netdev - Re: [syzbot] memory leak in nf_hook_entries

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Date:   Tue, 04 May 2021 01:24:20 -0700
From:   syzbot <syzbot+050de9f900eb45b94ef9@...kaller.appspotmail.com>
To:     coreteam@...filter.org, davem@...emloft.net, fw@...len.de,
        kadlec@...filter.org, kuba@...nel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        netfilter-devel@...r.kernel.org, pablo@...filter.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] memory leak in nf_hook_entries_grow (2)

syzbot has found a reproducer for the following issue on:

HEAD commit:    5e321ded Merge tag 'for-5.13/parisc' of git://git.kernel.o..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=13f88f43d00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=38b336f6420141fd
dashboard link: https://syzkaller.appspot.com/bug?extid=050de9f900eb45b94ef9
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=113d2ca5d00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=167fa069d00000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+050de9f900eb45b94ef9@...kaller.appspotmail.com

BUG: memory leak
unreferenced object 0xffff88811bef9340 (size 64):
  comm "syz-executor097", pid 8413, jiffies 4294971728 (age 28.900s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 20 a8 a5 83 ff ff ff ff  ........ .......
    80 ef 42 1c 81 88 ff ff 00 b2 ed 1b 81 88 ff ff  ..B.............
  backtrace:
    [<ffffffff8146f731>] kmalloc_node include/linux/slab.h:579 [inline]
    [<ffffffff8146f731>] kvmalloc_node+0x61/0xf0 mm/util.c:587
    [<ffffffff8381dc4b>] kvmalloc include/linux/mm.h:797 [inline]
    [<ffffffff8381dc4b>] kvzalloc include/linux/mm.h:805 [inline]
    [<ffffffff8381dc4b>] allocate_hook_entries_size net/netfilter/core.c:61 [inline]
    [<ffffffff8381dc4b>] nf_hook_entries_grow+0x31b/0x370 net/netfilter/core.c:128
    [<ffffffff8381dfad>] __nf_register_net_hook+0x8d/0x290 net/netfilter/core.c:407
    [<ffffffff8381e26f>] nf_register_net_hook+0xbf/0x100 net/netfilter/core.c:541
    [<ffffffff8381e309>] nf_register_net_hooks+0x59/0xc0 net/netfilter/core.c:557
    [<ffffffff83a58262>] arpt_register_table+0x152/0x1e0 net/ipv4/netfilter/arp_tables.c:1548
    [<ffffffff83a5a88d>] arptable_filter_table_init+0x3d/0x60 net/ipv4/netfilter/arptable_filter.c:50
    [<ffffffff838ba3b9>] xt_find_table_lock+0x189/0x290 net/netfilter/x_tables.c:1244
    [<ffffffff838ba4e7>] xt_request_find_table_lock+0x27/0xb0 net/netfilter/x_tables.c:1275
    [<ffffffff83a593c2>] get_info+0xd2/0x430 net/ipv4/netfilter/arp_tables.c:807
    [<ffffffff83a59944>] do_arpt_get_ctl+0x224/0x520 net/ipv4/netfilter/arp_tables.c:1443
    [<ffffffff838201c7>] nf_getsockopt+0x57/0x80 net/netfilter/nf_sockopt.c:116
    [<ffffffff839889aa>] ip_getsockopt net/ipv4/ip_sockglue.c:1777 [inline]
    [<ffffffff839889aa>] ip_getsockopt+0xfa/0x140 net/ipv4/ip_sockglue.c:1756
    [<ffffffff8399ce7b>] tcp_getsockopt+0x4b/0x80 net/ipv4/tcp.c:4251
    [<ffffffff8366fa03>] __sys_getsockopt+0x133/0x2f0 net/socket.c:2161
    [<ffffffff8366fbe2>] __do_sys_getsockopt net/socket.c:2176 [inline]
    [<ffffffff8366fbe2>] __se_sys_getsockopt net/socket.c:2173 [inline]
    [<ffffffff8366fbe2>] __x64_sys_getsockopt+0x22/0x30 net/socket.c:2173

BUG: memory leak
unreferenced object 0xffff88811c525e80 (size 64):
  comm "syz-executor097", pid 8413, jiffies 4294971728 (age 28.900s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 20 a8 a5 83 ff ff ff ff  ........ .......
    80 ef 42 1c 81 88 ff ff 50 b2 ed 1b 81 88 ff ff  ..B.....P.......
  backtrace:
    [<ffffffff8146f731>] kmalloc_node include/linux/slab.h:579 [inline]
    [<ffffffff8146f731>] kvmalloc_node+0x61/0xf0 mm/util.c:587
    [<ffffffff8381dc4b>] kvmalloc include/linux/mm.h:797 [inline]
    [<ffffffff8381dc4b>] kvzalloc include/linux/mm.h:805 [inline]
    [<ffffffff8381dc4b>] allocate_hook_entries_size net/netfilter/core.c:61 [inline]
    [<ffffffff8381dc4b>] nf_hook_entries_grow+0x31b/0x370 net/netfilter/core.c:128
    [<ffffffff8381dfad>] __nf_register_net_hook+0x8d/0x290 net/netfilter/core.c:407
    [<ffffffff8381e26f>] nf_register_net_hook+0xbf/0x100 net/netfilter/core.c:541
    [<ffffffff8381e309>] nf_register_net_hooks+0x59/0xc0 net/netfilter/core.c:557
    [<ffffffff83a58262>] arpt_register_table+0x152/0x1e0 net/ipv4/netfilter/arp_tables.c:1548
    [<ffffffff83a5a88d>] arptable_filter_table_init+0x3d/0x60 net/ipv4/netfilter/arptable_filter.c:50
    [<ffffffff838ba3b9>] xt_find_table_lock+0x189/0x290 net/netfilter/x_tables.c:1244
    [<ffffffff838ba4e7>] xt_request_find_table_lock+0x27/0xb0 net/netfilter/x_tables.c:1275
    [<ffffffff83a593c2>] get_info+0xd2/0x430 net/ipv4/netfilter/arp_tables.c:807
    [<ffffffff83a59944>] do_arpt_get_ctl+0x224/0x520 net/ipv4/netfilter/arp_tables.c:1443
    [<ffffffff838201c7>] nf_getsockopt+0x57/0x80 net/netfilter/nf_sockopt.c:116
    [<ffffffff839889aa>] ip_getsockopt net/ipv4/ip_sockglue.c:1777 [inline]
    [<ffffffff839889aa>] ip_getsockopt+0xfa/0x140 net/ipv4/ip_sockglue.c:1756
    [<ffffffff8399ce7b>] tcp_getsockopt+0x4b/0x80 net/ipv4/tcp.c:4251
    [<ffffffff8366fa03>] __sys_getsockopt+0x133/0x2f0 net/socket.c:2161
    [<ffffffff8366fbe2>] __do_sys_getsockopt net/socket.c:2176 [inline]
    [<ffffffff8366fbe2>] __se_sys_getsockopt net/socket.c:2173 [inline]
    [<ffffffff8366fbe2>] __x64_sys_getsockopt+0x22/0x30 net/socket.c:2173

