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Thomas,
Got the below warning/traceback on 2.6.29.1-rt6. This is running on my
T60, 64-bit kernel. Haven't been able to figure out how to trigger it
yet.
$ uname -a
Linux torg 2.6.29.1-rt6 #20 SMP PREEMPT RT Thu Apr 9 15:30:06 CDT 2009
x86_64 x86_64 x86_64 GNU/Linux
Clark
- ------------[ cut here ]------------
WARNING: at kernel/futex.c:184 drop_futex_key_refs+0x7e/0x111()
Hardware name:
Modules linked in: tun fuse i915 drm i2c_algo_bit sunrpc ip6t_REJECT nf_conntrack_ipv6 ip6table_filter ip6_tables ipv6 cpufreq_ondemand acpi_cpufreq freq_table loop dm_multipath scsi_dh uinput snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq arc4 ecb snd_seq_device iwl3945 snd_pcm_oss mac80211 btusb snd_mixer_oss snd_pcm snd_timer sr_mod iTCO_wdt snd cdrom lib80211 pl2303 iTCO_vendor_support video bluetooth yenta_socket ata_generic joydev pcspkr usbserial ata_piix soundcore i2c_i801 i2c_core cfg80211 rsrc_nonstatic e1000e sg ati_remote thinkpad_acpi rfkill hwmon output snd_page_alloc dm_snapshot dm_zero dm_mirror dm_region_hash dm_log dm_mod ahci libata sd_mod scsi_mod uhci_hcd ohci_hcd ssb [last unloaded: microcode]
Pid: 12898, comm: sbcl Not tainted 2.6.29.1-rt6 #20
Call Trace:
[<ffffffff81065411>] warn_slowpath+0xe2/0x116
[<ffffffff8109e00a>] ? __lock_release+0x10c/0x125
[<ffffffff8100ce96>] ? ftrace_call+0x5/0x2b
[<ffffffff8152078b>] ? rt_mutex_unlock+0x47/0x67
[<ffffffff810a7414>] ? rt_up_read+0x2b/0x2f
[<ffffffff81044bbb>] ? get_user_pages_fast+0x1e4/0x235
[<ffffffff8100ce96>] ? ftrace_call+0x5/0x2b
[<ffffffff810a023d>] drop_futex_key_refs+0x7e/0x111
[<ffffffff810a04b9>] futex_wait_setup+0x1e9/0x1fb
[<ffffffff8100ce96>] ? ftrace_call+0x5/0x2b
[<ffffffff810a08ee>] futex_wait+0x13f/0x2ce
[<ffffffff8101573b>] ? sched_clock+0x42/0x48
[<ffffffff8109b621>] ? lock_release_holdtime+0x18d/0x192
[<ffffffff8109e00a>] ? __lock_release+0x10c/0x125
[<ffffffff8100ce96>] ? ftrace_call+0x5/0x2b
[<ffffffff81086896>] ? __wake_up_bit+0xd/0x51
[<ffffffff811052c1>] ? page_waitqueue+0x9/0x68
[<ffffffff811072f2>] ? unlock_page+0x27/0x2b
[<ffffffff8109c92e>] ? __lock_acquire+0x659/0x744
[<ffffffff81527701>] ? do_page_fault+0x7e2/0x80d
[<ffffffff810157cd>] ? native_sched_clock+0x8c/0xba
[<ffffffff8101573b>] ? sched_clock+0x42/0x48
[<ffffffff8109b621>] ? lock_release_holdtime+0x18d/0x192
[<ffffffff8105b130>] ? default_wake_function+0x0/0x16
[<ffffffff8100ce96>] ? ftrace_call+0x5/0x2b
[<ffffffff810a4937>] do_futex+0xaa/0x1d1
[<ffffffff810a4c2b>] sys_futex+0x1cd/0x1dc
[<ffffffff8100d1b2>] system_call_fastpath+0x16/0x1b
- ---[ end trace 384450cb13d7d800 ]---
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