Bug 14150
| Summary: | BUG: soft lockup - CPU#3 stuck for 61s!, while running cpu controller latency testcase on two containers parallaly | ||
|---|---|---|---|
| Product: | Process Management | Reporter: | Rishikesh (risrajak) |
| Component: | Scheduler | Assignee: | Ingo Molnar (mingo) |
| Status: | CLOSED CODE_FIX | ||
| Severity: | high | CC: | alan, iranna.ankad, risrajak, serue |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 2.6.31-rc7 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: | Config-file-used | ||
|
Description
Rishikesh
2009-09-10 09:32:10 UTC
(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Thu, 10 Sep 2009 09:32:30 GMT bugzilla-daemon@bugzilla.kernel.org wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=14150 > > Summary: BUG: soft lockup - CPU#3 stuck for 61s!, while running > cpu controller latency testcase on two containers > parallaly > Product: Process Management > Version: 2.5 > Kernel Version: 2.6.31-rc7 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: high > Priority: P1 > Component: Scheduler > AssignedTo: mingo@elte.hu > ReportedBy: risrajak@linux.vnet.ibm.com > CC: serue@us.ibm.com, iranna.ankad@in.ibm.com, > risrajak@in.ibm.com > Regression: No > > > Created an attachment (id=23055) > --> (http://bugzilla.kernel.org/attachment.cgi?id=23055) > Config-file-used > > Hitting this soft lock issue while running this scenario on 2.6.31-rc7 kernel > on SystemX 32 bit on multiple machines. > > Scenario: > - While running cpu controller latency testcase from LTP same time on two > containers. > > Steps: > 1. Compile ltp-full-20090731.tgz on host. > 2. Create two container (Used lxc tool > (http://sourceforge.net/projects/lxc/lxc-0.6.3.tar.gz) for creating container > ) > e.g: > lxc-create -n foo1 > lxc-create -n foo2 > On first shell: > lxc-execute -n foo1 -f /usr/etc/lxc/lxc-macvlan.conf /bin/bash > on Second shell: > lxc-execute -n foo2 -f /usr/etc/lxc/lxc-macvlan.conf /bin/bash > > 3. Either you run cpu_latency testcase alone or run "./runltp -f controllers" > at same time on both the containers. > 4. After testcase execution completes, you can see this message in dmesg. > > Expected Result: > - Should not reproduce soft lock up issue. > - This reproduces 3 times out of 5 tries. > > hrtimer: interrupt too slow, forcing clock min delta to 5843235 ns > hrtimer: interrupt too slow, forcing clock min delta to 5842476 ns > Clocksource tsc unstable (delta = 18749057581 ns) > BUG: soft lockup - CPU#3 stuck for 61s! [cpuctl_latency_:17174] > Modules linked in: bridge stp llc bnep sco l2cap bluetooth sunrpc ipv6 > p4_clockmod dm_multipath uinput qla2xxx ata_generic pata_acpi usb_storage > e1000 > scsi_transport_fc joydev scsi_tgt i2c_piix4 pata_serverworks pcspkr serio_raw > mptspi mptscsih mptbase scsi_transport_spi radeon ttm drm i2c_algo_bit > i2c_core > [last unloaded: scsi_wait_scan] > > Pid: 17174, comm: cpuctl_latency_ Tainted: G W (2.6.31-rc7 #1) IBM > eServer BladeCenter HS40 -[883961X]- > EIP: 0060:[<c058aded>] EFLAGS: 00000283 CPU: 3 > EIP is at find_next_bit+0x9/0x79 > EAX: c2c437a0 EBX: f3d433c0 ECX: 00000000 EDX: 00000020 > ESI: c2c436bc EDI: 00000000 EBP: f063be6c ESP: f063be64 > DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 > CR0: 80050033 CR2: 008765a4 CR3: 314d7000 CR4: 000006d0 > DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 > DR6: ffff0ff0 DR7: 00000400 > Call Trace: > [<c0427b6e>] cpumask_next+0x17/0x19 > [<c042c28d>] tg_shares_up+0x53/0x149 > [<c0424082>] ? tg_nop+0x0/0xc > [<c0424082>] ? tg_nop+0x0/0xc > [<c042406e>] walk_tg_tree+0x63/0x77 > [<c042c23a>] ? tg_shares_up+0x0/0x149 > [<c042e836>] update_shares+0x5d/0x65 > [<c0432af3>] rebalance_domains+0x114/0x460 > [<c0403393>] ? restore_all_notrace+0x0/0x18 > [<c0432e75>] run_rebalance_domains+0x36/0xa3 > [<c043c324>] __do_softirq+0xbc/0x173 > [<c043c416>] do_softirq+0x3b/0x5f > [<c043c52d>] irq_exit+0x3a/0x68 > [<c0417846>] smp_apic_timer_interrupt+0x6d/0x7b > [<c0403c9b>] apic_timer_interrupt+0x2f/0x34 > BUG: soft lockup - CPU#2 stuck for 61s! [watchdog/2:11] > Modules linked in: bridge stp llc bnep sco l2cap bluetooth sunrpc ipv6 > p4_clockmod dm_multipath uinput qla2xxx ata_generic pata_acpi usb_storage > e1000 > scsi_transport_fc joydev scsi_tgt i2c_piix4 pata_serverworks pcspkr serio_raw > mptspi mptscsih mptbase scsi_transport_spi radeon ttm drm i2c_algo_bit > i2c_core > [last unloaded: scsi_wait_scan] > > Pid: 11, comm: watchdog/2 Tainted: G W (2.6.31-rc7 #1) IBM eServer > BladeCenter HS40 -[883961X]- > EIP: 0060:[<c042c313>] EFLAGS: 00000246 CPU: 2 > EIP is at tg_shares_up+0xd9/0x149 > EAX: 00000000 EBX: f09b3c00 ECX: f0baac00 EDX: 00000100 > ESI: 00000002 EDI: 00000400 EBP: f6cb7de0 ESP: f6cb7db8 > DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 > CR0: 8005003b CR2: 08070680 CR3: 009c8000 CR4: 000006d0 > DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 > DR6: ffff0ff0 DR7: 00000400 > Call Trace: > [<c0424082>] ? tg_nop+0x0/0xc > [<c0424082>] ? tg_nop+0x0/0xc > [<c042406e>] walk_tg_tree+0x63/0x77 > [<c042c23a>] ? tg_shares_up+0x0/0x149 > [<c042e836>] update_shares+0x5d/0x65 > [<c0432af3>] rebalance_domains+0x114/0x460 > [<c0432e75>] run_rebalance_domains+0x36/0xa3 > [<c043c324>] __do_softirq+0xbc/0x173 > [<c043c416>] do_softirq+0x3b/0x5f > [<c043c52d>] irq_exit+0x3a/0x68 > [<c0417846>] smp_apic_timer_interrupt+0x6d/0x7b > [<c0403c9b>] apic_timer_interrupt+0x2f/0x34 > [<c0430d37>] ? finish_task_switch+0x5d/0xc4 > [<c0744b11>] schedule+0x74c/0x7b2 > [<c0590e28>] ? trace_hardirqs_on_thunk+0xc/0x10 > [<c0403393>] ? restore_all_notrace+0x0/0x18 > [<c0471e19>] ? watchdog+0x0/0x79 > [<c0471e19>] ? watchdog+0x0/0x79 > [<c0471e63>] watchdog+0x4a/0x79 > [<c0449a53>] kthread+0x70/0x75 > [<c04499e3>] ? kthread+0x0/0x75 > [<c0403e93>] kernel_thread_helper+0x7/0x10 > [root@hs40 ltp-full-20090731]# uname -a > Linux hs40.in.ibm.com 2.6.31-rc7 #1 SMP Thu Sep 3 10:14:41 IST 2009 i686 i686 > i386 GNU/Linux > [root@hs40 ltp-full-20090731]# > On Fri, Sep 11, 2009 at 02:28:13PM -0700, Andrew Morton wrote:
>
> (switched to email. Please respond via emailed reply-to-all, not via the
> bugzilla web interface).
