==================================================================
BUG: KASAN: slab-use-after-free in tcp_can_ingest net/ipv4/tcp_input.c:4896 [inline]
BUG: KASAN: slab-use-after-free in tcp_prune_ofo_queue+0x37e/0x6e0 net/ipv4/tcp_input.c:5520
Read of size 4 at addr ffff8880775c6c20 by task syz.0.14/5992

CPU: 0 UID: 0 PID: 5992 Comm: syz.0.14 Not tainted 6.16.0-rc5-syzkaller-01444-g55e8757c6962 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:408 [inline]
 print_report+0xd2/0x2b0 mm/kasan/report.c:521
 kasan_report+0x118/0x150 mm/kasan/report.c:634
 tcp_can_ingest net/ipv4/tcp_input.c:4896 [inline]
 tcp_prune_ofo_queue+0x37e/0x6e0 net/ipv4/tcp_input.c:5520
 tcp_prune_queue net/ipv4/tcp_input.c:5575 [inline]
 tcp_try_rmem_schedule+0xb6b/0x1830 net/ipv4/tcp_input.c:4907
 tcp_data_queue_ofo net/ipv4/tcp_input.c:4929 [inline]
 tcp_data_queue+0x2223/0x6380 net/ipv4/tcp_input.c:5272
 tcp_rcv_established+0xf9e/0x1eb0 net/ipv4/tcp_input.c:6208
 tcp_v4_do_rcv+0xa23/0xce0 net/ipv4/tcp_ipv4.c:1925
 sk_backlog_rcv include/net/sock.h:1148 [inline]
 __release_sock+0x21c/0x350 net/core/sock.c:3188
 release_sock+0x5f/0x1f0 net/core/sock.c:3742
 tcp_sendmsg+0x39/0x50 net/ipv4/tcp.c:1394
 sock_sendmsg_nosec net/socket.c:714 [inline]
 __sock_sendmsg+0x19c/0x270 net/socket.c:729
 __sys_sendto+0x3bd/0x520 net/socket.c:2228
 __do_sys_sendto net/socket.c:2235 [inline]
 __se_sys_sendto net/socket.c:2231 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2231
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6ac9d8e929
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6acabc7038 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f6ac9fb5fa0 RCX: 00007f6ac9d8e929
RDX: 000000000000059a RSI: 0000200000000580 RDI: 0000000000000003
RBP: 00007f6ac9e10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000010008095 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f6ac9fb5fa0 R15: 00007ffd278fa568
 </TASK>

Allocated by task 5992:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:319 [inline]
 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:345
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4148 [inline]
 slab_alloc_node mm/slub.c:4197 [inline]
 kmem_cache_alloc_node_noprof+0x1bb/0x3c0 mm/slub.c:4249
 __alloc_skb+0x112/0x2d0 net/core/skbuff.c:659
 alloc_skb include/linux/skbuff.h:1336 [inline]
 tcp_collapse+0xd78/0x1d80 net/ipv4/tcp_input.c:5387
 tcp_collapse_ofo_queue net/ipv4/tcp_input.c:5463 [inline]
 tcp_prune_queue net/ipv4/tcp_input.c:5562 [inline]
 tcp_try_rmem_schedule+0x6a4/0x1830 net/ipv4/tcp_input.c:4907
 tcp_data_queue_ofo net/ipv4/tcp_input.c:4929 [inline]
 tcp_data_queue+0x2223/0x6380 net/ipv4/tcp_input.c:5272
 tcp_rcv_established+0xf9e/0x1eb0 net/ipv4/tcp_input.c:6208
 tcp_v4_do_rcv+0xa23/0xce0 net/ipv4/tcp_ipv4.c:1925
 sk_backlog_rcv include/net/sock.h:1148 [inline]
 __release_sock+0x21c/0x350 net/core/sock.c:3188
 release_sock+0x5f/0x1f0 net/core/sock.c:3742
 tcp_sendmsg+0x39/0x50 net/ipv4/tcp.c:1394
 sock_sendmsg_nosec net/socket.c:714 [inline]
 __sock_sendmsg+0x19c/0x270 net/socket.c:729
 __sys_sendto+0x3bd/0x520 net/socket.c:2228
 __do_sys_sendto net/socket.c:2235 [inline]
 __se_sys_sendto net/socket.c:2231 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2231
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 5992:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2381 [inline]
 slab_free mm/slub.c:4643 [inline]
 kmem_cache_free+0x18f/0x400 mm/slub.c:4745
 tcp_prune_ofo_queue+0x198/0x6e0 net/ipv4/tcp_input.c:5517
 tcp_prune_queue net/ipv4/tcp_input.c:5575 [inline]
 tcp_try_rmem_schedule+0xb6b/0x1830 net/ipv4/tcp_input.c:4907
 tcp_data_queue_ofo net/ipv4/tcp_input.c:4929 [inline]
 tcp_data_queue+0x2223/0x6380 net/ipv4/tcp_input.c:5272
 tcp_rcv_established+0xf9e/0x1eb0 net/ipv4/tcp_input.c:6208
 tcp_v4_do_rcv+0xa23/0xce0 net/ipv4/tcp_ipv4.c:1925
