==================================================================
BUG: KASAN: slab-use-after-free in decode_session6+0x10e1/0x1950 net/xfrm/xfrm_policy.c:3460
Read of size 1 at addr ffff88802aa2652b by task syz-executor.1/16362

CPU: 1 PID: 16362 Comm: syz-executor.1 Not tainted 6.6.0-rc4-syzkaller-01096-g48533eca606e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:475
 kasan_report+0xda/0x110 mm/kasan/report.c:588
 decode_session6+0x10e1/0x1950 net/xfrm/xfrm_policy.c:3460
 __xfrm_decode_session+0x54/0xb0 net/xfrm/xfrm_policy.c:3566
 xfrm_decode_session_reverse include/net/xfrm.h:1223 [inline]
 icmpv6_route_lookup+0x397/0x550 net/ipv6/icmp.c:388
 icmp6_send+0x123c/0x2740 net/ipv6/icmp.c:595
 __icmpv6_send include/linux/icmpv6.h:28 [inline]
 icmpv6_send include/linux/icmpv6.h:49 [inline]
 ip6_link_failure+0x31/0x5a0 net/ipv6/route.c:2787
 dst_link_failure include/net/dst.h:437 [inline]
 ip6_tnl_xmit+0x4f9/0x3920 net/ipv6/ip6_tunnel.c:1268
 ipxip6_tnl_xmit net/ipv6/ip6_tunnel.c:1384 [inline]
 ip6_tnl_start_xmit+0x6ef/0x1750 net/ipv6/ip6_tunnel.c:1432
 __netdev_start_xmit include/linux/netdevice.h:4911 [inline]
 netdev_start_xmit include/linux/netdevice.h:4925 [inline]
 xmit_one net/core/dev.c:3544 [inline]
 dev_hard_start_xmit+0x13d/0x6c0 net/core/dev.c:3560
 sch_direct_xmit+0x1ac/0xc20 net/sched/sch_generic.c:342
 qdisc_restart net/sched/sch_generic.c:407 [inline]
 __qdisc_run+0x540/0x19d0 net/sched/sch_generic.c:415
 __dev_xmit_skb net/core/dev.c:3834 [inline]
 __dev_queue_xmit+0x24db/0x3d60 net/core/dev.c:4306
 dev_queue_xmit include/linux/netdevice.h:3092 [inline]
 neigh_connected_output+0x42c/0x5d0 net/core/neighbour.c:1583
 neigh_output include/net/neighbour.h:542 [inline]
 ip6_finish_output2+0x584/0x1700 net/ipv6/ip6_output.c:135
 __ip6_finish_output net/ipv6/ip6_output.c:196 [inline]
 ip6_finish_output+0x485/0x1250 net/ipv6/ip6_output.c:207
 NF_HOOK_COND include/linux/netfilter.h:293 [inline]
 ip6_output+0x1e2/0x530 net/ipv6/ip6_output.c:228
 dst_output include/net/dst.h:458 [inline]
 NF_HOOK include/linux/netfilter.h:304 [inline]
 NF_HOOK include/linux/netfilter.h:298 [inline]
 ip6_xmit+0x128d/0x1d40 net/ipv6/ip6_output.c:343
 inet6_csk_xmit+0x3c7/0x740 net/ipv6/inet6_connection_sock.c:135
 dccp_transmit_skb+0xd21/0x1600 net/dccp/output.c:138
 dccp_connect+0x384/0x720 net/dccp/output.c:569
 dccp_v6_connect+0xaa2/0x1570 net/dccp/ipv6.c:964
 __inet_stream_connect+0x38b/0xe20 net/ipv4/af_inet.c:676
 inet_stream_connect+0x57/0xa0 net/ipv4/af_inet.c:740
 __sys_connect_file+0x15b/0x1a0 net/socket.c:2050
 __sys_connect+0x145/0x170 net/socket.c:2067
 __do_sys_connect net/socket.c:2077 [inline]
 __se_sys_connect net/socket.c:2074 [inline]
 __x64_sys_connect+0x72/0xb0 net/socket.c:2074
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6784e7cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6785b710c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f6784f9bf80 RCX: 00007f6784e7cae9
RDX: 000000000000001c RSI: 0000000020000000 RDI: 0000000000000007
RBP: 00007f6784ec847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6784f9bf80 R15: 00007ffdd1554228
 </TASK>

Allocated by task 16115:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383
 kasan_kmalloc include/linux/kasan.h:198 [inline]
 __do_kmalloc_node mm/slab_common.c:1023 [inline]
 __kmalloc_node_track_caller+0x61/0x100 mm/slab_common.c:1043
 kmalloc_reserve+0xef/0x260 net/core/skbuff.c:581
 pskb_expand_head+0x236/0x1170 net/core/skbuff.c:2097
 netlink_trim+0x1eb/0x240 net/netlink/af_netlink.c:1324
 netlink_broadcast_filtered+0xc5/0xf00 net/netlink/af_netlink.c:1531
 netlink_broadcast net/netlink/af_netlink.c:1576 [inline]
 nlmsg_multicast include/net/netlink.h:1079 [inline]
 nlmsg_notify+0x9e/0x220 net/netlink/af_netlink.c:2588
 rtnl_notify net/core/rtnetlink.c:772 [inline]
 rtmsg_ifinfo_send net/core/rtnetlink.c:4097 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4113 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4100 [inline]
 rtnetlink_event+0x16e/0x1f0 net/core/rtnetlink.c:6531
 notifier_call_chain+0xb6/0x3b0 kernel/notifier.c:93
 call_netdevice_notifiers_info+0xb9/0x130 net/core/dev.c:1970
 call_netdevice_notifiers_extack net/core/dev.c:2008 [inline]
