Have being running Ubuntu (9.04 to 9.10) on Toshiba Satellite L40-139 laptop for about a year. Heavy network traffic systematically triggers a crash (either kernel panic or segmentation fault). Among applications that have triggered system crash are: firefox (all versions since 3.2.3), system update manager, a Java-based application downloading via http/ftp as well as bittorrent client and wget. Usually the problem appears within 20-30 min while downloading at speed of 150kBytes/s or more. Just before the moment of crash, tons of messages like: Feb 3 02:30:04 kovalev-home kernel: [35474.511460] recvmsg bug: copied BFA5DAF9 seq BFA5E0A1 fill up system logs on pair with application-related warning. Sometimes (fifty-fifty) there is no immediate crash after warnings have appeared, but part of downloaded data have become corrupt.
The problem has been observed first with kernel 2.6.28-13 but still persists through current 2.6.31-19, all have been installed from official Ubuntu repositories. Network connection is via Atheros AR5007eg wireless (reported as AR5001 by ath5k). I've experienced this issue with several different routers and providers, though have never got a chance to try a wired connection. As Windows Vista had never crashed by similar network traffic on this laptop, the issue doesn't look like a hardware fault... An example of warning message right before crash (triggered by bittorrent client): --------------- Feb 2 12:51:38 kovalev-home kernel: [76478.454177] WARNING: at /build/buildd/linux-2.6.31/net/ipv4/tcp.c:1408 tcp_recvmsg+0xa49/0xb20() Feb 2 12:51:38 kovalev-home kernel: [76478.454179] Hardware name: Satellite L40 Feb 2 12:51:38 kovalev-home kernel: [76478.454181] Modules linked in: sbp2 xt_tcpudp aes_i586 aes_generic binfmt_misc ppdev nls_iso8859_1 nls_cp437 vfat fat joydev snd_hda_codec_analog arc4 ecb pcmcia snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy iptable_filter snd_seq_oss ip_tables x_tables snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device psmouse serio_raw yenta_socket rsrc_nonstatic pcmcia_core snd shpchp ath5k mac80211 ath cfg80211 soundcore snd_page_alloc asus_laptop led_class video1394 raw1394 lp parport usbhid fbcon tileblit font bitblit softcursor 8139too 8139cp mii ohci1394 ieee1394 i915 drm i2c_algo_bit intel_agp agpgart video output Feb 2 12:51:38 kovalev-home kernel: [76478.454230] Pid: 2357, comm: transmission Tainted: G W 2.6.31-18-generic #55-Ubuntu Feb 2 12:51:38 kovalev-home kernel: [76478.454233] Call Trace: Feb 2 12:51:38 kovalev-home kernel: [76478.454237] [<c014513d>] warn_slowpath_common+0x6d/0xa0 Feb 2 12:51:38 kovalev-home kernel: [76478.454242] [<c04d2439>] ? tcp_recvmsg+0xa49/0xb20 Feb 2 12:51:38 kovalev-home kernel: [76478.454245] [<c04d2439>] ? tcp_recvmsg+0xa49/0xb20 Feb 2 12:51:38 kovalev-home kernel: [76478.454250] [<c0145185>] warn_slowpath_null+0x15/0x20 Feb 2 12:51:38 kovalev-home kernel: [76478.454254] [<c04d2439>] tcp_recvmsg+0xa49/0xb20 Feb 2 12:51:38 kovalev-home kernel: [76478.454259] [<c0492433>] sock_common_recvmsg+0x43/0x60 Feb 2 12:51:38 kovalev-home kernel: [76478.454263] [<c04920ac>] sock_aio_read+0x11c/0x130 Feb 2 12:51:38 kovalev-home kernel: [76478.454267] [<c01e78fc>] do_sync_read+0xbc/0x100 Feb 2 12:51:38 kovalev-home kernel: [76478.454272] [<c015c1d0>] ? autoremove_wake_function+0x0/0x40 Feb 2 12:51:38 kovalev-home kernel: [76478.454276] [<c04f02c1>] ? inet_ioctl+0x31/0xb0 Feb 2 12:51:38 kovalev-home kernel: [76478.454280] [<c02cbb7f>] ? security_file_permission+0xf/0x20 Feb 2 12:51:38 kovalev-home kernel: [76478.454284] [<c01e799f>] ? rw_verify_area+0x5f/0xe0 Feb 2 12:51:38 kovalev-home kernel: [76478.454287] [<c0490940>] ? sock_ioctl+0x0/0x260 Feb 2 12:51:38 kovalev-home kernel: [76478.454291] [<c01e7fda>] vfs_read+0x17a/0x190 Feb 2 12:51:38 kovalev-home kernel: [76478.454295] [<c01f5651>] ? do_vfs_ioctl+0x71/0x310 Feb 2 12:51:38 kovalev-home kernel: [76478.454299] [<c0217e0d>] ? sys_epoll_ctl+0x9d/0x240 Feb 2 12:51:38 kovalev-home kernel: [76478.454303] [<c01e850d>] sys_read+0x3d/0x70 Feb 2 12:51:38 kovalev-home kernel: [76478.454307] [<c01033ac>] syscall_call+0x7/0xb Feb 2 12:51:38 kovalev-home kernel: [76478.454309] ---[ end trace 1d3e832a4fd8afb9 ]--- Feb 2 12:51:38 kovalev-home kernel: [76478.454312] recvmsg bug: copied 7B0ADBE3 seq 7B0AE18B --------------- -- Heavy network activity (eg: torrent/nfs file transfers) causes Hard System Locks and/or Network Freezes. https://bugs.launchpad.net/bugs/147464 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
