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BUG: KASAN: global-out-of-bounds in fib6_check_expired include/net/ip6_fib.h:270 [inline]
BUG: KASAN: global-out-of-bounds in __find_rr_leaf+0xbcb/0xe00 net/ipv6/route.c:843
Read of size 4 at addr ffffffff9afd4604 by task kworker/u32:5/102

CPU: 1 UID: 0 PID: 102 Comm: kworker/u32:5 Not tainted 6.15.0-syzkaller-01972-g914873bc7df9 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: ipv6_addrconf addrconf_dad_work
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:408 [inline]
 print_report+0xcd/0x680 mm/kasan/report.c:521
 kasan_report+0xe0/0x110 mm/kasan/report.c:634
 fib6_check_expired include/net/ip6_fib.h:270 [inline]
 __find_rr_leaf+0xbcb/0xe00 net/ipv6/route.c:843
 find_rr_leaf net/ipv6/route.c:899 [inline]
 rt6_select net/ipv6/route.c:934 [inline]
 fib6_table_lookup+0x7b3/0xa30 net/ipv6/route.c:2230
 ip6_pol_route+0x1cc/0x1230 net/ipv6/route.c:2266
 pol_lookup_func include/net/ip6_fib.h:616 [inline]
 fib6_rule_lookup+0x536/0x720 net/ipv6/fib6_rules.c:120
 ip6_route_input_lookup net/ipv6/route.c:2335 [inline]
 ip6_route_input+0x662/0xc00 net/ipv6/route.c:2631
 ip6_rcv_finish_core.constprop.0+0x1a0/0x5d0 net/ipv6/ip6_input.c:66
 ip6_list_rcv_finish.constprop.0+0x20f/0xb50 net/ipv6/ip6_input.c:130
 ip6_sublist_rcv net/ipv6/ip6_input.c:319 [inline]
 ipv6_list_rcv+0x339/0x450 net/ipv6/ip6_input.c:353
 __netif_receive_skb_list_ptype net/core/dev.c:5930 [inline]
 __netif_receive_skb_list_core+0x556/0x950 net/core/dev.c:5977
 __netif_receive_skb_list net/core/dev.c:6029 [inline]
 netif_receive_skb_list_internal+0x752/0xdb0 net/core/dev.c:6120
 netif_receive_skb_list net/core/dev.c:6172 [inline]
 netif_receive_skb_list+0x4d/0x4b0 net/core/dev.c:6162
 ieee80211_rx_napi+0x384/0x410 net/mac80211/rx.c:5443
 ieee80211_rx include/net/mac80211.h:5179 [inline]
 ieee80211_handle_queued_frames+0xd5/0x130 net/mac80211/main.c:441
 tasklet_action_common+0x284/0x400 kernel/softirq.c:829
 handle_softirqs+0x216/0x8e0 kernel/softirq.c:579
 do_softirq kernel/softirq.c:480 [inline]
 do_softirq+0xb2/0xf0 kernel/softirq.c:467
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x100/0x120 kernel/softirq.c:407
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:910 [inline]
 __dev_queue_xmit+0x8ab/0x43e0 net/core/dev.c:4656
 dev_queue_xmit include/linux/netdevice.h:3350 [inline]
 neigh_resolve_output net/core/neighbour.c:1512 [inline]
 neigh_resolve_output+0x53a/0x940 net/core/neighbour.c:1492
 neigh_output include/net/neighbour.h:539 [inline]
 ip6_finish_output2+0xaeb/0x2020 net/ipv6/ip6_output.c:141
 __ip6_finish_output net/ipv6/ip6_output.c:215 [inline]
 ip6_finish_output+0x3f9/0x1360 net/ipv6/ip6_output.c:226
 NF_HOOK_COND include/linux/netfilter.h:303 [inline]
 ip6_output+0x1f9/0x540 net/ipv6/ip6_output.c:247
 dst_output include/net/dst.h:459 [inline]
 NF_HOOK include/linux/netfilter.h:314 [inline]
 ndisc_send_skb+0xa91/0x1e40 net/ipv6/ndisc.c:513
 ndisc_send_ns+0xc6/0x140 net/ipv6/ndisc.c:671
 addrconf_dad_work+0xbc1/0x14e0 net/ipv6/addrconf.c:4286
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
 kthread+0x3c5/0x780 kernel/kthread.c:464
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

The buggy address belongs to the variable:
 binder_deferred_list+0x24/0x40

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1afd4
flags: 0xfff00000002000(reserved|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002000 ffffea00006bf508 ffffea00006bf508 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner info is not present (never set?)

Memory state around the buggy address:
 ffffffff9afd4500: f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9
 ffffffff9afd4580: f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9
>ffffffff9afd4600: f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9 00 f9 f9 f9
                   ^
 ffffffff9afd4680: f9 f9 f9 f9 00 00 00 00 00 00 00 00 00 00 00 00
 ffffffff9afd4700: 00 00 00 f9 f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9
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