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BUG: KASAN: use-after-free in mini_qdisc_pair_swap+0x1b9/0x1f0 net/sched/sch_generic.c:1573
Write of size 8 at addr ffff8880789bd308 by task syz-executor.5/4425

CPU: 1 PID: 4425 Comm: syz-executor.5 Not tainted 6.1.0-rc4-syzkaller-00356-g8f2975c2bb4c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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:284 [inline]
 print_report+0x15e/0x45d mm/kasan/report.c:395
 kasan_report+0xbb/0x1f0 mm/kasan/report.c:495
 mini_qdisc_pair_swap+0x1b9/0x1f0 net/sched/sch_generic.c:1573
 tcf_chain_head_change_item net/sched/cls_api.c:390 [inline]
 tcf_chain0_head_change.isra.0+0xb9/0x120 net/sched/cls_api.c:404
 tcf_chain_tp_insert net/sched/cls_api.c:1678 [inline]
 tcf_chain_tp_insert_unique net/sched/cls_api.c:1727 [inline]
 tc_new_tfilter+0x1d44/0x21f0 net/sched/cls_api.c:2105
 rtnetlink_rcv_msg+0x955/0xca0 net/core/rtnetlink.c:6082
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2540
 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+0x334/0x8c0 net/socket.c:2482
 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536
 __sys_sendmmsg+0x18b/0x460 net/socket.c:2622
 __do_sys_sendmmsg net/socket.c:2651 [inline]
 __se_sys_sendmmsg net/socket.c:2648 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2648
 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+0x63/0xcd
RIP: 0033:0x7fbc11c8b639
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:00007fbc129b5168 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007fbc11dac050 RCX: 00007fbc11c8b639
RDX: 040000000000009f RSI: 00000000200002c0 RDI: 0000000000000006
RBP: 00007fbc11ce67e1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbc11ecfb1f R14: 00007fbc129b5300 R15: 0000000000022000
 </TASK>

Allocated by task 4422:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45
 kasan_set_track+0x21/0x30 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:371 [inline]
 ____kasan_kmalloc mm/kasan/common.c:330 [inline]
 __kasan_kmalloc+0xa1/0xb0 mm/kasan/common.c:380
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slab_common.c:955 [inline]
 __kmalloc_node+0x59/0xc0 mm/slab_common.c:962
 kmalloc_node include/linux/slab.h:579 [inline]
 kzalloc_node include/linux/slab.h:700 [inline]
 qdisc_alloc+0xac/0xb00 net/sched/sch_generic.c:938
 qdisc_create+0xce/0x1170 net/sched/sch_api.c:1230
 tc_modify_qdisc+0x475/0x19a0 net/sched/sch_api.c:1672
 rtnetlink_rcv_msg+0x43a/0xca0 net/core/rtnetlink.c:6091
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2540
 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+0x334/0x8c0 net/socket.c:2482
 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536
 __sys_sendmmsg+0x18b/0x460 net/socket.c:2622
 __do_sys_sendmmsg net/socket.c:2651 [inline]
 __se_sys_sendmmsg net/socket.c:2648 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2648
 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+0x63/0xcd

Freed by task 9:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45
 kasan_set_track+0x21/0x30 mm/kasan/common.c:52
 kasan_save_free_info+0x2a/0x40 mm/kasan/generic.c:511
 ____kasan_slab_free mm/kasan/common.c:236 [inline]
 ____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200
 kasan_slab_free include/linux/kasan.h:177 [inline]
 slab_free_hook mm/slub.c:1724 [inline]
 slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1750
 slab_free mm/slub.c:3661 [inline]
 __kmem_cache_free+0xab/0x3b0 mm/slub.c:3674
 rcu_do_batch kernel/rcu/tree.c:2250 [inline]
 rcu_core+0x81f/0x1980 kernel/rcu/tree.c:2510
 __do_softirq+0x1f7/0xad8 kernel/softirq.c:571

