==================================================================
BUG: KASAN: use-after-free in __list_del_entry_valid+0xa6/0x120 lib/list_debug.c:62
Read of size 8 at addr ffff88810f122c68 by task kworker/0:5/359

CPU: 0 PID: 359 Comm: kworker/0:5 Not tainted 5.10.226-syzkaller-00001-g6a01908517df #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events kernfs_notify_workfn
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack_lvl+0x1e2/0x24b lib/dump_stack.c:118
 print_address_description+0x81/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0x179/0x1c0 mm/kasan/report.c:452
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309
 __list_del_entry_valid+0xa6/0x120 lib/list_debug.c:62
 __list_del_entry include/linux/list.h:132 [inline]
 list_del_init include/linux/list.h:204 [inline]
 process_one_work+0x43f/0xbd0 kernel/workqueue.c:2245
 worker_thread+0xaea/0x1510 kernel/workqueue.c:2447
 kthread+0x34b/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298

Allocated by task 5:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:430 [inline]
 ____kasan_kmalloc+0xdb/0x110 mm/kasan/common.c:509
 __kasan_kmalloc+0x9/0x10 mm/kasan/common.c:518
 kasan_kmalloc include/linux/kasan.h:254 [inline]
 __kmalloc+0x1aa/0x330 mm/slub.c:4033
 __kmalloc_node include/linux/slab.h:418 [inline]
 kmalloc_node include/linux/slab.h:575 [inline]
 kvmalloc_node+0x82/0x130 mm/util.c:612
 kvmalloc include/linux/mm.h:822 [inline]
 kvzalloc include/linux/mm.h:830 [inline]
 alloc_netdev_mqs+0x8e/0xcd0 net/core/dev.c:10507
 alloc_etherdev_mqs+0x33/0x40 net/ethernet/eth.c:388
 usbnet_probe+0x1fc/0x2860 drivers/net/usb/usbnet.c:1661
 usb_probe_interface+0x5b6/0xa90 drivers/usb/core/driver.c:397
 really_probe+0x3eb/0xaf0 drivers/base/dd.c:562
 driver_probe_device+0xfd/0x260 drivers/base/dd.c:752
 __device_attach_driver+0x29b/0x410 drivers/base/dd.c:863
 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:431
 __device_attach+0x30a/0x500 drivers/base/dd.c:932
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:981
 bus_probe_device+0xbe/0x1e0 drivers/base/bus.c:491
 device_add+0x889/0xbc0 drivers/base/core.c:3276
 usb_set_configuration+0x19a5/0x1f30 drivers/usb/core/message.c:2160
 usb_generic_driver_probe+0x8b/0x150 drivers/usb/core/generic.c:238
 usb_probe_device+0x144/0x260 drivers/usb/core/driver.c:294
 really_probe+0x3eb/0xaf0 drivers/base/dd.c:562
 driver_probe_device+0xfd/0x260 drivers/base/dd.c:752
 __device_attach_driver+0x29b/0x410 drivers/base/dd.c:863
 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:431
 __device_attach+0x30a/0x500 drivers/base/dd.c:932
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:981
 bus_probe_device+0xbe/0x1e0 drivers/base/bus.c:491
 device_add+0x889/0xbc0 drivers/base/core.c:3276
 usb_new_device+0xbbc/0x1760 drivers/usb/core/hub.c:2615
 hub_port_connect drivers/usb/core/hub.c:5457 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5597 [inline]
 port_event drivers/usb/core/hub.c:5747 [inline]
 hub_event+0x2d3b/0x47c0 drivers/usb/core/hub.c:5829
 process_one_work+0x6dc/0xbd0 kernel/workqueue.c:2301
 worker_thread+0xaea/0x1510 kernel/workqueue.c:2447
 kthread+0x34b/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298