BUG: memory leak
unreferenced object 0xffff88811bef9340 (size 64):
  comm "syz-executor097", pid 8413, jiffies 4294971728 (age 28.980s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 20 a8 a5 83 ff ff ff ff  ........ .......
    80 ef 42 1c 81 88 ff ff 00 b2 ed 1b 81 88 ff ff  ..B.............
  backtrace:
    [<ffffffff8146f731>] kmalloc_node include/linux/slab.h:579 [inline]
    [<ffffffff8146f731>] kvmalloc_node+0x61/0xf0 mm/util.c:587
    [<ffffffff8381dc4b>] kvmalloc include/linux/mm.h:797 [inline]
    [<ffffffff8381dc4b>] kvzalloc include/linux/mm.h:805 [inline]
    [<ffffffff8381dc4b>] allocate_hook_entries_size net/netfilter/core.c:61 [inline]
    [<ffffffff8381dc4b>] nf_hook_entries_grow+0x31b/0x370 net/netfilter/core.c:128
    [<ffffffff8381dfad>] __nf_register_net_hook+0x8d/0x290 net/netfilter/core.c:407
    [<ffffffff8381e26f>] nf_register_net_hook+0xbf/0x100 net/netfilter/core.c:541
    [<ffffffff8381e309>] nf_register_net_hooks+0x59/0xc0 net/netfilter/core.c:557
    [<ffffffff83a58262>] arpt_register_table+0x152/0x1e0 net/ipv4/netfilter/arp_tables.c:1548
    [<ffffffff83a5a88d>] arptable_filter_table_init+0x3d/0x60 net/ipv4/netfilter/arptable_filter.c:50
    [<ffffffff838ba3b9>] xt_find_table_lock+0x189/0x290 net/netfilter/x_tables.c:1244
    [<ffffffff838ba4e7>] xt_request_find_table_lock+0x27/0xb0 net/netfilter/x_tables.c:1275
    [<ffffffff83a593c2>] get_info+0xd2/0x430 net/ipv4/netfilter/arp_tables.c:807
    [<ffffffff83a59944>] do_arpt_get_ctl+0x224/0x520 net/ipv4/netfilter/arp_tables.c:1443
    [<ffffffff838201c7>] nf_getsockopt+0x57/0x80 net/netfilter/nf_sockopt.c:116
    [<ffffffff839889aa>] ip_getsockopt net/ipv4/ip_sockglue.c:1777 [inline]
    [<ffffffff839889aa>] ip_getsockopt+0xfa/0x140 net/ipv4/ip_sockglue.c:1756
    [<ffffffff8399ce7b>] tcp_getsockopt+0x4b/0x80 net/ipv4/tcp.c:4251
    [<ffffffff8366fa03>] __sys_getsockopt+0x133/0x2f0 net/socket.c:2161
    [<ffffffff8366fbe2>] __do_sys_getsockopt net/socket.c:2176 [inline]
    [<ffffffff8366fbe2>] __se_sys_getsockopt net/socket.c:2173 [inline]
    [<ffffffff8366fbe2>] __x64_sys_getsockopt+0x22/0x30 net/socket.c:2173

