** Description changed: [Impact] - Occasionally starting new containers or creating new net namespaces may fail because of improper refcounting of conntrack entires. + Occasionally starting new containers or creating new net namespaces may soft lockup because of improper refcounting of conntrack entires. + + Softlockup backtrace: + [<ffffffff81723b69>] schedule_preempt_disabled+0x29/0x70 + [<ffffffff817259d5>] __mutex_lock_slowpath+0x135/0x1b0 + [<ffffffff811a2679>] ? __kmalloc+0x1e9/0x230 + [<ffffffff81725a6f>] mutex_lock+0x1f/0x2f + [<ffffffff8161c2c1>] copy_net_ns+0x71/0x130 + [<ffffffff8108f889>] create_new_namespaces+0xf9/0x180 + [<ffffffff8108f983>] copy_namespaces+0x73/0xa0 + [<ffffffff81065b16>] copy_process.part.26+0x9a6/0x16b0 + [<ffffffff810669f5>] do_fork+0xd5/0x340 + [<ffffffff810c8e8d>] ? call_rcu_sched+0x1d/0x20 + [<ffffffff81066ce6>] SyS_clone+0x16/0x20 + [<ffffffff81730089>] stub_clone+0x69/0x90 + [<ffffffff8172fd2d>] ? system_call_fastpath+0x1a/0x1f [Test Case] bug 1403152 has a testcase which can occasionally hit this issue [Fix] $ git describe --contains e53376bef2cd97d3e3f61fdc677fb8da7d03d0da v3.14-rc3~36^2~28^2~12
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1466135 Title: nf_conntrack releases a conntrack with non-zero refcnt To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1466135/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
