==================================================================
BUG: KASAN: slab-use-after-free in tcx_entry include/net/tcx.h:36 [inline]
BUG: KASAN: slab-use-after-free in sch_handle_ingress net/core/dev.c:3990 [inline]
BUG: KASAN: slab-use-after-free in __netif_receive_skb_core.constprop.0+0x3e0e/0x3f20 net/core/dev.c:5373
Read of size 8 at addr ffff888021c38208 by task kworker/0:1/8

CPU: 0 PID: 8 Comm: kworker/0:1 Not tainted 6.5.0-rc3-next-20230724-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Workqueue: wg-crypt-wg2 wg_packet_tx_worker
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:475
 kasan_report+0xda/0x110 mm/kasan/report.c:588
 tcx_entry include/net/tcx.h:36 [inline]
 sch_handle_ingress net/core/dev.c:3990 [inline]
 __netif_receive_skb_core.constprop.0+0x3e0e/0x3f20 net/core/dev.c:5373
 __netif_receive_skb_list_core+0x343/0x8a0 net/core/dev.c:5589
 __netif_receive_skb_list net/core/dev.c:5656 [inline]
 netif_receive_skb_list_internal+0x76b/0xe00 net/core/dev.c:5747
 netif_receive_skb_list+0x4f/0x430 net/core/dev.c:5799
 ieee80211_rx_napi+0x37f/0x400 net/mac80211/rx.c:5410
 ieee80211_rx include/net/mac80211.h:4949 [inline]
 ieee80211_tasklet_handler+0xd2/0x130 net/mac80211/main.c:316
 tasklet_action_common.constprop.0+0x242/0x3d0 kernel/softirq.c:780
 __do_softirq+0x218/0x965 kernel/softirq.c:553
 do_softirq kernel/softirq.c:454 [inline]
 do_softirq+0xaa/0xe0 kernel/softirq.c:441
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0xf8/0x120 kernel/softirq.c:381
 wg_timers_any_authenticated_packet_traversal+0x96/0xc0 drivers/net/wireguard/timers.c:215
 wg_packet_create_data_done drivers/net/wireguard/send.c:247 [inline]
 wg_packet_tx_worker+0x13f/0x780 drivers/net/wireguard/send.c:276
 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600
 worker_thread+0x687/0x1110 kernel/workqueue.c:2751
 kthread+0x33a/0x430 kernel/kthread.c:389
 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>

Allocated by task 15218:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383
 kasan_kmalloc include/linux/kasan.h:196 [inline]
 __do_kmalloc_node mm/slab_common.c:1024 [inline]
 __kmalloc_node_track_caller+0x61/0x100 mm/slab_common.c:1044
 kmalloc_reserve+0xef/0x270 net/core/skbuff.c:575
 __alloc_skb+0x12b/0x330 net/core/skbuff.c:644
 alloc_skb include/linux/skbuff.h:1289 [inline]
 nlmsg_new include/net/netlink.h:1003 [inline]
 rtmsg_ifinfo_build_skb+0x7d/0x270 net/core/rtnetlink.c:4014
 unregister_netdevice_many_notify+0x90c/0x1a20 net/core/dev.c:10912
 ip_tunnel_delete_nets+0x2bb/0x3a0 net/ipv4/ip_tunnel.c:1144
 ops_exit_list+0x125/0x170 net/core/net_namespace.c:175
 setup_net+0x64d/0xa40 net/core/net_namespace.c:362
 copy_net_ns+0x2fa/0x670 net/core/net_namespace.c:491
 create_new_namespaces+0x3ea/0xb10 kernel/nsproxy.c:110
 copy_namespaces+0x40e/0x4f0 kernel/nsproxy.c:179
 copy_process+0x31d3/0x7400 kernel/fork.c:2515
 kernel_clone+0xfd/0x930 kernel/fork.c:2920
 __do_sys_clone+0xba/0x100 kernel/fork.c:3063
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Last potentially related work creation:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492
 __call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2653
 netlink_release+0xf0d/0x2000 net/netlink/af_netlink.c:833
 __sock_release+0xcd/0x290 net/socket.c:654
 sock_close+0x1c/0x20 net/socket.c:1386
 __fput+0x3fd/0xac0 fs/file_table.c:384
 task_work_run+0x14d/0x240 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x210/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297
 do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Second to last potentially related work creation:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492
 kvfree_call_rcu+0x70/0xbe0 kernel/rcu/tree.c:3372
 tcx_entry_free include/net/tcx.h:96 [inline]
 ingress_destroy+0x39f/0x520 net/sched/sch_ingress.c:127
 qdisc_create+0xa57/0x10a0 net/sched/sch_api.c:1360
 tc_modify_qdisc+0xab3/0x1bf0 net/sched/sch_api.c:1703
 rtnetlink_rcv_msg+0x439/0xd30 net/core/rtnetlink.c:6423
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2575
 netlink_unicast_kernel net/netlink/af_netlink.c:1344 [inline]
 netlink_unicast+0x539/0x800 net/netlink/af_netlink.c:1370
 netlink_sendmsg+0x93c/0xe40 net/netlink/af_netlink.c:1939
 sock_sendmsg_nosec net/socket.c:725 [inline]
 sock_sendmsg+0xd9/0x180 net/socket.c:748
 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2494
 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2548
 __sys_sendmsg+0x117/0x1e0 net/socket.c:2577
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff888021c38000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 520 bytes inside of
 freed 2048-byte region [ffff888021c38000, ffff888021c38800)

