Bug#728726: linux-image-3.11: tcp_fastretrans_alert
Package: linux-image-3.11-1-amd64
Version: 3.11.6-2
Severity: Important
Hello, comrades.
Periodically I see in log this:
Nov 4 19:46:51 debian-terminal kernel: [31801.162251] ------------[ cut here ]------------
Nov 4 19:46:51 debian-terminal kernel: [31801.162276] WARNING: CPU: 1 PID: 0 at /build/linux-iRt5Ta/linux-3.11.6/net/ipv4/tcp_input.c:2711 tcp_fastretrans_alert+0xb72/0xba0()
Nov 4 19:46:51 debian-terminal kernel: [31801.162279] Modules linked in: pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) nls_utf8 nls_cp437 vfat fat isofs usb_storage ppdev lp joydev hid_generic usbhid hid fuse snd_usb_audio snd_usbmidi_lib snd_seq_midi snd_seq_midi_event snd_rawmidi uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev media coretemp iTCO_wdt iTCO_vendor_support sg microcode sr_mod cdrom evdev pcspkr i2c_i801 snd_hda_codec_via nvidia(PO) floppy parport_pc parport snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_page_alloc snd_seq lpc_ich mfd_core snd_seq_device mperf snd_timer button processor thermal_sys r8169 mii ehci_pci uhci_hcd ehci_hcd rng_core snd i2c_core usbcore soundcore usb_common ext4 crc16 mbcache jbd2 sd_mod crc_t10dif ata_generic ata_piix libata scsi_mod
Nov 4 19:46:51 debian-terminal kernel: [31801.162378] CPU: 1 PID: 0 Comm: swapper/1 Tainted: P O 3.11-1-amd64 #1 Debian 3.11.6-2
Nov 4 19:46:51 debian-terminal kernel: [31801.162381] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./G41C-GS, BIOS P1.20 06/01/2012
Nov 4 19:46:51 debian-terminal kernel: [31801.162384] 0000000000000009 ffffffff81474882 0000000000000000 ffffffff81058442
Nov 4 19:46:51 debian-terminal kernel: [31801.162391] ffff8800c7708880 0000000000004120 0000000000000001 0000000000000007
Nov 4 19:46:51 debian-terminal kernel: [31801.162396] 0000000000000000 ffffffff813db5b2 00000000c7708880 ffff8800c7708880
Nov 4 19:46:51 debian-terminal kernel: [31801.162402] Call Trace:
Nov 4 19:46:51 debian-terminal kernel: [31801.162405] <IRQ> [<ffffffff81474882>] ? dump_stack+0x41/0x51
Nov 4 19:46:51 debian-terminal kernel: [31801.162419] [<ffffffff81058442>] ? warn_slowpath_common+0x72/0x90
Nov 4 19:46:51 debian-terminal kernel: [31801.162425] [<ffffffff813db5b2>] ? tcp_fastretrans_alert+0xb72/0xba0
Nov 4 19:46:51 debian-terminal kernel: [31801.162430] [<ffffffff813dc052>] ? tcp_ack+0x9b2/0xf40
Nov 4 19:46:51 debian-terminal kernel: [31801.162436] [<ffffffff813dca71>] ? tcp_rcv_established+0x161/0x840
Nov 4 19:46:51 debian-terminal kernel: [31801.162442] [<ffffffff813e60bf>] ? tcp_v4_do_rcv+0x1af/0x480
Nov 4 19:46:51 debian-terminal kernel: [31801.162446] [<ffffffff813e835b>] ? tcp_v4_rcv+0x66b/0x7c0
Nov 4 19:46:51 debian-terminal kernel: [31801.162454] [<ffffffff813a482f>] ? sk_filter+0x3f/0xb0
Nov 4 19:46:51 debian-terminal kernel: [31801.162461] [<ffffffff813c4e5e>] ? ip_local_deliver_finish+0xbe/0x200
Nov 4 19:46:51 debian-terminal kernel: [31801.162467] [<ffffffff813930a7>] ? __netif_receive_skb_core+0x5e7/0x820
Nov 4 19:46:51 debian-terminal kernel: [31801.162472] [<ffffffff81393354>] ? netif_receive_skb+0x24/0x80
Nov 4 19:46:51 debian-terminal kernel: [31801.162477] [<ffffffff81393ca8>] ? napi_gro_receive+0x68/0x90
Nov 4 19:46:51 debian-terminal kernel: [31801.162490] [<ffffffffa01755eb>] ? rtl8169_poll+0x17b/0x680 [r8169]
Nov 4 19:46:51 debian-terminal kernel: [31801.162496] [<ffffffff81393670>] ? net_rx_action+0x140/0x240
Nov 4 19:46:51 debian-terminal kernel: [31801.162501] [<ffffffff8105d4e6>] ? __do_softirq+0xf6/0x240
Nov 4 19:46:51 debian-terminal kernel: [31801.162507] [<ffffffff814834dc>] ? call_softirq+0x1c/0x30
Nov 4 19:46:51 debian-terminal kernel: [31801.162513] [<ffffffff810143a5>] ? do_softirq+0x55/0x90
Nov 4 19:46:51 debian-terminal kernel: [31801.162518] [<ffffffff8105d785>] ? irq_exit+0x95/0xa0
Nov 4 19:46:51 debian-terminal kernel: [31801.162523] [<ffffffff81013ed9>] ? do_IRQ+0x49/0xb0
Nov 4 19:46:51 debian-terminal kernel: [31801.162528] [<ffffffff8147a2ed>] ? common_interrupt+0x6d/0x6d
Nov 4 19:46:51 debian-terminal kernel: [31801.162530] <EOI> [<ffffffff810472a2>] ? native_safe_halt+0x2/0x10
Nov 4 19:46:51 debian-terminal kernel: [31801.162541] [<ffffffff8101a349>] ? default_idle+0x19/0xa0
Nov 4 19:46:51 debian-terminal kernel: [31801.162547] [<ffffffff810a0ae8>] ? cpu_startup_entry+0xc8/0x270
Nov 4 19:46:51 debian-terminal kernel: [31801.162554] [<ffffffff810a9170>] ? tick_check_new_device+0xd0/0xf0
Nov 4 19:46:51 debian-terminal kernel: [31801.162560] [<ffffffff8103b962>] ? start_secondary+0x1d2/0x230
Nov 4 19:46:51 debian-terminal kernel: [31801.162563] ---[ end trace c4fd91e5a367c70e ]---
When it happens, network seriously lags.
Process name after this "PID: 0 Comm:" may be different.
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