linux-kernel - memory leak in nf_hook_entries

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:   Mon, 03 Jun 2019 12:02:07 -0700
From:   syzbot <syzbot+722da59ccb264bc19910@...kaller.appspotmail.com>
To:     coreteam@...filter.org, davem@...emloft.net, fw@...len.de,
        kadlec@...ckhole.kfki.hu, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
        pablo@...filter.org, syzkaller-bugs@...glegroups.com
Subject: memory leak in nf_hook_entries_grow

Hello,

syzbot found the following crash on:

HEAD commit:    3ab4436f Merge tag 'nfsd-5.2-1' of git://linux-nfs.org/~bf..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=15feaf82a00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=50393f7bfe444ff6
dashboard link: https://syzkaller.appspot.com/bug?extid=722da59ccb264bc19910
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12f02772a00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1657b80ea00000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+722da59ccb264bc19910@...kaller.appspotmail.com

035][ T7273] IPVS: ftp: loaded support on port[0] = 21
BUG: memory leak
unreferenced object 0xffff88810acd8a80 (size 96):
   comm "syz-executor073", pid 7254, jiffies 4294950560 (age 22.250s)
   hex dump (first 32 bytes):
     02 00 00 00 00 00 00 00 50 8b bb 82 ff ff ff ff  ........P.......
     00 00 00 00 00 00 00 00 00 77 bb 82 ff ff ff ff  .........w......
   backtrace:
     [<0000000013db61f1>] kmemleak_alloc_recursive  
include/linux/kmemleak.h:55 [inline]
     [<0000000013db61f1>] slab_post_alloc_hook mm/slab.h:439 [inline]
     [<0000000013db61f1>] slab_alloc_node mm/slab.c:3269 [inline]
     [<0000000013db61f1>] kmem_cache_alloc_node_trace+0x15b/0x2a0  
mm/slab.c:3597
     [<000000001a27307d>] __do_kmalloc_node mm/slab.c:3619 [inline]
     [<000000001a27307d>] __kmalloc_node+0x38/0x50 mm/slab.c:3627
     [<0000000025054add>] kmalloc_node include/linux/slab.h:590 [inline]
     [<0000000025054add>] kvmalloc_node+0x4a/0xd0 mm/util.c:431
     [<0000000050d1bc00>] kvmalloc include/linux/mm.h:637 [inline]
     [<0000000050d1bc00>] kvzalloc include/linux/mm.h:645 [inline]
     [<0000000050d1bc00>] allocate_hook_entries_size+0x3b/0x60  
net/netfilter/core.c:61
     [<00000000e8abe142>] nf_hook_entries_grow+0xae/0x270  
net/netfilter/core.c:128
     [<000000004b94797c>] __nf_register_net_hook+0x9a/0x170  
net/netfilter/core.c:337
     [<00000000d1545cbc>] nf_register_net_hook+0x34/0xc0  
net/netfilter/core.c:464
     [<00000000876c9b55>] nf_register_net_hooks+0x53/0xc0  
net/netfilter/core.c:480
     [<000000002ea868e0>] __ip_vs_init+0xe8/0x170  
net/netfilter/ipvs/ip_vs_core.c:2280
     [<000000002eb2d451>] ops_init+0x4c/0x140 net/core/net_namespace.c:130
     [<000000000284ec48>] setup_net+0xde/0x230 net/core/net_namespace.c:316
     [<00000000a70600fa>] copy_net_ns+0xf0/0x1e0 net/core/net_namespace.c:439
     [<00000000ff26c15e>] create_new_namespaces+0x141/0x2a0  
kernel/nsproxy.c:107
     [<00000000b103dc79>] copy_namespaces+0xa1/0xe0 kernel/nsproxy.c:165
     [<000000007cc008a2>] copy_process.part.0+0x11fd/0x2150  
kernel/fork.c:2035
     [<00000000c344af7c>] copy_process kernel/fork.c:1800 [inline]
     [<00000000c344af7c>] _do_fork+0x121/0x4f0 kernel/fork.c:2369