The buggy address belongs to the physical page:
page:ffffea0000870e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888021c3a000 pfn:0x21c38
head:ffffea0000870e00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000010200 ffff888012842000 ffffea00009dd210 ffffea0001147c10
raw: ffff888021c3a000 0000000000080003 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4783, tgid 4783 (kworker/1:3), ts 166866085825, free_ts 165062772568
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2d2/0x350 mm/page_alloc.c:1569
 prep_new_page mm/page_alloc.c:1576 [inline]
 get_page_from_freelist+0x10d7/0x31b0 mm/page_alloc.c:3256
 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4512
 alloc_pages+0x1a9/0x270 mm/mempolicy.c:2279
 alloc_slab_page mm/slub.c:1870 [inline]
 allocate_slab+0x24e/0x380 mm/slub.c:2017
 new_slab mm/slub.c:2070 [inline]
 ___slab_alloc+0x8bc/0x1570 mm/slub.c:3223
 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322
 __slab_alloc_node mm/slub.c:3375 [inline]
 slab_alloc_node mm/slub.c:3468 [inline]
 __kmem_cache_alloc_node+0x137/0x350 mm/slub.c:3517
 __do_kmalloc_node mm/slab_common.c:1023 [inline]
 __kmalloc_node_track_caller+0x50/0x100 mm/slab_common.c:1044
 kmalloc_reserve+0xef/0x270 net/core/skbuff.c:575
 __alloc_skb+0x12b/0x330 net/core/skbuff.c:644
 alloc_skb include/linux/skbuff.h:1289 [inline]
 alloc_skb_with_frags+0x9d/0x700 net/core/skbuff.c:6233
 sock_alloc_send_pskb+0x7c8/0x950 net/core/sock.c:2773
 sock_alloc_send_skb include/net/sock.h:1871 [inline]
 mld_newpack.isra.0+0x1ee/0x790 net/ipv6/mcast.c:1746
 add_grhead+0x295/0x340 net/ipv6/mcast.c:1849
 add_grec+0x10bb/0x1680 net/ipv6/mcast.c:1987
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1160 [inline]
 free_unref_page_prepare+0x508/0xb90 mm/page_alloc.c:2383
 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2478
 qlink_free mm/kasan/quarantine.c:166 [inline]
 qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185
 kasan_quarantine_reduce+0x18b/0x1d0 mm/kasan/quarantine.c:292
 __kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook mm/slab.h:762 [inline]
 slab_alloc_node mm/slub.c:3478 [inline]
 __kmem_cache_alloc_node+0x19b/0x350 mm/slub.c:3517
 kmalloc_trace+0x25/0xe0 mm/slab_common.c:1115
 kmalloc include/linux/slab.h:599 [inline]
 kzalloc include/linux/slab.h:720 [inline]
 kset_create lib/kobject.c:953 [inline]
 kset_create_and_add+0x4d/0x190 lib/kobject.c:996
 register_queue_kobjects net/core/net-sysfs.c:1794 [inline]
 netdev_register_kobject+0x1c5/0x3f0 net/core/net-sysfs.c:2047
 register_netdevice+0xd4c/0x1630 net/core/dev.c:10108
 register_vlan_dev+0x36a/0x930 net/8021q/vlan.c:179
 vlan_newlink+0x439/0x6d0 net/8021q/vlan_netlink.c:191
 rtnl_newlink_create net/core/rtnetlink.c:3471 [inline]
 __rtnl_newlink+0x115e/0x18c0 net/core/rtnetlink.c:3688
 rtnl_newlink+0x67/0xa0 net/core/rtnetlink.c:3701
 rtnetlink_rcv_msg+0x439/0xd30 net/core/rtnetlink.c:6423
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2575

Memory state around the buggy address:
 ffff888021c38100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888021c38180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888021c38200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff888021c38280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888021c38300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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