I'm getting plenty of dmesg errors in 2.6.31.12-rt20, a stock 2.6.31.12 with rt20 patch applied. Reviewing lkml (google pointed me that way, not surprisingly), I see that it's been happening variously for a few years. My first theory is that it is started by X somehow. I noted the "tainted" in the output, so I do have to mention I have nvidia driver 190.53-r1 installed. It happened first at 3266.451642 seconds kernel running, at Feb 13 13:25:04. Looking for processes aged that much, I see that "kdm" started at 13:23, and some others: ps -ax -Obsdstart [...] 11843 13:23 S ? 00:00:00 kdm 11847 13:23 S tty6 00:01:56 \_ X 11851 13:23 S ? 00:00:00 \_ kdm 11876 13:23 S ? 00:00:00 \_ eternity 11859 13:23 S ? 00:00:00 dbus-launch 11860 13:23 S ? 00:00:00 dbus-daemon 11937 13:23 R ? 01:01:26 lwm [...] It happened well after I loaded the nvidia driver, but perhaps using it is what causes it, since it happened first two minutes after starting X. The fact that the kernel ran for 3266.451641 seconds without trouble then suddenly starts having lots of them when X starts indicates that X is very related to the problem. I left a copy of various output at <http://tinyurl.com/yhayonp/>, including dmesg, kernel log, config, lsmod, and the above ps. Here's one excerpt: [16130.519908] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684 [16130.519913] in_atomic(): 1, irqs_disabled(): 1, pid: 23, name: sirq-tasklet/1 [16130.519918] Pid: 23, comm: sirq-tasklet/1 Tainted: P 2.6.31.12-rt20-rtulmo #35 [16130.519921] Call Trace: [16130.519926] [<ffffffff8103d647>] 0xffffffff8103d647 [16130.519930] [<ffffffff813f4c94>] 0xffffffff813f4c94 [16130.519934] [<ffffffff810412f0>] 0xffffffff810412f0 [16130.519943] [<ffffffffa06e7bef>] 0xffffffffa06e7bef [16130.519946] [<ffffffffa0600b4f>] 0xffffffffa0600b4f [16130.519950] [<ffffffffa0386118>] ? 0xffffffffa0386118 [16130.519954] [<ffffffffa0573672>] ? 0xffffffffa0573672 [16130.519958] [<ffffffffa057363e>] ? 0xffffffffa057363e [16130.519962] [<ffffffffa04b825a>] ? 0xffffffffa04b825a [16130.519965] [<ffffffffa04b7f1e>] ? 0xffffffffa04b7f1e [16130.519969] [<ffffffffa0544b15>] ? 0xffffffffa0544b15 [16130.519973] [<ffffffffa0543fc6>] ? 0xffffffffa0543fc6 [16130.519977] [<ffffffffa0602bc0>] ? 0xffffffffa0602bc0 [16130.519980] [<ffffffffa0608853>] ? 0xffffffffa0608853 [16130.519984] [<ffffffffa06e8e52>] ? 0xffffffffa06e8e52 [16130.519988] [<ffffffff81051942>] ? 0xffffffff81051942 [16130.519991] [<ffffffff81051af0>] ? 0xffffffff81051af0 [16130.519995] [<ffffffff81051637>] ? 0xffffffff81051637 [16130.519998] [<ffffffff810514cf>] ? 0xffffffff810514cf [16130.520002] [<ffffffff810514cf>] ? 0xffffffff810514cf [16130.520005] [<ffffffff8106436d>] ? 0xffffffff8106436d [16130.520009] [<ffffffff8100ceca>] ? 0xffffffff8100ceca [16130.520013] [<ffffffff810642cf>] ? 0xffffffff810642cf [16130.520017] [<ffffffff8100cec0>] ? 0xffffffff8100cec0 Here's lsmod: Module Size Used by sit 8668 0 tunnel4 1880 1 sit cifs 198800 2 dahdi_dummy 2072 0 wctdm 32656 0 wcfxo 8832 0 wcte11xp 21312 0 wct1xxp 12608 0 wct4xxp 307152 0 dahdi 187392 8 dahdi_dummy,wctdm,wcfxo,wcte11xp,wct1xxp,wct4xxp crc_ccitt 1192 1 dahdi ipv6 243984 41 sit iptable_raw 1032 0 xt_state 1144 24 iptable_filter 1256 1 ipt_MASQUERADE 1384 1 xt_tcpudp 2168 56 iptable_nat 3256 1 nf_nat 13092 2 ipt_MASQUERADE,iptable_nat nf_conntrack_ipv4 9392 27 iptable_nat,nf_nat nf_conntrack 47424 5 xt_state,ipt_MASQUERADE,iptable_nat,nf_nat,nf_conntrack_ipv4 nf_defrag_ipv4 936 1 nf_conntrack_ipv4 iptable_mangle 1528 0 ip_tables 13480 4 iptable_raw,iptable_filter,iptable_nat,iptable_mangle x_tables 12640 5 xt_state,ipt_MASQUERADE,xt_tcpudp,iptable_nat,ip_tables snd_pcm_oss 30224 0 snd_mixer_oss 12072 1 snd_pcm_oss snd_seq_oss 22688 0 snd_seq_midi_event 4424 1 snd_seq_oss snd_seq 40384 4 snd_seq_oss,snd_seq_midi_event snd_seq_device 4348 2 snd_seq_oss,snd_seq nvidia 8760488 28 snd_hda_codec_realtek 230412 1 snd_hda_intel 17480 0 snd_hda_codec 44872 2 snd_hda_codec_realtek,snd_hda_intel snd_hwdep 5216 1 snd_hda_codec snd_pcm 54432 3 snd_pcm_oss,snd_hda_intel,snd_hda_codec snd_timer 15456 2 snd_seq,snd_pcm snd 44504 11 snd_pcm_oss,snd_mixer_oss,snd_seq_oss,snd_seq,snd_seq_device,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_timer rtc_cmos 7628 0 uhci_hcd 18240 0 rtc_core 12116 1 rtc_cmos i2c_i801 7396 0 r8169 27004 0 soundcore 4272 1 snd intel_agp 23216 0 pcspkr 1528 0 snd_page_alloc 5800 2 snd_hda_intel,snd_pcm i2c_core 14656 2 nvidia,i2c_i801 sg 21472 0 floppy 48760 0 rtc_lib 1608 1 rtc_core processor 28756 2 button 3912 0 thermal 11368 0 btrfs 369904 2 libcrc32c 784 1 btrfs crc32c 2424 1 zlib_deflate 17912 1 btrfs dm_snapshot 18184 8 dm_mirror 11088 13 dm_region_hash 6488 1 dm_mirror dm_log 7256 15 dm_mirror,dm_region_hash sata_nv 19060 0 dm_crypt 9952 3 dm_mod 53192 298 dm_snapshot,dm_mirror,dm_log,dm_crypt ohci_hcd 20404 0 ssb 31240 1 ohci_hcd pcmcia 26140 1 ssb firmware_class 5880 2 wct4xxp,pcmcia pcmcia_core 24100 2 ssb,pcmcia usb_storage 38112 0 ehci_hcd 29640 0 -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
