==================================================================
BUG: KASAN: slab-out-of-bounds in selinux_sock security/selinux/include/objsec.h:207 [inline]
BUG: KASAN: slab-out-of-bounds in selinux_ip_output+0x1e0/0x1f0 security/selinux/hooks.c:5761
Read of size 8 at addr ffff8880257865f8 by task syz.4.1608/10942

CPU: 3 UID: 0 PID: 10942 Comm: syz.4.1608 Not tainted 6.13.0-rc1-syzkaller-00036-g5076001689e4 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:489
 kasan_report+0xd9/0x110 mm/kasan/report.c:602
 selinux_sock security/selinux/include/objsec.h:207 [inline]
 selinux_ip_output+0x1e0/0x1f0 security/selinux/hooks.c:5761
 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
 nf_hook_slow+0xbb/0x200 net/netfilter/core.c:626
 nf_hook+0x386/0x6d0 include/linux/netfilter.h:269
 __ip_local_out+0x339/0x640 net/ipv4/ip_output.c:119
 ip_local_out net/ipv4/ip_output.c:128 [inline]
 ip_send_skb net/ipv4/ip_output.c:1505 [inline]
 ip_push_pending_frames+0xa0/0x5b0 net/ipv4/ip_output.c:1525
 ip_send_unicast_reply+0xd0e/0x1650 net/ipv4/ip_output.c:1672
 tcp_v4_send_ack+0x976/0x13f0 net/ipv4/tcp_ipv4.c:1024
 tcp_v4_timewait_ack net/ipv4/tcp_ipv4.c:1077 [inline]
 tcp_v4_rcv+0x2f8e/0x4380 net/ipv4/tcp_ipv4.c:2428
 ip_protocol_deliver_rcu+0xba/0x4c0 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x316/0x570 net/ipv4/ip_input.c:233
 NF_HOOK include/linux/netfilter.h:314 [inline]
 NF_HOOK include/linux/netfilter.h:308 [inline]
 ip_local_deliver+0x18e/0x1f0 net/ipv4/ip_input.c:254
 dst_input include/net/dst.h:460 [inline]
 ip_rcv_finish net/ipv4/ip_input.c:447 [inline]
 NF_HOOK include/linux/netfilter.h:314 [inline]
 NF_HOOK include/linux/netfilter.h:308 [inline]
 ip_rcv+0x2c3/0x5d0 net/ipv4/ip_input.c:567
 __netif_receive_skb_one_core+0x199/0x1e0 net/core/dev.c:5672
 __netif_receive_skb+0x1d/0x160 net/core/dev.c:5785
 process_backlog+0x443/0x15f0 net/core/dev.c:6117
 __napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6877
 napi_poll net/core/dev.c:6946 [inline]
 net_rx_action+0xa94/0x1010 net/core/dev.c:7068
 handle_softirqs+0x213/0x8f0 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0x109/0x170 kernel/softirq.c:655
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__sanitizer_cov_trace_pc+0x41/0x70 kernel/kcov.c:217
Code: 00 48 8b 34 24 74 1d f6 c4 01 74 43 a9 00 00 0f 00 75 3c a9 00 00 f0 00 75 35 8b 82 1c 16 00 00 85 c0 74 2b 8b 82 f8 15 00 00 <83> f8 02 75 20 48 8b 8a 00 16 00 00 8b 92 fc 15 00 00 48 8b 01 48
RSP: 0018:ffffc9000d027668 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81e3b681
RDX: ffff8880568cc880 RSI: ffffffff81e3b68e RDI: 0000000000000001
RBP: 0000000000000010 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000003 R12: dffffc0000000000
R13: 00007fc6e02dd000 R14: ffffea00009f55c0 R15: ffffc9000d027aa8
 zap_present_ptes mm/memory.c:1585 [inline]
 zap_pte_range mm/memory.c:1627 [inline]
 zap_pmd_range mm/memory.c:1753 [inline]
 zap_pud_range mm/memory.c:1782 [inline]
 zap_p4d_range mm/memory.c:1803 [inline]
 unmap_page_range+0x15ae/0x3d60 mm/memory.c:1824
 unmap_single_vma+0x194/0x2b0 mm/memory.c:1870
 unmap_vmas+0x22f/0x490 mm/memory.c:1914
 exit_mmap+0x1c6/0xb20 mm/mmap.c:1667
 __mmput+0x12a/0x4c0 kernel/fork.c:1353
 mmput+0x62/0x70 kernel/fork.c:1375
 exit_mm kernel/exit.c:570 [inline]
 do_exit+0x9bf/0x2d70 kernel/exit.c:925
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
 get_signal+0x24ed/0x26c0 kernel/signal.c:3017
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc6e1b7ff19
Code: Unable to access opcode bytes at 0x7fc6e1b7feef.