Freed by task 616:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x121/0x160 mm/kasan/common.c:362
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:370
 kasan_slab_free include/linux/kasan.h:220 [inline]
 slab_free_hook mm/slub.c:1595 [inline]
 slab_free_freelist_hook+0xc0/0x190 mm/slub.c:1621
 slab_free mm/slub.c:3203 [inline]
 kfree+0xc3/0x270 mm/slub.c:4191
 kvfree+0x35/0x40 mm/util.c:647
 netdev_freemem+0x3f/0x60 net/core/dev.c:10461
 netdev_release+0x7f/0xb0 net/core/net-sysfs.c:1886
 device_release+0x95/0x1c0
 kobject_cleanup lib/kobject.c:713 [inline]
 kobject_release lib/kobject.c:744 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x178/0x260 lib/kobject.c:761
 put_device+0x1f/0x30 drivers/base/core.c:3375
 free_netdev+0x384/0x470 net/core/dev.c:10638
 usbnet_disconnect+0x242/0x3a0 drivers/net/usb/usbnet.c:1600
 usb_unbind_interface+0x1fa/0x8c0 drivers/usb/core/driver.c:459
 device_release_driver_internal+0x506/0x7c0 drivers/base/dd.c:1221
 device_release_driver+0x19/0x20 drivers/base/dd.c:1244
 bus_remove_device+0x2f8/0x360 drivers/base/bus.c:533
 device_del+0x68b/0xf00 drivers/base/core.c:3455
 usb_disable_device+0x380/0x720 drivers/usb/core/message.c:1411
 usb_disconnect+0x32a/0x890 drivers/usb/core/hub.c:2271
 hub_port_connect drivers/usb/core/hub.c:5296 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5597 [inline]
 port_event drivers/usb/core/hub.c:5747 [inline]
 hub_event+0x1e73/0x47c0 drivers/usb/core/hub.c:5829
 process_one_work+0x6dc/0xbd0 kernel/workqueue.c:2301
 worker_thread+0xaea/0x1510 kernel/workqueue.c:2447
 kthread+0x34b/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298

Last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38
 __kasan_record_aux_stack+0xd3/0x100 mm/kasan/generic.c:348
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358
 insert_work+0x56/0x310 kernel/workqueue.c:1352
 __queue_work+0x970/0xd10 kernel/workqueue.c:1518
 queue_work_on+0x105/0x160 kernel/workqueue.c:1545
 usbnet_link_change+0xeb/0x100
 usbnet_probe+0x1df7/0x2860 drivers/net/usb/usbnet.c:1806
 usb_probe_interface+0x5b6/0xa90 drivers/usb/core/driver.c:397
 really_probe+0x3eb/0xaf0 drivers/base/dd.c:562
 driver_probe_device+0xfd/0x260 drivers/base/dd.c:752
 __device_attach_driver+0x29b/0x410 drivers/base/dd.c:863
 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:431
 __device_attach+0x30a/0x500 drivers/base/dd.c:932
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:981
 bus_probe_device+0xbe/0x1e0 drivers/base/bus.c:491
 device_add+0x889/0xbc0 drivers/base/core.c:3276
 usb_set_configuration+0x19a5/0x1f30 drivers/usb/core/message.c:2160
 usb_generic_driver_probe+0x8b/0x150 drivers/usb/core/generic.c:238
 usb_probe_device+0x144/0x260 drivers/usb/core/driver.c:294
 really_probe+0x3eb/0xaf0 drivers/base/dd.c:562
 driver_probe_device+0xfd/0x260 drivers/base/dd.c:752
 __device_attach_driver+0x29b/0x410 drivers/base/dd.c:863
 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:431
 __device_attach+0x30a/0x500 drivers/base/dd.c:932
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:981
 bus_probe_device+0xbe/0x1e0 drivers/base/bus.c:491
 device_add+0x889/0xbc0 drivers/base/core.c:3276
 usb_new_device+0xbbc/0x1760 drivers/usb/core/hub.c:2615
 hub_port_connect drivers/usb/core/hub.c:5457 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5597 [inline]
 port_event drivers/usb/core/hub.c:5747 [inline]
 hub_event+0x2d3b/0x47c0 drivers/usb/core/hub.c:5829
 process_one_work+0x6dc/0xbd0 kernel/workqueue.c:2301
 worker_thread+0xaea/0x1510 kernel/workqueue.c:2447
 kthread+0x34b/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298