 sk_backlog_rcv include/net/sock.h:1148 [inline]
 __release_sock+0x21c/0x350 net/core/sock.c:3188
 release_sock+0x5f/0x1f0 net/core/sock.c:3742
 tcp_sendmsg+0x39/0x50 net/ipv4/tcp.c:1394
 sock_sendmsg_nosec net/socket.c:714 [inline]
 __sock_sendmsg+0x19c/0x270 net/socket.c:729
 __sys_sendto+0x3bd/0x520 net/socket.c:2228
 __do_sys_sendto net/socket.c:2235 [inline]
 __se_sys_sendto net/socket.c:2231 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2231
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff8880775c6b40
 which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 224 bytes inside of
 freed 240-byte region [ffff8880775c6b40, ffff8880775c6c30)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x775c6
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000000 ffff888141692a00 dead000000000122 0000000000000000
raw: 0000000000000000 00000000000c000c 00000000f5000000 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 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5852, tgid 5852 (syz-executor), ts 84785033961, free_ts 84782354936
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
 prep_new_page mm/page_alloc.c:1712 [inline]
 get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419
 alloc_slab_page mm/slub.c:2451 [inline]
 allocate_slab+0x8a/0x3b0 mm/slub.c:2619
 new_slab mm/slub.c:2673 [inline]
 ___slab_alloc+0xbfc/0x1480 mm/slub.c:3859
 __slab_alloc mm/slub.c:3949 [inline]
 __slab_alloc_node mm/slub.c:4024 [inline]
 slab_alloc_node mm/slub.c:4185 [inline]
 kmem_cache_alloc_node_noprof+0x280/0x3c0 mm/slub.c:4249
 __alloc_skb+0x112/0x2d0 net/core/skbuff.c:659
 alloc_skb include/linux/skbuff.h:1336 [inline]
 nlmsg_new include/net/netlink.h:1055 [inline]
 rtmsg_ifinfo_build_skb+0x84/0x260 net/core/rtnetlink.c:4392
 rtmsg_ifinfo_event net/core/rtnetlink.c:4434 [inline]
 rtmsg_ifinfo+0x8c/0x1a0 net/core/rtnetlink.c:4443
 __dev_notify_flags+0xf4/0x2e0 net/core/dev.c:9556
 netif_change_flags+0xe8/0x1a0 net/core/dev.c:9589
 dev_change_flags+0x130/0x260 net/core/dev_api.c:68
 devinet_ioctl+0xbb4/0x1b50 net/ipv4/devinet.c:1200
 inet_ioctl+0x3c0/0x4c0 net/ipv4/af_inet.c:1001
 sock_do_ioctl+0xdc/0x300 net/socket.c:1238
page last free pid 5849 tgid 5849 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1248 [inline]
 __free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
 ___free_pages_bulk mm/kasan/shadow.c:332 [inline]
 __kasan_populate_vmalloc mm/kasan/shadow.c:375 [inline]
 kasan_populate_vmalloc+0x118/0x1a0 mm/kasan/shadow.c:417
 alloc_vmap_area+0xd51/0x1490 mm/vmalloc.c:2084
 __get_vm_area_node+0x1f8/0x300 mm/vmalloc.c:3179
 __vmalloc_node_range_noprof+0x301/0x12f0 mm/vmalloc.c:3845
 __vmalloc_node_noprof mm/vmalloc.c:3948 [inline]
 vzalloc_noprof+0xb2/0xf0 mm/vmalloc.c:4022
 alloc_counters+0xd3/0x6d0 net/ipv4/netfilter/ip_tables.c:799
 copy_entries_to_user net/ipv4/netfilter/ip_tables.c:821 [inline]
 get_entries net/ipv4/netfilter/ip_tables.c:1022 [inline]
 do_ipt_get_ctl+0xaac/0x1180 net/ipv4/netfilter/ip_tables.c:1668
 nf_getsockopt+0x26b/0x290 net/netfilter/nf_sockopt.c:116
 ip_getsockopt+0x1c4/0x220 net/ipv4/ip_sockglue.c:1777
 do_sock_getsockopt+0x360/0x650 net/socket.c:2405
 __sys_getsockopt net/socket.c:2434 [inline]
 __do_sys_getsockopt net/socket.c:2441 [inline]
 __se_sys_getsockopt net/socket.c:2438 [inline]
 __x64_sys_getsockopt+0x1a5/0x250 net/socket.c:2438
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff8880775c6b00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
 ffff8880775c6b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880775c6c00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
                               ^
 ffff8880775c6c80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880775c6d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
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