RSP: 002b:00007fc6e2a61058 EFLAGS: 00000246
 ORIG_RAX: 000000000000002f
RAX: fffffffffffffe00 RBX: 00007fc6e1d45fa0 RCX: 00007fc6e1b7ff19
RDX: 0000000000000700 RSI: 0000000020000580 RDI: 0000000000000003
RBP: 00007fc6e1bf3986 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc6e1d45fa0 R15: 00007ffc0e5cc718
 </TASK>

The buggy address belongs to the object at ffff888025786580
 which belongs to the cache tw_sock_TCP of size 288
The buggy address is located 120 bytes inside of
 allocated 288-byte region [ffff888025786580, ffff8880257866a0)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x25786
head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff888028588d01
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff888020436f00 dead000000000122 0000000000000000
raw: 0000000000000000 0000000080170017 00000001f5000000 ffff888028588d01
head: 00fff00000000040 ffff888020436f00 dead000000000122 0000000000000000
head: 0000000000000000 0000000080170017 00000001f5000000 ffff888028588d01
head: 00fff00000000001 ffffea000095e181 ffffffffffffffff 0000000000000000
head: 0000000000000002 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 10902, tgid 10901 (syz.5.1594), ts 152891956217, free_ts 152883277167
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1556
 prep_new_page mm/page_alloc.c:1564 [inline]
 get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3474
 __alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4751
 alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2265
 alloc_slab_page mm/slub.c:2408 [inline]
 allocate_slab mm/slub.c:2574 [inline]
 new_slab+0x2c9/0x410 mm/slub.c:2627
 ___slab_alloc+0xdac/0x1870 mm/slub.c:3815
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3905
 __slab_alloc_node mm/slub.c:3980 [inline]
 slab_alloc_node mm/slub.c:4141 [inline]
 kmem_cache_alloc_noprof+0xfa/0x3d0 mm/slub.c:4160
 inet_twsk_alloc+0x120/0x970 net/ipv4/inet_timewait_sock.c:188
 tcp_time_wait+0x5f/0xe10 net/ipv4/tcp_minisocks.c:309
 tcp_rcv_state_process+0x1fda/0x4c40 net/ipv4/tcp_input.c:6925
 tcp_v4_do_rcv+0x1ad/0xa90 net/ipv4/tcp_ipv4.c:1939
 tcp_v4_rcv+0x33a0/0x4380 net/ipv4/tcp_ipv4.c:2351
 ip_protocol_deliver_rcu+0xba/0x4c0 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x316/0x570 net/ipv4/ip_input.c:233
 NF_HOOK include/linux/netfilter.h:314 [inline]
 NF_HOOK include/linux/netfilter.h:308 [inline]
 ip_local_deliver+0x18e/0x1f0 net/ipv4/ip_input.c:254
page last free pid 10905 tgid 10905 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1127 [inline]
 free_unref_page+0x661/0x1080 mm/page_alloc.c:2657
 mm_free_pgd kernel/fork.c:809 [inline]
 __mmdrop+0xd5/0x460 kernel/fork.c:925
 mmdrop include/linux/sched/mm.h:55 [inline]
 mmdrop_sched include/linux/sched/mm.h:83 [inline]
 mmdrop_lazy_tlb_sched include/linux/sched/mm.h:110 [inline]
 finish_task_switch.isra.0+0x7af/0xcc0 kernel/sched/core.c:5268
 context_switch kernel/sched/core.c:5372 [inline]
 __schedule+0xe60/0x5ad0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6848
 ptrace_stop.part.0+0x440/0x940 kernel/signal.c:2457
 ptrace_stop kernel/signal.c:2359 [inline]
 ptrace_signal kernel/signal.c:2726 [inline]
 get_signal+0x12e7/0x26c0 kernel/signal.c:2904
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff888025786480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888025786500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888025786580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                                ^
 ffff888025786600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888025786680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
----------------
Code disassembly (best guess):
   0:	00 48 8b             	add    %cl,-0x75(%rax)
   3:	34 24                	xor    $0x24,%al
   5:	74 1d                	je     0x24
   7:	f6 c4 01             	test   $0x1,%ah
   a:	74 43                	je     0x4f
   c:	a9 00 00 0f 00       	test   $0xf0000,%eax
  11:	75 3c                	jne    0x4f
  13:	a9 00 00 f0 00       	test   $0xf00000,%eax
  18:	75 35                	jne    0x4f
  1a:	8b 82 1c 16 00 00    	mov    0x161c(%rdx),%eax
  20:	85 c0                	test   %eax,%eax
  22:	74 2b                	je     0x4f
  24:	8b 82 f8 15 00 00    	mov    0x15f8(%rdx),%eax
* 2a:	83 f8 02             	cmp    $0x2,%eax <-- trapping instruction
  2d:	75 20                	jne    0x4f
  2f:	48 8b 8a 00 16 00 00 	mov    0x1600(%rdx),%rcx
  36:	8b 92 fc 15 00 00    	mov    0x15fc(%rdx),%edx
  3c:	48 8b 01             	mov    (%rcx),%rax
  3f:	48                   	rex.W