==================================================================
BUG: KASAN: use-after-free in mini_qdisc_pair_swap+0x1b9/0x1f0 net/sched/sch_generic.c:1577
Write of size 8 at addr ffff8880200df308 by task syz-executor.1/18597

CPU: 1 PID: 18597 Comm: syz-executor.1 Not tainted 5.19.0-rc2-syzkaller-00410-g9776fe0f424b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 print_address_description.constprop.0.cold+0xeb/0x495 mm/kasan/report.c:313
 print_report mm/kasan/report.c:429 [inline]
 kasan_report.cold+0xf4/0x1c6 mm/kasan/report.c:491
 mini_qdisc_pair_swap+0x1b9/0x1f0 net/sched/sch_generic.c:1577
 tcf_chain_head_change_item net/sched/cls_api.c:389 [inline]
 tcf_chain0_head_change.isra.0+0xb9/0x120 net/sched/cls_api.c:403
 tcf_chain_tp_insert net/sched/cls_api.c:1677 [inline]
 tcf_chain_tp_insert_unique net/sched/cls_api.c:1726 [inline]
 tc_new_tfilter+0x1d5b/0x2200 net/sched/cls_api.c:2107
 rtnetlink_rcv_msg+0x946/0xc90 net/core/rtnetlink.c:6080
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2501
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:734
 ____sys_sendmsg+0x334/0x810 net/socket.c:2489
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2543
 __sys_sendmmsg+0x195/0x470 net/socket.c:2629
 __do_sys_sendmmsg net/socket.c:2658 [inline]
 __se_sys_sendmmsg net/socket.c:2655 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2655
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7fec68e89109
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fec6a073168 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007fec68f9c100 RCX: 00007fec68e89109
RDX: 040000000000009f RSI: 00000000200002c0 RDI: 0000000000000006
RBP: 00007fec68ee305d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd62f14d8f R14: 00007fec6a073300 R15: 0000000000022000
 </TASK>

Allocated by task 18594:
 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:436 [inline]
 ____kasan_kmalloc mm/kasan/common.c:515 [inline]
 ____kasan_kmalloc mm/kasan/common.c:474 [inline]
 __kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:524
 kmalloc_node include/linux/slab.h:623 [inline]
 kzalloc_node include/linux/slab.h:744 [inline]
 qdisc_alloc+0xac/0xa10 net/sched/sch_generic.c:942
 qdisc_create.constprop.0+0xce/0x10f0 net/sched/sch_api.c:1211
 tc_modify_qdisc+0x4c5/0x1a00 net/sched/sch_api.c:1660
 rtnetlink_rcv_msg+0x43a/0xc90 net/core/rtnetlink.c:6089
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2501
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:734
 ____sys_sendmsg+0x334/0x810 net/socket.c:2489
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2543
 __sys_sendmmsg+0x195/0x470 net/socket.c:2629
 __do_sys_sendmmsg net/socket.c:2658 [inline]
 __se_sys_sendmmsg net/socket.c:2655 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2655
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

Freed by task 17742:
 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:366 [inline]
 ____kasan_slab_free+0x166/0x1a0 mm/kasan/common.c:328
 kasan_slab_free include/linux/kasan.h:200 [inline]
 slab_free_hook mm/slub.c:1727 [inline]
 slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1753
 slab_free mm/slub.c:3507 [inline]
 kfree+0xd6/0x4d0 mm/slub.c:4555
 rcu_do_batch kernel/rcu/tree.c:2578 [inline]
 rcu_core+0x7b1/0x1880 kernel/rcu/tree.c:2838
 __do_softirq+0x29b/0x9c2 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
 call_rcu+0x99/0x790 kernel/rcu/tree.c:3126
 qdisc_put_unlocked+0x6f/0x90 net/sched/sch_generic.c:1102
 tcf_block_release+0x86/0x90 net/sched/cls_api.c:1255
 tc_new_tfilter+0xa46/0x2200 net/sched/cls_api.c:2169
 rtnetlink_rcv_msg+0x946/0xc90 net/core/rtnetlink.c:6080
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2501
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:734
 ____sys_sendmsg+0x334/0x810 net/socket.c:2489
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2543
 __sys_sendmmsg+0x195/0x470 net/socket.c:2629
 __do_sys_sendmmsg net/socket.c:2658 [inline]
 __se_sys_sendmmsg net/socket.c:2655 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2655
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

