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Message-Id: <20080911011747.7866aa73.akpm@linux-foundation.org> Date: Thu, 11 Sep 2008 01:17:47 -0700 From: Andrew Morton <akpm@...ux-foundation.org> To: netdev@...r.kernel.org Cc: bugme-daemon@...zilla.kernel.org, lexpublic@...il.com Subject: Re: [Bugme-new] [Bug 11536] New: WARNING: at net/ipv4/tcp_input.c:2569 tcp_ack+0xcd9/0x1f90() (switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Thu, 11 Sep 2008 01:12:54 -0700 (PDT) bugme-daemon@...zilla.kernel.org wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=11536 > > Summary: WARNING: at net/ipv4/tcp_input.c:2569 > tcp_ack+0xcd9/0x1f90() > Product: Networking > Version: 2.5 > KernelVersion: 2.6.26.5 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Netfilter/Iptables > AssignedTo: networking_netfilter-iptables@...nel-bugs.osdl.org > ReportedBy: lexpublic@...il.com > > > Latest working kernel version: unknown > Earliest failing kernel version: unknown > Distribution: gentoo x86-64 > Hardware Environment: > #1 2xQuadra opteron, mcp55 nvidia, forcedeth gigabit network > #2 2xQuadra xeon, intel 5000 series, e1000e gigabit network > > Software Environment: > nginx+haproxy > > Problem Description: > after 5-10 hours network load I have this backtrace in dmesg: > > ------------[ cut here ]------------ > WARNING: at net/ipv4/tcp_input.c:2569 tcp_ack+0xcd9/0x1f90() > Modules linked in: > Pid: 0, comm: swapper Tainted: G W 2.6.26.5 #5 > > Call Trace: > <IRQ> [<ffffffff80234504>] warn_on_slowpath+0x64/0xc0 > [<ffffffff8040f778>] dev_queue_xmit+0xc8/0x3b0 > [<ffffffff8049a5d9>] _spin_lock_bh+0x9/0x20 > [<ffffffff80426f09>] __nf_ct_refresh_acct+0x29/0xf0 > [<ffffffff80286c3f>] add_partial+0x1f/0x80 > [<ffffffff8023ec74>] lock_timer_base+0x34/0x70 > [<ffffffff8044fa6e>] tcp_init_tso_segs+0x2e/0x50 > [<ffffffff8044fab7>] tcp_snd_test+0x27/0x170 > [<ffffffff8044fc53>] tcp_may_send_now+0x53/0x80 > [<ffffffff8044a779>] tcp_ack+0xcd9/0x1f90 > [<ffffffff8044eda7>] tcp_rcv_established+0x587/0xdd0 > [<ffffffff80455fad>] tcp_v4_do_rcv+0xdd/0x240 > [<ffffffff8045670e>] tcp_v4_rcv+0x5fe/0x810 > [<ffffffff80437e20>] ip_rcv_finish+0x0/0x360 > [<ffffffff80438506>] ip_local_deliver_finish+0xa6/0x1f0 > [<ffffffff80437f9a>] ip_rcv_finish+0x17a/0x360 > [<ffffffff804383c6>] ip_rcv+0x246/0x2e0 > [<ffffffff803af093>] e1000_receive_skb+0x53/0x1f0 > [<ffffffff803af334>] e1000_clean_rx_irq+0x104/0x360 > [<ffffffff803ad661>] e1000_clean+0xe1/0x210 > [<ffffffff8040d842>] net_rx_action+0xe2/0x220 > [<ffffffff8023a3ca>] __do_softirq+0x7a/0xf0 > [<ffffffff8020c89c>] call_softirq+0x1c/0x30 > [<ffffffff8020e8e5>] do_softirq+0x35/0x70 > [<ffffffff8020e9d1>] do_IRQ+0x81/0x100 > [<ffffffff80212a80>] mwait_idle+0x0/0x50 > [<ffffffff8020bc21>] ret_from_intr+0x0/0xa > <EOI> [<ffffffff80209410>] default_idle+0x0/0x50 > [<ffffffff80212abc>] mwait_idle+0x3c/0x50 > [<ffffffff8020a720>] cpu_idle+0x60/0xa0 > > ---[ end trace 8bcf9abf1f67c29e ]--- > > Steps to reproduce: > > sysctl.conf: > net.ipv4.ip_forward = 0 > net.ipv4.conf.default.log_martians = 1 > net.ipv4.conf.all.log_martians = 1 > net.ipv4.conf.default.send_redirects = 0 > net.ipv4.ip_dynaddr = 0 > net.ipv4.tcp_ecn = 0 > net.ipv4.conf.default.rp_filter = 1 > net.ipv4.conf.all.rp_filter = 1 > net.ipv4.tcp_syncookies = 1 > net.ipv4.tcp_tw_recycle = 1 > net.ipv4.tcp_tw_reuse = 1 > net.ipv4.tcp_timestamps = 1 > net.ipv4.tcp_synack_retries = 5 > net.ipv4.conf.all.accept_source_route = 0 > net.ipv4.conf.default.accept_source_route = 0 > net.ipv4.conf.all.accept_redirects = 0 > net.ipv4.conf.default.accept_redirects = 0 > net.ipv4.conf.all.secure_redirects = 0 > net.ipv4.conf.default.secure_redirects = 0 > net.ipv4.icmp_echo_ignore_broadcasts = 1 > kernel.panic = 5 > net.ipv4.tcp_max_syn_backlog = 14096 > net.ipv4.tcp_synack_retries = 5 > net.ipv4.tcp_syn_retries = 5 > net.ipv4.tcp_fin_timeout = 5 > net.ipv4.tcp_keepalive_time = 7200 > net.core.optmem_max = 655360 > net.core.netdev_max_backlog = 40000 > net.core.somaxconn = 40000 > net.ipv4.tcp_max_tw_buckets = 580000 > net.core.rmem_default = 262141 > net.core.wmem_default = 262141 > net.core.rmem_max = 25165824 > net.core.wmem_max = 25165824 > net.ipv4.tcp_rmem = 4096 262141 25165824 > net.ipv4.tcp_wmem = 4096 262141 25165824 > net.ipv4.tcp_no_metrics_save = 1 > net.ipv4.tcp_mtu_probing = 1 > net.ipv4.tcp_sack = 1 > net.ipv4.tcp_dsack = 1 > > iptables rules-save: > # Generated by iptables-save v1.4.1.1 on Wed Sep 10 22:43:18 2008 > *nat > :PREROUTING ACCEPT [72621:4808515] > :POSTROUTING ACCEPT [191712:11662324] > :OUTPUT ACCEPT [191712:11662324] > COMMIT > # Completed on Wed Sep 10 22:43:18 2008 > # Generated by iptables-save v1.4.1.1 on Wed Sep 10 22:43:18 2008 > *mangle > :PREROUTING ACCEPT [16013862:7579402727] > :INPUT ACCEPT [16013694:7579367635] > :FORWARD ACCEPT [0:0] > :OUTPUT ACCEPT [9821064:22219526681] > :POSTROUTING ACCEPT [9821064:22219526681] > COMMIT > # Completed on Wed Sep 10 22:43:18 2008 > # Generated by iptables-save v1.4.1.1 on Wed Sep 10 22:43:18 2008 > *filter > :INPUT DROP [0:0] > :FORWARD ACCEPT [0:0] > :OUTPUT ACCEPT [12899:31686989] > :black - [0:0] > :block - [0:0] > :ddos - [0:0] > :synflood - [0:0] > :white - [0:0] > [18730:7560663] -A INPUT -j white > [0:0] -A INPUT -p icmp -j ACCEPT > [66:3612] -A INPUT -j block > [66:3612] -A INPUT -p tcp -m multiport --dports 80,22,443 -j ACCEPT > [66:3612] -A block -j black > [66:3612] -A block -j ddos > [19:1128] -A block -p tcp -m state --state NEW -j synflood > [0:0] -A synflood -p tcp -m multiport --dports ! 80,443 -m recent --set --name > BRUTE --rsource > [0:0] -A synflood -p tcp -m multiport --dports ! 80,443 -m recent --update > --seconds 10 --hitcount 15 --name BRUTE --rsource -j DROP > [2332:1074647] -A white -i lo -j ACCEPT > [16285:6479584] -A white -m state --state RELATED,ESTABLISHED -j ACCEPT > [47:2820] -A white -s 192.168.0.1/32 -j ACCEPT > [0:0] -A white -s 192.168.0.2/32 -j ACCEPT > COMMIT > # Completed on Wed Sep 10 22:43:18 2008 > -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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