BUG: memory leak
unreferenced object 0xffff8881065de500 (size 96):
   comm "syz-executor073", pid 7254, jiffies 4294950560 (age 22.250s)
   hex dump (first 32 bytes):
     02 00 00 00 00 00 00 00 e0 8a bb 82 ff ff ff ff  ................
     00 00 00 00 00 00 00 00 90 76 bb 82 ff ff ff ff  .........v......
   backtrace:
     [<0000000013db61f1>] kmemleak_alloc_recursive  
include/linux/kmemleak.h:55 [inline]
     [<0000000013db61f1>] slab_post_alloc_hook mm/slab.h:439 [inline]
     [<0000000013db61f1>] slab_alloc_node mm/slab.c:3269 [inline]
     [<0000000013db61f1>] kmem_cache_alloc_node_trace+0x15b/0x2a0  
mm/slab.c:3597
     [<000000001a27307d>] __do_kmalloc_node mm/slab.c:3619 [inline]
     [<000000001a27307d>] __kmalloc_node+0x38/0x50 mm/slab.c:3627
     [<0000000025054add>] kmalloc_node include/linux/slab.h:590 [inline]
     [<0000000025054add>] kvmalloc_node+0x4a/0xd0 mm/util.c:431
     [<0000000050d1bc00>] kvmalloc include/linux/mm.h:637 [inline]
     [<0000000050d1bc00>] kvzalloc include/linux/mm.h:645 [inline]
     [<0000000050d1bc00>] allocate_hook_entries_size+0x3b/0x60  
net/netfilter/core.c:61
     [<00000000e8abe142>] nf_hook_entries_grow+0xae/0x270  
net/netfilter/core.c:128
     [<000000004b94797c>] __nf_register_net_hook+0x9a/0x170  
net/netfilter/core.c:337
     [<00000000d1545cbc>] nf_register_net_hook+0x34/0xc0  
net/netfilter/core.c:464
     [<00000000876c9b55>] nf_register_net_hooks+0x53/0xc0  
net/netfilter/core.c:480
     [<000000002ea868e0>] __ip_vs_init+0xe8/0x170  
net/netfilter/ipvs/ip_vs_core.c:2280
     [<000000002eb2d451>] ops_init+0x4c/0x140 net/core/net_namespace.c:130
     [<000000000284ec48>] setup_net+0xde/0x230 net/core/net_namespace.c:316
     [<00000000a70600fa>] copy_net_ns+0xf0/0x1e0 net/core/net_namespace.c:439
     [<00000000ff26c15e>] create_new_namespaces+0x141/0x2a0  
kernel/nsproxy.c:107
     [<00000000b103dc79>] copy_namespaces+0xa1/0xe0 kernel/nsproxy.c:165
     [<000000007cc008a2>] copy_process.part.0+0x11fd/0x2150  
kernel/fork.c:2035
     [<00000000c344af7c>] copy_process kernel/fork.c:1800 [inline]
     [<00000000c344af7c>] _do_fork+0x121/0x4f0 kernel/fork.c:2369

BUG: memory leak
unreferenced object 0xffff888103533c80 (size 96):
   comm "syz-executor073", pid 7254, jiffies 4294950626 (age 21.590s)
   hex dump (first 32 bytes):
     02 00 00 00 00 00 00 00 70 77 bb 82 ff ff ff ff  ........pw......
     00 00 00 00 00 00 00 00 50 8b bb 82 ff ff ff ff  ........P.......
   backtrace:
     [<0000000013db61f1>] kmemleak_alloc_recursive  
include/linux/kmemleak.h:55 [inline]
     [<0000000013db61f1>] slab_post_alloc_hook mm/slab.h:439 [inline]
     [<0000000013db61f1>] slab_alloc_node mm/slab.c:3269 [inline]
     [<0000000013db61f1>] kmem_cache_alloc_node_trace+0x15b/0x2a0  
mm/slab.c:3597
     [<000000001a27307d>] __do_kmalloc_node mm/slab.c:3619 [inline]
     [<000000001a27307d>] __kmalloc_node+0x38/0x50 mm/slab.c:3627
     [<0000000025054add>] kmalloc_node include/linux/slab.h:590 [inline]
     [<0000000025054add>] kvmalloc_node+0x4a/0xd0 mm/util.c:431
     [<0000000050d1bc00>] kvmalloc include/linux/mm.h:637 [inline]
     [<0000000050d1bc00>] kvzalloc include/linux/mm.h:645 [inline]
     [<0000000050d1bc00>] allocate_hook_entries_size+0x3b/0x60  
net/netfilter/core.c:61
     [<00000000343067d2>] __nf_hook_entries_try_shrink+0xbd/0x190  
net/netfilter/core.c:248
     [<0000000004051f14>] __nf_unregister_net_hook+0x12f/0x1b0  
net/netfilter/core.c:416
     [<00000000f74d14d1>] nf_unregister_net_hook+0x32/0x70  
net/netfilter/core.c:431
     [<00000000de019d2a>] nf_unregister_net_hooks+0x3d/0x50  
net/netfilter/core.c:499
     [<00000000fbdf13a9>] selinux_nf_unregister+0x22/0x30  
security/selinux/hooks.c:7089
     [<00000000ff82a3bf>] ops_exit_list.isra.0+0x4c/0x80  
net/core/net_namespace.c:154
     [<000000008a424b95>] setup_net+0x14a/0x230 net/core/net_namespace.c:333
     [<00000000a70600fa>] copy_net_ns+0xf0/0x1e0 net/core/net_namespace.c:439
     [<00000000ff26c15e>] create_new_namespaces+0x141/0x2a0  
kernel/nsproxy.c:107
     [<00000000b103dc79>] copy_namespaces+0xa1/0xe0 kernel/nsproxy.c:165
     [<000000007cc008a2>] copy_process.part.0+0x11fd/0x2150  
kernel/fork.c:2035
     [<00000000c344af7c>] copy_process kernel/fork.c:1800 [inline]
     [<00000000c344af7c>] _do_fork+0x121/0x4f0 kernel/fork.c:2369