 call_netdevice_notifiers net/core/dev.c:2022 [inline]
 dev_set_mac_address+0x36f/0x4a0 net/core/dev.c:8860
 alb_set_slave_mac_addr+0x187/0x2c0 drivers/net/bonding/bond_alb.c:1037
 bond_alb_init_slave+0xe4/0xc30 drivers/net/bonding/bond_alb.c:1638
 bond_enslave+0x2331/0x5cf0 drivers/net/bonding/bond_main.c:2018
 do_set_master+0x1bc/0x220 net/core/rtnetlink.c:2710
 rtnl_newlink_create net/core/rtnetlink.c:3538 [inline]
 __rtnl_newlink+0x14e8/0x1940 net/core/rtnetlink.c:3741
 rtnl_newlink+0x67/0xa0 net/core/rtnetlink.c:3754
 rtnetlink_rcv_msg+0x3c4/0xdf0 net/core/rtnetlink.c:6480
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2545
 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline]
 netlink_unicast+0x536/0x810 net/netlink/af_netlink.c:1368
 netlink_sendmsg+0x93c/0xe40 net/netlink/af_netlink.c:1910
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0xd5/0x180 net/socket.c:745
 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2558
 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2612
 __sys_sendmsg+0x117/0x1e0 net/socket.c:2641
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Freed by task 16115:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522
 ____kasan_slab_free mm/kasan/common.c:236 [inline]
 ____kasan_slab_free+0x15b/0x1b0 mm/kasan/common.c:200
 kasan_slab_free include/linux/kasan.h:164 [inline]
 slab_free_hook mm/slub.c:1800 [inline]
 slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826
 slab_free mm/slub.c:3809 [inline]
 __kmem_cache_free+0xb8/0x2f0 mm/slub.c:3822
 skb_kfree_head net/core/skbuff.c:949 [inline]
 skb_free_head+0x110/0x1b0 net/core/skbuff.c:961
 skb_release_data+0x5ba/0x870 net/core/skbuff.c:991
 skb_release_all net/core/skbuff.c:1057 [inline]
 __kfree_skb net/core/skbuff.c:1071 [inline]
 consume_skb net/core/skbuff.c:1287 [inline]
 consume_skb+0xd2/0x170 net/core/skbuff.c:1281
 netlink_broadcast_filtered+0x3d4/0xf00 net/netlink/af_netlink.c:1554
 netlink_broadcast net/netlink/af_netlink.c:1576 [inline]
 nlmsg_multicast include/net/netlink.h:1079 [inline]
 nlmsg_notify+0x9e/0x220 net/netlink/af_netlink.c:2588
 rtnl_notify net/core/rtnetlink.c:772 [inline]
 rtmsg_ifinfo_send net/core/rtnetlink.c:4097 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4113 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4100 [inline]
 rtnetlink_event+0x16e/0x1f0 net/core/rtnetlink.c:6531
 notifier_call_chain+0xb6/0x3b0 kernel/notifier.c:93
 call_netdevice_notifiers_info+0xb9/0x130 net/core/dev.c:1970
 call_netdevice_notifiers_extack net/core/dev.c:2008 [inline]
 call_netdevice_notifiers net/core/dev.c:2022 [inline]
 dev_set_mac_address+0x36f/0x4a0 net/core/dev.c:8860
 alb_set_slave_mac_addr+0x187/0x2c0 drivers/net/bonding/bond_alb.c:1037
 bond_alb_init_slave+0xe4/0xc30 drivers/net/bonding/bond_alb.c:1638
 bond_enslave+0x2331/0x5cf0 drivers/net/bonding/bond_main.c:2018
 do_set_master+0x1bc/0x220 net/core/rtnetlink.c:2710
 rtnl_newlink_create net/core/rtnetlink.c:3538 [inline]
 __rtnl_newlink+0x14e8/0x1940 net/core/rtnetlink.c:3741
 rtnl_newlink+0x67/0xa0 net/core/rtnetlink.c:3754
 rtnetlink_rcv_msg+0x3c4/0xdf0 net/core/rtnetlink.c:6480
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2545
 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline]
 netlink_unicast+0x536/0x810 net/netlink/af_netlink.c:1368
 netlink_sendmsg+0x93c/0xe40 net/netlink/af_netlink.c:1910
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0xd5/0x180 net/socket.c:745
 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2558
 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2612
 __sys_sendmsg+0x117/0x1e0 net/socket.c:2641
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Last potentially related work creation:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492
 __call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2653
 netlink_release+0xe44/0x1f90 net/netlink/af_netlink.c:831
 __sock_release+0xae/0x260 net/socket.c:659
 sock_close+0x1c/0x20 net/socket.c:1419
 __fput+0x3f7/0xa70 fs/file_table.c:384
 task_work_run+0x14d/0x240 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa92/0x2a20 kernel/exit.c:874
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024