BUG: memory leak
unreferenced object 0xffff88811c525e80 (size 64):
  comm "syz-executor097", pid 8413, jiffies 4294971728 (age 28.980s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 20 a8 a5 83 ff ff ff ff  ........ .......
    80 ef 42 1c 81 88 ff ff 50 b2 ed 1b 81 88 ff ff  ..B.....P.......
  backtrace:
    [<ffffffff8146f731>] kmalloc_node include/linux/slab.h:579 [inline]
    [<ffffffff8146f731>] kvmalloc_node+0x61/0xf0 mm/util.c:587
    [<ffffffff8381dc4b>] kvmalloc include/linux/mm.h:797 [inline]
    [<ffffffff8381dc4b>] kvzalloc include/linux/mm.h:805 [inline]
    [<ffffffff8381dc4b>] allocate_hook_entries_size net/netfilter/core.c:61 [inline]
    [<ffffffff8381dc4b>] nf_hook_entries_grow+0x31b/0x370 net/netfilter/core.c:128
    [<ffffffff8381dfad>] __nf_register_net_hook+0x8d/0x290 net/netfilter/core.c:407
    [<ffffffff8381e26f>] nf_register_net_hook+0xbf/0x100 net/netfilter/core.c:541
    [<ffffffff8381e309>] nf_register_net_hooks+0x59/0xc0 net/netfilter/core.c:557
    [<ffffffff83a58262>] arpt_register_table+0x152/0x1e0 net/ipv4/netfilter/arp_tables.c:1548
    [<ffffffff83a5a88d>] arptable_filter_table_init+0x3d/0x60 net/ipv4/netfilter/arptable_filter.c:50
    [<ffffffff838ba3b9>] xt_find_table_lock+0x189/0x290 net/netfilter/x_tables.c:1244
    [<ffffffff838ba4e7>] xt_request_find_table_lock+0x27/0xb0 net/netfilter/x_tables.c:1275
    [<ffffffff83a593c2>] get_info+0xd2/0x430 net/ipv4/netfilter/arp_tables.c:807
    [<ffffffff83a59944>] do_arpt_get_ctl+0x224/0x520 net/ipv4/netfilter/arp_tables.c:1443
    [<ffffffff838201c7>] nf_getsockopt+0x57/0x80 net/netfilter/nf_sockopt.c:116
    [<ffffffff839889aa>] ip_getsockopt net/ipv4/ip_sockglue.c:1777 [inline]
    [<ffffffff839889aa>] ip_getsockopt+0xfa/0x140 net/ipv4/ip_sockglue.c:1756
    [<ffffffff8399ce7b>] tcp_getsockopt+0x4b/0x80 net/ipv4/tcp.c:4251
    [<ffffffff8366fa03>] __sys_getsockopt+0x133/0x2f0 net/socket.c:2161
    [<ffffffff8366fbe2>] __do_sys_getsockopt net/socket.c:2176 [inline]
    [<ffffffff8366fbe2>] __se_sys_getsockopt net/socket.c:2173 [inline]
    [<ffffffff8366fbe2>] __x64_sys_getsockopt+0x22/0x30 net/socket.c:2173

BUG: memory leak
unreferenced object 0xffff88811bef9340 (size 64):
  comm "syz-executor097", pid 8413, jiffies 4294971728 (age 29.060s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 20 a8 a5 83 ff ff ff ff  ........ .......
    80 ef 42 1c 81 88 ff ff 00 b2 ed 1b 81 88 ff ff  ..B.............
  backtrace:
    [<ffffffff8146f731>] kmalloc_node include/linux/slab.h:579 [inline]
    [<ffffffff8146f731>] kvmalloc_node+0x61/0xf0 mm/util.c:587
    [<ffffffff8381dc4b>] kvmalloc include/linux/mm.h:797 [inline]
    [<ffffffff8381dc4b>] kvzalloc include/linux/mm.h:805 [inline]
    [<ffffffff8381dc4b>] allocate_hook_entries_size net/netfilter/core.c:61 [inline]
    [<ffffffff8381dc4b>] nf_hook_entries_grow+0x31b/0x370 net/netfilter/core.c:128
    [<ffffffff8381dfad>] __nf_register_net_hook+0x8d/0x290 net/netfilter/core.c:407
    [<ffffffff8381e26f>] nf_register_net_hook+0xbf/0x100 net/netfilter/core.c:541
    [<ffffffff8381e309>] nf_register_net_hooks+0x59/0xc0 net/netfilter/core.c:557
    [<ffffffff83a58262>] arpt_register_table+0x152/0x1e0 net/ipv4/netfilter/arp_tables.c:1548
    [<ffffffff83a5a88d>] arptable_filter_table_init+0x3d/0x60 net/ipv4/netfilter/arptable_filter.c:50
    [<ffffffff838ba3b9>] xt_find_table_lock+0x189/0x290 net/netfilter/x_tables.c:1244
    [<ffffffff838ba4e7>] xt_request_find_table_lock+0x27/0xb0 net/netfilter/x_tables.c:1275
    [<ffffffff83a593c2>] get_info+0xd2/0x430 net/ipv4/netfilter/arp_tables.c:807
    [<ffffffff83a59944>] do_arpt_get_ctl+0x224/0x520 net/ipv4/netfilter/arp_tables.c:1443
    [<ffffffff838201c7>] nf_getsockopt+0x57/0x80 net/netfilter/nf_sockopt.c:116
    [<ffffffff839889aa>] ip_getsockopt net/ipv4/ip_sockglue.c:1777 [inline]
    [<ffffffff839889aa>] ip_getsockopt+0xfa/0x140 net/ipv4/ip_sockglue.c:1756
    [<ffffffff8399ce7b>] tcp_getsockopt+0x4b/0x80 net/ipv4/tcp.c:4251
    [<ffffffff8366fa03>] __sys_getsockopt+0x133/0x2f0 net/socket.c:2161
    [<ffffffff8366fbe2>] __do_sys_getsockopt net/socket.c:2176 [inline]
    [<ffffffff8366fbe2>] __se_sys_getsockopt net/socket.c:2173 [inline]
    [<ffffffff8366fbe2>] __x64_sys_getsockopt+0x22/0x30 net/socket.c:2173