BUG: memory leak
unreferenced object 0xffff88810acd8a80 (size 96):
   comm "syz-executor073", pid 7254, jiffies 4294950560 (age 23.590s)
   hex dump (first 32 bytes):
     02 00 00 00 00 00 00 00 50 8b bb 82 ff ff ff ff  ........P.......
     00 00 00 00 00 00 00 00 00 77 bb 82 ff ff ff ff  .........w......
   backtrace:
     [<0000000013db61f1>] kmemleak_alloc_recursive  
include/linux/kmemleak.h:55 [inline]
     [<0000000013db61f1>] slab_post_alloc_hook mm/slab.h:439 [inline]
     [<0000000013db61f1>] slab_alloc_node mm/slab.c:3269 [inline]
     [<0000000013db61f1>] kmem_cache_alloc_node_trace+0x15b/0x2a0  
mm/slab.c:3597
     [<000000001a27307d>] __do_kmalloc_node mm/slab.c:3619 [inline]
     [<000000001a27307d>] __kmalloc_node+0x38/0x50 mm/slab.c:3627
     [<0000000025054add>] kmalloc_node include/linux/slab.h:590 [inline]
     [<0000000025054add>] kvmalloc_node+0x4a/0xd0 mm/util.c:431
     [<0000000050d1bc00>] kvmalloc include/linux/mm.h:637 [inline]
     [<0000000050d1bc00>] kvzalloc include/linux/mm.h:645 [inline]
     [<0000000050d1bc00>] allocate_hook_entries_size+0x3b/0x60  
net/netfilter/core.c:61
     [<00000000e8abe142>] nf_hook_entries_grow+0xae/0x270  
net/netfilter/core.c:128
     [<000000004b94797c>] __nf_register_net_hook+0x9a/0x170  
net/netfilter/core.c:337
     [<00000000d1545cbc>] nf_register_net_hook+0x34/0xc0  
net/netfilter/core.c:464
     [<00000000876c9b55>] nf_register_net_hooks+0x53/0xc0  
net/netfilter/core.c:480
     [<000000002ea868e0>] __ip_vs_init+0xe8/0x170  
net/netfilter/ipvs/ip_vs_core.c:2280
     [<000000002eb2d451>] ops_init+0x4c/0x140 net/core/net_namespace.c:130
     [<000000000284ec48>] setup_net+0xde/0x230 net/core/net_namespace.c:316
     [<00000000a70600fa>] copy_net_ns+0xf0/0x1e0 net/core/net_namespace.c:439
     [<00000000ff26c15e>] create_new_namespaces+0x141/0x2a0  
kernel/nsproxy.c:107
     [<00000000b103dc79>] copy_namespaces+0xa1/0xe0 kernel/nsproxy.c:165
     [<000000007cc008a2>] copy_process.part.0+0x11fd/0x2150  
kernel/fork.c:2035
     [<00000000c344af7c>] copy_process kernel/fork.c:1800 [inline]
     [<00000000c344af7c>] _do_fork+0x121/0x4f0 kernel/fork.c:2369

BUG: memory leak
unreferenced object 0xffff8881065de500 (size 96):
   comm "syz-executor073", pid 7254, jiffies 4294950560 (age 23.590s)
   hex dump (first 32 bytes):
     02 00 00 00 00 00 00 00 e0 8a bb 82 ff ff ff ff  ................
     00 00 00 00 00 00 00 00 90 76 bb 82 ff ff ff ff  .........v......
   backtrace:
     [<0000000013db61f1>] kmemleak_alloc_recursive  
include/linux/kmemleak.h:55 [inline]
     [<0000000013db61f1>] slab_post_alloc_hook mm/slab.h:439 [inline]
     [<0000000013db61f1>] slab_alloc_node mm/slab.c:3269 [inline]
     [<0000000013db61f1>] kmem_cache_alloc_node_trace+0x15b/0x2a0  
mm/slab.c:3597
     [<000000001a27307d>] __do_kmalloc_node mm/slab.c:3619 [inline]
     [<000000001a27307d>] __kmalloc_node+0x38/0x50 mm/slab.c:3627
     [<0000000025054add>] kmalloc_node include/linux/slab.h:590 [inline]
     [<0000000025054add>] kvmalloc_node+0x4a/0xd0 mm/util.c:431
     [<0000000050d1bc00>] kvmalloc include/linux/mm.h:637 [inline]
     [<0000000050d1bc00>] kvzalloc include/linux/mm.h:645 [inline]
     [<0000000050d1bc00>] allocate_hook_entries_size+0x3b/0x60  
net/netfilter/core.c:61
     [<00000000e8abe142>] nf_hook_entries_grow+0xae/0x270  
net/netfilter/core.c:128
     [<000000004b94797c>] __nf_register_net_hook+0x9a/0x170  
net/netfilter/core.c:337
     [<00000000d1545cbc>] nf_register_net_hook+0x34/0xc0  
net/netfilter/core.c:464
     [<00000000876c9b55>] nf_register_net_hooks+0x53/0xc0  
net/netfilter/core.c:480
     [<000000002ea868e0>] __ip_vs_init+0xe8/0x170  
net/netfilter/ipvs/ip_vs_core.c:2280
     [<000000002eb2d451>] ops_init+0x4c/0x140 net/core/net_namespace.c:130
     [<000000000284ec48>] setup_net+0xde/0x230 net/core/net_namespace.c:316
     [<00000000a70600fa>] copy_net_ns+0xf0/0x1e0 net/core/net_namespace.c:439
     [<00000000ff26c15e>] create_new_namespaces+0x141/0x2a0  
kernel/nsproxy.c:107
     [<00000000b103dc79>] copy_namespaces+0xa1/0xe0 kernel/nsproxy.c:165
     [<000000007cc008a2>] copy_process.part.0+0x11fd/0x2150  
kernel/fork.c:2035
     [<00000000c344af7c>] copy_process kernel/fork.c:1800 [inline]
     [<00000000c344af7c>] _do_fork+0x121/0x4f0 kernel/fork.c:2369

BUG: memory leak
unreferenced object 0xffff888103533c80 (size 96):
   comm "syz-executor073", pid 7254, jiffies 4294950626 (age 22.930s)
   hex dump (first 32 bytes):
     02 00 00 00 00 00 00 00 70 77 bb 82 ff ff ff ff  ........pw......
     00 00 00 00 00 00 00 00 50 8b bb 82 ff ff ff ff  ........P.......
   backtrace:
     [<0000000013db61f1>] kmemleak_alloc_recursive  
include/linux/kmemleak.h:55 [inline]
     [<0000000013db61f1>] slab_post_alloc_hook mm/slab.h:439 [inline]
     [<0000000013db61f1>] slab_alloc_node mm/slab.c:3269 [inline]
     [<0000000013db61f1>] kmem_cache_alloc_node_trace+0x15b/0x2a0  
mm/slab.c:3597
     [<000000001a27307d>] __do_kmalloc_node mm/slab.c:3619 [inline]
     [<000000001a27307d>] __kmalloc_node+0x38/0x50 mm/slab.c:3627
     [<0000000025054add>] kmalloc_node include/linux/slab.h:590 [inline]
     [<0000000025054add>] kvmalloc_node+0x4a/0xd0 mm/util.c:431
     [<0000000050d1bc00>] kvmalloc include/linux/mm.h:637 [inline]
     [<0000000050d1bc00>] kvzalloc include/linux/mm.h:645 [inline]
     [<0000000050d1bc00>] allocate_hook_entries_size+0x3b/0x60  
net/netfilter/core.c:61
     [<00000000343067d2>] __nf_hook_entries_try_shrink+0xbd/0x190  
net/netfilter/core.c:248
     [<0000000004051f14>] __nf_unregister_net_hook+0x12f/0x1b0  
net/netfilter/core.c:416
     [<00000000f74d14d1>] nf_unregister_net_hook+0x32/0x70  
net/netfilter/core.c:431
     [<00000000de019d2a>] nf_unregister_net_hooks+0x3d/0x50  
net/netfilter/core.c:499
     [<00000000fbdf13a9>] selinux_nf_unregister+0x22/0x30  
security/selinux/hooks.c:7089
     [<00000000ff82a3bf>] ops_exit_list.isra.0+0x4c/0x80  
net/core/net_namespace.c:154
     [<000000008a424b95>] setup_net+0x14a/0x230 net/core/net_namespace.c:333
     [<00000000a70600fa>] copy_net_ns+0xf0/0x1e0 net/core/net_namespace.c:439
     [<00000000ff26c15e>] create_new_namespaces+0x141/0x2a0  
kernel/nsproxy.c:107
     [<00000000b103dc79>] copy_namespaces+0xa1/0xe0 kernel/nsproxy.c:165
     [<000000007cc008a2>] copy_process.part.0+0x11fd/0x2150  
kernel/fork.c:2035
     [<00000000c344af7c>] copy_process kernel/fork.c:1800 [inline]
     [<00000000c344af7c>] _do_fork+0x121/0x4f0 kernel/fork.c:2369