 get_signal+0x23ba/0x2790 kernel/signal.c:2892
 arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296
 do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Second to last potentially related work creation:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492
 __call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2653
 netlink_release+0xe44/0x1f90 net/netlink/af_netlink.c:831
 __sock_release+0xae/0x260 net/socket.c:659
 sock_close+0x1c/0x20 net/socket.c:1419
 __fput+0x3f7/0xa70 fs/file_table.c:384
 __fput_sync+0x47/0x50 fs/file_table.c:465
 __do_sys_close fs/open.c:1572 [inline]
 __se_sys_close fs/open.c:1557 [inline]
 __x64_sys_close+0x87/0xf0 fs/open.c:1557
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff88802aa26000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 1323 bytes inside of
 freed 2048-byte region [ffff88802aa26000, ffff88802aa26800)

The buggy address belongs to the physical page:
page:ffffea0000aa8800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2aa20
head:ffffea0000aa8800 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
anon flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000840 ffff888012c42000 0000000000000000 dead000000000001
raw: 0000000000000000 0000000080080008 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 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 7964, tgid 7961 (syz-executor.1), ts 216423709768, free_ts 216394701093
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1536
 prep_new_page mm/page_alloc.c:1543 [inline]
 get_page_from_freelist+0xee0/0x2f20 mm/page_alloc.c:3170
 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4426
 alloc_pages+0x1a9/0x270 mm/mempolicy.c:2297
 alloc_slab_page mm/slub.c:1870 [inline]
 allocate_slab+0x251/0x380 mm/slub.c:2017
 new_slab mm/slub.c:2070 [inline]
 ___slab_alloc+0x8c7/0x1580 mm/slub.c:3223
 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322
 __slab_alloc_node mm/slub.c:3375 [inline]
 slab_alloc_node mm/slub.c:3468 [inline]
 __kmem_cache_alloc_node+0x131/0x340 mm/slub.c:3517
 __do_kmalloc_node mm/slab_common.c:1022 [inline]
 __kmalloc_node+0x52/0x110 mm/slab_common.c:1030
 kmalloc_node include/linux/slab.h:619 [inline]
 kzalloc_node include/linux/slab.h:731 [inline]
 qdisc_alloc+0xb3/0xa90 net/sched/sch_generic.c:939
 qdisc_create+0xcf/0x10a0 net/sched/sch_api.c:1270
 tc_modify_qdisc+0x4d9/0x1c40 net/sched/sch_api.c:1747
 rtnetlink_rcv_msg+0x3c4/0xdf0 net/core/rtnetlink.c:6480
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2545
 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline]
 netlink_unicast+0x536/0x810 net/netlink/af_netlink.c:1368
 netlink_sendmsg+0x93c/0xe40 net/netlink/af_netlink.c:1910
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1136 [inline]
 free_unref_page_prepare+0x476/0xa40 mm/page_alloc.c:2312
 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2405
 __unfreeze_partials+0x21d/0x240 mm/slub.c:2655
 qlink_free mm/kasan/quarantine.c:166 [inline]
 qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185
 kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:292
 __kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook mm/slab.h:762 [inline]
 slab_alloc_node mm/slub.c:3478 [inline]
 __kmem_cache_alloc_node+0x195/0x340 mm/slub.c:3517
 __do_kmalloc_node mm/slab_common.c:1022 [inline]
 __kmalloc+0x4f/0x100 mm/slab_common.c:1036
 kmalloc include/linux/slab.h:603 [inline]
 tomoyo_realpath_from_path+0xb9/0x710 security/tomoyo/realpath.c:251
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_perm+0x26f/0x450 security/tomoyo/file.c:822
 security_inode_getattr+0xf1/0x150 security/security.c:2153
 vfs_getattr fs/stat.c:169 [inline]
 vfs_fstat+0x4f/0xc0 fs/stat.c:194
 vfs_fstatat+0x130/0x140 fs/stat.c:291
 __do_sys_newfstatat+0x98/0x110 fs/stat.c:459
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffff88802aa26400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802aa26480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88802aa26500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                  ^
 ffff88802aa26580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802aa26600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================