* BUG: scheduling while atomic: chcpu/6197/0x00000002
@ 2012-06-18 10:19 Thomas Sattler
2012-06-18 12:33 ` Thomas Sattler
0 siblings, 1 reply; 15+ messages in thread
From: Thomas Sattler @ 2012-06-18 10:19 UTC (permalink / raw)
To: Linux Kernel Mailing List; +Cc: Ingo Molnar, Thomas Gleixner
Hi there ...
I run into the BUG by running 'chcpu --disable 1' on an "Intel(R)
Core(TM)2 CPU" machine. I used 3.4.2-rt10 and I seems not to
happen in vanilla 3.4.2.
I'll try 3.4.3 and 3.4.3-rt10 next and I'll send their results as
a reply to this mail.
(Please CC: me, I'm not on LKML)
Thanks
Thomas
[ 554.815919] BUG: scheduling while atomic: chcpu/6197/0x00000002
[ 554.815923] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid uhci_hcd ehci_hcd 3c59x mii e1000e sg usbcore usb_common
[ 554.815942] Pid: 6197, comm: chcpu Not tainted 3.4.2-rt10 #19
[ 554.815945] Call Trace:
[ 554.815953] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 554.815958] [<c1355334>] __schedule+0x68/0x571
[ 554.815964] [<c1045844>] ? enqueue_entity+0x313/0x3d8
[ 554.815969] [<c13558e2>] schedule+0x60/0x70
[ 554.815972] [<c1354902>] schedule_timeout+0x17/0x160
[ 554.815977] [<c103ed57>] ? check_preempt_curr+0x29/0x64
[ 554.815981] [<c13551ed>] wait_for_common+0xa3/0xff
[ 554.815985] [<c10412e2>] ? try_to_wake_up+0x391/0x391
[ 554.815989] [<c13552ca>] wait_for_completion+0x12/0x14
[ 554.815993] [<c103781c>] kthread_create_on_node+0x71/0xb5
[ 554.815997] [<c102542c>] ? put_online_cpus+0x44/0x44
[ 554.816002] [<c1350101>] ? init_amd+0x56f/0x64f
[ 554.816007] [<c134719f>] _cpu_down+0x106/0x2b4
[ 554.816021] [<c102542c>] ? put_online_cpus+0x44/0x44
[ 554.816027] [<c1347372>] cpu_down+0x25/0x34
[ 554.816030] [<c13489b6>] store_online+0x29/0x70
[ 554.816034] [<c134898d>] ? acpi_processor_start+0xf7/0xf7
[ 554.816038] [<c127b037>] dev_attr_store+0x1b/0x23
[ 554.816043] [<c10eb6c6>] sysfs_write_file+0xae/0xe7
[ 554.816048] [<c10ab93e>] vfs_write+0x8c/0x122
[ 554.816052] [<c10eb618>] ? sysfs_poll+0x77/0x77
[ 554.816056] [<c10abb8f>] sys_write+0x3b/0x60
[ 554.816061] [<c1357823>] sysenter_do_call+0x12/0x2c
[ 554.817316] BUG: scheduling while atomic: chcpu/6197/0x00000002
[ 554.817319] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid uhci_hcd ehci_hcd 3c59x mii e1000e sg usbcore usb_common
[ 554.817335] Pid: 6197, comm: chcpu Not tainted 3.4.2-rt10 #19
[ 554.817337] Call Trace:
[ 554.817343] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 554.817347] [<c1355334>] __schedule+0x68/0x571
[ 554.817351] [<c1356a61>] ? _raw_spin_unlock_irqrestore+0x1a/0x2f
[ 554.817356] [<c103a992>] ? __hrtimer_start_range_ns+0x2cf/0x2f6
[ 554.817360] [<c13558e2>] schedule+0x60/0x70
[ 554.817364] [<c1354dea>] schedule_hrtimeout_range_clock+0xc5/0xec
[ 554.817368] [<c103a202>] ? update_rmtp+0x68/0x68
[ 554.817372] [<c1354e1b>] schedule_hrtimeout_range+0xa/0xc
[ 554.817376] [<c1354e29>] schedule_hrtimeout+0xc/0xe
[ 554.817380] [<c103f197>] wait_task_inactive+0xc5/0xd6
[ 554.817385] [<c1037773>] kthread_bind+0x13/0x4b
[ 554.817389] [<c13471ba>] _cpu_down+0x121/0x2b4
[ 554.817394] [<c1347372>] cpu_down+0x25/0x34
[ 554.817397] [<c13489b6>] store_online+0x29/0x70
[ 554.817401] [<c134898d>] ? acpi_processor_start+0xf7/0xf7
[ 554.817405] [<c127b037>] dev_attr_store+0x1b/0x23
[ 554.817409] [<c10eb6c6>] sysfs_write_file+0xae/0xe7
[ 554.817413] [<c10ab93e>] vfs_write+0x8c/0x122
[ 554.817417] [<c10eb618>] ? sysfs_poll+0x77/0x77
[ 554.817421] [<c10abb8f>] sys_write+0x3b/0x60
[ 554.817425] [<c1357823>] sysenter_do_call+0x12/0x2c
[ 554.819134] BUG: scheduling while atomic: chcpu/6197/0x00000002
[ 554.819137] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid uhci_hcd ehci_hcd 3c59x mii e1000e sg usbcore usb_common
[ 554.819153] Pid: 6197, comm: chcpu Not tainted 3.4.2-rt10 #19
[ 554.819155] Call Trace:
[ 554.819160] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 554.819164] [<c1355334>] __schedule+0x68/0x571
[ 554.819170] [<c1008017>] ? sched_clock+0x9/0xd
[ 554.819173] [<c10428f9>] ? sched_clock_local+0x11/0x12f
[ 554.819178] [<c13558e2>] schedule+0x60/0x70
[ 554.819182] [<c1354902>] schedule_timeout+0x17/0x160
[ 554.819186] [<c13551ed>] wait_for_common+0xa3/0xff
[ 554.819190] [<c10412e2>] ? try_to_wake_up+0x391/0x391
[ 554.819195] [<c13552ca>] wait_for_completion+0x12/0x14
[ 554.819199] [<c13471c9>] _cpu_down+0x130/0x2b4
[ 554.819203] [<c1347372>] cpu_down+0x25/0x34
[ 554.819207] [<c13489b6>] store_online+0x29/0x70
[ 554.819210] [<c134898d>] ? acpi_processor_start+0xf7/0xf7
[ 554.819214] [<c127b037>] dev_attr_store+0x1b/0x23
[ 554.819219] [<c10eb6c6>] sysfs_write_file+0xae/0xe7
[ 554.819223] [<c10ab93e>] vfs_write+0x8c/0x122
[ 554.819227] [<c10eb618>] ? sysfs_poll+0x77/0x77
[ 554.819230] [<c10abb8f>] sys_write+0x3b/0x60
[ 554.819235] [<c1357823>] sysenter_do_call+0x12/0x2c
[ 554.819269] BUG: scheduling while atomic: chcpu/6197/0x00000002
[ 554.819271] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid uhci_hcd ehci_hcd 3c59x mii e1000e sg usbcore usb_common
[ 554.819287] Pid: 6197, comm: chcpu Not tainted 3.4.2-rt10 #19
[ 554.819289] Call Trace:
[ 554.819293] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 554.819297] [<c1355334>] __schedule+0x68/0x571
[ 554.819302] [<c1008017>] ? sched_clock+0x9/0xd
[ 554.819306] [<c10428f9>] ? sched_clock_local+0x11/0x12f
[ 554.819312] [<c13558e2>] schedule+0x60/0x70
[ 554.819316] [<c1354902>] schedule_timeout+0x17/0x160
[ 554.819320] [<c13551ed>] wait_for_common+0xa3/0xff
[ 554.819324] [<c10412e2>] ? try_to_wake_up+0x391/0x391
[ 554.819328] [<c13552ca>] wait_for_completion+0x12/0x14
[ 554.819332] [<c1037742>] kthread_stop+0x2d/0x4b
[ 554.819337] [<c10330fa>] destroy_worker+0x54/0x74
[ 554.819341] [<c1348d37>] workqueue_cpu_down_callback+0x193/0x251
[ 554.819346] [<c1185d3d>] ? compute_batch_value+0x19/0x29
[ 554.819350] [<c1353d1e>] ? percpu_counter_hotcpu_callback+0x13/0x8b
[ 554.819354] [<c103b6b9>] notifier_call_chain+0x26/0x48
[ 554.819358] [<c103b6fd>] __raw_notifier_call_chain+0xe/0x10
[ 554.819362] [<c1025331>] __cpu_notify+0x15/0x29
[ 554.819367] [<c13471f1>] _cpu_down+0x158/0x2b4
[ 554.819371] [<c1347372>] cpu_down+0x25/0x34
[ 554.819375] [<c13489b6>] store_online+0x29/0x70
[ 554.819378] [<c134898d>] ? acpi_processor_start+0xf7/0xf7
[ 554.819382] [<c127b037>] dev_attr_store+0x1b/0x23
[ 554.819386] [<c10eb6c6>] sysfs_write_file+0xae/0xe7
[ 554.819390] [<c10ab93e>] vfs_write+0x8c/0x122
[ 554.819394] [<c10eb618>] ? sysfs_poll+0x77/0x77
[ 554.819398] [<c10abb8f>] sys_write+0x3b/0x60
[ 554.819402] [<c1357823>] sysenter_do_call+0x12/0x2c
[ 554.819421] BUG: scheduling while atomic: chcpu/6197/0x00000002
[ 554.819424] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid uhci_hcd ehci_hcd 3c59x mii e1000e sg usbcore usb_common
[ 554.819439] Pid: 6197, comm: chcpu Not tainted 3.4.2-rt10 #19
[ 554.819442] Call Trace:
[ 554.819446] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 554.819450] [<c1355334>] __schedule+0x68/0x571
[ 554.819455] [<c1008017>] ? sched_clock+0x9/0xd
[ 554.819459] [<c10428f9>] ? sched_clock_local+0x11/0x12f
[ 554.819463] [<c13558e2>] schedule+0x60/0x70
[ 554.819466] [<c1354902>] schedule_timeout+0x17/0x160
[ 554.819471] [<c13551ed>] wait_for_common+0xa3/0xff
[ 554.819475] [<c10412e2>] ? try_to_wake_up+0x391/0x391
[ 554.819478] [<c13552ca>] wait_for_completion+0x12/0x14
[ 554.819482] [<c1037742>] kthread_stop+0x2d/0x4b
[ 554.819486] [<c10330fa>] destroy_worker+0x54/0x74
[ 554.819491] [<c1348d37>] workqueue_cpu_down_callback+0x193/0x251
[ 554.819495] [<c1185d3d>] ? compute_batch_value+0x19/0x29
[ 554.819499] [<c1353d1e>] ? percpu_counter_hotcpu_callback+0x13/0x8b
[ 554.819504] [<c103b6b9>] notifier_call_chain+0x26/0x48
[ 554.819508] [<c103b6fd>] __raw_notifier_call_chain+0xe/0x10
[ 554.819512] [<c1025331>] __cpu_notify+0x15/0x29
[ 554.819516] [<c13471f1>] _cpu_down+0x158/0x2b4
[ 554.819521] [<c1347372>] cpu_down+0x25/0x34
[ 554.819524] [<c13489b6>] store_online+0x29/0x70
[ 554.819528] [<c134898d>] ? acpi_processor_start+0xf7/0xf7
[ 554.819532] [<c127b037>] dev_attr_store+0x1b/0x23
[ 554.819536] [<c10eb6c6>] sysfs_write_file+0xae/0xe7
[ 554.819540] [<c10ab93e>] vfs_write+0x8c/0x122
[ 554.819544] [<c10eb618>] ? sysfs_poll+0x77/0x77
[ 554.819548] [<c10abb8f>] sys_write+0x3b/0x60
[ 554.819552] [<c1357823>] sysenter_do_call+0x12/0x2c
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: BUG: scheduling while atomic: chcpu/6197/0x00000002
2012-06-18 10:19 BUG: scheduling while atomic: chcpu/6197/0x00000002 Thomas Sattler
@ 2012-06-18 12:33 ` Thomas Sattler
2012-06-20 9:15 ` Thomas Sattler
0 siblings, 1 reply; 15+ messages in thread
From: Thomas Sattler @ 2012-06-18 12:33 UTC (permalink / raw)
To: Linux Kernel Mailing List; +Cc: Ingo Molnar, Thomas Gleixner
Vanilla 3.4.3 seems to work, but 3.4.3-rt10 bugs too:
[ 247.758134] BUG: scheduling while atomic: chcpu/2947/0x00000002
[ 247.758137] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid 3c59x uhci_hcd mii ehci_hcd e1000e usbcore usb_common sg
[ 247.758157] Pid: 2947, comm: chcpu Not tainted 3.4.3-rt10 #22
[ 247.758159] Call Trace:
[ 247.758168] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 247.758173] [<c1355394>] __schedule+0x68/0x571
[ 247.758179] [<c1045840>] ? enqueue_entity+0x313/0x3d8
[ 247.758183] [<c103e7da>] ? resched_task+0x3c/0x5a
[ 247.758187] [<c1355942>] schedule+0x60/0x70
[ 247.758191] [<c1354962>] schedule_timeout+0x17/0x160
[ 247.758195] [<c103ed57>] ? check_preempt_curr+0x29/0x64
[ 247.758200] [<c135524d>] wait_for_common+0xa3/0xff
[ 247.758204] [<c10412e2>] ? try_to_wake_up+0x391/0x391
[ 247.758208] [<c135532a>] wait_for_completion+0x12/0x14
[ 247.758213] [<c103781c>] kthread_create_on_node+0x71/0xb5
[ 247.758217] [<c102542c>] ? put_online_cpus+0x44/0x44
[ 247.758222] [<c1350101>] ? init_amd+0x50f/0x64f
[ 247.758227] [<c13471ff>] _cpu_down+0x106/0x2b4
[ 247.758231] [<c102542c>] ? put_online_cpus+0x44/0x44
[ 247.758236] [<c13473d2>] cpu_down+0x25/0x34
[ 247.758240] [<c1348a16>] store_online+0x29/0x70
[ 247.758244] [<c13489ed>] ? acpi_processor_start+0xf7/0xf7
[ 247.758248] [<c127b06f>] dev_attr_store+0x1b/0x23
[ 247.758254] [<c10eb6ce>] sysfs_write_file+0xae/0xe7
[ 247.758259] [<c10ab946>] vfs_write+0x8c/0x122
[ 247.758263] [<c10eb620>] ? sysfs_poll+0x77/0x77
[ 247.758267] [<c10abb97>] sys_write+0x3b/0x60
[ 247.758272] [<c1357863>] sysenter_do_call+0x12/0x2c
[ 247.758297] BUG: scheduling while atomic: chcpu/2947/0x00000002
[ 247.758299] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid 3c59x uhci_hcd mii ehci_hcd e1000e usbcore usb_common sg
[ 247.758315] Pid: 2947, comm: chcpu Not tainted 3.4.3-rt10 #22
[ 247.758317] Call Trace:
[ 247.758322] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 247.758326] [<c1355394>] __schedule+0x68/0x571
[ 247.758331] [<c1356ac1>] ? _raw_spin_unlock_irqrestore+0x1a/0x2f
[ 247.758335] [<c103a992>] ? __hrtimer_start_range_ns+0x2cf/0x2f6
[ 247.758340] [<c1355942>] schedule+0x60/0x70
[ 247.758344] [<c1354e4a>] schedule_hrtimeout_range_clock+0xc5/0xec
[ 247.758348] [<c103a202>] ? update_rmtp+0x68/0x68
[ 247.758352] [<c1354e7b>] schedule_hrtimeout_range+0xa/0xc
[ 247.758356] [<c1354e89>] schedule_hrtimeout+0xc/0xe
[ 247.758361] [<c103f197>] wait_task_inactive+0xc5/0xd6
[ 247.758365] [<c1037773>] kthread_bind+0x13/0x4b
[ 247.758369] [<c134721a>] _cpu_down+0x121/0x2b4
[ 247.758374] [<c13473d2>] cpu_down+0x25/0x34
[ 247.758378] [<c1348a16>] store_online+0x29/0x70
[ 247.758381] [<c13489ed>] ? acpi_processor_start+0xf7/0xf7
[ 247.758385] [<c127b06f>] dev_attr_store+0x1b/0x23
[ 247.758390] [<c10eb6ce>] sysfs_write_file+0xae/0xe7
[ 247.758394] [<c10ab946>] vfs_write+0x8c/0x122
[ 247.758398] [<c10eb620>] ? sysfs_poll+0x77/0x77
[ 247.758402] [<c10abb97>] sys_write+0x3b/0x60
[ 247.758406] [<c1357863>] sysenter_do_call+0x12/0x2c
[ 247.761021] BUG: scheduling while atomic: chcpu/2947/0x00000002
[ 247.761024] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid 3c59x uhci_hcd mii ehci_hcd e1000e usbcore usb_common sg
[ 247.761040] Pid: 2947, comm: chcpu Not tainted 3.4.3-rt10 #22
[ 247.761042] Call Trace:
[ 247.761048] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 247.761052] [<c1355394>] __schedule+0x68/0x571
[ 247.761058] [<c1008017>] ? sched_clock+0x9/0xd
[ 247.761062] [<c10428f5>] ? sched_clock_local+0x11/0x12f
[ 247.761067] [<c1355942>] schedule+0x60/0x70
[ 247.761070] [<c1354962>] schedule_timeout+0x17/0x160
[ 247.761075] [<c135524d>] wait_for_common+0xa3/0xff
[ 247.761079] [<c10412e2>] ? try_to_wake_up+0x391/0x391
[ 247.761083] [<c135532a>] wait_for_completion+0x12/0x14
[ 247.761087] [<c1347229>] _cpu_down+0x130/0x2b4
[ 247.761092] [<c13473d2>] cpu_down+0x25/0x34
[ 247.761095] [<c1348a16>] store_online+0x29/0x70
[ 247.761099] [<c13489ed>] ? acpi_processor_start+0xf7/0xf7
[ 247.761103] [<c127b06f>] dev_attr_store+0x1b/0x23
[ 247.761108] [<c10eb6ce>] sysfs_write_file+0xae/0xe7
[ 247.761112] [<c10ab946>] vfs_write+0x8c/0x122
[ 247.761116] [<c10eb620>] ? sysfs_poll+0x77/0x77
[ 247.761120] [<c10abb97>] sys_write+0x3b/0x60
[ 247.761124] [<c1357863>] sysenter_do_call+0x12/0x2c
[ 247.761159] BUG: scheduling while atomic: chcpu/2947/0x00000002
[ 247.761161] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid 3c59x uhci_hcd mii ehci_hcd e1000e usbcore usb_common sg
[ 247.761177] Pid: 2947, comm: chcpu Not tainted 3.4.3-rt10 #22
[ 247.761179] Call Trace:
[ 247.761184] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 247.761188] [<c1355394>] __schedule+0x68/0x571
[ 247.761193] [<c1008017>] ? sched_clock+0x9/0xd
[ 247.761197] [<c10428f5>] ? sched_clock_local+0x11/0x12f
[ 247.761201] [<c1355942>] schedule+0x60/0x70
[ 247.761205] [<c1354962>] schedule_timeout+0x17/0x160
[ 247.761210] [<c135524d>] wait_for_common+0xa3/0xff
[ 247.761214] [<c10412e2>] ? try_to_wake_up+0x391/0x391
[ 247.761218] [<c135532a>] wait_for_completion+0x12/0x14
[ 247.761222] [<c1037742>] kthread_stop+0x2d/0x4b
[ 247.761227] [<c10330fa>] destroy_worker+0x54/0x74
[ 247.761231] [<c1348d97>] workqueue_cpu_down_callback+0x193/0x251
[ 247.761236] [<c1185d7d>] ? compute_batch_value+0x19/0x29
[ 247.761240] [<c1353d7e>] ? percpu_counter_hotcpu_callback+0x13/0x8b
[ 247.761245] [<c103b6b9>] notifier_call_chain+0x26/0x48
[ 247.761249] [<c103b6fd>] __raw_notifier_call_chain+0xe/0x10
[ 247.761253] [<c1025331>] __cpu_notify+0x15/0x29
[ 247.761257] [<c1347251>] _cpu_down+0x158/0x2b4
[ 247.761262] [<c13473d2>] cpu_down+0x25/0x34
[ 247.761266] [<c1348a16>] store_online+0x29/0x70
[ 247.761269] [<c13489ed>] ? acpi_processor_start+0xf7/0xf7
[ 247.761273] [<c127b06f>] dev_attr_store+0x1b/0x23
[ 247.761278] [<c10eb6ce>] sysfs_write_file+0xae/0xe7
[ 247.761282] [<c10ab946>] vfs_write+0x8c/0x122
[ 247.761286] [<c10eb620>] ? sysfs_poll+0x77/0x77
[ 247.761290] [<c10abb97>] sys_write+0x3b/0x60
[ 247.761294] [<c1357863>] sysenter_do_call+0x12/0x2c
[ 247.761301] BUG: scheduling while atomic: chcpu/2947/0x00000002
[ 247.761303] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid 3c59x uhci_hcd mii ehci_hcd e1000e usbcore usb_common sg
[ 247.761319] Pid: 2947, comm: chcpu Not tainted 3.4.3-rt10 #22
[ 247.761322] Call Trace:
[ 247.761326] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 247.761330] [<c1355394>] __schedule+0x68/0x571
[ 247.761335] [<c1008017>] ? sched_clock+0x9/0xd
[ 247.761341] [<c10428f5>] ? sched_clock_local+0x11/0x12f
[ 247.761345] [<c1355942>] schedule+0x60/0x70
[ 247.761349] [<c1354962>] schedule_timeout+0x17/0x160
[ 247.761353] [<c135524d>] wait_for_common+0xa3/0xff
[ 247.761357] [<c10412e2>] ? try_to_wake_up+0x391/0x391
[ 247.761361] [<c135532a>] wait_for_completion+0x12/0x14
[ 247.761365] [<c1037742>] kthread_stop+0x2d/0x4b
[ 247.761369] [<c10330fa>] destroy_worker+0x54/0x74
[ 247.761373] [<c1348d97>] workqueue_cpu_down_callback+0x193/0x251
[ 247.761378] [<c1185d7d>] ? compute_batch_value+0x19/0x29
[ 247.761382] [<c1353d7e>] ? percpu_counter_hotcpu_callback+0x13/0x8b
[ 247.761387] [<c103b6b9>] notifier_call_chain+0x26/0x48
[ 247.761391] [<c103b6fd>] __raw_notifier_call_chain+0xe/0x10
[ 247.761395] [<c1025331>] __cpu_notify+0x15/0x29
[ 247.761399] [<c1347251>] _cpu_down+0x158/0x2b4
[ 247.761404] [<c13473d2>] cpu_down+0x25/0x34
[ 247.761407] [<c1348a16>] store_online+0x29/0x70
[ 247.761411] [<c13489ed>] ? acpi_processor_start+0xf7/0xf7
[ 247.761415] [<c127b06f>] dev_attr_store+0x1b/0x23
[ 247.761420] [<c10eb6ce>] sysfs_write_file+0xae/0xe7
[ 247.761424] [<c10ab946>] vfs_write+0x8c/0x122
[ 247.761428] [<c10eb620>] ? sysfs_poll+0x77/0x77
[ 247.761432] [<c10abb97>] sys_write+0x3b/0x60
[ 247.761436] [<c1357863>] sysenter_do_call+0x12/0x2c
[ 247.761455] BUG: scheduling while atomic: chcpu/2947/0x00000002
[ 247.761457] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid 3c59x uhci_hcd mii ehci_hcd e1000e usbcore usb_common sg
[ 247.761473] Pid: 2947, comm: chcpu Not tainted 3.4.3-rt10 #22
[ 247.761475] Call Trace:
[ 247.761479] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 247.761483] [<c1355394>] __schedule+0x68/0x571
[ 247.761489] [<c1008017>] ? sched_clock+0x9/0xd
[ 247.761492] [<c10428f5>] ? sched_clock_local+0x11/0x12f
[ 247.761497] [<c1355942>] schedule+0x60/0x70
[ 247.761501] [<c1354962>] schedule_timeout+0x17/0x160
[ 247.761505] [<c135524d>] wait_for_common+0xa3/0xff
[ 247.761509] [<c10412e2>] ? try_to_wake_up+0x391/0x391
[ 247.761513] [<c135532a>] wait_for_completion+0x12/0x14
[ 247.761517] [<c1037742>] kthread_stop+0x2d/0x4b
[ 247.761521] [<c10330fa>] destroy_worker+0x54/0x74
[ 247.761525] [<c1348d97>] workqueue_cpu_down_callback+0x193/0x251
[ 247.761530] [<c1185d7d>] ? compute_batch_value+0x19/0x29
[ 247.761534] [<c1353d7e>] ? percpu_counter_hotcpu_callback+0x13/0x8b
[ 247.761539] [<c103b6b9>] notifier_call_chain+0x26/0x48
[ 247.761543] [<c103b6fd>] __raw_notifier_call_chain+0xe/0x10
[ 247.761547] [<c1025331>] __cpu_notify+0x15/0x29
[ 247.761551] [<c1347251>] _cpu_down+0x158/0x2b4
[ 247.761556] [<c13473d2>] cpu_down+0x25/0x34
[ 247.761560] [<c1348a16>] store_online+0x29/0x70
[ 247.761563] [<c13489ed>] ? acpi_processor_start+0xf7/0xf7
[ 247.761567] [<c127b06f>] dev_attr_store+0x1b/0x23
[ 247.761572] [<c10eb6ce>] sysfs_write_file+0xae/0xe7
[ 247.761576] [<c10ab946>] vfs_write+0x8c/0x122
[ 247.761580] [<c10eb620>] ? sysfs_poll+0x77/0x77
[ 247.761584] [<c10abb97>] sys_write+0x3b/0x60
[ 247.761588] [<c1357863>] sysenter_do_call+0x12/0x2c
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: BUG: scheduling while atomic: chcpu/6197/0x00000002
2012-06-18 12:33 ` Thomas Sattler
@ 2012-06-20 9:15 ` Thomas Sattler
2012-06-25 12:58 ` Thomas Sattler
0 siblings, 1 reply; 15+ messages in thread
From: Thomas Sattler @ 2012-06-20 9:15 UTC (permalink / raw)
To: Linux Kernel Mailing List; +Cc: Ingo Molnar, Thomas Gleixner
Still in 3.4.3-rt11:
[ 191.423385] BUG: scheduling while atomic: chcpu/2831/0x00000002
[ 191.423389] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid uhci_hcd e1000e ehci_hcd usbcore 3c59x mii usb_common sg
[ 191.423408] Pid: 2831, comm: chcpu Not tainted 3.4.3-rt11 #29
[ 191.423411] Call Trace:
[ 191.423419] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 191.423424] [<c1355394>] __schedule+0x68/0x571
[ 191.423430] [<c1045840>] ? enqueue_entity+0x313/0x3d8
[ 191.423434] [<c1355942>] schedule+0x60/0x70
[ 191.423438] [<c1354962>] schedule_timeout+0x17/0x160
[ 191.423442] [<c103ed57>] ? check_preempt_curr+0x29/0x64
[ 191.423447] [<c135524d>] wait_for_common+0xa3/0xff
[ 191.423451] [<c10412e2>] ? try_to_wake_up+0x391/0x391
[ 191.423455] [<c135532a>] wait_for_completion+0x12/0x14
[ 191.423459] [<c103781c>] kthread_create_on_node+0x71/0xb5
[ 191.423464] [<c102542c>] ? put_online_cpus+0x44/0x44
[ 191.423469] [<c1350101>] ? init_amd+0x50f/0x64f
[ 191.423474] [<c13471ff>] _cpu_down+0x106/0x2b4
[ 191.423478] [<c102542c>] ? put_online_cpus+0x44/0x44
[ 191.423483] [<c13473d2>] cpu_down+0x25/0x34
[ 191.423486] [<c1348a16>] store_online+0x29/0x70
[ 191.423490] [<c13489ed>] ? acpi_processor_start+0xf7/0xf7
[ 191.423495] [<c127b06f>] dev_attr_store+0x1b/0x23
[ 191.423500] [<c10eb6ce>] sysfs_write_file+0xae/0xe7
[ 191.423505] [<c10ab946>] vfs_write+0x8c/0x122
[ 191.423509] [<c10eb620>] ? sysfs_poll+0x77/0x77
[ 191.423513] [<c10abb97>] sys_write+0x3b/0x60
[ 191.423518] [<c1357863>] sysenter_do_call+0x12/0x2c
[ 191.423543] BUG: scheduling while atomic: chcpu/2831/0x00000002
[ 191.423545] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid uhci_hcd e1000e ehci_hcd usbcore 3c59x mii usb_common sg
[ 191.423560] Pid: 2831, comm: chcpu Not tainted 3.4.3-rt11 #29
[ 191.423563] Call Trace:
[ 191.423567] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 191.423571] [<c1355394>] __schedule+0x68/0x571
[ 191.423576] [<c1356ac1>] ? _raw_spin_unlock_irqrestore+0x1a/0x2f
[ 191.423580] [<c103a992>] ? __hrtimer_start_range_ns+0x2cf/0x2f6
[ 191.423585] [<c1355942>] schedule+0x60/0x70
[ 191.423589] [<c1354e4a>] schedule_hrtimeout_range_clock+0xc5/0xec
[ 191.423593] [<c103a202>] ? update_rmtp+0x68/0x68
[ 191.423598] [<c1354e7b>] schedule_hrtimeout_range+0xa/0xc
[ 191.423602] [<c1354e89>] schedule_hrtimeout+0xc/0xe
[ 191.423606] [<c103f197>] wait_task_inactive+0xc5/0xd6
[ 191.423610] [<c1037773>] kthread_bind+0x13/0x4b
[ 191.423615] [<c134721a>] _cpu_down+0x121/0x2b4
[ 191.423619] [<c13473d2>] cpu_down+0x25/0x34
[ 191.423623] [<c1348a16>] store_online+0x29/0x70
[ 191.423627] [<c13489ed>] ? acpi_processor_start+0xf7/0xf7
[ 191.423631] [<c127b06f>] dev_attr_store+0x1b/0x23
[ 191.423635] [<c10eb6ce>] sysfs_write_file+0xae/0xe7
[ 191.423639] [<c10ab946>] vfs_write+0x8c/0x122
[ 191.423643] [<c10eb620>] ? sysfs_poll+0x77/0x77
[ 191.423647] [<c10abb97>] sys_write+0x3b/0x60
[ 191.423652] [<c1357863>] sysenter_do_call+0x12/0x2c
[ 191.426368] BUG: scheduling while atomic: chcpu/2831/0x00000002
[ 191.426371] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid uhci_hcd e1000e ehci_hcd usbcore 3c59x mii usb_common sg
[ 191.426387] Pid: 2831, comm: chcpu Not tainted 3.4.3-rt11 #29
[ 191.426389] Call Trace:
[ 191.426394] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 191.426399] [<c1355394>] __schedule+0x68/0x571
[ 191.426405] [<c1008017>] ? sched_clock+0x9/0xd
[ 191.426409] [<c10428f5>] ? sched_clock_local+0x11/0x12f
[ 191.426413] [<c1355942>] schedule+0x60/0x70
[ 191.426417] [<c1354962>] schedule_timeout+0x17/0x160
[ 191.426421] [<c135524d>] wait_for_common+0xa3/0xff
[ 191.426425] [<c10412e2>] ? try_to_wake_up+0x391/0x391
[ 191.426430] [<c135532a>] wait_for_completion+0x12/0x14
[ 191.426434] [<c1347229>] _cpu_down+0x130/0x2b4
[ 191.426439] [<c13473d2>] cpu_down+0x25/0x34
[ 191.426442] [<c1348a16>] store_online+0x29/0x70
[ 191.426446] [<c13489ed>] ? acpi_processor_start+0xf7/0xf7
[ 191.426450] [<c127b06f>] dev_attr_store+0x1b/0x23
[ 191.426454] [<c10eb6ce>] sysfs_write_file+0xae/0xe7
[ 191.426459] [<c10ab946>] vfs_write+0x8c/0x122
[ 191.426463] [<c10eb620>] ? sysfs_poll+0x77/0x77
[ 191.426467] [<c10abb97>] sys_write+0x3b/0x60
[ 191.426471] [<c1357863>] sysenter_do_call+0x12/0x2c
[ 191.426507] BUG: scheduling while atomic: chcpu/2831/0x00000002
[ 191.426509] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid uhci_hcd e1000e ehci_hcd usbcore 3c59x mii usb_common sg
[ 191.426525] Pid: 2831, comm: chcpu Not tainted 3.4.3-rt11 #29
[ 191.426527] Call Trace:
[ 191.426531] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 191.426535] [<c1355394>] __schedule+0x68/0x571
[ 191.426540] [<c1008017>] ? sched_clock+0x9/0xd
[ 191.426544] [<c10428f5>] ? sched_clock_local+0x11/0x12f
[ 191.426549] [<c1355942>] schedule+0x60/0x70
[ 191.426553] [<c1354962>] schedule_timeout+0x17/0x160
[ 191.426557] [<c135524d>] wait_for_common+0xa3/0xff
[ 191.426561] [<c10412e2>] ? try_to_wake_up+0x391/0x391
[ 191.426565] [<c135532a>] wait_for_completion+0x12/0x14
[ 191.426569] [<c1037742>] kthread_stop+0x2d/0x4b
[ 191.426574] [<c10330fa>] destroy_worker+0x54/0x74
[ 191.426578] [<c1348d97>] workqueue_cpu_down_callback+0x193/0x251
[ 191.426583] [<c1185d7d>] ? compute_batch_value+0x19/0x29
[ 191.426588] [<c1353d7e>] ? percpu_counter_hotcpu_callback+0x13/0x8b
[ 191.426593] [<c103b6b9>] notifier_call_chain+0x26/0x48
[ 191.426597] [<c103b6fd>] __raw_notifier_call_chain+0xe/0x10
[ 191.426601] [<c1025331>] __cpu_notify+0x15/0x29
[ 191.426605] [<c1347251>] _cpu_down+0x158/0x2b4
[ 191.426610] [<c13473d2>] cpu_down+0x25/0x34
[ 191.426614] [<c1348a16>] store_online+0x29/0x70
[ 191.426617] [<c13489ed>] ? acpi_processor_start+0xf7/0xf7
[ 191.426622] [<c127b06f>] dev_attr_store+0x1b/0x23
[ 191.426626] [<c10eb6ce>] sysfs_write_file+0xae/0xe7
[ 191.426630] [<c10ab946>] vfs_write+0x8c/0x122
[ 191.426634] [<c10eb620>] ? sysfs_poll+0x77/0x77
[ 191.426638] [<c10abb97>] sys_write+0x3b/0x60
[ 191.426643] [<c1357863>] sysenter_do_call+0x12/0x2c
[ 191.426650] BUG: scheduling while atomic: chcpu/2831/0x00000002
[ 191.426652] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid uhci_hcd e1000e ehci_hcd usbcore 3c59x mii usb_common sg
[ 191.426667] Pid: 2831, comm: chcpu Not tainted 3.4.3-rt11 #29
[ 191.426670] Call Trace:
[ 191.426674] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 191.426678] [<c1355394>] __schedule+0x68/0x571
[ 191.426683] [<c1008017>] ? sched_clock+0x9/0xd
[ 191.426687] [<c10428f5>] ? sched_clock_local+0x11/0x12f
[ 191.426691] [<c1355942>] schedule+0x60/0x70
[ 191.426695] [<c1354962>] schedule_timeout+0x17/0x160
[ 191.426699] [<c135524d>] wait_for_common+0xa3/0xff
[ 191.426703] [<c10412e2>] ? try_to_wake_up+0x391/0x391
[ 191.426708] [<c135532a>] wait_for_completion+0x12/0x14
[ 191.426712] [<c1037742>] kthread_stop+0x2d/0x4b
[ 191.426716] [<c10330fa>] destroy_worker+0x54/0x74
[ 191.426720] [<c1348d97>] workqueue_cpu_down_callback+0x193/0x251
[ 191.426724] [<c1185d7d>] ? compute_batch_value+0x19/0x29
[ 191.426729] [<c1353d7e>] ? percpu_counter_hotcpu_callback+0x13/0x8b
[ 191.426733] [<c103b6b9>] notifier_call_chain+0x26/0x48
[ 191.426738] [<c103b6fd>] __raw_notifier_call_chain+0xe/0x10
[ 191.426742] [<c1025331>] __cpu_notify+0x15/0x29
[ 191.426746] [<c1347251>] _cpu_down+0x158/0x2b4
[ 191.426751] [<c13473d2>] cpu_down+0x25/0x34
[ 191.426754] [<c1348a16>] store_online+0x29/0x70
[ 191.426758] [<c13489ed>] ? acpi_processor_start+0xf7/0xf7
[ 191.426762] [<c127b06f>] dev_attr_store+0x1b/0x23
[ 191.426766] [<c10eb6ce>] sysfs_write_file+0xae/0xe7
[ 191.426771] [<c10ab946>] vfs_write+0x8c/0x122
[ 191.426775] [<c10eb620>] ? sysfs_poll+0x77/0x77
[ 191.426779] [<c10abb97>] sys_write+0x3b/0x60
[ 191.426783] [<c1357863>] sysenter_do_call+0x12/0x2c
[ 191.426789] BUG: scheduling while atomic: chcpu/2831/0x00000002
[ 191.426791] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid uhci_hcd e1000e ehci_hcd usbcore 3c59x mii usb_common sg
[ 191.426807] Pid: 2831, comm: chcpu Not tainted 3.4.3-rt11 #29
[ 191.426809] Call Trace:
[ 191.426813] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 191.426817] [<c1355394>] __schedule+0x68/0x571
[ 191.426822] [<c1008017>] ? sched_clock+0x9/0xd
[ 191.426828] [<c10428f5>] ? sched_clock_local+0x11/0x12f
[ 191.426832] [<c1355942>] schedule+0x60/0x70
[ 191.426836] [<c1354962>] schedule_timeout+0x17/0x160
[ 191.426840] [<c135524d>] wait_for_common+0xa3/0xff
[ 191.426845] [<c10412e2>] ? try_to_wake_up+0x391/0x391
[ 191.426849] [<c135532a>] wait_for_completion+0x12/0x14
[ 191.426853] [<c1037742>] kthread_stop+0x2d/0x4b
[ 191.426857] [<c10330fa>] destroy_worker+0x54/0x74
[ 191.426861] [<c1348d97>] workqueue_cpu_down_callback+0x193/0x251
[ 191.426865] [<c1185d7d>] ? compute_batch_value+0x19/0x29
[ 191.426870] [<c1353d7e>] ? percpu_counter_hotcpu_callback+0x13/0x8b
[ 191.426874] [<c103b6b9>] notifier_call_chain+0x26/0x48
[ 191.426879] [<c103b6fd>] __raw_notifier_call_chain+0xe/0x10
[ 191.426883] [<c1025331>] __cpu_notify+0x15/0x29
[ 191.426887] [<c1347251>] _cpu_down+0x158/0x2b4
[ 191.426892] [<c13473d2>] cpu_down+0x25/0x34
[ 191.426895] [<c1348a16>] store_online+0x29/0x70
[ 191.426899] [<c13489ed>] ? acpi_processor_start+0xf7/0xf7
[ 191.426903] [<c127b06f>] dev_attr_store+0x1b/0x23
[ 191.426907] [<c10eb6ce>] sysfs_write_file+0xae/0xe7
[ 191.426912] [<c10ab946>] vfs_write+0x8c/0x122
[ 191.426916] [<c10eb620>] ? sysfs_poll+0x77/0x77
[ 191.426920] [<c10abb97>] sys_write+0x3b/0x60
[ 191.426924] [<c1357863>] sysenter_do_call+0x12/0x2c
[ 191.426943] BUG: scheduling while atomic: chcpu/2831/0x00000002
[ 191.426945] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid uhci_hcd e1000e ehci_hcd usbcore 3c59x mii usb_common sg
[ 191.426960] Pid: 2831, comm: chcpu Not tainted 3.4.3-rt11 #29
[ 191.426963] Call Trace:
[ 191.426967] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 191.426971] [<c1355394>] __schedule+0x68/0x571
[ 191.426976] [<c1008017>] ? sched_clock+0x9/0xd
[ 191.426980] [<c10428f5>] ? sched_clock_local+0x11/0x12f
[ 191.426985] [<c1355942>] schedule+0x60/0x70
[ 191.426988] [<c1354962>] schedule_timeout+0x17/0x160
[ 191.426993] [<c135524d>] wait_for_common+0xa3/0xff
[ 191.426997] [<c10412e2>] ? try_to_wake_up+0x391/0x391
[ 191.427010] [<c135532a>] wait_for_completion+0x12/0x14
[ 191.427014] [<c1037742>] kthread_stop+0x2d/0x4b
[ 191.427019] [<c10330fa>] destroy_worker+0x54/0x74
[ 191.427023] [<c1348d97>] workqueue_cpu_down_callback+0x193/0x251
[ 191.427027] [<c1185d7d>] ? compute_batch_value+0x19/0x29
[ 191.427032] [<c1353d7e>] ? percpu_counter_hotcpu_callback+0x13/0x8b
[ 191.427036] [<c103b6b9>] notifier_call_chain+0x26/0x48
[ 191.427040] [<c103b6fd>] __raw_notifier_call_chain+0xe/0x10
[ 191.427044] [<c1025331>] __cpu_notify+0x15/0x29
[ 191.427049] [<c1347251>] _cpu_down+0x158/0x2b4
[ 191.427053] [<c13473d2>] cpu_down+0x25/0x34
[ 191.427057] [<c1348a16>] store_online+0x29/0x70
[ 191.427061] [<c13489ed>] ? acpi_processor_start+0xf7/0xf7
[ 191.427065] [<c127b06f>] dev_attr_store+0x1b/0x23
[ 191.427069] [<c10eb6ce>] sysfs_write_file+0xae/0xe7
[ 191.427073] [<c10ab946>] vfs_write+0x8c/0x122
[ 191.427077] [<c10eb620>] ? sysfs_poll+0x77/0x77
[ 191.427081] [<c10abb97>] sys_write+0x3b/0x60
[ 191.427086] [<c1357863>] sysenter_do_call+0x12/0x2c
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: BUG: scheduling while atomic: chcpu/6197/0x00000002
2012-06-20 9:15 ` Thomas Sattler
@ 2012-06-25 12:58 ` Thomas Sattler
2012-06-27 11:41 ` Thomas Sattler
0 siblings, 1 reply; 15+ messages in thread
From: Thomas Sattler @ 2012-06-25 12:58 UTC (permalink / raw)
To: Linux Kernel Mailing List; +Cc: Ingo Molnar, Thomas Gleixner
Hi again ...
seems there is a little progress in 3.4.3-rt12-rc1: While
the BUG message still is in 'dmesg' and the call trace is
identical to 3.4.3-rt11 (except the PID of 'chcpu' and
the order of the list of modules), the 'chcpu' process
doesn't hang anymore and the machine can be rebooted
after the BUG occured.
Thomas
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: BUG: scheduling while atomic: chcpu/6197/0x00000002
2012-06-25 12:58 ` Thomas Sattler
@ 2012-06-27 11:41 ` Thomas Sattler
2012-06-27 12:26 ` Fwd: " richard -rw- weinberger
2012-06-27 17:46 ` Borislav Petkov
0 siblings, 2 replies; 15+ messages in thread
From: Thomas Sattler @ 2012-06-27 11:41 UTC (permalink / raw)
To: Linux Kernel Mailing List; +Cc: Ingo Molnar, Thomas Gleixner
Linux dragon 3.4.4-rt13 #2 SMP PREEMPT Tue Jun 26 12:22:23 CEST 2012
i686 Intel(R) Core(TM)2 CPU 6300 @ 1.86GHz GenuineIntel GNU/Linux
still BUG message in dmesg:
[ 105.585086] BUG: scheduling while atomic: chcpu/2817/0x00000002
[ 105.585090] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid uhci_hcd ehci_hcd 3c59x usbcore e1000e mii usb_common sg
[ 105.585109] Pid: 2817, comm: chcpu Not tainted 3.4.4-rt13 #2
[ 105.585111] Call Trace:
[ 105.585119] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 105.585124] [<c1355474>] __schedule+0x68/0x571
[ 105.585130] [<c1045840>] ? enqueue_entity+0x313/0x3d8
[ 105.585134] [<c1355a22>] schedule+0x60/0x70
[ 105.585138] [<c1354a42>] schedule_timeout+0x17/0x160
[ 105.585142] [<c103ed57>] ? check_preempt_curr+0x29/0x64
[ 105.585146] [<c135532d>] wait_for_common+0xa3/0xff
[ 105.585150] [<c10412e2>] ? try_to_wake_up+0x391/0x391
[ 105.585154] [<c135540a>] wait_for_completion+0x12/0x14
[ 105.585158] [<c103781c>] kthread_create_on_node+0x71/0xb5
[ 105.585162] [<c102542c>] ? put_online_cpus+0x44/0x44
[ 105.585167] [<c1350101>] ? init_amd+0x42f/0x64f
[ 105.585172] [<c134727f>] _cpu_down+0x106/0x2b4
[ 105.585176] [<c102542c>] ? put_online_cpus+0x44/0x44
[ 105.585180] [<c1347452>] cpu_down+0x25/0x34
[ 105.585183] [<c1348a96>] store_online+0x29/0x70
[ 105.585187] [<c1348a6d>] ? acpi_processor_start+0xf7/0xf7
[ 105.585192] [<c127b0ef>] dev_attr_store+0x1b/0x23
[ 105.585197] [<c10eb73e>] sysfs_write_file+0xae/0xe7
[ 105.585201] [<c10ab9b6>] vfs_write+0x8c/0x122
[ 105.585205] [<c10eb690>] ? sysfs_poll+0x77/0x77
[ 105.585209] [<c10abc07>] sys_write+0x3b/0x60
[ 105.585214] [<c1357963>] sysenter_do_call+0x12/0x2c
[ 105.585242] BUG: scheduling while atomic: chcpu/2817/0x00000002
[ 105.585244] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid uhci_hcd ehci_hcd 3c59x usbcore e1000e mii usb_common sg
[ 105.585260] Pid: 2817, comm: chcpu Not tainted 3.4.4-rt13 #2
[ 105.585262] Call Trace:
[ 105.585266] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 105.585270] [<c1355474>] __schedule+0x68/0x571
[ 105.585275] [<c1356ba1>] ? _raw_spin_unlock_irqrestore+0x1a/0x2f
[ 105.585279] [<c103a992>] ? __hrtimer_start_range_ns+0x2cf/0x2f6
[ 105.585283] [<c1355a22>] schedule+0x60/0x70
[ 105.585287] [<c1354f2a>] schedule_hrtimeout_range_clock+0xc5/0xec
[ 105.585291] [<c103a202>] ? update_rmtp+0x68/0x68
[ 105.585295] [<c1354f5b>] schedule_hrtimeout_range+0xa/0xc
[ 105.585299] [<c1354f69>] schedule_hrtimeout+0xc/0xe
[ 105.585303] [<c103f197>] wait_task_inactive+0xc5/0xd6
[ 105.585307] [<c1037773>] kthread_bind+0x13/0x4b
[ 105.585312] [<c134729a>] _cpu_down+0x121/0x2b4
[ 105.585316] [<c1347452>] cpu_down+0x25/0x34
[ 105.585319] [<c1348a96>] store_online+0x29/0x70
[ 105.585323] [<c1348a6d>] ? acpi_processor_start+0xf7/0xf7
[ 105.585327] [<c127b0ef>] dev_attr_store+0x1b/0x23
[ 105.585331] [<c10eb73e>] sysfs_write_file+0xae/0xe7
[ 105.585335] [<c10ab9b6>] vfs_write+0x8c/0x122
[ 105.585339] [<c10eb690>] ? sysfs_poll+0x77/0x77
[ 105.585342] [<c10abc07>] sys_write+0x3b/0x60
[ 105.585347] [<c1357963>] sysenter_do_call+0x12/0x2c
[...]
^ permalink raw reply [flat|nested] 15+ messages in thread
* Fwd: BUG: scheduling while atomic: chcpu/6197/0x00000002
2012-06-27 11:41 ` Thomas Sattler
@ 2012-06-27 12:26 ` richard -rw- weinberger
2012-06-27 12:37 ` Steven Rostedt
2012-06-27 17:46 ` Borislav Petkov
1 sibling, 1 reply; 15+ messages in thread
From: richard -rw- weinberger @ 2012-06-27 12:26 UTC (permalink / raw)
To: sattler; +Cc: Thomas Gleixner, Steven Rostedt, rt-users
CC'ing the right guys...
---------- Forwarded message ----------
From: Thomas Sattler <sattler@med.uni-frankfurt.de>
Date: Wed, Jun 27, 2012 at 1:41 PM
Subject: Re: BUG: scheduling while atomic: chcpu/6197/0x00000002
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>, Thomas Gleixner <tglx@linutronix.de>
Linux dragon 3.4.4-rt13 #2 SMP PREEMPT Tue Jun 26 12:22:23 CEST 2012
i686 Intel(R) Core(TM)2 CPU 6300 @ 1.86GHz GenuineIntel GNU/Linux
still BUG message in dmesg:
[ 105.585086] BUG: scheduling while atomic: chcpu/2817/0x00000002
[ 105.585090] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid uhci_hcd ehci_hcd 3c59x usbcore e1000e mii usb_common sg
[ 105.585109] Pid: 2817, comm: chcpu Not tainted 3.4.4-rt13 #2
[ 105.585111] Call Trace:
[ 105.585119] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 105.585124] [<c1355474>] __schedule+0x68/0x571
[ 105.585130] [<c1045840>] ? enqueue_entity+0x313/0x3d8
[ 105.585134] [<c1355a22>] schedule+0x60/0x70
[ 105.585138] [<c1354a42>] schedule_timeout+0x17/0x160
[ 105.585142] [<c103ed57>] ? check_preempt_curr+0x29/0x64
[ 105.585146] [<c135532d>] wait_for_common+0xa3/0xff
[ 105.585150] [<c10412e2>] ? try_to_wake_up+0x391/0x391
[ 105.585154] [<c135540a>] wait_for_completion+0x12/0x14
[ 105.585158] [<c103781c>] kthread_create_on_node+0x71/0xb5
[ 105.585162] [<c102542c>] ? put_online_cpus+0x44/0x44
[ 105.585167] [<c1350101>] ? init_amd+0x42f/0x64f
[ 105.585172] [<c134727f>] _cpu_down+0x106/0x2b4
[ 105.585176] [<c102542c>] ? put_online_cpus+0x44/0x44
[ 105.585180] [<c1347452>] cpu_down+0x25/0x34
[ 105.585183] [<c1348a96>] store_online+0x29/0x70
[ 105.585187] [<c1348a6d>] ? acpi_processor_start+0xf7/0xf7
[ 105.585192] [<c127b0ef>] dev_attr_store+0x1b/0x23
[ 105.585197] [<c10eb73e>] sysfs_write_file+0xae/0xe7
[ 105.585201] [<c10ab9b6>] vfs_write+0x8c/0x122
[ 105.585205] [<c10eb690>] ? sysfs_poll+0x77/0x77
[ 105.585209] [<c10abc07>] sys_write+0x3b/0x60
[ 105.585214] [<c1357963>] sysenter_do_call+0x12/0x2c
[ 105.585242] BUG: scheduling while atomic: chcpu/2817/0x00000002
[ 105.585244] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid uhci_hcd ehci_hcd 3c59x usbcore e1000e mii usb_common sg
[ 105.585260] Pid: 2817, comm: chcpu Not tainted 3.4.4-rt13 #2
[ 105.585262] Call Trace:
[ 105.585266] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 105.585270] [<c1355474>] __schedule+0x68/0x571
[ 105.585275] [<c1356ba1>] ? _raw_spin_unlock_irqrestore+0x1a/0x2f
[ 105.585279] [<c103a992>] ? __hrtimer_start_range_ns+0x2cf/0x2f6
[ 105.585283] [<c1355a22>] schedule+0x60/0x70
[ 105.585287] [<c1354f2a>] schedule_hrtimeout_range_clock+0xc5/0xec
[ 105.585291] [<c103a202>] ? update_rmtp+0x68/0x68
[ 105.585295] [<c1354f5b>] schedule_hrtimeout_range+0xa/0xc
[ 105.585299] [<c1354f69>] schedule_hrtimeout+0xc/0xe
[ 105.585303] [<c103f197>] wait_task_inactive+0xc5/0xd6
[ 105.585307] [<c1037773>] kthread_bind+0x13/0x4b
[ 105.585312] [<c134729a>] _cpu_down+0x121/0x2b4
[ 105.585316] [<c1347452>] cpu_down+0x25/0x34
[ 105.585319] [<c1348a96>] store_online+0x29/0x70
[ 105.585323] [<c1348a6d>] ? acpi_processor_start+0xf7/0xf7
[ 105.585327] [<c127b0ef>] dev_attr_store+0x1b/0x23
[ 105.585331] [<c10eb73e>] sysfs_write_file+0xae/0xe7
[ 105.585335] [<c10ab9b6>] vfs_write+0x8c/0x122
[ 105.585339] [<c10eb690>] ? sysfs_poll+0x77/0x77
[ 105.585342] [<c10abc07>] sys_write+0x3b/0x60
[ 105.585347] [<c1357963>] sysenter_do_call+0x12/0x2c
[...]
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
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Please read the FAQ at http://www.tux.org/lkml/
--
Thanks,
//richard
--
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^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: Fwd: BUG: scheduling while atomic: chcpu/6197/0x00000002
2012-06-27 12:26 ` Fwd: " richard -rw- weinberger
@ 2012-06-27 12:37 ` Steven Rostedt
2012-06-27 13:32 ` Thomas Sattler
0 siblings, 1 reply; 15+ messages in thread
From: Steven Rostedt @ 2012-06-27 12:37 UTC (permalink / raw)
To: richard -rw- weinberger; +Cc: sattler, Thomas Gleixner, rt-users
On Wed, 2012-06-27 at 14:26 +0200, richard -rw- weinberger wrote:
> [ 105.585086] BUG: scheduling while atomic: chcpu/2817/0x00000002
> [ 105.585090] Modules linked in: loop rfcomm bnep btusb hid_microsoft
> usbhid hid uhci_hcd ehci_hcd 3c59x usbcore e1000e mii usb_common sg
> [ 105.585109] Pid: 2817, comm: chcpu Not tainted 3.4.4-rt13 #2
> [ 105.585111] Call Trace:
> [ 105.585119] [<c103df4d>] __schedule_bug+0x3d/0x42
> [ 105.585124] [<c1355474>] __schedule+0x68/0x571
> [ 105.585130] [<c1045840>] ? enqueue_entity+0x313/0x3d8
> [ 105.585134] [<c1355a22>] schedule+0x60/0x70
> [ 105.585138] [<c1354a42>] schedule_timeout+0x17/0x160
> [ 105.585142] [<c103ed57>] ? check_preempt_curr+0x29/0x64
> [ 105.585146] [<c135532d>] wait_for_common+0xa3/0xff
> [ 105.585150] [<c10412e2>] ? try_to_wake_up+0x391/0x391
> [ 105.585154] [<c135540a>] wait_for_completion+0x12/0x14
> [ 105.585158] [<c103781c>] kthread_create_on_node+0x71/0xb5
> [ 105.585162] [<c102542c>] ? put_online_cpus+0x44/0x44
> [ 105.585167] [<c1350101>] ? init_amd+0x42f/0x64f
> [ 105.585172] [<c134727f>] _cpu_down+0x106/0x2b4
I believe CPU hotplug is still an issue with -rt, and this is a known
problem.
-- Steve
> [ 105.585176] [<c102542c>] ? put_online_cpus+0x44/0x44
> [ 105.585180] [<c1347452>] cpu_down+0x25/0x34
> [ 105.585183] [<c1348a96>] store_online+0x29/0x70
> [ 105.585187] [<c1348a6d>] ? acpi_processor_start+0xf7/0xf7
> [ 105.585192] [<c127b0ef>] dev_attr_store+0x1b/0x23
> [ 105.585197] [<c10eb73e>] sysfs_write_file+0xae/0xe7
> [ 105.585201] [<c10ab9b6>] vfs_write+0x8c/0x122
> [ 105.585205] [<c10eb690>] ? sysfs_poll+0x77/0x77
> [ 105.585209] [<c10abc07>] sys_write+0x3b/0x60
> [ 105.585214] [<c1357963>] sysenter_do_call+0x12/0x2c
> [ 105.585242] BUG: scheduling while atomic: chcpu/2817/0x00000002
> [ 105.585244] Modules linked in: loop rfcomm bnep btusb hid_microsoft
> usbhid hid uhci_hcd ehci_hcd 3c59x usbcore e1000e mii usb_common sg
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: Fwd: BUG: scheduling while atomic: chcpu/6197/0x00000002
2012-06-27 12:37 ` Steven Rostedt
@ 2012-06-27 13:32 ` Thomas Sattler
2012-06-27 14:01 ` Tim Sally
0 siblings, 1 reply; 15+ messages in thread
From: Thomas Sattler @ 2012-06-27 13:32 UTC (permalink / raw)
To: Steven Rostedt; +Cc: richard -rw- weinberger, Thomas Gleixner, rt-users
> I believe CPU hotplug is still an issue with -rt, and
> this is a known problem.
Is there an (un-)official list of known problems? I'd
like to help by reporting issues without repeating
already known issues over and over again. :-)
Thomas
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: Fwd: BUG: scheduling while atomic: chcpu/6197/0x00000002
2012-06-27 13:32 ` Thomas Sattler
@ 2012-06-27 14:01 ` Tim Sally
2012-06-27 14:21 ` Steven Rostedt
0 siblings, 1 reply; 15+ messages in thread
From: Tim Sally @ 2012-06-27 14:01 UTC (permalink / raw)
To: Thomas Sattler
Cc: Steven Rostedt, richard -rw- weinberger, Thomas Gleixner, rt-users
I'm interested in this as well. -Tim
On Wed, Jun 27, 2012 at 03:32:06PM +0200, Thomas Sattler wrote:
> > I believe CPU hotplug is still an issue with -rt, and
> > this is a known problem.
>
> Is there an (un-)official list of known problems? I'd
> like to help by reporting issues without repeating
> already known issues over and over again. :-)
>
> Thomas
> --
> To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: Fwd: BUG: scheduling while atomic: chcpu/6197/0x00000002
2012-06-27 14:01 ` Tim Sally
@ 2012-06-27 14:21 ` Steven Rostedt
0 siblings, 0 replies; 15+ messages in thread
From: Steven Rostedt @ 2012-06-27 14:21 UTC (permalink / raw)
To: Tim Sally
Cc: Thomas Sattler, richard -rw- weinberger, Thomas Gleixner, rt-users
On Wed, 2012-06-27 at 10:01 -0400, Tim Sally wrote:
> I'm interested in this as well. -Tim
>
> On Wed, Jun 27, 2012 at 03:32:06PM +0200, Thomas Sattler wrote:
> > > I believe CPU hotplug is still an issue with -rt, and
> > > this is a known problem.
> >
> > Is there an (un-)official list of known problems? I'd
> > like to help by reporting issues without repeating
> > already known issues over and over again. :-)
Unfortunately, I do not believe such a list exists. Perhaps one should
be created ;-)
-- Steve
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: BUG: scheduling while atomic: chcpu/6197/0x00000002
2012-06-27 11:41 ` Thomas Sattler
2012-06-27 12:26 ` Fwd: " richard -rw- weinberger
@ 2012-06-27 17:46 ` Borislav Petkov
2012-06-28 5:58 ` Thomas Sattler
1 sibling, 1 reply; 15+ messages in thread
From: Borislav Petkov @ 2012-06-27 17:46 UTC (permalink / raw)
To: Thomas Sattler; +Cc: Linux Kernel Mailing List, Ingo Molnar, Thomas Gleixner
On Wed, Jun 27, 2012 at 01:41:25PM +0200, Thomas Sattler wrote:
> Linux dragon 3.4.4-rt13 #2 SMP PREEMPT Tue Jun 26 12:22:23 CEST 2012
> i686 Intel(R) Core(TM)2 CPU 6300 @ 1.86GHz GenuineIntel GNU/Linux
>
> still BUG message in dmesg:
>
> [ 105.585086] BUG: scheduling while atomic: chcpu/2817/0x00000002
> [ 105.585090] Modules linked in: loop rfcomm bnep btusb hid_microsoft
> usbhid hid uhci_hcd ehci_hcd 3c59x usbcore e1000e mii usb_common sg
> [ 105.585109] Pid: 2817, comm: chcpu Not tainted 3.4.4-rt13 #2
> [ 105.585111] Call Trace:
> [ 105.585119] [<c103df4d>] __schedule_bug+0x3d/0x42
> [ 105.585124] [<c1355474>] __schedule+0x68/0x571
> [ 105.585130] [<c1045840>] ? enqueue_entity+0x313/0x3d8
> [ 105.585134] [<c1355a22>] schedule+0x60/0x70
> [ 105.585138] [<c1354a42>] schedule_timeout+0x17/0x160
> [ 105.585142] [<c103ed57>] ? check_preempt_curr+0x29/0x64
> [ 105.585146] [<c135532d>] wait_for_common+0xa3/0xff
> [ 105.585150] [<c10412e2>] ? try_to_wake_up+0x391/0x391
> [ 105.585154] [<c135540a>] wait_for_completion+0x12/0x14
> [ 105.585158] [<c103781c>] kthread_create_on_node+0x71/0xb5
> [ 105.585162] [<c102542c>] ? put_online_cpus+0x44/0x44
> [ 105.585167] [<c1350101>] ? init_amd+0x42f/0x64f
^^^^^^^^
AFAICT, this shouldn't run on Intel hw. Can you send your .config. Also,
can you try latest mainline linux from Linus' git?
Thanks.
--
Regards/Gruss,
Boris.
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: BUG: scheduling while atomic: chcpu/6197/0x00000002
2012-06-27 17:46 ` Borislav Petkov
@ 2012-06-28 5:58 ` Thomas Sattler
2012-06-28 6:42 ` Borislav Petkov
0 siblings, 1 reply; 15+ messages in thread
From: Thomas Sattler @ 2012-06-28 5:58 UTC (permalink / raw)
To: Borislav Petkov, Linux Kernel Mailing List, Ingo Molnar, Thomas Gleixner
[-- Attachment #1: Type: text/plain, Size: 1473 bytes --]
Am 27.06.2012 19:46, schrieb Borislav Petkov:
> On Wed, Jun 27, 2012 at 01:41:25PM +0200, Thomas Sattler wrote:
>> Linux dragon 3.4.4-rt13 #2 SMP PREEMPT Tue Jun 26 12:22:23 CEST 2012
>> i686 Intel(R) Core(TM)2 CPU 6300 @ 1.86GHz GenuineIntel GNU/Linux
>>
>> still BUG message in dmesg:
>>
>> [ 105.585086] BUG: scheduling while atomic: chcpu/2817/0x00000002
>> [ 105.585090] Modules linked in: loop rfcomm bnep btusb hid_microsoft
>> usbhid hid uhci_hcd ehci_hcd 3c59x usbcore e1000e mii usb_common sg
>> [ 105.585109] Pid: 2817, comm: chcpu Not tainted 3.4.4-rt13 #2
>> [ 105.585111] Call Trace:
>> [ 105.585119] [<c103df4d>] __schedule_bug+0x3d/0x42
>> [ 105.585124] [<c1355474>] __schedule+0x68/0x571
>> [ 105.585130] [<c1045840>] ? enqueue_entity+0x313/0x3d8
>> [ 105.585134] [<c1355a22>] schedule+0x60/0x70
>> [ 105.585138] [<c1354a42>] schedule_timeout+0x17/0x160
>> [ 105.585142] [<c103ed57>] ? check_preempt_curr+0x29/0x64
>> [ 105.585146] [<c135532d>] wait_for_common+0xa3/0xff
>> [ 105.585150] [<c10412e2>] ? try_to_wake_up+0x391/0x391
>> [ 105.585154] [<c135540a>] wait_for_completion+0x12/0x14
>> [ 105.585158] [<c103781c>] kthread_create_on_node+0x71/0xb5
>> [ 105.585162] [<c102542c>] ? put_online_cpus+0x44/0x44
>> [ 105.585167] [<c1350101>] ? init_amd+0x42f/0x64f
> ^^^^^^^^
>
> AFAICT, this shouldn't run on Intel hw. Can you send your .config.
/proc/config.gz is attached. Please note, that it's an -rt kernel.
Thomas
[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 15178 bytes --]
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: BUG: scheduling while atomic: chcpu/6197/0x00000002
2012-06-28 5:58 ` Thomas Sattler
@ 2012-06-28 6:42 ` Borislav Petkov
2012-06-28 9:24 ` Thomas Sattler
0 siblings, 1 reply; 15+ messages in thread
From: Borislav Petkov @ 2012-06-28 6:42 UTC (permalink / raw)
To: Thomas Sattler; +Cc: Linux Kernel Mailing List, Ingo Molnar, Thomas Gleixner
On Thu, Jun 28, 2012 at 07:58:15AM +0200, Thomas Sattler wrote:
> Am 27.06.2012 19:46, schrieb Borislav Petkov:
> > On Wed, Jun 27, 2012 at 01:41:25PM +0200, Thomas Sattler wrote:
> >> Linux dragon 3.4.4-rt13 #2 SMP PREEMPT Tue Jun 26 12:22:23 CEST 2012
> >> i686 Intel(R) Core(TM)2 CPU 6300 @ 1.86GHz GenuineIntel GNU/Linux
> >>
> >> still BUG message in dmesg:
> >>
> >> [ 105.585086] BUG: scheduling while atomic: chcpu/2817/0x00000002
> >> [ 105.585090] Modules linked in: loop rfcomm bnep btusb hid_microsoft
> >> usbhid hid uhci_hcd ehci_hcd 3c59x usbcore e1000e mii usb_common sg
> >> [ 105.585109] Pid: 2817, comm: chcpu Not tainted 3.4.4-rt13 #2
> >> [ 105.585111] Call Trace:
> >> [ 105.585119] [<c103df4d>] __schedule_bug+0x3d/0x42
> >> [ 105.585124] [<c1355474>] __schedule+0x68/0x571
> >> [ 105.585130] [<c1045840>] ? enqueue_entity+0x313/0x3d8
> >> [ 105.585134] [<c1355a22>] schedule+0x60/0x70
> >> [ 105.585138] [<c1354a42>] schedule_timeout+0x17/0x160
> >> [ 105.585142] [<c103ed57>] ? check_preempt_curr+0x29/0x64
> >> [ 105.585146] [<c135532d>] wait_for_common+0xa3/0xff
> >> [ 105.585150] [<c10412e2>] ? try_to_wake_up+0x391/0x391
> >> [ 105.585154] [<c135540a>] wait_for_completion+0x12/0x14
> >> [ 105.585158] [<c103781c>] kthread_create_on_node+0x71/0xb5
> >> [ 105.585162] [<c102542c>] ? put_online_cpus+0x44/0x44
> >> [ 105.585167] [<c1350101>] ? init_amd+0x42f/0x64f
> > ^^^^^^^^
> >
> > AFAICT, this shouldn't run on Intel hw. Can you send your .config.
>
> /proc/config.gz is attached. Please note, that it's an -rt kernel.
I know.
But I don't see anything that sticks out in your .config.
So the stack trace, since it shows that the init_amd address is
unreliable, could be red herring...
Any chance you could try a non-rt kernel, possibly latest linus from
git.kernel.org to rule out an -rt issue?
Also, looks like your cpu can do 64-bit. Can you try a 64-bit kernel?
Also, what is the exact command line you're running with chcpu?
Thanks.
--
Regards/Gruss,
Boris.
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: BUG: scheduling while atomic: chcpu/6197/0x00000002
2012-06-28 6:42 ` Borislav Petkov
@ 2012-06-28 9:24 ` Thomas Sattler
2012-06-28 10:21 ` Borislav Petkov
0 siblings, 1 reply; 15+ messages in thread
From: Thomas Sattler @ 2012-06-28 9:24 UTC (permalink / raw)
To: Borislav Petkov, Linux Kernel Mailing List, Ingo Molnar, Thomas Gleixner
> Any chance you could try a non-rt kernel,
Earlier in this thread I wrote, that 3.4.[23] are
in fact unaffected. Only 3.4.[234]-rt1[0123] show
this BUG in dmesg.
> to rule out an -rt issue?
Steven Rostedt wrote (w/o CC:LKML) that he believes
CPU hotplug is still an issue with -rt. So, are you
still interested to follow the "amd on intel" thing?
> Also, looks like your cpu can do 64-bit. Can you
> try a 64-bit kernel?
Yes, it's a 32-bit userland on 64-bit hardware. So
far I didn't compile 64-bit kernels on 32-bit user-
land but in case you're still interested in the
result, I'll give it a try.
> Also, what is the exact command line you're running
> with chcpu?
# chcpu --disable 1
Thomas
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: BUG: scheduling while atomic: chcpu/6197/0x00000002
2012-06-28 9:24 ` Thomas Sattler
@ 2012-06-28 10:21 ` Borislav Petkov
0 siblings, 0 replies; 15+ messages in thread
From: Borislav Petkov @ 2012-06-28 10:21 UTC (permalink / raw)
To: Thomas Sattler
Cc: Linux Kernel Mailing List, Ingo Molnar, Thomas Gleixner, Steven Rostedt
On Thu, Jun 28, 2012 at 11:24:56AM +0200, Thomas Sattler wrote:
> > Any chance you could try a non-rt kernel,
>
> Earlier in this thread I wrote, that 3.4.[23] are
> in fact unaffected. Only 3.4.[234]-rt1[0123] show
> this BUG in dmesg.
>
> > to rule out an -rt issue?
>
> Steven Rostedt wrote (w/o CC:LKML) that he believes
> CPU hotplug is still an issue with -rt. So, are you
> still interested to follow the "amd on intel" thing?
I don't think it is an "amd on intel" issue - it is probably the
stack trace dumping code wrongly finding the init_amd symbol due to
CPU_SUP_AMD bring compiled in or so...
Rather, it looks like the issue is what Steve said.
> > Also, looks like your cpu can do 64-bit. Can you
> > try a 64-bit kernel?
>
> Yes, it's a 32-bit userland on 64-bit hardware. So
> far I didn't compile 64-bit kernels on 32-bit user-
> land but in case you're still interested in the
> result, I'll give it a try.
Well, if you have a 64-bit cpu, you could consider running a 64-bit
kernel for many reasons. The most important one being that 64-bit code
is enjoying orders of magnitude more testing because the world has moved
to 64-bit already. -rt included.
--
Regards/Gruss,
Boris.
^ permalink raw reply [flat|nested] 15+ messages in thread
end of thread, other threads:[~2012-06-28 10:21 UTC | newest]
Thread overview: 15+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-06-18 10:19 BUG: scheduling while atomic: chcpu/6197/0x00000002 Thomas Sattler
2012-06-18 12:33 ` Thomas Sattler
2012-06-20 9:15 ` Thomas Sattler
2012-06-25 12:58 ` Thomas Sattler
2012-06-27 11:41 ` Thomas Sattler
2012-06-27 12:26 ` Fwd: " richard -rw- weinberger
2012-06-27 12:37 ` Steven Rostedt
2012-06-27 13:32 ` Thomas Sattler
2012-06-27 14:01 ` Tim Sally
2012-06-27 14:21 ` Steven Rostedt
2012-06-27 17:46 ` Borislav Petkov
2012-06-28 5:58 ` Thomas Sattler
2012-06-28 6:42 ` Borislav Petkov
2012-06-28 9:24 ` Thomas Sattler
2012-06-28 10:21 ` Borislav Petkov
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