BUG: memory leak
unreferenced object 0xffff88810acd8a80 (size 96):
   comm "syz-executor073", pid 7254, jiffies 4294950560 (age 24.970s)
   hex dump (first 32 bytes):
     02 00 00 00 00 00 00 00 50 8b bb 82 ff ff ff ff  ........P.......
     00 00 00 00 00 00 00 00 00 77 bb 82 ff ff ff ff  .........w......
   backtrace:
     [<0000000013db61f1>] kmemleak_alloc_recursive  
include/linux/kmemleak.h:55 [inline]
     [<0000000013db61f1>] slab_post_alloc_hook mm/slab.h:439 [inline]
     [<0000000013db61f1>] slab_alloc_node mm/slab.c:3269 [inline]
     [<0000000013db61f1>] kmem_cache_alloc_node_trace+0x15b/0x2a0  
mm/slab.c:3597
     [<000000001a27307d>] __do_kmalloc_node mm/slab.c:3619 [inline]
     [<000000001a27307d>] __kmalloc_node+0x38/0x50 mm/slab.c:3627
     [<0000000025054add>] kmalloc_node include/linux/slab.h:590 [inline]
     [<0000000025054add>] kvmalloc_node+0x4a/0xd0 mm/util.c:431
     [<0000000050d1bc00>] kvmalloc include/linux/mm.h:637 [inline]
     [<0000000050d1bc00>] kvzalloc include/linux/mm.h:645 [inline]
     [<0000000050d1bc00>] allocate_hook_entries_size+0x3b/0x60  
net/netfilter/core.c:61
     [<00000000e8abe142>] nf_hook_entries_grow+0xae/0x270  
net/netfilter/core.c:128
     [<000000004b94797c>] __nf_register_net_hook+0x9a/0x170  
net/netfilter/core.c:337
     [<00000000d1545cbc>] nf_register_net_hook+0x34/0xc0  
net/netfilter/core.c:464
     [<00000000876c9b55>] nf_register_net_hooks+0x53/0xc0  
net/netfilter/core.c:480
     [<000000002ea868e0>] __ip_vs_init+0xe8/0x170  
net/netfilter/ipvs/ip_vs_core.c:2280
     [<000000002eb2d451>] ops_init+0x4c/0x140 net/core/net_namespace.c:130
     [<000000000284ec48>] setup_net+0xde/0x230 net/core/net_namespace.c:316
     [<00000000a70600fa>] copy_net_ns+0xf0/0x1e0 net/core/net_namespace.c:439
     [<00000000ff26c15e>] create_new_namespaces+0x141/0x2a0  
kernel/nsproxy.c:107
     [<00000000b103dc79>] copy_namespaces+0xa1/0xe0 kernel/nsproxy.c:165
     [<000000007cc008a2>] copy_process.part.0+0x11fd/0x2150  
kernel/fork.c:2035
     [<00000000c344af7c>] copy_process kernel/fork.c:1800 [inline]
     [<00000000c344af7c>] _do_fork+0x121/0x4f0 kernel/fork.c:2369