BUG: memory leak
unreferenced object 0xffff88811c525e80 (size 64):
  comm "syz-executor097", pid 8413, jiffies 4294971728 (age 29.060s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 20 a8 a5 83 ff ff ff ff  ........ .......
    80 ef 42 1c 81 88 ff ff 50 b2 ed 1b 81 88 ff ff  ..B.....P.......
  backtrace:
    [<ffffffff8146f731>] kmalloc_node include/linux/slab.h:579 [inline]
    [<ffffffff8146f731>] kvmalloc_node+0x61/0xf0 mm/util.c:587
    [<ffffffff8381dc4b>] kvmalloc include/linux/mm.h:797 [inline]
    [<ffffffff8381dc4b>] kvzalloc include/linux/mm.h:805 [inline]
    [<ffffffff8381dc4b>] allocate_hook_entries_size net/netfilter/core.c:61 [inline]
    [<ffffffff8381dc4b>] nf_hook_entries_grow+0x31b/0x370 net/netfilter/core.c:128
    [<ffffffff8381dfad>] __nf_register_net_hook+0x8d/0x290 net/netfilter/core.c:407
    [<ffffffff8381e26f>] nf_register_net_hook+0xbf/0x100 net/netfilter/core.c:541
    [<ffffffff8381e309>] nf_register_net_hooks+0x59/0xc0 net/netfilter/core.c:557
    [<ffffffff83a58262>] arpt_register_table+0x152/0x1e0 net/ipv4/netfilter/arp_tables.c:1548
    [<ffffffff83a5a88d>] arptable_filter_table_init+0x3d/0x60 net/ipv4/netfilter/arptable_filter.c:50
    [<ffffffff838ba3b9>] xt_find_table_lock+0x189/0x290 net/netfilter/x_tables.c:1244
    [<ffffffff838ba4e7>] xt_request_find_table_lock+0x27/0xb0 net/netfilter/x_tables.c:1275
    [<ffffffff83a593c2>] get_info+0xd2/0x430 net/ipv4/netfilter/arp_tables.c:807
    [<ffffffff83a59944>] do_arpt_get_ctl+0x224/0x520 net/ipv4/netfilter/arp_tables.c:1443
    [<ffffffff838201c7>] nf_getsockopt+0x57/0x80 net/netfilter/nf_sockopt.c:116
    [<ffffffff839889aa>] ip_getsockopt net/ipv4/ip_sockglue.c:1777 [inline]
    [<ffffffff839889aa>] ip_getsockopt+0xfa/0x140 net/ipv4/ip_sockglue.c:1756
    [<ffffffff8399ce7b>] tcp_getsockopt+0x4b/0x80 net/ipv4/tcp.c:4251
    [<ffffffff8366fa03>] __sys_getsockopt+0x133/0x2f0 net/socket.c:2161
    [<ffffffff8366fbe2>] __do_sys_getsockopt net/socket.c:2176 [inline]
    [<ffffffff8366fbe2>] __se_sys_getsockopt net/socket.c:2173 [inline]
    [<ffffffff8366fbe2>] __x64_sys_getsockopt+0x22/0x30 net/socket.c:2173

BUG: memory leak
unreferenced object 0xffff88811bef9340 (size 64):
  comm "syz-executor097", pid 8413, jiffies 4294971728 (age 29.130s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 20 a8 a5 83 ff ff ff ff  ........ .......
    80 ef 42 1c 81 88 ff ff 00 b2 ed 1b 81 88 ff ff  ..B.............
  backtrace:
    [<ffffffff8146f731>] kmalloc_node include/linux/slab.h:579 [inline]
    [<ffffffff8146f731>] kvmalloc_node+0x61/0xf0 mm/util.c:587
    [<ffffffff8381dc4b>] kvmalloc include/linux/mm.h:797 [inline]
    [<ffffffff8381dc4b>] kvzalloc include/linux/mm.h:805 [inline]
    [<ffffffff8381dc4b>] allocate_hook_entries_size net/netfilter/core.c:61 [inline]
    [<ffffffff8381dc4b>] nf_hook_entries_grow+0x31b/0x370 net/netfilter/core.c:128
    [<ffffffff8381dfad>] __nf_register_net_hook+0x8d/0x290 net/netfilter/core.c:407
    [<ffffffff8381e26f>] nf_register_net_hook+0xbf/0x100 net/netfilter/core.c:541
    [<ffffffff8381e309>] nf_register_net_hooks+0x59/0xc0 net/netfilter/core.c:557
    [<ffffffff83a58262>] arpt_register_table+0x152/0x1e0 net/ipv4/netfilter/arp_tables.c:1548
    [<ffffffff83a5a88d>] arptable_filter_table_init+0x3d/0x60 net/ipv4/netfilter/arptable_filter.c:50
    [<ffffffff838ba3b9>] xt_find_table_lock+0x189/0x290 net/netfilter/x_tables.c:1244
    [<ffffffff838ba4e7>] xt_request_find_table_lock+0x27/0xb0 net/netfilter/x_tables.c:1275
    [<ffffffff83a593c2>] get_info+0xd2/0x430 net/ipv4/netfilter/arp_tables.c:807
    [<ffffffff83a59944>] do_arpt_get_ctl+0x224/0x520 net/ipv4/netfilter/arp_tables.c:1443
    [<ffffffff838201c7>] nf_getsockopt+0x57/0x80 net/netfilter/nf_sockopt.c:116
    [<ffffffff839889aa>] ip_getsockopt net/ipv4/ip_sockglue.c:1777 [inline]
    [<ffffffff839889aa>] ip_getsockopt+0xfa/0x140 net/ipv4/ip_sockglue.c:1756
    [<ffffffff8399ce7b>] tcp_getsockopt+0x4b/0x80 net/ipv4/tcp.c:4251
    [<ffffffff8366fa03>] __sys_getsockopt+0x133/0x2f0 net/socket.c:2161
    [<ffffffff8366fbe2>] __do_sys_getsockopt net/socket.c:2176 [inline]
    [<ffffffff8366fbe2>] __se_sys_getsockopt net/socket.c:2173 [inline]
    [<ffffffff8366fbe2>] __x64_sys_getsockopt+0x22/0x30 net/socket.c:2173