The buggy address belongs to the object at ffff88810f122000
 which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 3176 bytes inside of
 4096-byte region [ffff88810f122000, ffff88810f123000)
The buggy address belongs to the page:
page:ffffea00043c4800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10f120
head:ffffea00043c4800 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head)
raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100042c00
raw: 0000000000000000 0000000000040004 00000001ffffffff 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 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 6872, ts 392565675172, free_ts 392193885744
 set_page_owner include/linux/page_owner.h:35 [inline]
 post_alloc_hook mm/page_alloc.c:2456 [inline]
 prep_new_page+0x166/0x180 mm/page_alloc.c:2462
 get_page_from_freelist+0x2d8c/0x2f30 mm/page_alloc.c:4254
 __alloc_pages_nodemask+0x435/0xaf0 mm/page_alloc.c:5348
 allocate_slab mm/slub.c:1808 [inline]
 new_slab+0x80/0x400 mm/slub.c:1869
 new_slab_objects mm/slub.c:2627 [inline]
 ___slab_alloc+0x302/0x4b0 mm/slub.c:2791
 __slab_alloc+0x63/0xa0 mm/slub.c:2831
 slab_alloc_node mm/slub.c:2913 [inline]
 slab_alloc mm/slub.c:2955 [inline]
 __kmalloc_track_caller+0x1f8/0x320 mm/slub.c:4536
 kmemdup+0x24/0x50 mm/util.c:131
 __addrconf_sysctl_register+0xad/0x3e0 net/ipv6/addrconf.c:7018
 addrconf_sysctl_register+0x141/0x1a0 net/ipv6/addrconf.c:7083
 ipv6_add_dev+0xc11/0x10b0 net/ipv6/addrconf.c:448
 ipv6_find_idev net/ipv6/addrconf.c:484 [inline]
 inet6_rtm_newaddr+0x682/0x2740 net/ipv6/addrconf.c:4938
 rtnetlink_rcv_msg+0x955/0xc50 net/core/rtnetlink.c:5607
 netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2499
 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:5625
 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline]
 netlink_unicast+0x8df/0xac0 net/netlink/af_netlink.c:1348
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:28 [inline]
 free_pages_prepare mm/page_alloc.c:1349 [inline]
 __free_pages_ok+0x82c/0x850 mm/page_alloc.c:1629
 free_the_page+0x76/0x370 mm/page_alloc.c:5409
 __free_pages+0x67/0xc0 mm/page_alloc.c:5418
 __free_slab+0xcf/0x190 mm/slub.c:1894
 free_slab mm/slub.c:1909 [inline]
 discard_slab mm/slub.c:1915 [inline]
 unfreeze_partials+0x15e/0x190 mm/slub.c:2410
 put_cpu_partial+0xbf/0x180 mm/slub.c:2446
 __slab_free+0x2c8/0x3a0 mm/slub.c:3095
 do_slab_free mm/slub.c:3191 [inline]
 ___cache_free+0x111/0x130 mm/slub.c:3210
 qlink_free+0x50/0x90 mm/kasan/quarantine.c:157
 qlist_free_all+0x47/0xb0 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x15a/0x170 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:440
 kasan_slab_alloc include/linux/kasan.h:244 [inline]
 slab_post_alloc_hook+0x61/0x2f0 mm/slab.h:583
 slab_alloc_node mm/slub.c:2947 [inline]
 slab_alloc mm/slub.c:2955 [inline]
 kmem_cache_alloc+0x168/0x2e0 mm/slub.c:2960
 getname_flags+0xba/0x520 fs/namei.c:141
 user_path_at_empty+0x2d/0x50 fs/namei.c:2740

Memory state around the buggy address:
 ffff88810f122b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88810f122b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88810f122c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                          ^
 ffff88810f122c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88810f122d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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