BUG: memory leak
unreferenced object 0xffff8881065de500 (size 96):
   comm "syz-executor073", pid 7254, jiffies 4294950560 (age 24.970s)
   hex dump (first 32 bytes):
     02 00 00 00 00 00 00 00 e0 8a bb 82 ff ff ff ff  ................
     00 00 00 00 00 00 00 00 90 76 bb 82 ff ff ff ff  .........v......
   backtrace:
     [<0000000013db61f1>] kmemleak_alloc_recursive  
include/linux/kmemleak.h:55 [inline]
     [<0000000013db61f1>] slab_post_alloc_hook mm/slab.h:439 [inline]
     [<0000000013db61f1>] slab_alloc_node mm/slab.c:3269 [inline]
     [<0000000013db61f1>] kmem_cache_alloc_node_trace+0x15b/0x2a0  
mm/slab.c:3597
     [<000000001a27307d>] __do_kmalloc_node mm/slab.c:3619 [inline]
     [<000000001a27307d>] __kmalloc_node+0x38/0x50 mm/slab.c:3627
     [<0000000025054add>] kmalloc_node include/linux/slab.h:590 [inline]
     [<0000000025054add>] kvmalloc_node+0x4a/0xd0 mm/util.c:431
     [<0000000050d1bc00>] kvmalloc include/linux/mm.h:637 [inline]
     [<0000000050d1bc00>] kvzalloc include/linux/mm.h:645 [inline]
     [<0000000050d1bc00>] allocate_hook_entries_size+0x3b/0x60  
net/netfilter/core.c:61
     [<00000000e8abe142>] nf_hook_entries_grow+0xae/0x270  
net/netfilter/core.c:128
     [<000000004b94797c>] __nf_register_net_hook+0x9a/0x170  
net/netfilter/core.c:337
     [<00000000d1545cbc>] nf_register_net_hook+0x34/0xc0  
net/netfilter/core.c:464
     [<00000000876c9b55>] nf_register_net_hooks+0x53/0xc0  
net/netfilter/core.c:480
     [<000000002ea868e0>] __ip_vs_init+0xe8/0x170  
net/netfilter/ipvs/ip_vs_core.c:2280
     [<000000002eb2d451>] ops_init+0x4c/0x140 net/core/net_namespace.c:130
     [<000000000284ec48>] setup_net+0xde/0x230 net/core/net_namespace.c:316
     [<00000000a70600fa>] copy_net_ns+0xf0/0x1e0 net/core/net_namespace.c:439
     [<00000000ff26c15e>] create_new_namespaces+0x141/0x2a0  
kernel/nsproxy.c:107
     [<00000000b103dc79>] copy_namespaces+0xa1/0xe0 kernel/nsproxy.c:165
     [<000000007cc008a2>] copy_process.part.0+0x11fd/0x2150  
kernel/fork.c:2035
     [<00000000c344af7c>] copy_process kernel/fork.c:1800 [inline]
     [<00000000c344af7c>] _do_fork+0x121/0x4f0 kernel/fork.c:2369

BUG: memory leak
unreferenced object 0xffff888103533c80 (size 96):
   comm "syz-executor073", pid 7254, jiffies 4294950626 (age 24.310s)
   hex dump (first 32 bytes):
     02 00 00 00 00 00 00 00 70 77 bb 82 ff ff ff ff  ........pw......
     00 00 00 00 00 00 00 00 50 8b bb 82 ff ff ff ff  ........P.......
   backtrace:
     [<0000000013db61f1>] kmemleak_alloc_recursive  
include/linux/kmemleak.h:55 [inline]
     [<0000000013db61f1>] slab_post_alloc_hook mm/slab.h:439 [inline]
     [<0000000013db61f1>] slab_alloc_node mm/slab.c:3269 [inline]
     [<0000000013db61f1>] kmem_cache_alloc_node_trace+0x15b/0x2a0  
mm/slab.c:3597
     [<000000001a27307d>] __do_kmalloc_node mm/slab.c:3619 [inline]
     [<000000001a27307d>] __kmalloc_node+0x38/0x50 mm/slab.c:3627
     [<0000000025054add>] kmalloc_node include/linux/slab.h:590 [inline]
     [<0000000025054add>] kvmalloc_node+0x4a/0xd0 mm/util.c:431
     [<0000000050d1bc00>] kvmalloc include/linux/mm.h:637 [inline]
     [<0000000050d1bc00>] kvzalloc include/linux/mm.h:645 [inline]
     [<0000000050d1bc00>] allocate_hook_entries_size+0x3b/0x60  
net/netfilter/core.c:61
     [<00000000343067d2>] __nf_hook_entries_try_shrink+0xbd/0x190  
net/netfilter/core.c:248
     [<0000000004051f14>] __nf_unregister_net_hook+0x12f/0x1b0  
net/netfilter/core.c:416
     [<00000000f74d14d1>] nf_unregister_net_hook+0x32/0x70  
net/netfilter/core.c:431
     [<00000000de019d2a>] nf_unregister_net_hooks+0x3d/0x50  
net/netfilter/core.c:499
     [<00000000fbdf13a9>] selinux_nf_unregister+0x22/0x30  
security/selinux/hooks.c:7089
     [<00000000ff82a3bf>] ops_exit_list.isra.0+0x4c/0x80  
net/core/net_namespace.c:154
     [<000000008a424b95>] setup_net+0x14a/0x230 net/core/net_namespace.c:333
     [<00000000a70600fa>] copy_net_ns+0xf0/0x1e0 net/core/net_namespace.c:439
     [<00000000ff26c15e>] create_new_namespaces+0x141/0x2a0  
kernel/nsproxy.c:107
     [<00000000b103dc79>] copy_namespaces+0xa1/0xe0 kernel/nsproxy.c:165
     [<000000007cc008a2>] copy_process.part.0+0x11fd/0x2150  
kernel/fork.c:2035
     [<00000000c344af7c>] copy_process kernel/fork.c:1800 [inline]
     [<00000000c344af7c>] _do_fork+0x121/0x4f0 kernel/fork.c:2369

