==================================================================
BUG: KASAN: double-free in slab_free mm/slub.c:3539 [inline]
BUG: KASAN: double-free in kfree+0xe2/0x580 mm/slub.c:4567

CPU: 0 PID: 3698 Comm: kworker/0:8 Not tainted 6.0.0-syzkaller-03015-g2bca25eaeba6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Workqueue: events mptcp_worker
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/0x719 mm/kasan/report.c:433
 kasan_report_invalid_free+0x81/0x190 mm/kasan/report.c:462
 ____kasan_slab_free+0x18b/0x1c0 mm/kasan/common.c:356
 kasan_slab_free include/linux/kasan.h:200 [inline]
 slab_free_hook mm/slub.c:1759 [inline]
 slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1785
 slab_free mm/slub.c:3539 [inline]
 kfree+0xe2/0x580 mm/slub.c:4567
 tcp_disconnect+0x980/0x1e20 net/ipv4/tcp.c:3145
 __mptcp_close_ssk+0x5ca/0x7e0 net/mptcp/protocol.c:2327
 mptcp_do_fastclose net/mptcp/protocol.c:2592 [inline]
 mptcp_worker+0x78c/0xff0 net/mptcp/protocol.c:2627
 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
 </TASK>

Allocated by task 57:
 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+0xa9/0xd0 mm/kasan/common.c:525
 kmalloc_array include/linux/slab.h:640 [inline]
 kcalloc include/linux/slab.h:671 [inline]
 tcp_cdg_init+0x10d/0x170 net/ipv4/tcp_cdg.c:380
 tcp_init_congestion_control+0xab/0x550 net/ipv4/tcp_cong.c:193
 tcp_init_transfer+0xccf/0xf00 net/ipv4/tcp_input.c:6045
 tcp_finish_connect+0x1cc/0x610 net/ipv4/tcp_input.c:6063
 tcp_rcv_synsent_state_process net/ipv4/tcp_input.c:6285 [inline]
 tcp_rcv_state_process+0xcb9/0x4990 net/ipv4/tcp_input.c:6488
 tcp_v6_do_rcv+0x3fc/0x13c0 net/ipv6/tcp_ipv6.c:1525
 tcp_v6_rcv+0x2e8e/0x3830 net/ipv6/tcp_ipv6.c:1759
 ip6_protocol_deliver_rcu+0x2db/0x1950 net/ipv6/ip6_input.c:439
 ip6_input_finish+0x14c/0x2c0 net/ipv6/ip6_input.c:484
 NF_HOOK include/linux/netfilter.h:302 [inline]
 NF_HOOK include/linux/netfilter.h:296 [inline]
 ip6_input+0x9c/0xd0 net/ipv6/ip6_input.c:493
 dst_input include/net/dst.h:455 [inline]
 ip6_rcv_finish+0x193/0x2c0 net/ipv6/ip6_input.c:79
 ip_sabotage_in net/bridge/br_netfilter_hooks.c:874 [inline]
 ip_sabotage_in+0x1fa/0x260 net/bridge/br_netfilter_hooks.c:865
 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
 nf_hook_slow+0xc5/0x1f0 net/netfilter/core.c:614
 nf_hook.constprop.0+0x3ac/0x650 include/linux/netfilter.h:257
 NF_HOOK include/linux/netfilter.h:300 [inline]
 ipv6_rcv+0x9e/0x380 net/ipv6/ip6_input.c:309
 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5485
 __netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5599
 netif_receive_skb_internal net/core/dev.c:5685 [inline]
 netif_receive_skb+0x12f/0x8d0 net/core/dev.c:5744
 NF_HOOK include/linux/netfilter.h:302 [inline]
 NF_HOOK include/linux/netfilter.h:296 [inline]
 br_pass_frame_up+0x303/0x410 net/bridge/br_input.c:68
 br_handle_frame_finish+0x909/0x1aa0 net/bridge/br_input.c:199
 br_nf_hook_thresh+0x2f8/0x3d0 net/bridge/br_netfilter_hooks.c:1041
 br_nf_pre_routing_finish_ipv6+0x695/0xef0 net/bridge/br_netfilter_ipv6.c:207
 NF_HOOK include/linux/netfilter.h:302 [inline]
 br_nf_pre_routing_ipv6+0x417/0x7c0 net/bridge/br_netfilter_ipv6.c:237
 br_nf_pre_routing+0x1496/0x1fe0 net/bridge/br_netfilter_hooks.c:507
 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
 nf_hook_bridge_pre net/bridge/br_input.c:255 [inline]
 br_handle_frame+0x9c9/0x12d0 net/bridge/br_input.c:399
 __netif_receive_skb_core+0x9fe/0x38f0 net/core/dev.c:5379
 __netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5483
 __netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5599
 process_backlog+0x3a0/0x7c0 net/core/dev.c:5927
 __napi_poll+0xb3/0x6d0 net/core/dev.c:6494
 napi_poll net/core/dev.c:6561 [inline]
 net_rx_action+0x9c1/0xd90 net/core/dev.c:6672
 __do_softirq+0x1d0/0x9c8 kernel/softirq.c:571

