BUG: memory leak
unreferenced object 0xffff888119d205a0 (size 32):
  comm "syz-executor.0", pid 8689, jiffies 4295034062 (age 11.520s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff81573d85>] kmalloc_trace+0x25/0x90 mm/slab_common.c:1114
    [<ffffffff83ebfbe0>] kmalloc include/linux/slab.h:599 [inline]
    [<ffffffff83ebfbe0>] kzalloc include/linux/slab.h:720 [inline]
    [<ffffffff83ebfbe0>] net_alloc net/core/net_namespace.c:422 [inline]
    [<ffffffff83ebfbe0>] copy_net_ns+0xc0/0x3d0 net/core/net_namespace.c:476
    [<ffffffff812db717>] create_new_namespaces+0x197/0x500 kernel/nsproxy.c:110
    [<ffffffff812dc152>] unshare_nsproxy_namespaces+0xa2/0x120 kernel/nsproxy.c:228
    [<ffffffff812940c4>] ksys_unshare+0x314/0x610 kernel/fork.c:3435
    [<ffffffff812943d6>] __do_sys_unshare kernel/fork.c:3506 [inline]
    [<ffffffff812943d6>] __se_sys_unshare kernel/fork.c:3504 [inline]
    [<ffffffff812943d6>] __x64_sys_unshare+0x16/0x20 kernel/fork.c:3504
    [<ffffffff84b30008>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff84b30008>] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84c0008b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff888109310500 (size 128):
  comm "syz-executor.0", pid 8689, jiffies 4295034063 (age 11.510s)
  hex dump (first 32 bytes):
    b8 12 6c 1a 81 88 ff ff 22 01 00 00 00 00 ad de  ..l.....".......
    01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff81573d85>] kmalloc_trace+0x25/0x90 mm/slab_common.c:1114
    [<ffffffff83ee4c61>] kmalloc include/linux/slab.h:599 [inline]
    [<ffffffff83ee4c61>] __hw_addr_create net/core/dev_addr_lists.c:60 [inline]
    [<ffffffff83ee4c61>] __hw_addr_add_ex+0x211/0x3c0 net/core/dev_addr_lists.c:118
    [<ffffffff83ee68ed>] __hw_addr_add net/core/dev_addr_lists.c:135 [inline]
    [<ffffffff83ee68ed>] dev_addr_init+0x8d/0xe0 net/core/dev_addr_lists.c:558
    [<ffffffff83ed0132>] alloc_netdev_mqs+0x142/0x610 net/core/dev.c:10698
    [<ffffffff8428fa83>] __ip_tunnel_create+0x203/0x3d0 net/ipv4/ip_tunnel.c:254
    [<ffffffff8429221c>] ip_tunnel_init_net+0x17c/0x2d0 net/ipv4/ip_tunnel.c:1091
    [<ffffffff83ebd7b3>] ops_init+0x53/0x1b0 net/core/net_namespace.c:136
    [<ffffffff83ebdeaa>] setup_net+0x18a/0x3a0 net/core/net_namespace.c:339
    [<ffffffff83ebfcb9>] copy_net_ns+0x199/0x3d0 net/core/net_namespace.c:491
    [<ffffffff812db717>] create_new_namespaces+0x197/0x500 kernel/nsproxy.c:110
    [<ffffffff812dc152>] unshare_nsproxy_namespaces+0xa2/0x120 kernel/nsproxy.c:228
    [<ffffffff812940c4>] ksys_unshare+0x314/0x610 kernel/fork.c:3435
    [<ffffffff812943d6>] __do_sys_unshare kernel/fork.c:3506 [inline]
    [<ffffffff812943d6>] __se_sys_unshare kernel/fork.c:3504 [inline]
    [<ffffffff812943d6>] __x64_sys_unshare+0x16/0x20 kernel/fork.c:3504
    [<ffffffff84b30008>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff84b30008>] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84c0008b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810b5dc800 (size 1024):
  comm "syz-executor.0", pid 8689, jiffies 4295034063 (age 11.510s)
  hex dump (first 32 bytes):
    08 c8 66 1a 81 88 ff ff 11 00 00 00 00 00 00 00  ..f.............
    00 00 00 00 00 00 00 00 ea ff ff ff ff ff ff ff  ................
  backtrace:
    [<ffffffff815744bb>] __do_kmalloc_node mm/slab_common.c:1022 [inline]
    [<ffffffff815744bb>] __kmalloc+0x4b/0x150 mm/slab_common.c:1036
    [<ffffffff8179d571>] kmalloc include/linux/slab.h:603 [inline]
    [<ffffffff8179d571>] kzalloc include/linux/slab.h:720 [inline]
    [<ffffffff8179d571>] __register_sysctl_table+0x51/0xb70 fs/proc/proc_sysctl.c:1366
    [<ffffffff83ee7f11>] neigh_sysctl_register+0x161/0x230 net/core/neighbour.c:3847
    [<ffffffff8425a107>] devinet_sysctl_register+0x67/0xf0 net/ipv4/devinet.c:2644
    [<ffffffff8425a2eb>] inetdev_init+0x15b/0x310 net/ipv4/devinet.c:286
    [<ffffffff8425b89a>] inetdev_event+0x8fa/0xab0 net/ipv4/devinet.c:1555
    [<ffffffff812dd7ed>] notifier_call_chain+0x8d/0x180 kernel/notifier.c:93
    [<ffffffff83ed466d>] call_netdevice_notifiers_info+0x7d/0xe0 net/core/dev.c:1970
    [<ffffffff83ee436c>] call_netdevice_notifiers_extack net/core/dev.c:2008 [inline]
    [<ffffffff83ee436c>] call_netdevice_notifiers net/core/dev.c:2022 [inline]
    [<ffffffff83ee436c>] register_netdevice+0x72c/0x8c0 net/core/dev.c:10169
    [<ffffffff8428fafc>] __ip_tunnel_create+0x27c/0x3d0 net/ipv4/ip_tunnel.c:267
    [<ffffffff8429221c>] ip_tunnel_init_net+0x17c/0x2d0 net/ipv4/ip_tunnel.c:1091
    [<ffffffff83ebd7b3>] ops_init+0x53/0x1b0 net/core/net_namespace.c:136
    [<ffffffff83ebdeaa>] setup_net+0x18a/0x3a0 net/core/net_namespace.c:339
    [<ffffffff83ebfcb9>] copy_net_ns+0x199/0x3d0 net/core/net_namespace.c:491
    [<ffffffff812db717>] create_new_namespaces+0x197/0x500 kernel/nsproxy.c:110
    [<ffffffff812dc152>] unshare_nsproxy_namespaces+0xa2/0x120 kernel/nsproxy.c:228