BUG: memory leak
unreferenced object 0xffff88810acd8a80 (size 96):
   comm "syz-executor073", pid 7254, jiffies 4294950560 (age 26.290s)
   hex dump (first 32 bytes):
     02 00 00 00 00 00 00 00 50 8b bb 82 ff ff ff ff  ........P.......
     00 00 00 00 00 00 00 00 00 77 bb 82 ff ff ff ff  .........w......
   backtrace:
     [<0000000013db61f1>] kmemleak_alloc_recursive  
include/linux/kmemleak.h:55 [inline]
     [<0000000013db61f1>] slab_post_alloc_hook mm/slab.h:439 [inline]
     [<0000000013db61f1>] slab_alloc_node mm/slab.c:3269 [inline]
     [<0000000013db61f1>] kmem_cache_alloc_node_trace+0x15b/0x2a0  
mm/slab.c:3597
     [<000000001a27307d>] __do_kmalloc_node mm/slab.c:3619 [inline]
     [<000000001a27307d>] __kmalloc_node+0x38/0x50 mm/slab.c:3627
     [<0000000025054add>] kmalloc_node include/linux/slab.h:590 [inline]
     [<0000000025054add>] kvmalloc_node+0x4a/0xd0 mm/util.c:431
     [<0000000050d1bc00>] kvmalloc include/linux/mm.h:637 [inline]
     [<0000000050d1bc00>] kvzalloc include/linux/mm.h:645 [inline]
     [<0000000050d1bc00>] allocate_hook_entries_size+0x3b/0x60  
net/netfilter/core.c:61
     [<00000000e8abe142>] nf_hook_entries_grow+0xae/0x270  
net/netfilter/core.c:128
     [<000000004b94797c>] __nf_register_net_hook+0x9a/0x170  
net/netfilter/core.c:337
     [<00000000d1545cbc>] nf_register_net_hook+0x34/0xc0  
net/netfilter/core.c:464
     [<00000000876c9b55>] nf_register_net_hooks+0x53/0xc0  
net/netfilter/core.c:480
     [<000000002ea868e0>] __ip_vs_init+0xe8/0x170  
net/netfilter/ipvs/ip_vs_core.c:2280
     [<000000002eb2d451>] ops_init+0x4c/0x140 net/core/net_namespace.c:130
     [<000000000284ec48>] setup_net+0xde/0x230 net/core/net_namespace.c:316
     [<00000000a70600fa>] copy_net_ns+0xf0/0x1e0 net/core/net_namespace.c:439
     [<00000000ff26c15e>] create_new_namespaces+0x141/0x2a0  
kernel/nsproxy.c:107
     [<00000000b103dc79>] copy_namespaces+0xa1/0xe0 kernel/nsproxy.c:165
     [<000000007cc008a2>] copy_process.part.0+0x11fd/0x2150  
kernel/fork.c:2035
     [<00000000c344af7c>] copy_process kernel/fork.c:1800 [inline]
     [<00000000c344af7c>] _do_fork+0x121/0x4f0 kernel/fork.c:2369

BUG: memory leak
unreferenced object 0xffff8881065de500 (size 96):
   comm "syz-executor073", pid 7254, jiffies 4294950560 (age 26.290s)
   hex dump (first 32 bytes):
     02 00 00 00 00 00 00 00 e0 8a bb 82 ff ff ff ff  ................
     00 00 00 00 00 00 00 00 90 76 bb 82 ff ff ff ff  .........v......
   backtrace:
     [<0000000013db61f1>] kmemleak_alloc_recursive  
include/linux/kmemleak.h:55 [inline]
     [<0000000013db61f1>] slab_post_alloc_hook mm/slab.h:439 [inline]
     [<0000000013db61f1>] slab_alloc_node mm/slab.c:3269 [inline]
     [<0000000013db61f1>] kmem_cache_alloc_node_trace+0x15b/0x2a0  
mm/slab.c:3597
     [<000000001a27307d>] __do_kmalloc_node mm/slab.c:3619 [inline]
     [<000000001a27307d>] __kmalloc_node+0x38/0x50 mm/slab.c:3627
     [<0000000025054add>] kmalloc_node include/linux/slab.h:590 [inline]
     [<0000000025054add>] kvmalloc_node+0x4a/0xd0 mm/util.c:431
     [<0000000050d1bc00>] kvmalloc include/linux/mm.h:637 [inline]
     [<0000000050d1bc00>] kvzalloc include/linux/mm.h:645 [inline]
     [<0000000050d1bc00>] allocate_hook_entries_size+0x3b/0x60  
net/netfilter/core.c:61
     [<00000000e8abe142>] nf_hook_entries_grow+0xae/0x270  
net/netfilter/core.c:128
     [<000000004b94797c>] __nf_register_net_hook+0x9a/0x170  
net/netfilter/core.c:337
     [<00000000d1545cbc>] nf_register_net_hook+0x34/0xc0  
net/netfilter/core.c:464
     [<00000000876c9b55>] nf_register_net_hooks+0x53/0xc0  
net/netfilter/core.c:480
     [<000000002ea868e0>] __ip_vs_init+0xe8/0x170  
net/netfilter/ipvs/ip_vs_core.c:2280
     [<000000002eb2d451>] ops_init+0x4c/0x140 net/core/net_namespace.c:130
     [<000000000284ec48>] setup_net+0xde/0x230 net/core/net_namespace.c:316
     [<00000000a70600fa>] copy_net_ns+0xf0/0x1e0 net/core/net_namespace.c:439
     [<00000000ff26c15e>] create_new_namespaces+0x141/0x2a0  
kernel/nsproxy.c:107
     [<00000000b103dc79>] copy_namespaces+0xa1/0xe0 kernel/nsproxy.c:165
     [<000000007cc008a2>] copy_process.part.0+0x11fd/0x2150  
kernel/fork.c:2035
     [<00000000c344af7c>] copy_process kernel/fork.c:1800 [inline]
     [<00000000c344af7c>] _do_fork+0x121/0x4f0 kernel/fork.c:2369