BUG: memory leak
unreferenced object 0xffff88811c525e80 (size 64):
  comm "syz-executor097", pid 8413, jiffies 4294971728 (age 29.130s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 20 a8 a5 83 ff ff ff ff  ........ .......
    80 ef 42 1c 81 88 ff ff 50 b2 ed 1b 81 88 ff ff  ..B.....P.......
  backtrace:
    [<ffffffff8146f731>] kmalloc_node include/linux/slab.h:579 [inline]
    [<ffffffff8146f731>] kvmalloc_node+0x61/0xf0 mm/util.c:587
    [<ffffffff8381dc4b>] kvmalloc include/linux/mm.h:797 [inline]
    [<ffffffff8381dc4b>] kvzalloc include/linux/mm.h:805 [inline]
    [<ffffffff8381dc4b>] allocate_hook_entries_size net/netfilter/core.c:61 [inline]
    [<ffffffff8381dc4b>] nf_hook_entries_grow+0x31b/0x370 net/netfilter/core.c:128
    [<ffffffff8381dfad>] __nf_register_net_hook+0x8d/0x290 net/netfilter/core.c:407
    [<ffffffff8381e26f>] nf_register_net_hook+0xbf/0x100 net/netfilter/core.c:541
    [<ffffffff8381e309>] nf_register_net_hooks+0x59/0xc0 net/netfilter/core.c:557
    [<ffffffff83a58262>] arpt_register_table+0x152/0x1e0 net/ipv4/netfilter/arp_tables.c:1548
    [<ffffffff83a5a88d>] arptable_filter_table_init+0x3d/0x60 net/ipv4/netfilter/arptable_filter.c:50
    [<ffffffff838ba3b9>] xt_find_table_lock+0x189/0x290 net/netfilter/x_tables.c:1244
    [<ffffffff838ba4e7>] xt_request_find_table_lock+0x27/0xb0 net/netfilter/x_tables.c:1275
    [<ffffffff83a593c2>] get_info+0xd2/0x430 net/ipv4/netfilter/arp_tables.c:807
    [<ffffffff83a59944>] do_arpt_get_ctl+0x224/0x520 net/ipv4/netfilter/arp_tables.c:1443
    [<ffffffff838201c7>] nf_getsockopt+0x57/0x80 net/netfilter/nf_sockopt.c:116
    [<ffffffff839889aa>] ip_getsockopt net/ipv4/ip_sockglue.c:1777 [inline]
    [<ffffffff839889aa>] ip_getsockopt+0xfa/0x140 net/ipv4/ip_sockglue.c:1756
    [<ffffffff8399ce7b>] tcp_getsockopt+0x4b/0x80 net/ipv4/tcp.c:4251
    [<ffffffff8366fa03>] __sys_getsockopt+0x133/0x2f0 net/socket.c:2161
    [<ffffffff8366fbe2>] __do_sys_getsockopt net/socket.c:2176 [inline]
    [<ffffffff8366fbe2>] __se_sys_getsockopt net/socket.c:2173 [inline]
    [<ffffffff8366fbe2>] __x64_sys_getsockopt+0x22/0x30 net/socket.c:2173

BUG: memory leak
unreferenced object 0xffff88811bef9340 (size 64):
  comm "syz-executor097", pid 8413, jiffies 4294971728 (age 29.210s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 20 a8 a5 83 ff ff ff ff  ........ .......
    80 ef 42 1c 81 88 ff ff 00 b2 ed 1b 81 88 ff ff  ..B.............
  backtrace:
    [<ffffffff8146f731>] kmalloc_node include/linux/slab.h:579 [inline]
    [<ffffffff8146f731>] kvmalloc_node+0x61/0xf0 mm/util.c:587
    [<ffffffff8381dc4b>] kvmalloc include/linux/mm.h:797 [inline]
    [<ffffffff8381dc4b>] kvzalloc include/linux/mm.h:805 [inline]
    [<ffffffff8381dc4b>] allocate_hook_entries_size net/netfilter/core.c:61 [inline]
    [<ffffffff8381dc4b>] nf_hook_entries_grow+0x31b/0x370 net/netfilter/core.c:128
    [<ffffffff8381dfad>] __nf_register_net_hook+0x8d/0x290 net/netfilter/core.c:407
    [<ffffffff8381e26f>] nf_register_net_hook+0xbf/0x100 net/netfilter/core.c:541
    [<ffffffff8381e309>] nf_register_net_hooks+0x59/0xc0 net/netfilter/core.c:557
    [<ffffffff83a58262>] arpt_register_table+0x152/0x1e0 net/ipv4/netfilter/arp_tables.c:1548
    [<ffffffff83a5a88d>] arptable_filter_table_init+0x3d/0x60 net/ipv4/netfilter/arptable_filter.c:50
    [<ffffffff838ba3b9>] xt_find_table_lock+0x189/0x290 net/netfilter/x_tables.c:1244
    [<ffffffff838ba4e7>] xt_request_find_table_lock+0x27/0xb0 net/netfilter/x_tables.c:1275
    [<ffffffff83a593c2>] get_info+0xd2/0x430 net/ipv4/netfilter/arp_tables.c:807
    [<ffffffff83a59944>] do_arpt_get_ctl+0x224/0x520 net/ipv4/netfilter/arp_tables.c:1443
    [<ffffffff838201c7>] nf_getsockopt+0x57/0x80 net/netfilter/nf_sockopt.c:116
    [<ffffffff839889aa>] ip_getsockopt net/ipv4/ip_sockglue.c:1777 [inline]
    [<ffffffff839889aa>] ip_getsockopt+0xfa/0x140 net/ipv4/ip_sockglue.c:1756
    [<ffffffff8399ce7b>] tcp_getsockopt+0x4b/0x80 net/ipv4/tcp.c:4251
    [<ffffffff8366fa03>] __sys_getsockopt+0x133/0x2f0 net/socket.c:2161
    [<ffffffff8366fbe2>] __do_sys_getsockopt net/socket.c:2176 [inline]
    [<ffffffff8366fbe2>] __se_sys_getsockopt net/socket.c:2173 [inline]
    [<ffffffff8366fbe2>] __x64_sys_getsockopt+0x22/0x30 net/socket.c:2173