Freed by task 16:
 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+0x166/0x1c0 mm/kasan/common.c:329
 kasan_slab_free include/linux/kasan.h:200 [inline]
 slab_free_hook mm/slub.c:1759 [inline]
 slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1785
 slab_free mm/slub.c:3539 [inline]
 kfree+0xe2/0x580 mm/slub.c:4567
 tcp_cleanup_congestion_control+0x70/0x120 net/ipv4/tcp_cong.c:226
 tcp_v4_destroy_sock+0xdd/0x750 net/ipv4/tcp_ipv4.c:2254
 tcp_v6_destroy_sock+0x11/0x20 net/ipv6/tcp_ipv6.c:1969
 inet_csk_destroy_sock+0x196/0x440 net/ipv4/inet_connection_sock.c:1157
 tcp_done+0x23b/0x340 net/ipv4/tcp.c:4649
 tcp_rcv_state_process+0x3fc8/0x4990 net/ipv4/tcp_input.c:6607
 tcp_v6_do_rcv+0x3fc/0x13c0 net/ipv6/tcp_ipv6.c:1525
 tcp_v6_rcv+0x2e8e/0x3830 net/ipv6/tcp_ipv6.c:1759
 ip6_protocol_deliver_rcu+0x2db/0x1950 net/ipv6/ip6_input.c:439
 ip6_input_finish+0x14c/0x2c0 net/ipv6/ip6_input.c:484
 NF_HOOK include/linux/netfilter.h:302 [inline]
 NF_HOOK include/linux/netfilter.h:296 [inline]
 ip6_input+0x9c/0xd0 net/ipv6/ip6_input.c:493
 dst_input include/net/dst.h:455 [inline]
 ip6_rcv_finish+0x193/0x2c0 net/ipv6/ip6_input.c:79
 ip_sabotage_in net/bridge/br_netfilter_hooks.c:874 [inline]
 ip_sabotage_in+0x1fa/0x260 net/bridge/br_netfilter_hooks.c:865
 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
 nf_hook_slow+0xc5/0x1f0 net/netfilter/core.c:614
 nf_hook.constprop.0+0x3ac/0x650 include/linux/netfilter.h:257
 NF_HOOK include/linux/netfilter.h:300 [inline]
 ipv6_rcv+0x9e/0x380 net/ipv6/ip6_input.c:309
 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5485
 __netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5599
 netif_receive_skb_internal net/core/dev.c:5685 [inline]
 netif_receive_skb+0x12f/0x8d0 net/core/dev.c:5744
 NF_HOOK include/linux/netfilter.h:302 [inline]
 NF_HOOK include/linux/netfilter.h:296 [inline]
 br_pass_frame_up+0x303/0x410 net/bridge/br_input.c:68
 br_handle_frame_finish+0x909/0x1aa0 net/bridge/br_input.c:199
 br_nf_hook_thresh+0x2f8/0x3d0 net/bridge/br_netfilter_hooks.c:1041
 br_nf_pre_routing_finish_ipv6+0x695/0xef0 net/bridge/br_netfilter_ipv6.c:207
 NF_HOOK include/linux/netfilter.h:302 [inline]
 br_nf_pre_routing_ipv6+0x417/0x7c0 net/bridge/br_netfilter_ipv6.c:237
 br_nf_pre_routing+0x1496/0x1fe0 net/bridge/br_netfilter_hooks.c:507
 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
 nf_hook_bridge_pre net/bridge/br_input.c:255 [inline]
 br_handle_frame+0x9c9/0x12d0 net/bridge/br_input.c:399
 __netif_receive_skb_core+0x9fe/0x38f0 net/core/dev.c:5379
 __netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5483
 __netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5599
 process_backlog+0x3a0/0x7c0 net/core/dev.c:5927
 __napi_poll+0xb3/0x6d0 net/core/dev.c:6494
 napi_poll net/core/dev.c:6561 [inline]
 net_rx_action+0x9c1/0xd90 net/core/dev.c:6672
 __do_softirq+0x1d0/0x9c8 kernel/softirq.c:571

