On Sun, Jun 04, 2017 at 07:17:34PM +0800, Liping Zhang wrote: > From: Liping Zhang <zlpnobody@xxxxxxxxx> > > After running the following commands for a while, kmemleak reported that > "1879 new suspected memory leaks" happened: > # while : ; do > ip netns add test > ip netns delete test > done > > unreferenced object 0xffff88006342fa38 (size 1024): > comm "ip", pid 15477, jiffies 4295982857 (age 957.836s) > hex dump (first 32 bytes): > b8 b0 4d a0 ff ff ff ff c0 34 c3 59 00 88 ff ff ..M......4.Y.... > 04 00 00 00 a4 01 00 00 00 00 00 00 00 00 00 00 ................ > backtrace: > [<ffffffff8190510a>] kmemleak_alloc+0x4a/0xa0 > [<ffffffff81284130>] __kmalloc_track_caller+0x150/0x300 > [<ffffffff812302d0>] kmemdup+0x20/0x50 > [<ffffffffa04d598a>] dccp_init_net+0x8a/0x160 [nf_conntrack] > [<ffffffffa04cf9f5>] nf_ct_l4proto_pernet_register_one+0x25/0x90 > ... > unreferenced object 0xffff88006342da58 (size 1024): > comm "ip", pid 15477, jiffies 4295982857 (age 957.836s) > hex dump (first 32 bytes): > 10 b3 4d a0 ff ff ff ff 04 35 c3 59 00 88 ff ff ..M......5.Y.... > 04 00 00 00 a4 01 00 00 00 00 00 00 00 00 00 00 ................ > backtrace: > [<ffffffff8190510a>] kmemleak_alloc+0x4a/0xa0 > [<ffffffff81284130>] __kmalloc_track_caller+0x150/0x300 > [<ffffffff812302d0>] kmemdup+0x20/0x50 > [<ffffffffa04d6a9d>] sctp_init_net+0x5d/0x130 [nf_conntrack] > [<ffffffffa04cf9f5>] nf_ct_l4proto_pernet_register_one+0x25/0x90 > ... > > This is because we forgot to implement the get_net_proto for sctp and > dccp, so we won't invoke the nf_ct_unregister_sysctl to free the > ctl_table when do netns cleanup. Also note, we will fail to register > the sysctl for dccp/sctp either due to the lack of get_net_proto. Applied to nf, thanks. -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