BUG: memory leak
unreferenced object 0xffff88811c525e80 (size 64):
  comm "syz-executor097", pid 8413, jiffies 4294971728 (age 29.210s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 20 a8 a5 83 ff ff ff ff  ........ .......
    80 ef 42 1c 81 88 ff ff 50 b2 ed 1b 81 88 ff ff  ..B.....P.......
  backtrace:
    [<ffffffff8146f731>] kmalloc_node include/linux/slab.h:579 [inline]
    [<ffffffff8146f731>] kvmalloc_node+0x61/0xf0 mm/util.c:587
    [<ffffffff8381dc4b>] kvmalloc include/linux/mm.h:797 [inline]
    [<ffffffff8381dc4b>] kvzalloc include/linux/mm.h:805 [inline]
    [<ffffffff8381dc4b>] allocate_hook_entries_size net/netfilter/core.c:61 [inline]
    [<ffffffff8381dc4b>] nf_hook_entries_grow+0x31b/0x370 net/netfilter/core.c:128
    [<ffffffff8381dfad>] __nf_register_net_hook+0x8d/0x290 net/netfilter/core.c:407
    [<ffffffff8381e26f>] nf_register_net_hook+0xbf/0x100 net/netfilter/core.c:541
    [<ffffffff8381e309>] nf_register_net_hooks+0x59/0xc0 net/netfilter/core.c:557
    [<ffffffff83a58262>] arpt_register_table+0x152/0x1e0 net/ipv4/netfilter/arp_tables.c:1548
    [<ffffffff83a5a88d>] arptable_filter_table_init+0x3d/0x60 net/ipv4/netfilter/arptable_filter.c:50
    [<ffffffff838ba3b9>] xt_find_table_lock+0x189/0x290 net/netfilter/x_tables.c:1244
    [<ffffffff838ba4e7>] xt_request_find_table_lock+0x27/0xb0 net/netfilter/x_tables.c:1275
    [<ffffffff83a593c2>] get_info+0xd2/0x430 net/ipv4/netfilter/arp_tables.c:807
    [<ffffffff83a59944>] do_arpt_get_ctl+0x224/0x520 net/ipv4/netfilter/arp_tables.c:1443
    [<ffffffff838201c7>] nf_getsockopt+0x57/0x80 net/netfilter/nf_sockopt.c:116
    [<ffffffff839889aa>] ip_getsockopt net/ipv4/ip_sockglue.c:1777 [inline]
    [<ffffffff839889aa>] ip_getsockopt+0xfa/0x140 net/ipv4/ip_sockglue.c:1756
    [<ffffffff8399ce7b>] tcp_getsockopt+0x4b/0x80 net/ipv4/tcp.c:4251
    [<ffffffff8366fa03>] __sys_getsockopt+0x133/0x2f0 net/socket.c:2161
    [<ffffffff8366fbe2>] __do_sys_getsockopt net/socket.c:2176 [inline]
    [<ffffffff8366fbe2>] __se_sys_getsockopt net/socket.c:2173 [inline]
    [<ffffffff8366fbe2>] __x64_sys_getsockopt+0x22/0x30 net/socket.c:2173

