==================================================================
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 ffff888049202498 by task syz-executor/5952

CPU: 1 UID: 0 PID: 5952 Comm: syz-executor Not tainted 6.12.0-syzkaller-09073-g9f16d5e6f220 #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_reset+0x129b/0x2f20 net/ipv4/tcp_ipv4.c:910
 tcp_v4_rcv+0x371d/0x4390 net/ipv4/tcp_ipv4.c:2431
 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_sublist_rcv_finish+0x2c1/0x620 net/ipv4/ip_input.c:578
 ip_list_rcv_finish.constprop.0+0x559/0x720 net/ipv4/ip_input.c:628
 ip_sublist_rcv net/ipv4/ip_input.c:636 [inline]
 ip_list_rcv+0x339/0x450 net/ipv4/ip_input.c:670
 __netif_receive_skb_list_ptype net/core/dev.c:5715 [inline]
 __netif_receive_skb_list_core+0x755/0x950 net/core/dev.c:5762
 __netif_receive_skb_list net/core/dev.c:5814 [inline]
 netif_receive_skb_list_internal+0x753/0xdb0 net/core/dev.c:5905
 gro_normal_list include/net/gro.h:515 [inline]
 gro_normal_list include/net/gro.h:511 [inline]
 napi_complete_done+0x218/0x940 net/core/dev.c:6256
 e1000_clean+0xa28/0x2700 drivers/net/ethernet/intel/e1000/e1000_main.c:3815
 __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
 common_interrupt+0xbf/0xe0 arch/x86/kernel/irq.c:278
 </IRQ>
 <TASK>
 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:56 [inline]
RIP: 0010:stack_access_ok+0x3e/0x200 arch/x86/kernel/unwind_orc.c:393
Code: 41 54 49 89 d4 4c 89 f2 55 48 c1 ea 03 48 89 f5 53 48 89 fb 48 83 ec 08 80 3c 02 00 0f 85 94 01 00 00 4c 8d 6b 10 4c 8b 7b 08 <48> b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f
RSP: 0018:ffffc900054d7508 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc900054d75b8 RCX: ffffffff90ff7726
RDX: 1ffff92000a9aeb8 RSI: ffffc900054d7910 RDI: ffffc900054d75b8
RBP: ffffc900054d7910 R08: ffffffff90ff7756 R09: ffffffff90ff772a
R10: ffffc900054d75b8 R11: 000000000000f165 R12: 0000000000000008
R13: ffffc900054d75c8 R14: ffffc900054d75c0 R15: ffffc900054d0000
 deref_stack_reg arch/x86/kernel/unwind_orc.c:403 [inline]
 unwind_next_frame+0xac7/0x20c0 arch/x86/kernel/unwind_orc.c:585
 arch_stack_walk+0x95/0x100 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2342 [inline]
 slab_free mm/slub.c:4579 [inline]
 kmem_cache_free+0x152/0x4b0 mm/slub.c:4681
 remove_vma+0x154/0x1b0 mm/vma.c:385
 exit_mmap+0x4e2/0xb30 mm/mmap.c:1691
 __mmput+0x12a/0x480 kernel/fork.c:1347
 mmput+0x62/0x70 kernel/fork.c:1369
 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:3016
 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: 0033:0x7fca44b74a53
Code: Unable to access opcode bytes at 0x7fca44b74a29.
RSP: 002b:00007ffea12e5618 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 000000000000174c RCX: 00007fca44b74a53
RDX: 0000000040000000 RSI: 00007ffea12e562c RDI: 00000000ffffffff
RBP: 00007ffea12e562c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000
 </TASK>

The buggy address belongs to the object at ffff888049202420
 which belongs to the cache tw_sock_TCP of size 288
The buggy address is located 120 bytes inside of
 allocated 288-byte region [ffff888049202420, ffff888049202540)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x49202
head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff888031348401
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801e2c1180 dead000000000122 0000000000000000
raw: 0000000000000000 0000000080170017 00000001f5000000 ffff888031348401
head: 00fff00000000040 ffff88801e2c1180 dead000000000122 0000000000000000
head: 0000000000000000 0000000080170017 00000001f5000000 ffff888031348401
head: 00fff00000000001 ffffea0001248081 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 5952, tgid 5952 (syz-executor), ts 155609268175, free_ts 155324395977
 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+0x223/0x25a0 mm/page_alloc.c:4751
 alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2265
 alloc_slab_page mm/slub.c:2412 [inline]
 allocate_slab mm/slub.c:2578 [inline]
 new_slab+0x2c9/0x410 mm/slub.c:2631
 ___slab_alloc+0xdac/0x1880 mm/slub.c:3818
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3908
 __slab_alloc_node mm/slub.c:3961 [inline]
 slab_alloc_node mm/slub.c:4122 [inline]
 kmem_cache_alloc_noprof+0x2a7/0x2f0 mm/slub.c:4141
 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+0x4935/0x4c40 net/ipv4/tcp_input.c:6917
 tcp_v4_do_rcv+0x1ad/0xa90 net/ipv4/tcp_ipv4.c:1939
 tcp_v4_rcv+0x33a8/0x4390 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 12044 tgid 12044 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:803 [inline]
 __mmdrop+0xd5/0x460 kernel/fork.c:919
 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
 schedule_tail+0xe/0xd0 kernel/sched/core.c:5300
 ret_from_fork+0x23/0x80 arch/x86/kernel/process.c:143
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
 ffff888049202380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888049202400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888049202480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                            ^
 ffff888049202500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888049202580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
----------------
Code disassembly (best guess):
   0:	41 54                	push   %r12
   2:	49 89 d4             	mov    %rdx,%r12
   5:	4c 89 f2             	mov    %r14,%rdx
   8:	55                   	push   %rbp
   9:	48 c1 ea 03          	shr    $0x3,%rdx
   d:	48 89 f5             	mov    %rsi,%rbp
  10:	53                   	push   %rbx
  11:	48 89 fb             	mov    %rdi,%rbx
  14:	48 83 ec 08          	sub    $0x8,%rsp
  18:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1c:	0f 85 94 01 00 00    	jne    0x1b6
  22:	4c 8d 6b 10          	lea    0x10(%rbx),%r13
  26:	4c 8b 7b 08          	mov    0x8(%rbx),%r15
* 2a:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax <-- trapping instruction
  31:	fc ff df
  34:	4c 89 ea             	mov    %r13,%rdx
  37:	48 c1 ea 03          	shr    $0x3,%rdx
  3b:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  3f:	0f                   	.byte 0xf