mac80211_hwsim hwsim13 wlan1: entered promiscuous mode
macvtap1: entered promiscuous mode
==================================================================
BUG: KASAN: global-out-of-bounds in fib6_clean_node+0x2b4/0x49c net/ipv6/ip6_fib.c:2198
Read of size 8 at addr ffff80009749b768 by task syz.5.204/7573

CPU: 1 UID: 0 PID: 7573 Comm: syz.5.204 Not tainted 6.15.0-rc4-syzkaller-ge0f4c8dd9d2d #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 print_address_description+0xa8/0x254 mm/kasan/report.c:408
 print_report+0x68/0x84 mm/kasan/report.c:521
 kasan_report+0xb0/0x110 mm/kasan/report.c:634
 __asan_report_load8_noabort+0x20/0x2c mm/kasan/report_generic.c:381
 fib6_clean_node+0x2b4/0x49c net/ipv6/ip6_fib.c:2198
 fib6_walk_continue+0x654/0x878 net/ipv6/ip6_fib.c:2124
 fib6_walk+0x140/0x254 net/ipv6/ip6_fib.c:2172
 fib6_clean_tree net/ipv6/ip6_fib.c:2252 [inline]
 __fib6_clean_all+0x1dc/0x310 net/ipv6/ip6_fib.c:2268
 fib6_clean_all+0x3c/0x50 net/ipv6/ip6_fib.c:2279
 rt6_sync_up+0x118/0x15c net/ipv6/route.c:4837
 addrconf_notify+0x914/0xcdc net/ipv6/addrconf.c:3748
 notifier_call_chain+0x1b8/0x4e4 kernel/notifier.c:85
 raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453
 call_netdevice_notifiers_info net/core/dev.c:2176 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2214 [inline]
 call_netdevice_notifiers net/core/dev.c:2228 [inline]
 __dev_notify_flags+0x260/0x47c net/core/dev.c:-1
 rtnl_configure_link net/core/rtnetlink.c:-1 [inline]
 rtnl_newlink_create+0x52c/0x9ac net/core/rtnetlink.c:3843
 __rtnl_newlink net/core/rtnetlink.c:3950 [inline]
 rtnl_newlink+0x1194/0x15dc net/core/rtnetlink.c:4065
 rtnetlink_rcv_msg+0x664/0x97c net/core/rtnetlink.c:6955
 netlink_rcv_skb+0x230/0x414 net/netlink/af_netlink.c:2534
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6982
 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
 netlink_unicast+0x60c/0x824 net/netlink/af_netlink.c:1339
 netlink_sendmsg+0x648/0x930 net/netlink/af_netlink.c:1883
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg net/socket.c:727 [inline]
 ____sys_sendmsg+0x490/0x7b8 net/socket.c:2566
 ___sys_sendmsg+0x204/0x278 net/socket.c:2620
 __sys_sendmsg net/socket.c:2652 [inline]
 __do_sys_sendmsg net/socket.c:2657 [inline]
 __se_sys_sendmsg net/socket.c:2655 [inline]
 __arm64_sys_sendmsg+0x184/0x238 net/socket.c:2655
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600

The buggy address belongs to the variable:
 binder_devices+0x8/0x20

The buggy address belongs to the virtual mapping at
 [ffff80008f270000, ffff800097511000) created by:
 declare_kernel_vmas+0xa8/0xb8 arch/arm64/mm/mmu.c:774

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1ae49b
flags: 0x5ffc00000002000(reserved|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000002000 fffffdffc5b926c8 fffffdffc5b926c8 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff80009749b600: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
 ffff80009749b680: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
>ffff80009749b700: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9
                                                          ^
 ffff80009749b780: 00 00 f9 f9 00 00 00 00 00 00 00 00 00 00 00 00
 ffff80009749b800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
netlink: 8 bytes leftover after parsing attributes in process `syz.5.204'.