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Message-ID: <0000000000002b2262058a70001d@google.com> Subject: memory leak in nf_hook_entries_grow From: syzbot To: coreteam@netfilter.org, davem@davemloft.net, fw@strlen.de, kadlec@blackhole.kfki.hu, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, pablo@netfilter.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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@syzkaller.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@googlegroups.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