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:3126
 sctp_transport_destroy net/sctp/transport.c:171 [inline]
 sctp_transport_put+0x11d/0x180 net/sctp/transport.c:483
 sctp_association_free+0x4cc/0x7d0 net/sctp/associola.c:382
 sctp_cmd_delete_tcb net/sctp/sm_sideeffect.c:944 [inline]
 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1328 [inline]
 sctp_side_effects net/sctp/sm_sideeffect.c:1199 [inline]
 sctp_do_sm+0x3855/0x4f00 net/sctp/sm_sideeffect.c:1170
 sctp_assoc_bh_rcv+0x386/0x6c0 net/sctp/associola.c:1054
 sctp_inq_push+0x1d2/0x270 net/sctp/inqueue.c:80
 sctp_backlog_rcv+0x196/0x5a0 net/sctp/input.c:346
 sk_backlog_rcv include/net/sock.h:1047 [inline]
 __release_sock+0x134/0x3b0 net/core/sock.c:2850
 release_sock+0x54/0x1b0 net/core/sock.c:3405
 sctp_wait_for_connect+0x1cb/0x5d0 net/sctp/socket.c:9310
 __sctp_connect+0x9a6/0xc30 net/sctp/socket.c:1245
 sctp_connect net/sctp/socket.c:4805 [inline]
 sctp_inet_connect+0x15e/0x200 net/sctp/socket.c:4820
 __sys_connect_file+0x14f/0x190 net/socket.c:1976
 __sys_connect+0x161/0x190 net/socket.c:1993
 __do_sys_connect net/socket.c:2003 [inline]
 __se_sys_connect net/socket.c:2000 [inline]
 __x64_sys_connect+0x6f/0xb0 net/socket.c:2000
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

The buggy address belongs to the object at ffff8880200df000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 776 bytes inside of
 1024-byte region [ffff8880200df000, ffff8880200df400)

The buggy address belongs to the physical page:
page:ffffea0000803600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x200d8
head:ffffea0000803600 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 dead000000000100 dead000000000122 ffff888011841dc0
raw: 0000000000000000 0000000000100010 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 0x1d2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 22, tgid 22 (ksoftirqd/1), ts 255939159103, free_ts 251547948902
 prep_new_page mm/page_alloc.c:2456 [inline]
 get_page_from_freelist+0x1290/0x3b70 mm/page_alloc.c:4198
 __alloc_pages+0x1c7/0x510 mm/page_alloc.c:5426
 alloc_pages+0x1aa/0x310 mm/mempolicy.c:2272
 alloc_slab_page mm/slub.c:1797 [inline]
 allocate_slab+0x26c/0x3c0 mm/slub.c:1942
 new_slab mm/slub.c:2002 [inline]
 ___slab_alloc+0x985/0xd90 mm/slub.c:3002
 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3089
 slab_alloc_node mm/slub.c:3180 [inline]
 __kmalloc_node_track_caller+0x2cb/0x360 mm/slub.c:4950
 kmalloc_reserve net/core/skbuff.c:358 [inline]
 pskb_expand_head+0x15e/0x1070 net/core/skbuff.c:1700
 ___pskb_trim+0x939/0x1070 net/core/skbuff.c:2113
 __pskb_trim include/linux/skbuff.h:2937 [inline]
 pskb_trim include/linux/skbuff.h:2944 [inline]
 sk_filter_trim_cap+0x892/0x9a0 net/core/filter.c:153
 tcp_v4_rcv+0x285a/0x3700 net/ipv4/tcp_ipv4.c:2051
 ip_protocol_deliver_rcu+0xa3/0x7c0 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x2e8/0x4c0 net/ipv4/ip_input.c:233
 NF_HOOK include/linux/netfilter.h:307 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 ip_local_deliver+0x1aa/0x200 net/ipv4/ip_input.c:254
 dst_input include/net/dst.h:461 [inline]
 ip_rcv_finish+0x1cb/0x2f0 net/ipv4/ip_input.c:437
 NF_HOOK include/linux/netfilter.h:307 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 ip_rcv+0xaa/0xd0 net/ipv4/ip_input.c:557
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1371 [inline]
 free_pcp_prepare+0x549/0xd20 mm/page_alloc.c:1421
 free_unref_page_prepare mm/page_alloc.c:3343 [inline]
 free_unref_page+0x19/0x6a0 mm/page_alloc.c:3438
 __unfreeze_partials+0x17c/0x1a0 mm/slub.c:2521
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0xa2/0xc0 mm/kasan/common.c:446
 kasan_slab_alloc include/linux/kasan.h:224 [inline]
 slab_post_alloc_hook mm/slab.h:750 [inline]
 slab_alloc_node mm/slub.c:3214 [inline]
 slab_alloc mm/slub.c:3222 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3229 [inline]
 kmem_cache_alloc+0x204/0x3b0 mm/slub.c:3239
 kmem_cache_zalloc include/linux/slab.h:723 [inline]
 jbd2_alloc_handle include/linux/jbd2.h:1597 [inline]
 new_handle fs/jbd2/transaction.c:476 [inline]
 jbd2__journal_start+0x191/0x930 fs/jbd2/transaction.c:503
 __ext4_journal_start_sb+0x3a8/0x4a0 fs/ext4/ext4_jbd2.c:105
 __ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
 ext4_unlink+0x2f4/0x9e0 fs/ext4/namei.c:3250
 vfs_unlink+0x351/0x920 fs/namei.c:4192
 do_unlinkat+0x3cc/0x650 fs/namei.c:4260
 __do_sys_unlink fs/namei.c:4308 [inline]
 __se_sys_unlink fs/namei.c:4306 [inline]
 __x64_sys_unlink+0xc6/0x110 fs/namei.c:4306
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

Memory state around the buggy address:
 ffff8880200df200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880200df280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880200df300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff8880200df380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880200df400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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