Last potentially related work creation:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
 __kasan_record_aux_stack+0xbe/0xd0 mm/kasan/generic.c:348
 kvfree_call_rcu+0x74/0x8f0 kernel/rcu/tree.c:3341
 ip6addrlbl_net_exit+0xb2/0x180 net/ipv6/addrlabel.c:347
 ops_exit_list+0xb0/0x170 net/core/net_namespace.c:162
 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:594
 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

Second to last potentially related work creation:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
 __kasan_record_aux_stack+0xbe/0xd0 mm/kasan/generic.c:348
 call_rcu+0x99/0x790 kernel/rcu/tree.c:2796
 mpls_dev_notify+0x61b/0x9b0 net/mpls/af_mpls.c:1655
 notifier_call_chain+0xb5/0x200 kernel/notifier.c:87
 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1945
 call_netdevice_notifiers_extack net/core/dev.c:1983 [inline]
 call_netdevice_notifiers net/core/dev.c:1997 [inline]
 unregister_netdevice_many+0xa69/0x1980 net/core/dev.c:10843
 ip_tunnel_delete_nets+0x39f/0x5b0 net/ipv4/ip_tunnel.c:1126
 ops_exit_list+0x125/0x170 net/core/net_namespace.c:167
 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:594
 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

The buggy address belongs to the object at ffff88801c3a1c80
 which belongs to the cache kmalloc-64 of size 64
The buggy address is located 0 bytes inside of
 64-byte region [ffff88801c3a1c80, ffff88801c3a1cc0)

The buggy address belongs to the physical page:
page:ffffea000070e840 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1c3a1
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000200 0000000000000000 dead000000000001 ffff888011841640
raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 47, tgid 47 (kworker/u4:3), ts 6836471152, free_ts 0
 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:5549
 alloc_pages+0x1a6/0x270 mm/mempolicy.c:2270
 alloc_slab_page mm/slub.c:1829 [inline]
 allocate_slab+0x27e/0x3d0 mm/slub.c:1974
 new_slab mm/slub.c:2034 [inline]
 ___slab_alloc+0x84f/0xe80 mm/slub.c:3036
 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3123
 slab_alloc_node mm/slub.c:3214 [inline]
 slab_alloc mm/slub.c:3256 [inline]
 __kmalloc+0x32b/0x340 mm/slub.c:4425
 kmalloc include/linux/slab.h:605 [inline]
 kzalloc include/linux/slab.h:733 [inline]
 lsm_task_alloc security/security.c:615 [inline]
 security_task_alloc+0x10b/0x250 security/security.c:1655
 copy_process+0x23d5/0x7090 kernel/fork.c:2236
 kernel_clone+0xe7/0xab0 kernel/fork.c:2671
 user_mode_thread+0xad/0xe0 kernel/fork.c:2740
 call_usermodehelper_exec_work kernel/umh.c:174 [inline]
 call_usermodehelper_exec_work+0xcc/0x180 kernel/umh.c:160
 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
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88801c3a1b80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff88801c3a1c00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
>ffff88801c3a1c80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
                   ^
 ffff88801c3a1d00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
 ffff88801c3a1d80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
==================================================================