm/slab.c:2942
 ____cache_alloc mm/slab.c:3018 [inline]
 ____cache_alloc mm/slab.c:3001 [inline]
 __do_cache_alloc mm/slab.c:3246 [inline]
 slab_alloc mm/slab.c:3287 [inline]
 __do_kmalloc mm/slab.c:3684 [inline]
 __kmalloc_track_caller+0x39e/0x4a0 mm/slab.c:3701
 kmemdup+0x23/0x50 mm/util.c:129
 kmemdup include/linux/fortify-string.h:456 [inline]
 em28xx_duplicate_dev drivers/media/usb/em28xx/em28xx-cards.c:3680 [inline]
 em28xx_usb_probe.cold+0x134a/0x258a drivers/media/usb/em28xx/em28xx-cards.c:4030
 usb_probe_interface+0x30b/0x7f0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:530 [inline]
 really_probe+0x249/0xb90 drivers/base/dd.c:609
 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:748
 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:778
 __device_attach_driver+0x206/0x2e0 drivers/base/dd.c:901
 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
 __device_attach+0x1e4/0x530 drivers/base/dd.c:973
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
 device_add+0xbd5/0x1e90 drivers/base/core.c:3517
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1449 [inline]
 free_pcp_prepare+0x5e4/0xd20 mm/page_alloc.c:1499
 free_unref_page_prepare mm/page_alloc.c:3380 [inline]
 free_unref_page+0x19/0x4d0 mm/page_alloc.c:3476
 __folio_put_large mm/swap.c:118 [inline]
 __folio_put+0x105/0x130 mm/swap.c:126
 folio_put include/linux/mm.h:1125 [inline]
 put_page include/linux/mm.h:1177 [inline]
 do_exit+0x1f14/0x29b0 kernel/exit.c:834
 do_group_exit+0xd2/0x2f0 kernel/exit.c:925
 __do_sys_exit_group kernel/exit.c:936 [inline]
 __se_sys_exit_group kernel/exit.c:934 [inline]
 __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:934
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffff888025588100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888025588180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888025588200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                 ^
 ffff888025588280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888025588300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================