>
> On Thu, 10 Sep 2009 09:32:30 GMT
> bugzilla-daemon@bugzilla.kernel.org wrote:
>
> > http://bugzilla.kernel.org/show_bug.cgi?id=14150
> >
> > Summary: BUG: soft lockup - CPU#3 stuck for 61s!, while running
> > cpu controller latency testcase on two containers
> > parallaly
> > Product: Process Management
> > Version: 2.5
> > Kernel Version: 2.6.31-rc7
> > Platform: All
> > OS/Version: Linux
> > Tree: Mainline
> > Status: NEW
> > Severity: high
> > Priority: P1
> > Component: Scheduler
> > AssignedTo: mingo@elte.hu
> > ReportedBy: risrajak@linux.vnet.ibm.com
> > CC: serue@us.ibm.com, iranna.ankad@in.ibm.com,
> > risrajak@in.ibm.com
> > Regression: No
> >
> >
> > Created an attachment (id=23055)
> > --> (http://bugzilla.kernel.org/attachment.cgi?id=23055)
> > Config-file-used
> >
> > Hitting this soft lock issue while running this scenario on 2.6.31-rc7
> kernel
> > on SystemX 32 bit on multiple machines.
> >
> > Scenario:
> > - While running cpu controller latency testcase from LTP same time on
> two
> > containers.
> >
> > Steps:
> > 1. Compile ltp-full-20090731.tgz on host.
> > 2. Create two container (Used lxc tool
> > (http://sourceforge.net/projects/lxc/lxc-0.6.3.tar.gz) for creating
> container )
> > e.g:
> > lxc-create -n foo1
> > lxc-create -n foo2
> > On first shell:
> > lxc-execute -n foo1 -f /usr/etc/lxc/lxc-macvlan.conf /bin/bash
> > on Second shell:
> > lxc-execute -n foo2 -f /usr/etc/lxc/lxc-macvlan.conf /bin/bash
> >
> > 3. Either you run cpu_latency testcase alone or run "./runltp -f
> controllers"
> > at same time on both the containers.
> > 4. After testcase execution completes, you can see this message in dmesg.
> >
> > Expected Result:
> > - Should not reproduce soft lock up issue.
> > - This reproduces 3 times out of 5 tries.
> >
> > hrtimer: interrupt too slow, forcing clock min delta to 5843235 ns
> > hrtimer: interrupt too slow, forcing clock min delta to 5842476 ns
> > Clocksource tsc unstable (delta = 18749057581 ns)
> > BUG: soft lockup - CPU#3 stuck for 61s! [cpuctl_latency_:17174]
> > Modules linked in: bridge stp llc bnep sco l2cap bluetooth sunrpc ipv6
> > p4_clockmod dm_multipath uinput qla2xxx ata_generic pata_acpi usb_storage
> e1000
> > scsi_transport_fc joydev scsi_tgt i2c_piix4 pata_serverworks pcspkr
> serio_raw
> > mptspi mptscsih mptbase scsi_transport_spi radeon ttm drm i2c_algo_bit
> i2c_core
> > [last unloaded: scsi_wait_scan]
> >
> > Pid: 17174, comm: cpuctl_latency_ Tainted: G W (2.6.31-rc7 #1) IBM
> > eServer BladeCenter HS40 -[883961X]-
> > EIP: 0060:[<c058aded>] EFLAGS: 00000283 CPU: 3
> > EIP is at find_next_bit+0x9/0x79
> > EAX: c2c437a0 EBX: f3d433c0 ECX: 00000000 EDX: 00000020
> > ESI: c2c436bc EDI: 00000000 EBP: f063be6c ESP: f063be64
> > DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
> > CR0: 80050033 CR2: 008765a4 CR3: 314d7000 CR4: 000006d0
> > DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
> > DR6: ffff0ff0 DR7: 00000400
> > Call Trace:
> > [<c0427b6e>] cpumask_next+0x17/0x19
> > [<c042c28d>] tg_shares_up+0x53/0x149
> > [<c0424082>] ? tg_nop+0x0/0xc
> > [<c0424082>] ? tg_nop+0x0/0xc
> > [<c042406e>] walk_tg_tree+0x63/0x77
> > [<c042c23a>] ? tg_shares_up+0x0/0x149
> > [<c042e836>] update_shares+0x5d/0x65
> > [<c0432af3>] rebalance_domains+0x114/0x460
> > [<c0403393>] ? restore_all_notrace+0x0/0x18
> > [<c0432e75>] run_rebalance_domains+0x36/0xa3
> > [<c043c324>] __do_softirq+0xbc/0x173
> > [<c043c416>] do_softirq+0x3b/0x5f
> > [<c043c52d>] irq_exit+0x3a/0x68
> > [<c0417846>] smp_apic_timer_interrupt+0x6d/0x7b
> > [<c0403c9b>] apic_timer_interrupt+0x2f/0x34
> > BUG: soft lockup - CPU#2 stuck for 61s! [watchdog/2:11]
> > Modules linked in: bridge stp llc bnep sco l2cap bluetooth sunrpc ipv6
> > p4_clockmod dm_multipath uinput qla2xxx ata_generic pata_acpi usb_storage
> e1000
> > scsi_transport_fc joydev scsi_tgt i2c_piix4 pata_serverworks pcspkr
> serio_raw
> > mptspi mptscsih mptbase scsi_transport_spi radeon ttm drm i2c_algo_bit
> i2c_core
> > [last unloaded: scsi_wait_scan]
> >
> > Pid: 11, comm: watchdog/2 Tainted: G W (2.6.31-rc7 #1) IBM eServer
> > BladeCenter HS40 -[883961X]-
> > EIP: 0060:[<c042c313>] EFLAGS: 00000246 CPU: 2
> > EIP is at tg_shares_up+0xd9/0x149
> > EAX: 00000000 EBX: f09b3c00 ECX: f0baac00 EDX: 00000100
> > ESI: 00000002 EDI: 00000400 EBP: f6cb7de0 ESP: f6cb7db8
> > DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
> > CR0: 8005003b CR2: 08070680 CR3: 009c8000 CR4: 000006d0
> > DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
> > DR6: ffff0ff0 DR7: 00000400
> > Call Trace:
> > [<c0424082>] ? tg_nop+0x0/0xc
> > [<c0424082>] ? tg_nop+0x0/0xc
> > [<c042406e>] walk_tg_tree+0x63/0x77
> > [<c042c23a>] ? tg_shares_up+0x0/0x149
> > [<c042e836>] update_shares+0x5d/0x65
> > [<c0432af3>] rebalance_domains+0x114/0x460
> > [<c0432e75>] run_rebalance_domains+0x36/0xa3
> > [<c043c324>] __do_softirq+0xbc/0x173
> > [<c043c416>] do_softirq+0x3b/0x5f
> > [<c043c52d>] irq_exit+0x3a/0x68
> > [<c0417846>] smp_apic_timer_interrupt+0x6d/0x7b
> > [<c0403c9b>] apic_timer_interrupt+0x2f/0x34
> > [<c0430d37>] ? finish_task_switch+0x5d/0xc4
> > [<c0744b11>] schedule+0x74c/0x7b2
> > [<c0590e28>] ? trace_hardirqs_on_thunk+0xc/0x10
> > [<c0403393>] ? restore_all_notrace+0x0/0x18
> > [<c0471e19>] ? watchdog+0x0/0x79
> > [<c0471e19>] ? watchdog+0x0/0x79
> > [<c0471e63>] watchdog+0x4a/0x79
> > [<c0449a53>] kthread+0x70/0x75
> > [<c04499e3>] ? kthread+0x0/0x75
> > [<c0403e93>] kernel_thread_helper+0x7/0x10
> > [root@hs40 ltp-full-20090731]# uname -a
> > Linux hs40.in.ibm.com 2.6.31-rc7 #1 SMP Thu Sep 3 10:14:41 IST 2009 i686
> i686
> > i386 GNU/Linux
> > [root@hs40 ltp-full-20090731]#
> >
>
We have been unable to reproduce it on current -tip. Rishi, are you able
to reproduce it on -tip?
thanks,
Dhaval, Can you please boot your system with attached config file ? i am unable to boot -tip kernel on my system with attached config file. If you are able to boot then we can track down the problem easily. Dhaval Giani wrote: > On Fri, Sep 11, 2009 at 02:28:13PM -0700, Andrew Morton wrote: > >> (switched to email. Please respond via emailed reply-to-all, not via the >> bugzilla web interface). >> >> On Thu, 10 Sep 2009 09:32:30 GMT >> bugzilla-daemon@bugzilla.kernel.org wrote: >> >> >>> http://bugzilla.kernel.org/show_bug.cgi?id=14150 >>> >>> Summary: BUG: soft lockup - CPU#3 stuck for 61s!, while running >>> cpu controller latency testcase on two containers >>> parallaly >>> Product: Process Management >>> Version: 2.5 >>> Kernel Version: 2.6.31-rc7 >>> Platform: All >>> OS/Version: Linux >>> Tree: Mainline >>> Status: NEW >>> Severity: high >>> Priority: P1 >>> Component: Scheduler >>> AssignedTo: mingo@elte.hu >>> ReportedBy: risrajak@linux.vnet.ibm.com >>> CC: serue@us.ibm.com, iranna.ankad@in.ibm.com, >>> risrajak@in.ibm.com >>> Regression: No >>> >>> >>> Created an attachment (id=23055) >>> --> (http://bugzilla.kernel.org/attachment.cgi?id=23055) >>> Config-file-used >>> >>> Hitting this soft lock issue while running this scenario on 2.6.31-rc7 >>> kernel >>> on SystemX 32 bit on multiple machines. >>> >>> Scenario: >>> - While running cpu controller latency testcase from LTP same time on >>> two >>> containers. >>> >>> Steps: >>> 1. Compile ltp-full-20090731.tgz on host. >>> 2. Create two container (Used lxc tool >>> (http://sourceforge.net/projects/lxc/lxc-0.6.3.tar.gz) for creating >>> container ) >>> e.g: >>> lxc-create -n foo1 >>> lxc-create -n foo2 >>> On first shell: >>> lxc-execute -n foo1 -f /usr/etc/lxc/lxc-macvlan.conf /bin/bash >>> on Second shell: >>> lxc-execute -n foo2 -f /usr/etc/lxc/lxc-macvlan.conf /bin/bash >>> >>> 3. Either you run cpu_latency testcase alone or run "./runltp -f >>> controllers" >>> at same time on both the containers. >>> 4. After testcase execution completes, you can see this message in dmesg. >>> >>> Expected Result: >>> - Should not reproduce soft lock up issue. >>> - This reproduces 3 times out of 5 tries. >>> >>> hrtimer: interrupt too slow, forcing clock min delta to 5843235 ns >>> hrtimer: interrupt too slow, forcing clock min delta to 5842476 ns >>> Clocksource tsc unstable (delta = 18749057581 ns) >>> BUG: soft lockup - CPU#3 stuck for 61s! [cpuctl_latency_:17174] >>> Modules linked in: bridge stp llc bnep sco l2cap bluetooth sunrpc ipv6 >>> p4_clockmod dm_multipath uinput qla2xxx ata_generic pata_acpi usb_storage >>> e1000 >>> scsi_transport_fc joydev scsi_tgt i2c_piix4 pata_serverworks pcspkr >>> serio_raw >>> mptspi mptscsih mptbase scsi_transport_spi radeon ttm drm i2c_algo_bit >>> i2c_core >>> [last unloaded: scsi_wait_scan] >>> >>> Pid: 17174, comm: cpuctl_latency_ Tainted: G W (2.6.31-rc7 #1) IBM >>> eServer BladeCenter HS40 -[883961X]- >>> EIP: 0060:[<c058aded>] EFLAGS: 00000283 CPU: 3 >>> EIP is at find_next_bit+0x9/0x79 >>> EAX: c2c437a0 EBX: f3d433c0 ECX: 00000000 EDX: 00000020 >>> ESI: c2c436bc EDI: 00000000 EBP: f063be6c ESP: f063be64 >>> DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 >>> CR0: 80050033 CR2: 008765a4 CR3: 314d7000 CR4: 000006d0 >>> DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 >>> DR6: ffff0ff0 DR7: 00000400 >>> Call Trace: >>> [<c0427b6e>] cpumask_next+0x17/0x19 >>> [<c042c28d>] tg_shares_up+0x53/0x149 >>> [<c0424082>] ? tg_nop+0x0/0xc >>> [<c0424082>] ? tg_nop+0x0/0xc >>> [<c042406e>] walk_tg_tree+0x63/0x77 >>> [<c042c23a>] ? tg_shares_up+0x0/0x149 >>> [<c042e836>] update_shares+0x5d/0x65 >>> [<c0432af3>] rebalance_domains+0x114/0x460 >>> [<c0403393>] ? restore_all_notrace+0x0/0x18 >>> [<c0432e75>] run_rebalance_domains+0x36/0xa3 >>> [<c043c324>] __do_softirq+0xbc/0x173 >>> [<c043c416>] do_softirq+0x3b/0x5f >>> [<c043c52d>] irq_exit+0x3a/0x68 >>> [<c0417846>] smp_apic_timer_interrupt+0x6d/0x7b >>> [<c0403c9b>] apic_timer_interrupt+0x2f/0x34 >>> BUG: soft lockup - CPU#2 stuck for 61s! [watchdog/2:11] >>> Modules linked in: bridge stp llc bnep sco l2cap bluetooth sunrpc ipv6 >>> p4_clockmod dm_multipath uinput qla2xxx ata_generic pata_acpi usb_storage >>> e1000 >>> scsi_transport_fc joydev scsi_tgt i2c_piix4 pata_serverworks pcspkr >>> serio_raw >>> mptspi mptscsih mptbase scsi_transport_spi radeon ttm drm i2c_algo_bit >>> i2c_core >>> [last unloaded: scsi_wait_scan] >>> >>> Pid: 11, comm: watchdog/2 Tainted: G W (2.6.31-rc7 #1) IBM eServer >>> BladeCenter HS40 -[883961X]- >>> EIP: 0060:[<c042c313>] EFLAGS: 00000246 CPU: 2 >>> EIP is at tg_shares_up+0xd9/0x149 >>> EAX: 00000000 EBX: f09b3c00 ECX: f0baac00 EDX: 00000100 >>> ESI: 00000002 EDI: 00000400 EBP: f6cb7de0 ESP: f6cb7db8 >>> DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 >>> CR0: 8005003b CR2: 08070680 CR3: 009c8000 CR4: 000006d0 >>> DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 >>> DR6: ffff0ff0 DR7: 00000400 >>> Call Trace: >>> [<c0424082>] ? tg_nop+0x0/0xc >>> [<c0424082>] ? tg_nop+0x0/0xc >>> [<c042406e>] walk_tg_tree+0x63/0x77 >>> [<c042c23a>] ? tg_shares_up+0x0/0x149 >>> [<c042e836>] update_shares+0x5d/0x65 >>> [<c0432af3>] rebalance_domains+0x114/0x460 >>> [<c0432e75>] run_rebalance_domains+0x36/0xa3 >>> [<c043c324>] __do_softirq+0xbc/0x173 >>> [<c043c416>] do_softirq+0x3b/0x5f >>> [<c043c52d>] irq_exit+0x3a/0x68 >>> [<c0417846>] smp_apic_timer_interrupt+0x6d/0x7b >>> [<c0403c9b>] apic_timer_interrupt+0x2f/0x34 >>> [<c0430d37>] ? finish_task_switch+0x5d/0xc4 >>> [<c0744b11>] schedule+0x74c/0x7b2 >>> [<c0590e28>] ? trace_hardirqs_on_thunk+0xc/0x10 >>> [<c0403393>] ? restore_all_notrace+0x0/0x18 >>> [<c0471e19>] ? watchdog+0x0/0x79 >>> [<c0471e19>] ? watchdog+0x0/0x79 >>> [<c0471e63>] watchdog+0x4a/0x79 >>> [<c0449a53>] kthread+0x70/0x75 >>> [<c04499e3>] ? kthread+0x0/0x75 >>> [<c0403e93>] kernel_thread_helper+0x7/0x10 >>> [root@hs40 ltp-full-20090731]# uname -a >>> Linux hs40.in.ibm.com 2.6.31-rc7 #1 SMP Thu Sep 3 10:14:41 IST 2009 i686 >>> i686 >>> i386 GNU/Linux >>> [root@hs40 ltp-full-20090731]# >>> >>> > > We have been unable to reproduce it on current -tip. Rishi, are you able > to reproduce it on -tip? > > thanks, > I am not able to create container with lxc on -tip kernel with config file attached. As soon as i am executing "lxc-execute ..." it hangs and only way to recover is to hard reboot system. I am not sure about tip but i am able to create the problem pretty easily on 2.6.31-rc7 with that config file. Only the changes i have done in the config file from (2.6.31-rc7) is : - Disabled KVM as it was giving me error on -tip kernel. - Applied following patch : http://www.gossamer-threads.com/lists/linux/kernel/1129527 Please let me know if you are able to recreate it on -tip with following config. Rishikesh wrote: > Dhaval Giani wrote: >> On Fri, Sep 11, 2009 at 02:28:13PM -0700, Andrew Morton wrote: >> >>> (switched to email. Please respond via emailed reply-to-all, not >>> via the >>> bugzilla web interface). >>> >>> On Thu, 10 Sep 2009 09:32:30 GMT >>> bugzilla-daemon@bugzilla.kernel.org wrote: >>> >>> >>>> http://bugzilla.kernel.org/show_bug.cgi?id=14150 >>>> >>>> Summary: BUG: soft lockup - CPU#3 stuck for 61s!, while >>>> running >>>> cpu controller latency testcase on two containers >>>> parallaly >>>> Product: Process Management >>>> Version: 2.5 >>>> Kernel Version: 2.6.31-rc7 >>>> Platform: All >>>> OS/Version: Linux >>>> Tree: Mainline >>>> Status: NEW >>>> Severity: high >>>> Priority: P1 >>>> Component: Scheduler >>>> AssignedTo: mingo@elte.hu >>>> ReportedBy: risrajak@linux.vnet.ibm.com >>>> CC: serue@us.ibm.com, iranna.ankad@in.ibm.com, >>>> risrajak@in.ibm.com >>>> Regression: No >>>> >>>> >>>> Created an attachment (id=23055) >>>> --> (http://bugzilla.kernel.org/attachment.cgi?id=23055) >>>> Config-file-used >>>> >>>> Hitting this soft lock issue while running this scenario on >>>> 2.6.31-rc7 kernel >>>> on SystemX 32 bit on multiple machines. >>>> >>>> Scenario: >>>> - While running cpu controller latency testcase from LTP same >>>> time on two >>>> containers. >>>> >>>> Steps: >>>> 1. Compile ltp-full-20090731.tgz on host. >>>> 2. Create two container (Used lxc tool >>>> (http://sourceforge.net/projects/lxc/lxc-0.6.3.tar.gz) for creating >>>> container ) >>>> e.g: >>>> lxc-create -n foo1 >>>> lxc-create -n foo2 >>>> On first shell: >>>> lxc-execute -n foo1 -f /usr/etc/lxc/lxc-macvlan.conf /bin/bash >>>> on Second shell: >>>> lxc-execute -n foo2 -f /usr/etc/lxc/lxc-macvlan.conf /bin/bash >>>> >>>> 3. Either you run cpu_latency testcase alone or run "./runltp -f >>>> controllers" >>>> at same time on both the containers. >>>> 4. After testcase execution completes, you can see this message in >>>> dmesg. >>>> >>>> Expected Result: >>>> - Should not reproduce soft lock up issue. >>>> - This reproduces 3 times out of 5 tries. >>>> >>>> hrtimer: interrupt too slow, forcing clock min delta to 5843235 ns >>>> hrtimer: interrupt too slow, forcing clock min delta to 5842476 ns >>>> Clocksource tsc unstable (delta = 18749057581 ns) >>>> BUG: soft lockup - CPU#3 stuck for 61s! [cpuctl_latency_:17174] >>>> Modules linked in: bridge stp llc bnep sco