BUG: memory leak
unreferenced object 0xffff88811bef9340 (size 64):
  comm "syz-executor097", pid 8413, jiffies 4294971728 (age 29.290s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 20 a8 a5 83 ff ff ff ff  ........ .......
    80 ef 42 1c 81 88 ff ff 00 b2 ed 1b 81 88 ff ff  ..B.............
  backtrace:
    [<ffffffff8146f731>] kmalloc_node include/linux/slab.h:579 [inline]
    [<ffffffff8146f731>] kvmalloc_node+0x61/0xf0 mm/util.c:587
    [<ffffffff8381dc4b>] kvmalloc include/linux/mm.h:797 [inline]
    [<ffffffff8381dc4b>] kvzalloc include/linux/mm.h:805 [inline]
    [<ffffffff8381dc4b>] allocate_hook_entries_size net/netfilter/core.c:61 [inline]
    [<ffffffff8381dc4b>] nf_hook_entries_grow+0x31b/0x370 net/netfilter/core.c:128
    [<ffffffff8381dfad>] __nf_register_net_hook+0x8d/0x290 net/netfilter/core.c:407
    [<ffffffff8381e26f>] nf_register_net_hook+0xbf/0x100 net/netfilter/core.c:541
    [<ffffffff8381e309>] nf_register_net_hooks+0x59/0xc0 net/netfilter/core.c:557
    [<ffffffff83a58262>] arpt_register_table+0x152/0x1e0 net/ipv4/netfilter/arp_tables.c:1548
    [<ffffffff83a5a88d>] arptable_filter_table_init+0x3d/0x60 net/ipv4/netfilter/arptable_filter.c:50
    [<ffffffff838ba3b9>] xt_find_table_lock+0x189/0x290 net/netfilter/x_tables.c:1244
    [<ffffffff838ba4e7>] xt_request_find_table_lock+0x27/0xb0 net/netfilter/x_tables.c:1275
    [<ffffffff83a593c2>] get_info+0xd2/0x430 net/ipv4/netfilter/arp_tables.c:807
    [<ffffffff83a59944>] do_arpt_get_ctl+0x224/0x520 net/ipv4/netfilter/arp_tables.c:1443
    [<ffffffff838201c7>] nf_getsockopt+0x57/0x80 net/netfilter/nf_sockopt.c:116
    [<ffffffff839889aa>] ip_getsockopt net/ipv4/ip_sockglue.c:1777 [inline]
    [<ffffffff839889aa>] ip_getsockopt+0xfa/0x140 net/ipv4/ip_sockglue.c:1756
    [<ffffffff8399ce7b>] tcp_getsockopt+0x4b/0x80 net/ipv4/tcp.c:4251
    [<ffffffff8366fa03>] __sys_getsockopt+0x133/0x2f0 net/socket.c:2161
    [<ffffffff8366fbe2>] __do_sys_getsockopt net/socket.c:2176 [inline]
    [<ffffffff8366fbe2>] __se_sys_getsockopt net/socket.c:2173 [inline]
    [<ffffffff8366fbe2>] __x64_sys_getsockopt+0x22/0x30 net/socket.c:2173

BUG: memory leak
unreferenced object 0xffff88811c525e80 (size 64):
  comm "syz-executor097", pid 8413, jiffies 4294971728 (age 29.290s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 20 a8 a5 83 ff ff ff ff  ........ .......
    80 ef 42 1c 81 88 ff ff 50 b2 ed 1b 81 88 ff ff  ..B.....P.......
  backtrace:
    [<ffffffff8146f731>] kmalloc_node include/linux/slab.h:579 [inline]
    [<ffffffff8146f731>] kvmalloc_node+0x61/0xf0 mm/util.c:587
    [<ffffffff8381dc4b>] kvmalloc include/linux/mm.h:797 [inline]
    [<ffffffff8381dc4b>] kvzalloc include/linux/mm.h:805 [inline]
    [<ffffffff8381dc4b>] allocate_hook_entries_size net/netfilter/core.c:61 [inline]
    [<ffffffff8381dc4b>] nf_hook_entries_grow+0x31b/0x370 net/netfilter/core.c:128
    [<ffffffff8381dfad>] __nf_register_net_hook+0x8d/0x290 net/netfilter/core.c:407
    [<ffffffff8381e26f>] nf_register_net_hook+0xbf/0x100 net/netfilter/core.c:541
    [<ffffffff8381e309>] nf_register_net_hooks+0x59/0xc0 net/netfilter/core.c:557
    [<ffffffff83a58262>] arpt_register_table+0x152/0x1e0 net/ipv4/netfilter/arp_tables.c:1548
    [<ffffffff83a5a88d>] arptable_filter_table_init+0x3d/0x60 net/ipv4/netfilter/arptable_filter.c:50
    [<ffffffff838ba3b9>] xt_find_table_lock+0x189/0x290 net/netfilter/x_tables.c:1244
    [<ffffffff838ba4e7>] xt_request_find_table_lock+0x27/0xb0 net/netfilter/x_tables.c:1275
    [<ffffffff83a593c2>] get_info+0xd2/0x430 net/ipv4/netfilter/arp_tables.c:807
    [<ffffffff83a59944>] do_arpt_get_ctl+0x224/0x520 net/ipv4/netfilter/arp_tables.c:1443
    [<ffffffff838201c7>] nf_getsockopt+0x57/0x80 net/netfilter/nf_sockopt.c:116
    [<ffffffff839889aa>] ip_getsockopt net/ipv4/ip_sockglue.c:1777 [inline]
    [<ffffffff839889aa>] ip_getsockopt+0xfa/0x140 net/ipv4/ip_sockglue.c:1756
    [<ffffffff8399ce7b>] tcp_getsockopt+0x4b/0x80 net/ipv4/tcp.c:4251
    [<ffffffff8366fa03>] __sys_getsockopt+0x133/0x2f0 net/socket.c:2161
    [<ffffffff8366fbe2>] __do_sys_getsockopt net/socket.c:2176 [inline]
    [<ffffffff8366fbe2>] __se_sys_getsockopt net/socket.c:2173 [inline]
    [<ffffffff8366fbe2>] __x64_sys_getsockopt+0x22/0x30 net/socket.c:2173

