BUG: memory leak
unreferenced object 0xffff888123f273e0 (size 32):
  comm "syz-executor777", pid 9508, jiffies 4294985982 (age 9.160s)
  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:
    [<ffffffff814cdf00>] kmalloc_trace+0x20/0x90 mm/slab_common.c:1046
    [<ffffffff83864167>] kmalloc include/linux/slab.h:576 [inline]
    [<ffffffff83864167>] kzalloc include/linux/slab.h:712 [inline]
    [<ffffffff83864167>] net_alloc net/core/net_namespace.c:408 [inline]
    [<ffffffff83864167>] copy_net_ns+0xd7/0x3e0 net/core/net_namespace.c:458
    [<ffffffff81280179>] create_new_namespaces+0x199/0x4f0 kernel/nsproxy.c:110
    [<ffffffff81280adb>] unshare_nsproxy_namespaces+0x9b/0x120 kernel/nsproxy.c:226
    [<ffffffff812410ae>] ksys_unshare+0x2fe/0x600 kernel/fork.c:3189
    [<ffffffff812413c2>] __do_sys_unshare kernel/fork.c:3260 [inline]
    [<ffffffff812413c2>] __se_sys_unshare kernel/fork.c:3258 [inline]
    [<ffffffff812413c2>] __x64_sys_unshare+0x12/0x20 kernel/fork.c:3258
    [<ffffffff845fee85>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff845fee85>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88812627f800 (size 2048):
  comm "syz-executor777", pid 9508, jiffies 4294985982 (age 9.160s)
  hex dump (first 32 bytes):
    08 c0 99 0e 81 88 ff ff 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 ea ff ff ff ff ff ff ff  ................
  backtrace:
    [<ffffffff814ce961>] __do_kmalloc_node mm/slab_common.c:954 [inline]
    [<ffffffff814ce961>] __kmalloc+0x41/0x130 mm/slab_common.c:968
    [<ffffffff816df74b>] kmalloc include/linux/slab.h:581 [inline]
    [<ffffffff816df74b>] kzalloc include/linux/slab.h:712 [inline]
    [<ffffffff816df74b>] __register_sysctl_table+0x7b/0x7f0 fs/proc/proc_sysctl.c:1337
    [<ffffffff83bedf70>] __devinet_sysctl_register+0xc0/0x140 net/ipv4/devinet.c:2586
    [<ffffffff83beed6a>] devinet_init_net+0xea/0x2f0 net/ipv4/devinet.c:2709
    [<ffffffff838628be>] ops_init+0x4e/0x190 net/core/net_namespace.c:134
    [<ffffffff83862be1>] setup_net+0x1e1/0x3f0 net/core/net_namespace.c:325
    [<ffffffff83864230>] copy_net_ns+0x1a0/0x3e0 net/core/net_namespace.c:471
    [<ffffffff81280179>] create_new_namespaces+0x199/0x4f0 kernel/nsproxy.c:110
    [<ffffffff81280adb>] unshare_nsproxy_namespaces+0x9b/0x120 kernel/nsproxy.c:226
    [<ffffffff812410ae>] ksys_unshare+0x2fe/0x600 kernel/fork.c:3189
    [<ffffffff812413c2>] __do_sys_unshare kernel/fork.c:3260 [inline]
    [<ffffffff812413c2>] __se_sys_unshare kernel/fork.c:3258 [inline]
    [<ffffffff812413c2>] __x64_sys_unshare+0x12/0x20 kernel/fork.c:3258
    [<ffffffff845fee85>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff845fee85>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881242dbac0 (size 64):
  comm "syz-executor777", pid 9508, jiffies 4294985982 (age 9.160s)
  hex dump (first 32 bytes):
    02 00 00 00 00 00 00 00 60 27 93 21 81 88 ff ff  ........`'.!....
    22 01 00 00 00 00 ad de d0 ea c0 83 ff ff ff ff  "...............
  backtrace:
    [<ffffffff814ce672>] __do_kmalloc_node mm/slab_common.c:954 [inline]
    [<ffffffff814ce672>] __kmalloc_node_track_caller+0x42/0x120 mm/slab_common.c:975
    [<ffffffff814be8e8>] kmemdup+0x28/0x60 mm/util.c:129
    [<ffffffff838c808c>] kmemdup include/linux/fortify-string.h:567 [inline]
    [<ffffffff838c808c>] fib_notifier_ops_register+0x2c/0x100 net/core/fib_notifier.c:148
    [<ffffffff83c0ec46>] fib4_notifier_init+0x26/0x80 net/ipv4/fib_notifier.c:61
    [<ffffffff83bfcc61>] ip_fib_net_init net/ipv4/fib_frontend.c:1529 [inline]
    [<ffffffff83bfcc61>] fib_net_init+0x31/0x1b0 net/ipv4/fib_frontend.c:1601
    [<ffffffff838628be>] ops_init+0x4e/0x190 net/core/net_namespace.c:134
    [<ffffffff83862be1>] setup_net+0x1e1/0x3f0 net/core/net_namespace.c:325
    [<ffffffff83864230>] copy_net_ns+0x1a0/0x3e0 net/core/net_namespace.c:471
    [<ffffffff81280179>] create_new_namespaces+0x199/0x4f0 kernel/nsproxy.c:110
    [<ffffffff81280adb>] unshare_nsproxy_namespaces+0x9b/0x120 kernel/nsproxy.c:226
    [<ffffffff812410ae>] ksys_unshare+0x2fe/0x600 kernel/fork.c:3189
    [<ffffffff812413c2>] __do_sys_unshare kernel/fork.c:3260 [inline]
    [<ffffffff812413c2>] __se_sys_unshare kernel/fork.c:3258 [inline]
    [<ffffffff812413c2>] __x64_sys_unshare+0x12/0x20 kernel/fork.c:3258
    [<ffffffff845fee85>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff845fee85>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff888126f77480 (size 192):
  comm "syz-executor777", pid 9508, jiffies 4294985982 (age 9.160s)
  hex dump (first 32 bytes):
    c0 73 f7 26 81 88 ff ff 22 01 00 00 00 00 ad de  .s.&....".......
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff814ce961>] __do_kmalloc_node mm/slab_common.c:954 [inline]
    [<ffffffff814ce961>] __kmalloc+0x41/0x130 mm/slab_common.c:968
    [<ffffffff838da579>] kmalloc include/linux/slab.h:581 [inline]
    [<ffffffff838da579>] kzalloc include/linux/slab.h:712 [inline]
    [<ffffffff838da579>] fib_default_rule_add+0x29/0xe0 net/core/fib_rules.c:60
    [<ffffffff83c29b80>] fib_default_rules_init net/ipv4/fib_rules.c:398 [inline]
    [<ffffffff83c29b80>] fib4_rules_init+0x50/0x120 net/ipv4/fib_rules.c:419
    [<ffffffff83bfccec>] ip_fib_net_init net/ipv4/fib_frontend.c:1548 [inline]
    [<ffffffff83bfccec>] fib_net_init+0xbc/0x1b0 net/ipv4/fib_frontend.c:1601
    [<ffffffff838628be>] ops_init+0x4e/0x190 net/core/net_namespace.c:134
    [<ffffffff83862be1>] setup_net+0x1e1/0x3f0 net/core/net_namespace.c:325
    [<ffffffff83864230>] copy_net_ns+0x1a0/0x3e0 net/core/net_namespace.c:471
    [<ffffffff81280179>] create_new_namespaces+0x199/0x4f0 kernel/nsproxy.c:110
    [<ffffffff81280adb>] unshare_nsproxy_namespaces+0x9b/0x120 kernel/nsproxy.c:226
    [<ffffffff812410ae>] ksys_unshare+0x2fe/0x600 kernel/fork.c:3189
    [<ffffffff812413c2>] __do_sys_unshare kernel/fork.c:3260 [inline]
    [<ffffffff812413c2>] __se_sys_unshare kernel/fork.c:3258 [inline]
    [<ffffffff812413c2>] __x64_sys_unshare+0x12/0x20 kernel/fork.c:3258
    [<ffffffff845fee85>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff845fee85>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd