On Mon, Mar 28, 2011 at 5:11 PM, Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> wrote: > On Mon, Mar 28, 2011 at 06:24:36AM -0700, Paul E. McKenney wrote: >> On Mon, Mar 28, 2011 at 02:33:36PM +0200, Sedat Dilek wrote: >> > On Mon, Mar 28, 2011 at 6:08 AM, Paul E. McKenney >> > <paulmck@xxxxxxxxxxxxxxxxxx> wrote: >> > > On Sun, Mar 27, 2011 at 11:48:30PM +0200, Sedat Dilek wrote: >> > >> On Sun, Mar 27, 2011 at 11:32 PM, Paul E. McKenney >> > >> <paulmck@xxxxxxxxxxxxxxxxxx> wrote: >> > >> > On Sun, Mar 27, 2011 at 02:26:15PM +0200, Sedat Dilek wrote: >> > >> >> On Sun, Mar 27, 2011 at 7:07 AM, Paul E. McKenney >> > >> >> <paulmck@xxxxxxxxxxxxxxxxxx> wrote: >> > >> >> > On Sat, Mar 26, 2011 at 08:25:29PM -0700, Paul E. McKenney wrote: >> > >> >> >> On Sun, Mar 27, 2011 at 03:30:34AM +0200, Sedat Dilek wrote: >> > >> >> >> > On Sun, Mar 27, 2011 at 1:09 AM, Paul E. McKenney >> > >> >> >> > <paulmck@xxxxxxxxxxxxxxxxxx> wrote: >> > >> >> >> > > On Sat, Mar 26, 2011 at 11:15:22PM +0100, Sedat Dilek wrote: >> > >> >> > >> > >> >> > [ . . . ] >> > >> >> > >> > >> >> >> > >> But then came RCU :-(. >> > >> >> >> > > >> > >> >> >> > > Well, if it turns out to be a problem in RCU I will certainly apologize. >> > >> >> >> > > >> > >> >> >> > >> > >> >> >> > No, that's not so dramatic. >> > >> >> >> > Dealing with this RCU issue has nice side-effects: I remembered (and >> > >> >> >> > finally did) to use a reduced kernel-config set. >> > >> >> >> > The base for it I created with 'make localmodconfig' and did some >> > >> >> >> > manual fine-tuning afterwards (throw out media, rc, dvd, unneeded FSs, >> > >> >> >> > etc.). >> > >> >> >> > Also, I can use fresh gcc-4.6 (4.6.0-1) from the official Debian repos. >> > >> >> >> > >> > >> >> >> > So, I started building with >> > >> >> >> > "revert-rcu-patches/0001-Revert-rcu-introduce-kfree_rcu.patch". >> > >> >> >> > I will let you know. >> > >> >> >> >> > >> >> >> And please also check for tasks consuming all available CPU. >> > >> >> > >> > >> >> > And I still cannot reproduce with the full RCU stack (but based off of >> > >> >> > 2.6.38 rather than -next). ÂNevertheless, if you would like to try a >> > >> >> > speculative patch, here you go. >> > >> >> >> > >> >> You are right and my strategy on handling the (possible RCU?) issue is wrong. >> > >> >> Surely, you tested your RCU stuff in your own repo and everything >> > >> >> might be OK on top of stable 2.6.38. >> > >> >> Linux-next gets daily updates from a lot of different trees, so there >> > >> >> might be interferences with other stuff. >> > >> >> Please, understand I am interested in finding out what is the cause >> > >> >> for my issues, my aim is not to blame you. >> > >> > >> > >> > I am not worried about blame, but rather getting the bug fixed. ÂThe >> > >> > bug might be in RCU, it might be elsewhere, or it might be a combination >> > >> > of problems in RCU and elsewhere. >> > >> > >> > >> > So the first priority is locating the bug. >> > >> > >> > >> > And that is why I have been asking you over and over to PLEASE take >> > >> > a look at what tasks are consuming CPU while the problem is occuring. >> > >> > The reason that I have been asking over and over is that the symptoms >> > >> > you describe are likely caused by a loop in some kernel code. ÂYes, >> > >> > there might be other causes, but this is the most likely. ÂGiven that >> > >> > TREE_PREEMPT_RCU behaves better than TREE_RCU, it is likely that this >> > >> > loop is in preemptible code with irqs enabled. ÂTherefore, the process >> > >> > accounting code is likely to be able to see the CPU consumption, and >> > >> > you should be able to see it via the "top" or "ps" commands -- or via >> > >> > any number of other tools. >> > >> > >> > >> > For example, if the problem is confined to RCU, you would likely see >> > >> > the "rcuc0" or "rcun0" tasks consuming lots of CPU. ÂThis would narrow >> > >> > the problem down to a few tens of lines of code. ÂIf the problem was >> > >> > in some other kthread, then identifying the kthread would very likely >> > >> > narrow things down as well. >> > >> > >> > >> > So, please do take a look to see what taks consuming CPU. >> > >> > >> > >> >> As I was wrong and want to be 99.9% sure it is RCU stuff, I reverted >> > >> >> all (18) RCU patches from linux-next (next-20110325) by keeping the >> > >> >> RCU|PREEMPT|HZ settings from last working next-20110323. >> > >> > >> > >> > Makes sense. >> > >> > >> > >> >> $ egrep 'RCU|PREEMPT|_HZ' /boot/config-2.6.38-next20110325-7-686-iniza >> > >> >> # RCU Subsystem >> > >> >> CONFIG_TREE_RCU=y >> > >> >> # CONFIG_PREEMPT_RCU is not set >> > >> >> # CONFIG_RCU_TRACE is not set >> > >> >> CONFIG_RCU_FANOUT=32 >> > >> >> # CONFIG_RCU_FANOUT_EXACT is not set >> > >> >> CONFIG_RCU_FAST_NO_HZ=y >> > >> >> # CONFIG_TREE_RCU_TRACE is not set >> > >> >> CONFIG_PREEMPT_NOTIFIERS=y >> > >> >> CONFIG_NO_HZ=y >> > >> >> # CONFIG_PREEMPT_NONE is not set >> > >> >> CONFIG_PREEMPT_VOLUNTARY=y >> > >> >> # CONFIG_PREEMPT is not set >> > >> >> # CONFIG_HZ_100 is not set >> > >> >> CONFIG_HZ_250=y >> > >> >> # CONFIG_HZ_300 is not set >> > >> >> # CONFIG_HZ_1000 is not set >> > >> >> CONFIG_HZ=250 >> > >> >> # CONFIG_SPARSE_RCU_POINTER is not set >> > >> >> # CONFIG_RCU_TORTURE_TEST is not set >> > >> >> # CONFIG_RCU_CPU_STALL_DETECTOR is not set >> > >> >> >> > >> >> I will work and stress this kernel before doing any step-by-step >> > >> >> revert of RCU stuff. >> > >> >> >> > >> >> Thanks for your patch, I applied it on top of "naked" next-20110325, >> > >> >> but I still see call-traces. >> > >> > >> > >> > Thank you very much for testing it! >> > >> > >> > >> > I intend to keep that patch, as it should increase robustness in other >> > >> > situations. >> > >> > >> > >> > Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ÂThanx, Paul >> > >> > >> > >> >> - Sedat - >> > >> >> >> > >> >> >> > >> >> >> > >> >> > Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ÂThanx, Paul >> > >> >> > >> > >> >> > ------------------------------------------------------------------------ >> > >> >> > >> > >> >> > rcu: further lower priority in rcu_yield() >> > >> >> > >> > >> >> > Although rcu_yield() dropped from real-time to normal priority, there >> > >> >> > is always the possibility that the competing tasks have been niced. >> > >> >> > So nice to 19 in rcu_yield() to help ensure that other tasks have a >> > >> >> > better chance of running. >> > >> >> > >> > >> >> > Â ÂSigned-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> >> > >> >> > >> > >> >> > diff --git a/kernel/rcutree.c b/kernel/rcutree.c >> > >> >> > index 759f54b..5477764 100644 >> > >> >> > --- a/kernel/rcutree.c >> > >> >> > +++ b/kernel/rcutree.c >> > >> >> > @@ -1492,6 +1492,7 @@ static void rcu_yield(void (*f)(unsigned long), unsigned long arg) >> > >> >> > Â Â Â Âmod_timer(&yield_timer, jiffies + 2); >> > >> >> > Â Â Â Âsp.sched_priority = 0; >> > >> >> > Â Â Â Âsched_setscheduler_nocheck(current, SCHED_NORMAL, &sp); >> > >> >> > + Â Â Â set_user_nice(current, 19); >> > >> >> > Â Â Â Âschedule(); >> > >> >> > Â Â Â Âsp.sched_priority = RCU_KTHREAD_PRIO; >> > >> >> > Â Â Â Âsched_setscheduler_nocheck(current, SCHED_FIFO, &sp); >> > >> >> > >> Sorry, my attempt was to identify and isolate the culprit commit. >> > >> >> > >> Reverting all RCU patches resulted in a stable system, the following 8 >> > >> kernels with reduced k-config setup where all built using this kernel. >> > >> >> > >> All kernels used TREE_RCU (see above), I did not change it (no >> > >> mixing/switching to PREEMPT and TREE_PREEMPT_RCU). >> > >> ( I doubt that TREE_PREEMPT_RCU was some kind of more stable here. ) >> > >> >> > >> The culprit commit is bc56163ebd4580199ac7e63f5e160bf139ba0dd6 (from >> > >> rcu/next GIT tree): >> > >> "rcu: move TREE_RCU from softirq to kthread" >> > > >> > >> > Hi Paul, >> > >> > > OK, please accept my apologies for your lost weekend. ÂAnd thank you for >> > > testing this. >> > > >> > >> > No worries, it was mostly a rainy day. >> > The only thing I did @ 16:30 was to go to regional election (the new >> > (regional) prime minister will be the 1st from The German Green >> > party). >> >> ;-) >> >> > But back to RCU :-): >> > The reduced kernel-config setup decreased the build-time from approx. >> > 2hrs (full, generic build) down to approx. 35mins. >> >> Very good! >> >> > >> I can do parallelly a tar job, open 20 tabs in firefox and run a flash >> > >> video in one of them (I did this several times). >> > > >> > > How many files in the tar job? ÂIs this creating a tar archive, expanding >> > > it, or both? >> > >> > I am doing a simple tar (filesize: 1.6G for full and 1.0G for reduced build): >> > >> > $ tar -cf $archivedir-on-external-usbhdd/$tarfile $kernel-build-dir >> >> OK, I was extracting a tarball and then removing the resulting source >> tree. ÂI will try this. ÂThough it does seem strange -- I can understand >> how removing a file tree would stress RCU, but not creating a tarball. >> Ah, well, if I fully understood it, there would not be a bug. >> >> > ...plus parallelly opening 20 tabs in firefox. >> > That's normally enough to get my system freaky and see RCU related >> > messages in the logs. >> >> Hmmm... ÂMy normal test systems don't have X -- I will need to set >> this up. >> >> > > Do you have a script for this? ÂAre all of these running at normal >> > > priority, or are some of them running at real-time priority? >> > > >> > >> > Nothing special. >> >> OK. >> >> > >> [ setup.log ] >> > >> ... >> > >> Â (+) OK Â revert-rcu-patches/0001-Revert-rcu-introduce-kfree_rcu.patch >> > >> Â (+) OK Â revert-rcu-patches/0002-Revert-rcu-fix-spelling.patch >> > >> Â (+) OK Â revert-rcu-patches/0003-Revert-rcu-fix-rcu_cpu_kthread_task-synchronization.patch >> > >> Â (+) OK Â revert-rcu-patches/0004-Revert-rcu-call-__rcu_read_unlock-in-exit_rcu-for-tr.patch >> > >> Â (+) OK Â revert-rcu-patches/0005-Revert-rcu-Converge-TINY_RCU-expedited-and-normal-bo.patch >> > >> Â (+) OK Â revert-rcu-patches/0006-Revert-rcu-remove-useless-boosted_this_gp-field.patch >> > >> Â (+) OK Â revert-rcu-patches/0007-Revert-rcu-code-cleanups-in-TINY_RCU-priority-boosti.patch >> > >> Â (+) OK Â revert-rcu-patches/0008-Revert-rcu-Switch-to-this_cpu-primitives.patch >> > >> Â (+) OK Â revert-rcu-patches/0009-Revert-rcu-Use-WARN_ON_ONCE-for-DEBUG_OBJECTS_RCU_HE.patch >> > >> Â (+) OK Â revert-rcu-patches/0010-Revert-rcu-Enable-DEBUG_OBJECTS_RCU_HEAD-from-PREEMP.patch >> > >> Â (+) OK Â revert-rcu-patches/0011-Revert-rcu-Add-boosting-to-TREE_PREEMPT_RCU-tracing.patch >> > >> Â (+) OK Â revert-rcu-patches/0012-Revert-rcu-eliminate-unused-boosting-statistics.patch >> > >> Â (+) OK Â revert-rcu-patches/0013-Revert-rcu-priority-boosting-for-TREE_PREEMPT_RCU.patch >> > >> Â (+) OK Â revert-rcu-patches/0014-Revert-rcu-move-TREE_RCU-from-softirq-to-kthread.patch >> > >> ... >> > >> >> > >> Hope this helps to narrow down the problem. >> > >> >> > >> As I kept all kernels I can have a look at the tasks consuming high >> > >> CPU usage tomorrow. >> > > >> > > Could you please? >> > >> > I recalled (as you say I requested over and over again from you :-)) I >> > looked with top, htop and 'ps axu', but there was nothing special. >> > Sometimes the system got frozen - at this point (or short before) I >> > did not see anything suspicious with top. >> >> OK, thank you for the info. >> >> > > Also, could you please mount debugfs and list out the files in the >> > > "rcu" directory? ÂThe "ql=" value from the "rcu/rcudata" file is of >> > > particular interest. >> > > >> > >> > Ah, before I forget... >> > >> > I used TREE_RCU (was the default before noticing RCU issue) for >> > finding the culprit commit. >> > If it is from your POV more helpful to switch to PREEMPT + PREEMPT_RCU >> > + RCU_BOOST, please let me *now* know. >> > ( Both RCU setups freaks up the system. ) >> >> If TREE_RCU hits problems faster, it is probably best to stay with >> TREE_RCU. > > And of course, one exception to this advice is if TREE_RCU hangs so hard > and fast that you don't have time to get any diagnostics. ÂIf this is the > case, then TREE_PREEMPT_RCU might be more productive. > OK, that would somehow explain why I could not really get some debug infos when doing "my stress-test" and checking via: $ LC_ALL=C tail -f /sys/kernel/debug/rcu/rcudata Then I remembered I saw a snippet for a RCU torture script mentionned in the kernel-docs (see Documentation/RCU/torture.txt). 189 The following script may be used to torture RCU: 190 191 #!/bin/sh 192 193 modprobe rcutorture 194 sleep 100 195 rmmod rcutorture 196 dmesg | grep torture: So, I recompiled a new TREE_RC-based kernel and build with CONFIG_RCU_TORTURE_TEST=m. Unfortunately, the rmmod (I prefer modprobe -r -v) hangs... the messages in the logs look promising. - Sedat - > Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ÂThanx, Paul > >> > I think top & Co. are not enough to track the problem down. >> > I have seen tracing and debugging facililities for RCU. >> > >> > Some questions to debug and trace setup: >> > >> > Case #1: TREE_RCU >> > >> > CONFIG_RCU_TRACE=y >> > CONFIG_TREE_RCU_TRACE=y >> >> Yep. >> >> > Case #2: PREEMPT + PREEMPT_RCU + RCU_BOOST >> > >> > CONFIG_RCU_TRACE=y >> > CONFIG_TREE_RCU_TRACE=y >> > CONFIG_DEBUG_PREEMPT=y <--- Helpful? >> > CONFIG_PREEMPT_TRACER=y <--- Helpful? >> > >> > Any other recommends for useful/helpful trace and/or debug options? >> > >> > Any other intructions for debugging/tracing? >> >> Not at the moment. ÂI will be looking at diagnostics will going >> through the code, so might have something later. >> >> > BTW, today's linux-next (next-20110328) is still freaky, I applied the >> > revert-rcu-patches patchset and all is fine. >> >> I reverted back to the commit preceding the one you pointed out last night >> my time, so the upcoming -next should be less freaky. >> >> > - Sedat - >> > >> > P.S.: Note to myself >> > >> > # mount -t debugfs none /sys/kernel/debug/ >> > # ln -s /sys/kernel/debug /debug >> > >> > # find /debug -name rcu >> >> Or: >> >> # cd /debug/rcu >> >> then dump out everything except for the .csv file (which is the same >> as the non-.csv equivalent, but in spreadsheet format -- intended >> for systems with 100s or 1000s of CPUs). >> >> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Thanx, Paul >
Mar 28 18:12:03 tbox kernel: [ 325.716030] INFO: rcu_sched_state detected stall on CPU 0 (t=60030 jiffies) Mar 28 18:12:03 tbox kernel: [ 325.720011] sending NMI to all CPUs: Mar 28 18:12:03 tbox kernel: [ 325.720011] NMI backtrace for cpu 0 Mar 28 18:12:03 tbox kernel: [ 325.720011] Modules linked in: rcutorture(-) acpi_cpufreq mperf cpufreq_powersave cpufreq_userspace cpufreq_stats cpufreq_conservative ppdev lp aes_i586 aes_generic rfcomm bnep bluetooth binfmt_misc fuse snd_intel8x0m snd_intel8x0 snd_ac97_codec radeon ac97_bus snd_pcm_oss arc4 snd_mixer_oss ecb ath5k joydev snd_pcm thinkpad_acpi pcmcia snd_seq_midi ath ttm mac80211 snd_rawmidi drm_kms_helper drm cfg80211 yenta_socket snd_seq_midi_event pcmcia_rsrc snd_seq pcmcia_core snd_timer i2c_algo_bit rfkill snd_seq_device psmouse snd nsc_ircc tpm_tis parport_pc battery ac pcspkr tpm irda i2c_i801 shpchp serio_raw tpm_bios soundcore processor i2c_core evdev pci_hotplug snd_page_alloc crc_ccitt parport nvram power_supply video button ext4 mbcache jbd2 crc16 dm_mod usbhid hid usb_storage uas sg sr_mod sd_mod cdrom crc_t10dif ata_generic ata_piix uhci_hcd libata ehci_hcd scsi_mod usbcore e1000 thermal thermal_sys floppy [last unloaded: scsi_wait_scan] Mar 28 18:12:03 tbox kernel: [ 325.720011] Mar 28 18:12:03 tbox kernel: [ 325.720011] Pid: 0, comm: swapper Not tainted 2.6.38-next20110328-3-686-iniza #1 IBM 2374SG6/2374SG6 Mar 28 18:12:03 tbox kernel: [ 325.720011] EIP: 0060:[<c114b94a>] EFLAGS: 00000807 CPU: 0 Mar 28 18:12:03 tbox kernel: [ 325.720011] EIP is at delay_tsc+0x0/0x5e Mar 28 18:12:03 tbox kernel: [ 325.720011] EAX: 00090d40 EBX: 00002710 ECX: c132e541 EDX: 00090d3f Mar 28 18:12:03 tbox kernel: [ 325.720011] ESI: c13d7500 EDI: c13d7580 EBP: f6019ea4 ESP: f6019ea0 Mar 28 18:12:03 tbox kernel: [ 325.720011] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Mar 28 18:12:03 tbox kernel: [ 325.720011] Process swapper (pid: 0, ti=f6018000 task=c13ccfa0 task.ti=c13a0000) Mar 28 18:12:03 tbox kernel: [ 325.720011] Stack: Mar 28 18:12:03 tbox kernel: [ 325.720011] c114b90f f6019eac c114b92b f6019eb8 c10164ca c13d7500 f6019ed4 c1074e8d Mar 28 18:12:03 tbox kernel: [ 325.720011] c133c4ef c133c5be 00000000 0000ea7e f6403488 f6019ee8 c1074f02 00000000 Mar 28 18:12:03 tbox kernel: [ 325.720011] 00000000 c13ccfa0 f6019ef4 c10752ab 00000000 f6019f08 c1039c2c c13a1ef8 Mar 28 18:12:03 tbox kernel: [ 325.720011] Call Trace: Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c114b90f>] ? __delay+0x9/0xb Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c114b92b>] __const_udelay+0x1a/0x1c Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c10164ca>] arch_trigger_all_cpu_backtrace+0x50/0x62 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1074e8d>] check_cpu_stall+0x58/0xb8 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1074f02>] __rcu_pending+0x15/0xc4 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c10752ab>] rcu_check_callbacks+0x6d/0x93 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1039c2c>] update_process_times+0x2d/0x58 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1050991>] tick_sched_timer+0x6b/0x9a Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c104713e>] __run_hrtimer+0x9c/0x111 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1050926>] ? tick_nohz_handler+0xdf/0xdf Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1047ae0>] hrtimer_interrupt+0xd6/0x1bb Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c104fc49>] tick_do_broadcast.constprop.4+0x38/0x6a Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c104fd28>] tick_handle_oneshot_broadcast+0xad/0xe1 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1072d62>] ? unmask_irq+0x25/0x25 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1004209>] timer_interrupt+0x15/0x1c Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c107140d>] handle_irq_event_percpu+0x4e/0x164 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1072d62>] ? unmask_irq+0x25/0x25 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1071559>] handle_irq_event+0x36/0x51 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1072d62>] ? unmask_irq+0x25/0x25 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1072daf>] handle_level_irq+0x4d/0x63 Mar 28 18:12:03 tbox kernel: [ 325.720011] <IRQ> Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1003b81>] ? do_IRQ+0x35/0x80 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c129ca70>] ? common_interrupt+0x30/0x38 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c10400d8>] ? worker_maybe_bind_and_lock+0x3e/0x83 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<f868e30f>] ? arch_local_irq_enable+0x5/0xb [processor] Mar 28 18:12:03 tbox kernel: [ 325.720011] [<f868eef5>] ? acpi_idle_enter_simple+0x100/0x138 [processor] Mar 28 18:12:03 tbox kernel: [ 325.720011] [<f868ec6a>] ? acpi_idle_enter_bm+0xd0/0x25b [processor] Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c11e1ea2>] ? cpuidle_idle_call+0xc2/0x137 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1001da3>] ? cpu_idle+0x89/0xa3 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c127d300>] ? rest_init+0x58/0x5a Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1401722>] ? start_kernel+0x315/0x31a Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c14010a2>] ? i386_start_kernel+0xa2/0xaa Mar 28 18:12:03 tbox kernel: [ 325.720011] Code: d2 3e f7 e2 8d 42 01 e8 db ff ff ff 5d c3 69 c0 c7 10 00 00 55 89 e5 e8 d6 ff ff ff 5d c3 55 89 e5 8d 04 80 e8 c9 ff ff ff 5d c3 Mar 28 18:12:03 tbox kernel: [ 325.720011] Call Trace: Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c114b90f>] ? __delay+0x9/0xb Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c114b92b>] __const_udelay+0x1a/0x1c Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c10164ca>] arch_trigger_all_cpu_backtrace+0x50/0x62 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1074e8d>] check_cpu_stall+0x58/0xb8 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1074f02>] __rcu_pending+0x15/0xc4 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c10752ab>] rcu_check_callbacks+0x6d/0x93 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1039c2c>] update_process_times+0x2d/0x58 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1050991>] tick_sched_timer+0x6b/0x9a Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c104713e>] __run_hrtimer+0x9c/0x111 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1050926>] ? tick_nohz_handler+0xdf/0xdf Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1047ae0>] hrtimer_interrupt+0xd6/0x1bb Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c104fc49>] tick_do_broadcast.constprop.4+0x38/0x6a Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c104fd28>] tick_handle_oneshot_broadcast+0xad/0xe1 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1072d62>] ? unmask_irq+0x25/0x25 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1004209>] timer_interrupt+0x15/0x1c Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c107140d>] handle_irq_event_percpu+0x4e/0x164 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1072d62>] ? unmask_irq+0x25/0x25 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1071559>] handle_irq_event+0x36/0x51 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1072d62>] ? unmask_irq+0x25/0x25 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1072daf>] handle_level_irq+0x4d/0x63 Mar 28 18:12:03 tbox kernel: [ 325.720011] <IRQ> [<c1003b81>] ? do_IRQ+0x35/0x80 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c129ca70>] ? common_interrupt+0x30/0x38 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c10400d8>] ? worker_maybe_bind_and_lock+0x3e/0x83 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<f868e30f>] ? arch_local_irq_enable+0x5/0xb [processor] Mar 28 18:12:03 tbox kernel: [ 325.720011] [<f868eef5>] ? acpi_idle_enter_simple+0x100/0x138 [processor] Mar 28 18:12:03 tbox kernel: [ 325.720011] [<f868ec6a>] ? acpi_idle_enter_bm+0xd0/0x25b [processor] Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c11e1ea2>] ? cpuidle_idle_call+0xc2/0x137 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1001da3>] ? cpu_idle+0x89/0xa3 Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c127d300>] ? rest_init+0x58/0x5a Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c1401722>] ? start_kernel+0x315/0x31a Mar 28 18:12:03 tbox kernel: [ 325.720011] [<c14010a2>] ? i386_start_kernel+0xa2/0xaa Mar 28 18:12:37 tbox kernel: [ 360.304066] INFO: task modprobe:1662 blocked for more than 120 seconds. Mar 28 18:12:37 tbox kernel: [ 360.314213] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Mar 28 18:12:37 tbox kernel: [ 360.324527] modprobe D f5127ea4 0 1662 1651 0x00000000 Mar 28 18:12:37 tbox kernel: [ 360.335003] f5127e98 00000082 f594ac00 f5127ea4 c145d380 ed715c1f 0000002a c145d380 Mar 28 18:12:37 tbox kernel: [ 360.345745] 00000000 00000000 f594ac00 f637dc00 0000002a f594ac00 ffffffff ffffffff Mar 28 18:12:37 tbox kernel: [ 360.356521] f5127ed8 ed715020 f64063c4 ed715c1f 00000000 3d090000 00000000 f594ac2c Mar 28 18:12:37 tbox kernel: [ 360.367389] Call Trace: Mar 28 18:12:37 tbox kernel: [ 360.378083] [<c10215b4>] ? wakeup_preempt_entity+0x36/0x53 Mar 28 18:12:37 tbox kernel: [ 360.388915] [<c1295ed0>] schedule_timeout+0x21/0xaa Mar 28 18:12:37 tbox kernel: [ 360.399708] [<c1295ed0>] ? schedule_timeout+0x21/0xaa Mar 28 18:12:37 tbox kernel: [ 360.410473] [<c114507f>] ? cpumask_next_and+0x23/0x2f Mar 28 18:12:37 tbox kernel: [ 360.421240] [<c1295d41>] wait_for_common+0x77/0xcd Mar 28 18:12:37 tbox kernel: [ 360.432032] [<c102a570>] ? try_to_wake_up+0x142/0x142 Mar 28 18:12:37 tbox kernel: [ 360.442808] [<c107499c>] ? call_rcu_bh+0xf/0xf Mar 28 18:12:37 tbox kernel: [ 360.453598] [<c1295e18>] wait_for_completion+0x12/0x14 Mar 28 18:12:37 tbox kernel: [ 360.464436] [<c1074df6>] _rcu_barrier.isra.41+0x78/0x85 Mar 28 18:12:37 tbox kernel: [ 360.475315] [<c1074e10>] rcu_barrier_sched+0xd/0xf Mar 28 18:12:37 tbox kernel: [ 360.485900] [<c1074e1a>] rcu_barrier+0x8/0xa Mar 28 18:12:37 tbox kernel: [ 360.496150] [<f82e35df>] rcu_torture_cleanup+0x2cd/0x317 [rcutorture] Mar 28 18:12:37 tbox kernel: [ 360.506544] [<c1057d05>] sys_delete_module+0x198/0x1f5 Mar 28 18:12:37 tbox kernel: [ 360.516992] [<c1075093>] ? rcu_enter_nohz+0x28/0x9c Mar 28 18:12:37 tbox kernel: [ 360.527410] [<c1075219>] ? rcu_irq_exit+0x8/0xa Mar 28 18:12:37 tbox kernel: [ 360.537813] [<c129c4df>] sysenter_do_call+0x12/0x28 Mar 28 18:14:37 tbox kernel: [ 480.548068] INFO: task modprobe:1662 blocked for more than 120 seconds. Mar 28 18:14:37 tbox kernel: [ 480.558653] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Mar 28 18:14:37 tbox kernel: [ 480.569378] modprobe D f5127ea4 0 1662 1651 0x00000000 Mar 28 18:14:37 tbox kernel: [ 480.580205] f5127e98 00000082 f594ac00 f5127ea4 c145d380 ed715c1f 0000002a c145d380 Mar 28 18:14:37 tbox kernel: [ 480.591303] 00000000 00000000 f594ac00 f637dc00 0000002a f594ac00 ffffffff ffffffff Mar 28 18:14:37 tbox kernel: [ 480.602479] f5127ed8 ed715020 f64063c4 ed715c1f 00000000 3d090000 00000000 f594ac2c Mar 28 18:14:37 tbox kernel: [ 480.613746] Call Trace: Mar 28 18:14:37 tbox kernel: [ 480.624810] [<c10215b4>] ? wakeup_preempt_entity+0x36/0x53 Mar 28 18:14:37 tbox kernel: [ 480.636044] [<c1295ed0>] schedule_timeout+0x21/0xaa Mar 28 18:14:37 tbox kernel: [ 480.647248] [<c1295ed0>] ? schedule_timeout+0x21/0xaa Mar 28 18:14:37 tbox kernel: [ 480.658528] [<c114507f>] ? cpumask_next_and+0x23/0x2f Mar 28 18:14:37 tbox kernel: [ 480.669762] [<c1295d41>] wait_for_common+0x77/0xcd Mar 28 18:14:37 tbox kernel: [ 480.680957] [<c102a570>] ? try_to_wake_up+0x142/0x142 Mar 28 18:14:37 tbox kernel: [ 480.692187] [<c107499c>] ? call_rcu_bh+0xf/0xf Mar 28 18:14:37 tbox kernel: [ 480.703404] [<c1295e18>] wait_for_completion+0x12/0x14 Mar 28 18:14:37 tbox kernel: [ 480.714691] [<c1074df6>] _rcu_barrier.isra.41+0x78/0x85 Mar 28 18:14:37 tbox kernel: [ 480.725994] [<c1074e10>] rcu_barrier_sched+0xd/0xf Mar 28 18:14:37 tbox kernel: [ 480.737266] [<c1074e1a>] rcu_barrier+0x8/0xa Mar 28 18:14:37 tbox kernel: [ 480.748460] [<f82e35df>] rcu_torture_cleanup+0x2cd/0x317 [rcutorture] Mar 28 18:14:37 tbox kernel: [ 480.759798] [<c1057d05>] sys_delete_module+0x198/0x1f5 Mar 28 18:14:37 tbox kernel: [ 480.771072] [<c1075093>] ? rcu_enter_nohz+0x28/0x9c Mar 28 18:14:37 tbox kernel: [ 480.782354] [<c1075219>] ? rcu_irq_exit+0x8/0xa Mar 28 18:14:37 tbox kernel: [ 480.793576] [<c129c4df>] sysenter_do_call+0x12/0x28 Mar 28 18:15:03 tbox kernel: [ 505.836029] INFO: rcu_sched_state detected stall on CPU 0 (t=105060 jiffies) Mar 28 18:15:03 tbox kernel: [ 505.840011] sending NMI to all CPUs: Mar 28 18:15:03 tbox kernel: [ 505.840011] NMI backtrace for cpu 0 Mar 28 18:15:03 tbox kernel: [ 505.840011] Modules linked in: rcutorture(-) acpi_cpufreq mperf cpufreq_powersave cpufreq_userspace cpufreq_stats cpufreq_conservative ppdev lp aes_i586 aes_generic rfcomm bnep bluetooth binfmt_misc fuse snd_intel8x0m snd_intel8x0 snd_ac97_codec radeon ac97_bus snd_pcm_oss arc4 snd_mixer_oss ecb ath5k joydev snd_pcm thinkpad_acpi pcmcia snd_seq_midi ath ttm mac80211 snd_rawmidi drm_kms_helper drm cfg80211 yenta_socket snd_seq_midi_event pcmcia_rsrc snd_seq pcmcia_core snd_timer i2c_algo_bit rfkill snd_seq_device psmouse snd nsc_ircc tpm_tis parport_pc battery ac pcspkr tpm irda i2c_i801 shpchp serio_raw tpm_bios soundcore processor i2c_core evdev pci_hotplug snd_page_alloc crc_ccitt parport nvram power_supply video button ext4 mbcache jbd2 crc16 dm_mod usbhid hid usb_storage uas sg sr_mod sd_mod cdrom crc_t10dif ata_generic ata_piix uhci_hcd libata ehci_hcd scsi_mod usbcore e1000 thermal thermal_sys floppy [last unloaded: scsi_wait_scan] Mar 28 18:15:03 tbox kernel: [ 505.840011] Mar 28 18:15:03 tbox kernel: [ 505.840011] Pid: 0, comm: swapper Not tainted 2.6.38-next20110328-3-686-iniza #1 IBM 2374SG6/2374SG6 Mar 28 18:15:03 tbox kernel: [ 505.840011] EIP: 0060:[<c114b91b>] EFLAGS: 00000002 CPU: 0 Mar 28 18:15:03 tbox kernel: [ 505.840011] EIP is at __const_udelay+0xa/0x1c Mar 28 18:15:03 tbox kernel: [ 505.840011] EAX: 00418958 EBX: 00002710 ECX: c132e541 EDX: 00247fab Mar 28 18:15:03 tbox kernel: [ 505.840011] ESI: c13d7500 EDI: c13d7580 EBP: f6019eac ESP: f6019eac Mar 28 18:15:03 tbox kernel: [ 505.840011] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Mar 28 18:15:03 tbox kernel: [ 505.840011] Process swapper (pid: 0, ti=f6018000 task=c13ccfa0 task.ti=c13a0000) Mar 28 18:15:03 tbox kernel: [ 505.840011] Stack: Mar 28 18:15:03 tbox kernel: [ 505.840011] f6019eb8 c10164ca c13d7500 f6019ed4 c1074e8d c133c4ef c133c5be 00000000 Mar 28 18:15:03 tbox kernel: [ 505.840011] 00019a64 f6403488 f6019ee8 c1074f02 00000000 00000000 c13ccfa0 f6019ef4 Mar 28 18:15:03 tbox kernel: [ 505.840011] c10752ab 00000000 f6019f08 c1039c2c c13a1ef8 c62d1b06 00000075 f6019f20 Mar 28 18:15:03 tbox kernel: [ 505.840011] Call Trace: Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c10164ca>] arch_trigger_all_cpu_backtrace+0x50/0x62 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1074e8d>] check_cpu_stall+0x58/0xb8 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1074f02>] __rcu_pending+0x15/0xc4 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c10752ab>] rcu_check_callbacks+0x6d/0x93 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1039c2c>] update_process_times+0x2d/0x58 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1050991>] tick_sched_timer+0x6b/0x9a Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c104713e>] __run_hrtimer+0x9c/0x111 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1050926>] ? tick_nohz_handler+0xdf/0xdf Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1047ae0>] hrtimer_interrupt+0xd6/0x1bb Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c104fc49>] tick_do_broadcast.constprop.4+0x38/0x6a Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c104fd28>] tick_handle_oneshot_broadcast+0xad/0xe1 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1072d62>] ? unmask_irq+0x25/0x25 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1004209>] timer_interrupt+0x15/0x1c Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c107140d>] handle_irq_event_percpu+0x4e/0x164 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1072d62>] ? unmask_irq+0x25/0x25 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1071559>] handle_irq_event+0x36/0x51 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1072d62>] ? unmask_irq+0x25/0x25 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1072daf>] handle_level_irq+0x4d/0x63 Mar 28 18:15:03 tbox kernel: [ 505.840011] <IRQ> Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1003b81>] ? do_IRQ+0x35/0x80 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c129ca70>] ? common_interrupt+0x30/0x38 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c10400d8>] ? worker_maybe_bind_and_lock+0x3e/0x83 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<f868e30f>] ? arch_local_irq_enable+0x5/0xb [processor] Mar 28 18:15:03 tbox kernel: [ 505.840011] [<f868eef5>] ? acpi_idle_enter_simple+0x100/0x138 [processor] Mar 28 18:15:03 tbox kernel: [ 505.840011] [<f868ec6a>] ? acpi_idle_enter_bm+0xd0/0x25b [processor] Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c11e1ea2>] ? cpuidle_idle_call+0xc2/0x137 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1001da3>] ? cpu_idle+0x89/0xa3 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c127d300>] ? rest_init+0x58/0x5a Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1401722>] ? start_kernel+0x315/0x31a Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c14010a2>] ? i386_start_kernel+0xa2/0xaa Mar 28 18:15:03 tbox kernel: [ 505.840011] Code: eb 0e 8d b4 26 00 00 00 00 8d bc 27 00 00 00 00 48 75 fd 48 5d c3 55 89 e5 ff 15 a8 81 3e c1 5d c3 55 89 e5 64 8b 15 dc d2 45 c1 <c1> e0 02 6b d2 3e f7 e2 8d 42 01 e8 db ff ff ff 5d c3 69 c0 c7 Mar 28 18:15:03 tbox kernel: [ 505.840011] Call Trace: Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c10164ca>] arch_trigger_all_cpu_backtrace+0x50/0x62 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1074e8d>] check_cpu_stall+0x58/0xb8 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1074f02>] __rcu_pending+0x15/0xc4 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c10752ab>] rcu_check_callbacks+0x6d/0x93 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1039c2c>] update_process_times+0x2d/0x58 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1050991>] tick_sched_timer+0x6b/0x9a Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c104713e>] __run_hrtimer+0x9c/0x111 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1050926>] ? tick_nohz_handler+0xdf/0xdf Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1047ae0>] hrtimer_interrupt+0xd6/0x1bb Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c104fc49>] tick_do_broadcast.constprop.4+0x38/0x6a Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c104fd28>] tick_handle_oneshot_broadcast+0xad/0xe1 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1072d62>] ? unmask_irq+0x25/0x25 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1004209>] timer_interrupt+0x15/0x1c Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c107140d>] handle_irq_event_percpu+0x4e/0x164 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1072d62>] ? unmask_irq+0x25/0x25 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1071559>] handle_irq_event+0x36/0x51 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1072d62>] ? unmask_irq+0x25/0x25 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1072daf>] handle_level_irq+0x4d/0x63 Mar 28 18:15:03 tbox kernel: [ 505.840011] <IRQ> [<c1003b81>] ? do_IRQ+0x35/0x80 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c129ca70>] ? common_interrupt+0x30/0x38 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c10400d8>] ? worker_maybe_bind_and_lock+0x3e/0x83 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<f868e30f>] ? arch_local_irq_enable+0x5/0xb [processor] Mar 28 18:15:03 tbox kernel: [ 505.840011] [<f868eef5>] ? acpi_idle_enter_simple+0x100/0x138 [processor] Mar 28 18:15:03 tbox kernel: [ 505.840011] [<f868ec6a>] ? acpi_idle_enter_bm+0xd0/0x25b [processor] Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c11e1ea2>] ? cpuidle_idle_call+0xc2/0x137 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1001da3>] ? cpu_idle+0x89/0xa3 Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c127d300>] ? rest_init+0x58/0x5a Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c1401722>] ? start_kernel+0x315/0x31a Mar 28 18:15:03 tbox kernel: [ 505.840011] [<c14010a2>] ? i386_start_kernel+0xa2/0xaa Mar 28 18:16:38 tbox kernel: [ 600.804066] INFO: task modprobe:1662 blocked for more than 120 seconds. Mar 28 18:16:38 tbox kernel: [ 600.814684] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Mar 28 18:16:38 tbox kernel: [ 600.825484] modprobe D f5127ea4 0 1662 1651 0x00000000 Mar 28 18:16:38 tbox kernel: [ 600.836381] f5127e98 00000082 f594ac00 f5127ea4 c145d380 ed715c1f 0000002a c145d380 Mar 28 18:16:38 tbox kernel: [ 600.847562] 00000000 00000000 f594ac00 f637dc00 0000002a f594ac00 ffffffff ffffffff Mar 28 18:16:38 tbox kernel: [ 600.858807] f5127ed8 ed715020 f64063c4 ed715c1f 00000000 3d090000 00000000 f594ac2c Mar 28 18:16:38 tbox kernel: [ 600.870196] Call Trace: Mar 28 18:16:38 tbox kernel: [ 600.881367] [<c10215b4>] ? wakeup_preempt_entity+0x36/0x53 Mar 28 18:16:38 tbox kernel: [ 600.892671] [<c1295ed0>] schedule_timeout+0x21/0xaa Mar 28 18:16:38 tbox kernel: [ 600.903940] [<c1295ed0>] ? schedule_timeout+0x21/0xaa Mar 28 18:16:38 tbox kernel: [ 600.915184] [<c114507f>] ? cpumask_next_and+0x23/0x2f Mar 28 18:16:38 tbox kernel: [ 600.926423] [<c1295d41>] wait_for_common+0x77/0xcd Mar 28 18:16:38 tbox kernel: [ 600.937628] [<c102a570>] ? try_to_wake_up+0x142/0x142 Mar 28 18:16:38 tbox kernel: [ 600.948873] [<c107499c>] ? call_rcu_bh+0xf/0xf Mar 28 18:16:38 tbox kernel: [ 600.960134] [<c1295e18>] wait_for_completion+0x12/0x14 Mar 28 18:16:38 tbox kernel: [ 600.971503] [<c1074df6>] _rcu_barrier.isra.41+0x78/0x85 Mar 28 18:16:38 tbox kernel: [ 600.982899] [<c1074e10>] rcu_barrier_sched+0xd/0xf Mar 28 18:16:38 tbox kernel: [ 600.993893] [<c1074e1a>] rcu_barrier+0x8/0xa Mar 28 18:16:38 tbox kernel: [ 601.004417] [<f82e35df>] rcu_torture_cleanup+0x2cd/0x317 [rcutorture] Mar 28 18:16:38 tbox kernel: [ 601.015076] [<c1057d05>] sys_delete_module+0x198/0x1f5 Mar 28 18:16:38 tbox kernel: [ 601.025690] [<c1075093>] ? rcu_enter_nohz+0x28/0x9c Mar 28 18:16:38 tbox kernel: [ 601.036275] [<c1075219>] ? rcu_irq_exit+0x8/0xa Mar 28 18:16:38 tbox kernel: [ 601.046855] [<c129c4df>] sysenter_do_call+0x12/0x28 Mar 28 18:17:01 tbox /USR/SBIN/CRON[1665]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Mar 28 18:18:04 tbox kernel: [ 685.956029] INFO: rcu_sched_state detected stall on CPU 0 (t=150090 jiffies) Mar 28 18:18:04 tbox kernel: [ 685.960012] sending NMI to all CPUs: Mar 28 18:18:04 tbox kernel: [ 685.960012] NMI backtrace for cpu 0 Mar 28 18:18:04 tbox kernel: [ 685.960012] Modules linked in: rcutorture(-) acpi_cpufreq mperf cpufreq_powersave cpufreq_userspace cpufreq_stats cpufreq_conservative ppdev lp aes_i586 aes_generic rfcomm bnep bluetooth binfmt_misc fuse snd_intel8x0m snd_intel8x0 snd_ac97_codec radeon ac97_bus snd_pcm_oss arc4 snd_mixer_oss ecb ath5k joydev snd_pcm thinkpad_acpi pcmcia snd_seq_midi ath ttm mac80211 snd_rawmidi drm_kms_helper drm cfg80211 yenta_socket snd_seq_midi_event pcmcia_rsrc snd_seq pcmcia_core snd_timer i2c_algo_bit rfkill snd_seq_device psmouse snd nsc_ircc tpm_tis parport_pc battery ac pcspkr tpm irda i2c_i801 shpchp serio_raw tpm_bios soundcore processor i2c_core evdev pci_hotplug snd_page_alloc crc_ccitt parport nvram power_supply video button ext4 mbcache jbd2 crc16 dm_mod usbhid hid usb_storage uas sg sr_mod sd_mod cdrom crc_t10dif ata_generic ata_piix uhci_hcd libata ehci_hcd scsi_mod usbcore e1000 thermal thermal_sys floppy [last unloaded: scsi_wait_scan] Mar 28 18:18:04 tbox kernel: [ 685.960012] Mar 28 18:18:04 tbox kernel: [ 685.960012] Pid: 0, comm: swapper Not tainted 2.6.38-next20110328-3-686-iniza #1 IBM 2374SG6/2374SG6 Mar 28 18:18:04 tbox kernel: [ 685.960012] EIP: 0060:[<c114b923>] EFLAGS: 00000807 CPU: 0 Mar 28 18:18:04 tbox kernel: [ 685.960012] EIP is at __const_udelay+0x12/0x1c Mar 28 18:18:04 tbox kernel: [ 685.960012] EAX: 4f1a99c0 EBX: 00002710 ECX: c132e541 EDX: 00090d3f Mar 28 18:18:04 tbox kernel: [ 685.960012] ESI: c13d7500 EDI: c13d7580 EBP: f6019eac ESP: f6019eac Mar 28 18:18:04 tbox kernel: [ 685.960012] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Mar 28 18:18:04 tbox kernel: [ 685.960012] Process swapper (pid: 0, ti=f6018000 task=c13ccfa0 task.ti=c13a0000) Mar 28 18:18:04 tbox kernel: [ 685.960012] Stack: Mar 28 18:18:04 tbox kernel: [ 685.960012] f6019eb8 c10164ca c13d7500 f6019ed4 c1074e8d c133c4ef c133c5be 00000000 Mar 28 18:18:04 tbox kernel: [ 685.960012] 00024a4a f6403488 f6019ee8 c1074f02 00000000 00000000 c13ccfa0 f6019ef4 Mar 28 18:18:04 tbox kernel: [ 685.960012] c10752ab 00000000 f6019f08 c1039c2c c13a1ef8 b62a34e0 0000009f f6019f20 Mar 28 18:18:04 tbox kernel: [ 685.960012] Call Trace: Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c10164ca>] arch_trigger_all_cpu_backtrace+0x50/0x62 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1074e8d>] check_cpu_stall+0x58/0xb8 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1074f02>] __rcu_pending+0x15/0xc4 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c10752ab>] rcu_check_callbacks+0x6d/0x93 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1039c2c>] update_process_times+0x2d/0x58 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1050991>] tick_sched_timer+0x6b/0x9a Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c104713e>] __run_hrtimer+0x9c/0x111 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1050926>] ? tick_nohz_handler+0xdf/0xdf Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1047ae0>] hrtimer_interrupt+0xd6/0x1bb Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c104fc49>] tick_do_broadcast.constprop.4+0x38/0x6a Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c104fd28>] tick_handle_oneshot_broadcast+0xad/0xe1 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1072d62>] ? unmask_irq+0x25/0x25 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1004209>] timer_interrupt+0x15/0x1c Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c107140d>] handle_irq_event_percpu+0x4e/0x164 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1072d62>] ? unmask_irq+0x25/0x25 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1071559>] handle_irq_event+0x36/0x51 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1072d62>] ? unmask_irq+0x25/0x25 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1072daf>] handle_level_irq+0x4d/0x63 Mar 28 18:18:04 tbox kernel: [ 685.960012] <IRQ> Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1003b81>] ? do_IRQ+0x35/0x80 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c129ca70>] ? common_interrupt+0x30/0x38 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c10400d8>] ? worker_maybe_bind_and_lock+0x3e/0x83 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<f868e30f>] ? arch_local_irq_enable+0x5/0xb [processor] Mar 28 18:18:04 tbox kernel: [ 685.960012] [<f868eef5>] ? acpi_idle_enter_simple+0x100/0x138 [processor] Mar 28 18:18:04 tbox kernel: [ 685.960012] [<f868ec6a>] ? acpi_idle_enter_bm+0xd0/0x25b [processor] Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c11e1ea2>] ? cpuidle_idle_call+0xc2/0x137 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1001da3>] ? cpu_idle+0x89/0xa3 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c127d300>] ? rest_init+0x58/0x5a Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1401722>] ? start_kernel+0x315/0x31a Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c14010a2>] ? i386_start_kernel+0xa2/0xaa Mar 28 18:18:04 tbox kernel: [ 685.960012] Code: 00 8d bc 27 00 00 00 00 48 75 fd 48 5d c3 55 89 e5 ff 15 a8 81 3e c1 5d c3 55 89 e5 64 8b 15 dc d2 45 c1 c1 e0 02 6b d2 3e f7 e2 <8d> 42 01 e8 db ff ff ff 5d c3 69 c0 c7 10 00 00 55 89 e5 e8 d6 Mar 28 18:18:04 tbox kernel: [ 685.960012] Call Trace: Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c10164ca>] arch_trigger_all_cpu_backtrace+0x50/0x62 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1074e8d>] check_cpu_stall+0x58/0xb8 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1074f02>] __rcu_pending+0x15/0xc4 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c10752ab>] rcu_check_callbacks+0x6d/0x93 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1039c2c>] update_process_times+0x2d/0x58 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1050991>] tick_sched_timer+0x6b/0x9a Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c104713e>] __run_hrtimer+0x9c/0x111 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1050926>] ? tick_nohz_handler+0xdf/0xdf Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1047ae0>] hrtimer_interrupt+0xd6/0x1bb Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c104fc49>] tick_do_broadcast.constprop.4+0x38/0x6a Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c104fd28>] tick_handle_oneshot_broadcast+0xad/0xe1 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1072d62>] ? unmask_irq+0x25/0x25 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1004209>] timer_interrupt+0x15/0x1c Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c107140d>] handle_irq_event_percpu+0x4e/0x164 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1072d62>] ? unmask_irq+0x25/0x25 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1071559>] handle_irq_event+0x36/0x51 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1072d62>] ? unmask_irq+0x25/0x25 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1072daf>] handle_level_irq+0x4d/0x63 Mar 28 18:18:04 tbox kernel: [ 685.960012] <IRQ> [<c1003b81>] ? do_IRQ+0x35/0x80 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c129ca70>] ? common_interrupt+0x30/0x38 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c10400d8>] ? worker_maybe_bind_and_lock+0x3e/0x83 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<f868e30f>] ? arch_local_irq_enable+0x5/0xb [processor] Mar 28 18:18:04 tbox kernel: [ 685.960012] [<f868eef5>] ? acpi_idle_enter_simple+0x100/0x138 [processor] Mar 28 18:18:04 tbox kernel: [ 685.960012] [<f868ec6a>] ? acpi_idle_enter_bm+0xd0/0x25b [processor] Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c11e1ea2>] ? cpuidle_idle_call+0xc2/0x137 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1001da3>] ? cpu_idle+0x89/0xa3 Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c127d300>] ? rest_init+0x58/0x5a Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c1401722>] ? start_kernel+0x315/0x31a Mar 28 18:18:04 tbox kernel: [ 685.960012] [<c14010a2>] ? i386_start_kernel+0xa2/0xaa Mar 28 18:18:38 tbox kernel: [ 721.056065] INFO: task modprobe:1662 blocked for more than 120 seconds. Mar 28 18:18:38 tbox kernel: [ 721.066683] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Mar 28 18:18:38 tbox kernel: [ 721.077467] modprobe D f5127ea4 0 1662 1651 0x00000000 Mar 28 18:18:38 tbox kernel: [ 721.088422] f5127e98 00000082 f594ac00 f5127ea4 c145d380 ed715c1f 0000002a c145d380 Mar 28 18:18:38 tbox kernel: [ 721.099608] 00000000 00000000 f594ac00 f637dc00 0000002a f594ac00 ffffffff ffffffff Mar 28 18:18:38 tbox kernel: [ 721.110877] f5127ed8 ed715020 f64063c4 ed715c1f 00000000 3d090000 00000000 f594ac2c Mar 28 18:18:38 tbox kernel: [ 721.122224] Call Trace: Mar 28 18:18:38 tbox kernel: [ 721.133395] [<c10215b4>] ? wakeup_preempt_entity+0x36/0x53 Mar 28 18:18:38 tbox kernel: [ 721.144707] [<c1295ed0>] schedule_timeout+0x21/0xaa Mar 28 18:18:38 tbox kernel: [ 721.155977] [<c1295ed0>] ? schedule_timeout+0x21/0xaa Mar 28 18:18:38 tbox kernel: [ 721.167211] [<c114507f>] ? cpumask_next_and+0x23/0x2f Mar 28 18:18:38 tbox kernel: [ 721.178445] [<c1295d41>] wait_for_common+0x77/0xcd Mar 28 18:18:38 tbox kernel: [ 721.189693] [<c102a570>] ? try_to_wake_up+0x142/0x142 Mar 28 18:18:38 tbox kernel: [ 721.200939] [<c107499c>] ? call_rcu_bh+0xf/0xf Mar 28 18:18:38 tbox kernel: [ 721.212205] [<c1295e18>] wait_for_completion+0x12/0x14 Mar 28 18:18:38 tbox kernel: [ 721.223518] [<c1074df6>] _rcu_barrier.isra.41+0x78/0x85 Mar 28 18:18:38 tbox kernel: [ 721.234876] [<c1074e10>] rcu_barrier_sched+0xd/0xf Mar 28 18:18:38 tbox kernel: [ 721.245861] [<c1074e1a>] rcu_barrier+0x8/0xa Mar 28 18:18:38 tbox kernel: [ 721.256390] [<f82e35df>] rcu_torture_cleanup+0x2cd/0x317 [rcutorture] Mar 28 18:18:38 tbox kernel: [ 721.267042] [<c1057d05>] sys_delete_module+0x198/0x1f5 Mar 28 18:18:38 tbox kernel: [ 721.277652] [<c1075093>] ? rcu_enter_nohz+0x28/0x9c Mar 28 18:18:38 tbox kernel: [ 721.288273] [<c1075219>] ? rcu_irq_exit+0x8/0xa Mar 28 18:18:38 tbox kernel: [ 721.298872] [<c129c4df>] sysenter_do_call+0x12/0x28
