[Bug 543751] Re: WARNING: at /build/buildd/linux-2.6.32/net/ipv4/tcp.c:1439 tcp_recvmsg+0x43a/0xbd0()

figvam figvam+launchpad at gmail.com
Mon Jun 21 15:38:04 UTC 2010


I see a huge pile of these warnings in the kernel log. Hardware is Acer Aspire One A110, running Ubuntu 10.04, upgraded over the net from the initial 8.04 where I didn't see this issue.
Here is one example:

Jun 21 18:57:50 luba-laptop kernel: [ 4150.200001] ------------[ cut here ]------------
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200011] WARNING: at /build/buildd/linux-2.6.32/net/ipv4/tcp.c:1439 tcp_recvmsg+0x43a/0xbd0()
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200018] Hardware name: AOA110
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200025] recvmsg bug: copied 4CD72B6A seq 4CD730AE rcvnxt 4CDA2FD2 fl 0
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200033] Modules linked in: usb_storage aes_i586 aes_generic binfmt_misc snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss fbcon tileblit font bitblit arc4 softcursor snd_seq_midi joydev vga16fb vgastate snd_rawmidi ath5k snd_seq_midi_event i915 snd_seq mac80211 drm_kms_helper snd_timer snd_seq_device ath drm acerhdf snd uvcvideo i2c_algo_bit intel_agp lp soundcore cfg80211 psmouse video videodev agpgart v4l1_compat serio_raw output snd_page_alloc led_class parport r8169 mii
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200148] Pid: 1795, comm: http Tainted: G        W  2.6.32-22-generic #36-Ubuntu
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200155] Call Trace:
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200168]  [<c014c3d2>] warn_slowpath_common+0x72/0xa0
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200179]  [<c04f7d3a>] ? tcp_recvmsg+0x43a/0xbd0
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200188]  [<c04f7d3a>] ? tcp_recvmsg+0x43a/0xbd0
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200199]  [<c014c44b>] warn_slowpath_fmt+0x2b/0x30
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200209]  [<c04f7d3a>] tcp_recvmsg+0x43a/0xbd0
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200223]  [<c04b5158>] sock_common_recvmsg+0x48/0x60
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200233]  [<c04b4db4>] sock_aio_read+0x124/0x130
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200247]  [<c0207a34>] do_sync_read+0xc4/0x100
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200259]  [<c0167740>] ? autoremove_wake_function+0x0/0x50
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200270]  [<c0171ba5>] ? ktime_get_ts+0xe5/0x110
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200284]  [<c02f4414>] ? security_file_permission+0x14/0x20
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200295]  [<c0207ad4>] ? rw_verify_area+0x64/0xe0
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200306]  [<c02084b2>] vfs_read+0x182/0x1a0
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200316]  [<c0208582>] sys_read+0x42/0x70
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200326]  [<c01033ec>] syscall_call+0x7/0xb
Jun 21 18:57:50 luba-laptop kernel: [ 4150.200335] ---[ end trace 605977c8caded8b7 ]---

Here's how bad it is during the network activity:

# dmesg|grep WARNING
[ 4150.172263] WARNING: at /build/buildd/linux-2.6.32/net/ipv4/tcp.c:1452 tcp_recvmsg+0xb0b/0xbd0()
[ 4150.172629] WARNING: at /build/buildd/linux-2.6.32/net/ipv4/tcp.c:1439 tcp_recvmsg+0x43a/0xbd0()
[ 4150.173042] WARNING: at /build/buildd/linux-2.6.32/net/ipv4/tcp.c:1452 tcp_recvmsg+0xb0b/0xbd0()
[ 4150.173399] WARNING: at /build/buildd/linux-2.6.32/net/ipv4/tcp.c:1439 tcp_recvmsg+0x43a/0xbd0()
[ 4150.173773] WARNING: at /build/buildd/linux-2.6.32/net/ipv4/tcp.c:1452 tcp_recvmsg+0xb0b/0xbd0()
[ 4150.174137] WARNING: at /build/buildd/linux-2.6.32/net/ipv4/tcp.c:1439 tcp_recvmsg+0x43a/0xbd0()
[ 4150.174518] WARNING: at /build/buildd/linux-2.6.32/net/ipv4/tcp.c:1452 tcp_recvmsg+0xb0b/0xbd0()
[ 4150.174885] WARNING: at /build/buildd/linux-2.6.32/net/ipv4/tcp.c:1439 tcp_recvmsg+0x43a/0xbd0()
[ 4150.175271] WARNING: at /build/buildd/linux-2.6.32/net/ipv4/tcp.c:1452 tcp_recvmsg+0xb0b/0xbd0()
[ 4150.175638] WARNING: at /build/buildd/linux-2.6.32/net/ipv4/tcp.c:1439 tcp_recvmsg+0x43a/0xbd0()
[ 4150.176024] WARNING: at /build/buildd/linux-2.6.32/net/ipv4/tcp.c:1452 tcp_recvmsg+0xb0b/0xbd0()
[ 4150.176388] WARNING: at /build/buildd/linux-2.6.32/net/ipv4/tcp.c:1439 tcp_recvmsg+0x43a/0xbd0()
[ 4150.176772] WARNING: at /build/buildd/linux-2.6.32/net/ipv4/tcp.c:1452 tcp_recvmsg+0xb0b/0xbd0()
[ 4150.177170] WARNING: at /build/buildd/linux-2.6.32/net/ipv4/tcp.c:1439 tcp_recvmsg+0x43a/0xbd0()
....

I can provide other information and logs if needed.

** Changed in: linux (Ubuntu)
       Status: Incomplete => New

-- 
WARNING: at /build/buildd/linux-2.6.32/net/ipv4/tcp.c:1439 tcp_recvmsg+0x43a/0xbd0()
https://bugs.launchpad.net/bugs/543751
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