------------[ cut here ]------------
WARNING: net/ipv4/af_inet.c:162 at inet_sock_destruct+0x554/0x650 net/ipv4/af_inet.c:162, CPU#1: syz.3.604/8475
Modules linked in:
CPU: 1 UID: 0 PID: 8475 Comm: syz.3.604 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026
pstate: 43400005 (nZcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : inet_sock_destruct+0x554/0x650 net/ipv4/af_inet.c:162
lr : inet_sock_destruct+0x554/0x650 net/ipv4/af_inet.c:162
sp : ffff80008eaf7c90
x29: ffff80008eaf7ca0 x28: 1fffe0001a730751 x27: ffff0000c7162f88
x26: ffff0000d3983a88 x25: ffff0000c7162a80 x24: 1fffe00018e2c562
x23: ffff0000c7162b10 x22: dfff800000000000 x21: ffff0000d53b4e80
x20: 0000000000000f70 x19: ffff0000c7162d0c x18: 0000000061199274
x17: 0000000000000007 x16: 0000000100000000 x15: 0000000400000004
x14: 00000000ffff8000 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: ffff600018e2c5a5 x9 : 0000000000000100
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000008 x3 : ffff800085500f30
x2 : 0000000000000f70 x1 : ffff0000d3983a80 x0 : 0000000000000000
Call trace:
 inet_sock_destruct+0x554/0x650 net/ipv4/af_inet.c:162 (P)
 udp_destruct_sock+0x28/0x38 net/ipv4/udp.c:1808
 __sk_destruct+0x80/0x854 net/core/sock.c:2357
 rcu_do_batch kernel/rcu/tree.c:2645 [inline]
 rcu_core+0x598/0xf04 kernel/rcu/tree.c:2897
 rcu_core_si+0x10/0x1c kernel/rcu/tree.c:2914
 handle_softirqs+0x2ec/0xd98 kernel/softirq.c:622
 __do_softirq+0x14/0x20 kernel/softirq.c:656
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78
 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:889
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83
 invoke_softirq kernel/softirq.c:503 [inline]
 __irq_exit_rcu+0x1ac/0x428 kernel/softirq.c:735
 irq_exit_rcu+0x14/0x84 kernel/softirq.c:752
 __el1_irq arch/arm64/kernel/entry-common.c:510 [inline]
 el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:522
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:527
 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:590
 sysctl_check_table_array fs/proc/proc_sysctl.c:1127 [inline] (P)
 sysctl_check_table fs/proc/proc_sysctl.c:1167 [inline] (P)
 __register_sysctl_table+0x38c/0xb4c fs/proc/proc_sysctl.c:1385 (P)
 register_net_sysctl_sz+0x354/0x3d0 net/sysctl_net.c:171
 __addrconf_sysctl_register+0x1fc/0x368 net/ipv6/addrconf.c:7366
 addrconf_sysctl_register+0x158/0x194 net/ipv6/addrconf.c:7414
 ipv6_add_dev+0xa30/0x100c net/ipv6/addrconf.c:460
 addrconf_notify+0x42c/0xbe8 net/ipv6/addrconf.c:3685
 notifier_call_chain+0x1a4/0x624 kernel/notifier.c:85
 raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453
 call_netdevice_notifiers_info+0xb8/0x120 net/core/dev.c:2250
 call_netdevice_notifiers_extack net/core/dev.c:2288 [inline]
 call_netdevice_notifiers net/core/dev.c:2302 [inline]
 register_netdevice+0x1018/0x14b8 net/core/dev.c:11478
 register_netdev+0x4c/0x68 net/core/dev.c:11556
 ip6gre_init_net+0x238/0x34c net/ipv6/ip6_gre.c:1609
 ops_init+0x2cc/0x528 net/core/net_namespace.c:137
 setup_net+0x118/0x2fc net/core/net_namespace.c:446
 copy_net_ns+0x458/0x66c net/core/net_namespace.c:579
 create_new_namespaces+0x304/0x50c kernel/nsproxy.c:132
 unshare_nsproxy_namespaces+0x120/0x170 kernel/nsproxy.c:234
 ksys_unshare+0x3d4/0x6d8 kernel/fork.c:3269
 __do_sys_unshare kernel/fork.c:3343 [inline]
 __se_sys_unshare kernel/fork.c:3341 [inline]
 __arm64_sys_unshare+0x3c/0x50 kernel/fork.c:3341
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594
irq event stamp: 4575
hardirqs last  enabled at (4574): [<ffff800080b9c534>] kasan_quarantine_put+0xb4/0x1c4 mm/kasan/quarantine.c:234
hardirqs last disabled at (4575): [<ffff8000868ccc68>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:425
softirqs last  enabled at (4512): [<ffff800084cb537c>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last  enabled at (4512): [<ffff800084cb537c>] neigh_parms_alloc+0x328/0x45c net/core/neighbour.c:1786
softirqs last disabled at (4547): [<ffff8000800204b0>] __do_softirq+0x14/0x20 kernel/softirq.c:656
---[ end trace 0000000000000000 ]---