BUG: memory leak
unreferenced object 0xffff88811bef9340 (size 64):
  comm "syz-executor097", pid 8413, jiffies 4294971728 (age 29.370s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 20 a8 a5 83 ff ff ff ff  ........ .......
    80 ef 42 1c 81 88 ff ff 00 b2 ed 1b 81 88 ff ff  ..B.............
  backtrace:
    [<ffffffff8146f731>] kmalloc_node include/linux/slab.h:579 [inline]
    [<ffffffff8146f731>] kvmalloc_node+0x61/0xf0 mm/util.c:587
    [<ffffffff8381dc4b>] kvmalloc include/linux/mm.h:797 [inline]
    [<ffffffff8381dc4b>] kvzalloc include/linux/mm.h:805 [inline]
    [<ffffffff8381dc4b>] allocate_hook_entries_size net/netfilter/core.c:61 [inline]
    [<ffffffff8381dc4b>] nf_hook_entries_grow+0x31b/0x370 net/netfilter/core.c:128
    [<ffffffff8381dfad>] __nf_register_net_hook+0x8d/0x290 net/netfilter/core.c:407
    [<ffffffff8381e26f>] nf_register_net_hook+0xbf/0x100 net/netfilter/core.c:541
    [<ffffffff8381e309>] nf_register_net_hooks+0x59/0xc0 net/netfilter/core.c:557
    [<ffffffff83a58262>] arpt_register_table+0x152/0x1e0 net/ipv4/netfilter/arp_tables.c:1548
    [<ffffffff83a5a88d>] arptable_filter_table_init+0x3d/0x60 net/ipv4/netfilter/arptable_filter.c:50
    [<ffffffff838ba3b9>] xt_find_table_lock+0x189/0x290 net/netfilter/x_tables.c:1244
    [<ffffffff838ba4e7>] xt_request_find_table_lock+0x27/0xb0 net/netfilter/x_tables.c:1275
    [<ffffffff83a593c2>] get_info+0xd2/0x430 net/ipv4/netfilter/arp_tables.c:807
    [<ffffffff83a59944>] do_arpt_get_ctl+0x224/0x520 net/ipv4/netfilter/arp_tables.c:1443
    [<ffffffff838201c7>] nf_getsockopt+0x57/0x80 net/netfilter/nf_sockopt.c:116
    [<ffffffff839889aa>] ip_getsockopt net/ipv4/ip_sockglue.c:1777 [inline]
    [<ffffffff839889aa>] ip_getsockopt+0xfa/0x140 net/ipv4/ip_sockglue.c:1756
    [<ffffffff8399ce7b>] tcp_getsockopt+0x4b/0x80 net/ipv4/tcp.c:4251
    [<ffffffff8366fa03>] __sys_getsockopt+0x133/0x2f0 net/socket.c:2161
    [<ffffffff8366fbe2>] __do_sys_getsockopt net/socket.c:2176 [inline]
    [<ffffffff8366fbe2>] __se_sys_getsockopt net/socket.c:2173 [inline]
    [<ffffffff8366fbe2>] __x64_sys_getsockopt+0x22/0x30 net/socket.c:2173

BUG: memory leak
unreferenced object 0xffff88811c525e80 (size 64):
  comm "syz-executor097", pid 8413, jiffies 4294971728 (age 29.370s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 20 a8 a5 83 ff ff ff ff  ........ .......
    80 ef 42 1c 81 88 ff ff 50 b2 ed 1b 81 88 ff ff  ..B.....P.......
  backtrace:
    [<ffffffff8146f731>] kmalloc_node include/linux/slab.h:579 [inline]
    [<ffffffff8146f731>] kvmalloc_node+0x61/0xf0 mm/util.c:587
    [<ffffffff8381dc4b>] kvmalloc include/linux/mm.h:797 [inline]
    [<ffffffff8381dc4b>] kvzalloc include/linux/mm.h:805 [inline]
    [<ffffffff8381dc4b>] allocate_hook_entries_size net/netfilter/core.c:61 [inline]
    [<ffffffff8381dc4b>] nf_hook_entries_grow+0x31b/0x370 net/netfilter/core.c:128
    [<ffffffff8381dfad>] __nf_register_net_hook+0x8d/0x290 net/netfilter/core.c:407
    [<ffffffff8381e26f>] nf_register_net_hook+0xbf/0x100 net/netfilter/core.c:541
    [<ffffffff8381e309>] nf_register_net_hooks+0x59/0xc0 net/netfilter/core.c:557
    [<ffffffff83a58262>] arpt_register_table+0x152/0x1e0 net/ipv4/netfilter/arp_tables.c:1548
    [<ffffffff83a5a88d>] arptable_filter_table_init+0x3d/0x60 net/ipv4/netfilter/arptable_filter.c:50
    [<ffffffff838ba3b9>] xt_find_table_lock+0x189/0x290 net/netfilter/x_tables.c:1244
    [<ffffffff838ba4e7>] xt_request_find_table_lock+0x27/0xb0 net/netfilter/x_tables.c:1275
    [<ffffffff83a593c2>] get_info+0xd2/0x430 net/ipv4/netfilter/arp_tables.c:807
    [<ffffffff83a59944>] do_arpt_get_ctl+0x224/0x520 net/ipv4/netfilter/arp_tables.c:1443
    [<ffffffff838201c7>] nf_getsockopt+0x57/0x80 net/netfilter/nf_sockopt.c:116
    [<ffffffff839889aa>] ip_getsockopt net/ipv4/ip_sockglue.c:1777 [inline]
    [<ffffffff839889aa>] ip_getsockopt+0xfa/0x140 net/ipv4/ip_sockglue.c:1756
    [<ffffffff8399ce7b>] tcp_getsockopt+0x4b/0x80 net/ipv4/tcp.c:4251
    [<ffffffff8366fa03>] __sys_getsockopt+0x133/0x2f0 net/socket.c:2161
    [<ffffffff8366fbe2>] __do_sys_getsockopt net/socket.c:2176 [inline]
    [<ffffffff8366fbe2>] __se_sys_getsockopt net/socket.c:2173 [inline]
    [<ffffffff8366fbe2>] __x64_sys_getsockopt+0x22/0x30 net/socket.c:2173

write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory
write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory
write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory
write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory
write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory
write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory
write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory
write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory
write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory
write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory
write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory
write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory
write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory
write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory