Заглянул в dmesg, а там... что это?

[ 2262.815175] ------------[ cut here ]------------
[ 2262.815184] WARNING: at net/ipv4/tcp_input.c:2776 tcp_fastretrans_alert+0xac0/0xae0()
[ 2262.815185] Modules linked in: ipv6 lp fuse hid_generic usbhid hid acpi_cpufreq snd_hda_codec_hdmi mperf kvm_amd snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm ppdev kvm processor i2c_dev eeepc_wmi asus_wmi sparse_keymap rfkill video thermal_sys parport_pc freq_table snd_page_alloc snd_timer snd nvidia(PO) k10temp parport fam15h_power sp5100_tco hwmon psmouse drm serio_raw ohci_hcd ati_agp agpgart mxm_wmi i2c_piix4 ehci_pci i2c_core ehci_hcd xhci_hcd r8169 8139too soundcore mii evdev crc32_pclmul wmi crc32c_intel microcode button loop
[ 2262.815212] CPU: 3 PID: 0 Comm: swapper/3 Tainted: P           O 3.10.17-smp #2
[ 2262.815214] Hardware name: To be filled by O.E.M. To be filled by O.E.M./M5A97 R2.0, BIOS 2501 04/07/2014
[ 2262.815215]  00000000 00000000 f310dcd8 c1a8cf65 f310dd00 c103833e c1c193fe c1d0acb3
[ 2262.815218]  00000ad8 c1a0d780 c1a0d780 e7239500 00000000 00004322 f310dd10 c1038402
[ 2262.815220]  00000009 00000000 f310dd34 c1a0d780 00000000 00000000 00000000 00000000
[ 2262.815223] Call Trace:
[ 2262.815227]  [<c1a8cf65>] dump_stack+0x16/0x18
[ 2262.815230]  [<c103833e>] warn_slowpath_common+0x5e/0x80
[ 2262.815231]  [<c1a0d780>] ? tcp_fastretrans_alert+0xac0/0xae0
[ 2262.815233]  [<c1a0d780>] ? tcp_fastretrans_alert+0xac0/0xae0
[ 2262.815235]  [<c1038402>] warn_slowpath_null+0x22/0x30
[ 2262.815236]  [<c1a0d780>] tcp_fastretrans_alert+0xac0/0xae0
[ 2262.815238]  [<c1a0e101>] tcp_ack+0x8b1/0xd00
[ 2262.815240]  [<c1a0e9a4>] tcp_rcv_established+0x144/0x7a0
[ 2262.815243]  [<c19bdaf4>] ? skb_checksum+0x54/0x230
[ 2262.815245]  [<c1a16ea3>] tcp_v4_do_rcv+0xb3/0x280
[ 2262.815248]  [<c14bf734>] ? security_sock_rcv_skb+0x14/0x20
[ 2262.815250]  [<c19db111>] ? sk_filter+0x21/0x90
[ 2262.815251]  [<c1a18da8>] tcp_v4_rcv+0x5d8/0x6e0
[ 2262.815254]  [<c19b4507>] ? raw_pci_read+0x67/0x80
[ 2262.815323]  [<f992c420>] ? _nv012389rm+0x15e0/0x26dc [nvidia]
[ 2262.815358]  [<f9b59fb3>] ? os_acquire_spinlock+0x13/0x20 [nvidia]
[ 2262.815361]  [<c19f82aa>] ip_local_deliver_finish+0x9a/0x230
[ 2262.815362]  [<c19f85bf>] ip_local_deliver+0x7f/0x90
[ 2262.815364]  [<c19f7f50>] ip_rcv_finish+0x60/0x320
[ 2262.815365]  [<c19f8855>] ip_rcv+0x285/0x3a0
[ 2262.815367]  [<c104025a>] ? irq_exit+0x5a/0x90
[ 2262.815370]  [<c19ca457>] __netif_receive_skb_core+0x4c7/0x700
[ 2262.815372]  [<c19ca6ab>] __netif_receive_skb+0x1b/0x60
[ 2262.815373]  [<c19ca717>] netif_receive_skb+0x27/0x80
[ 2262.815377]  [<f8a1008d>] rtl8139_poll+0x15d/0x3b0 [8139too]
[ 2262.815379]  [<c19ca9c8>] net_rx_action+0x108/0x1d0
[ 2262.815381]  [<c1040031>] __do_softirq+0xc1/0x1d0
[ 2262.815383]  [<c103ff70>] ? send_remote_softirq+0x30/0x30
[ 2262.815384]  <IRQ>  [<c1040285>] ? irq_exit+0x85/0x90
[ 2262.815387]  [<c1a95a15>] ? do_IRQ+0x45/0xb0
[ 2262.815389]  [<c1a958b3>] ? common_interrupt+0x33/0x38
[ 2262.815391]  [<c19888ac>] ? cpuidle_enter_state+0x3c/0xb0
[ 2262.815393]  [<c19889c2>] ? cpuidle_idle_call+0xa2/0x1b0
[ 2262.815396]  [<c100968d>] ? arch_cpu_idle+0xd/0x30
[ 2262.815398]  [<c107f7fb>] ? cpu_startup_entry+0x9b/0x1e0
[ 2262.815400]  [<c1a8257f>] ? setup_APIC_timer+0xd0/0xd5
[ 2262.815402]  [<c1a81b02>] ? start_secondary+0x1df/0x1e5
[ 2262.815403] ---[ end trace af65928d40c5c5e0 ]---