Last potentially related work creation:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:481
 call_rcu+0x99/0x820 kernel/rcu/tree.c:2798
 qdisc_put_unlocked+0x6f/0x90 net/sched/sch_generic.c:1097
 tcf_block_release+0x86/0x90 net/sched/cls_api.c:1256
 tc_new_tfilter+0x9f0/0x21f0 net/sched/cls_api.c:2168
 rtnetlink_rcv_msg+0x955/0xca0 net/core/rtnetlink.c:6082
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2540
 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+0x334/0x8c0 net/socket.c:2482
 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536
 __sys_sendmmsg+0x18b/0x460 net/socket.c:2622
 __do_sys_sendmmsg net/socket.c:2651 [inline]
 __se_sys_sendmmsg net/socket.c:2648 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2648
 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+0x63/0xcd

The buggy address belongs to the object at ffff8880789bd000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 776 bytes inside of
 1024-byte region [ffff8880789bd000, ffff8880789bd400)

The buggy address belongs to the physical page:
page:ffffea0001e26e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880789be000 pfn:0x789b8
head:ffffea0001e26e00 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffffea0001cb8808 ffffea0001cbc008 ffff888011841dc0
raw: ffff8880789be000 000000000010000e 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 0xd2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3609, tgid 3607 (syz-fuzzer), ts 125282118033, free_ts 125264736005
 prep_new_page mm/page_alloc.c:2539 [inline]
 get_page_from_freelist+0x10b5/0x2d50 mm/page_alloc.c:4288
 __alloc_pages+0x1c7/0x5a0 mm/page_alloc.c:5555
 alloc_pages+0x1a6/0x270 mm/mempolicy.c:2285
 alloc_slab_page mm/slub.c:1794 [inline]
 allocate_slab+0x213/0x300 mm/slub.c:1939
 new_slab mm/slub.c:1992 [inline]
 ___slab_alloc+0xa91/0x1400 mm/slub.c:3180
 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3279
 slab_alloc_node mm/slub.c:3364 [inline]
 __kmem_cache_alloc_node+0x191/0x3e0 mm/slub.c:3437
 __do_kmalloc_node mm/slab_common.c:954 [inline]
 __kmalloc_node_track_caller+0x47/0xc0 mm/slab_common.c:975
 kmalloc_reserve net/core/skbuff.c:437 [inline]
 __alloc_skb+0xd9/0x2f0 net/core/skbuff.c:509
 alloc_skb include/linux/skbuff.h:1267 [inline]
 __tcp_send_ack.part.0+0x67/0x760 net/ipv4/tcp_output.c:3960
 __tcp_send_ack net/ipv4/tcp_output.c:3992 [inline]
 tcp_send_ack+0x7d/0xa0 net/ipv4/tcp_output.c:3992
 __tcp_cleanup_rbuf+0x356/0x470 net/ipv4/tcp.c:1617
 tcp_recvmsg_locked+0x72c/0x22c0 net/ipv4/tcp.c:2649
 tcp_recvmsg+0x113/0x620 net/ipv4/tcp.c:2679
 inet_recvmsg+0x110/0x5d0 net/ipv4/af_inet.c:861
 sock_recvmsg_nosec net/socket.c:995 [inline]
 sock_recvmsg net/socket.c:1013 [inline]
 sock_recvmsg net/socket.c:1009 [inline]
 sock_read_iter+0x344/0x470 net/socket.c:1086
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1459 [inline]
 free_pcp_prepare+0x65c/0xd90 mm/page_alloc.c:1509
 free_unref_page_prepare mm/page_alloc.c:3387 [inline]
 free_unref_page+0x19/0x4d0 mm/page_alloc.c:3483
 skb_free_frag include/linux/skbuff.h:3190 [inline]
 skb_free_head+0x96/0x110 net/core/skbuff.c:758
 skb_release_data+0x5f1/0x870 net/core/skbuff.c:789
 skb_release_all net/core/skbuff.c:854 [inline]
 napi_consume_skb net/core/skbuff.c:1111 [inline]
 napi_consume_skb+0x145/0x280 net/core/skbuff.c:1089
 skb_defer_free_flush net/core/dev.c:6646 [inline]
 net_rx_action+0x342/0xde0 net/core/dev.c:6667
 __do_softirq+0x1f7/0xad8 kernel/softirq.c:571

Memory state around the buggy address:
 ffff8880789bd200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880789bd280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880789bd300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff8880789bd380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880789bd400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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