BUG: memory leak
unreferenced object 0xffff888103533c80 (size 96):
   comm "syz-executor073", pid 7254, jiffies 4294950626 (age 25.640s)
   hex dump (first 32 bytes):
     02 00 00 00 00 00 00 00 70 77 bb 82 ff ff ff ff  ........pw......
     00 00 00 00 00 00 00 00 50 8b bb 82 ff ff ff ff  ........P.......
   backtrace:
     [<0000000013db61f1>] kmemleak_alloc_recursive  
include/linux/kmemleak.h:55 [inline]
     [<0000000013db61f1>] slab_post_alloc_hook mm/slab.h:439 [inline]
     [<0000000013db61f1>] slab_alloc_node mm/slab.c:3269 [inline]
     [<0000000013db61f1>] kmem_cache_alloc_node_trace+0x15b/0x2a0  
mm/slab.c:3597
     [<000000001a27307d>] __do_kmalloc_node mm/slab.c:3619 [inline]
     [<000000001a27307d>] __kmalloc_node+0x38/0x50 mm/slab.c:3627
     [<0000000025054add>] kmalloc_node include/linux/slab.h:590 [inline]
     [<0000000025054add>] kvmalloc_node+0x4a/0xd0 mm/util.c:431
     [<0000000050d1bc00>] kvmalloc include/linux/mm.h:637 [inline]
     [<0000000050d1bc00>] kvzalloc include/linux/mm.h:645 [inline]
     [<0000000050d1bc00>] allocate_hook_entries_size+0x3b/0x60  
net/netfilter/core.c:61
     [<00000000343067d2>] __nf_hook_entries_try_shrink+0xbd/0x190  
net/netfilter/core.c:248
     [<0000000004051f14>] __nf_unregister_net_hook+0x12f/0x1b0  
net/netfilter/core.c:416
     [<00000000f74d14d1>] nf_unregister_net_hook+0x32/0x70  
net/netfilter/core.c:431
     [<00000000de019d2a>] nf_unregister_net_hooks+0x3d/0x50  
net/netfilter/core.c:499
     [<00000000fbdf13a9>] selinux_nf_unregister+0x22/0x30  
security/selinux/hooks.c:7089
     [<00000000ff82a3bf>] ops_exit_list.isra.0+0x4c/0x80  
net/core/net_namespace.c:154
     [<000000008a424b95>] setup_net+0x14a/0x230 net/core/net_namespace.c:333
     [<00000000a70600fa>] copy_net_ns+0xf0/0x1e0 net/core/net_namespace.c:439
     [<00000000ff26c15e>] create_new_namespaces+0x141/0x2a0  
kernel/nsproxy.c:107
     [<00000000b103dc79>] copy_namespaces+0xa1/0xe0 kernel/nsproxy.c:165
     [<000000007cc008a2>] copy_process.part.0+0x11fd/0x2150  
kernel/fork.c:2035
     [<00000000c344af7c>] copy_process kernel/fork.c:1800 [inline]
     [<00000000c344af7c>] _do_fork+0x121/0x4f0 kernel/fork.c:2369

executing program
executing program


---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@...glegroups.com.

syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot can test patches for this bug, for details see:
https://goo.gl/tpsmEJ#testing-patches