l2cap bluetooth sunrpc ipv6 >>>> p4_clockmod dm_multipath uinput qla2xxx ata_generic pata_acpi >>>> usb_storage e1000 >>>> scsi_transport_fc joydev scsi_tgt i2c_piix4 pata_serverworks pcspkr >>>> serio_raw >>>> mptspi mptscsih mptbase scsi_transport_spi radeon ttm drm >>>> i2c_algo_bit i2c_core >>>> [last unloaded: scsi_wait_scan] >>>> >>>> Pid: 17174, comm: cpuctl_latency_ Tainted: G W (2.6.31-rc7 >>>> #1) IBM >>>> eServer BladeCenter HS40 -[883961X]- EIP: >>>> 0060:[<c058aded>] EFLAGS: 00000283 CPU: 3 >>>> EIP is at find_next_bit+0x9/0x79 >>>> EAX: c2c437a0 EBX: f3d433c0 ECX: 00000000 EDX: 00000020 >>>> ESI: c2c436bc EDI: 00000000 EBP: f063be6c ESP: f063be64 >>>> DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 >>>> CR0: 80050033 CR2: 008765a4 CR3: 314d7000 CR4: 000006d0 >>>> DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 >>>> DR6: ffff0ff0 DR7: 00000400 >>>> Call Trace: >>>> [<c0427b6e>] cpumask_next+0x17/0x19 >>>> [<c042c28d>] tg_shares_up+0x53/0x149 >>>> [<c0424082>] ? tg_nop+0x0/0xc >>>> [<c0424082>] ? tg_nop+0x0/0xc >>>> [<c042406e>] walk_tg_tree+0x63/0x77 >>>> [<c042c23a>] ? tg_shares_up+0x0/0x149 >>>> [<c042e836>] update_shares+0x5d/0x65 >>>> [<c0432af3>] rebalance_domains+0x114/0x460 >>>> [<c0403393>] ? restore_all_notrace+0x0/0x18 >>>> [<c0432e75>] run_rebalance_domains+0x36/0xa3 >>>> [<c043c324>] __do_softirq+0xbc/0x173 >>>> [<c043c416>] do_softirq+0x3b/0x5f >>>> [<c043c52d>] irq_exit+0x3a/0x68 >>>> [<c0417846>] smp_apic_timer_interrupt+0x6d/0x7b >>>> [<c0403c9b>] apic_timer_interrupt+0x2f/0x34 >>>> BUG: soft lockup - CPU#2 stuck for 61s! [watchdog/2:11] >>>> Modules linked in: bridge stp llc bnep sco l2cap bluetooth sunrpc ipv6 >>>> p4_clockmod dm_multipath uinput qla2xxx ata_generic pata_acpi >>>> usb_storage e1000 >>>> scsi_transport_fc joydev scsi_tgt i2c_piix4 pata_serverworks pcspkr >>>> serio_raw >>>> mptspi mptscsih mptbase scsi_transport_spi radeon ttm drm >>>> i2c_algo_bit i2c_core >>>> [last unloaded: scsi_wait_scan] >>>> >>>> Pid: 11, comm: watchdog/2 Tainted: G W (2.6.31-rc7 #1) IBM >>>> eServer >>>> BladeCenter HS40 -[883961X]- EIP: >>>> 0060:[<c042c313>] EFLAGS: 00000246 CPU: 2 >>>> EIP is at tg_shares_up+0xd9/0x149 >>>> EAX: 00000000 EBX: f09b3c00 ECX: f0baac00 EDX: 00000100 >>>> ESI: 00000002 EDI: 00000400 EBP: f6cb7de0 ESP: f6cb7db8 >>>> DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 >>>> CR0: 8005003b CR2: 08070680 CR3: 009c8000 CR4: 000006d0 >>>> DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 >>>> DR6: ffff0ff0 DR7: 00000400 >>>> Call Trace: >>>> [<c0424082>] ? tg_nop+0x0/0xc >>>> [<c0424082>] ? tg_nop+0x0/0xc >>>> [<c042406e>] walk_tg_tree+0x63/0x77 >>>> [<c042c23a>] ? tg_shares_up+0x0/0x149 >>>> [<c042e836>] update_shares+0x5d/0x65 >>>> [<c0432af3>] rebalance_domains+0x114/0x460 >>>> [<c0432e75>] run_rebalance_domains+0x36/0xa3 >>>> [<c043c324>] __do_softirq+0xbc/0x173 >>>> [<c043c416>] do_softirq+0x3b/0x5f >>>> [<c043c52d>] irq_exit+0x3a/0x68 >>>> [<c0417846>] smp_apic_timer_interrupt+0x6d/0x7b >>>> [<c0403c9b>] apic_timer_interrupt+0x2f/0x34 >>>> [<c0430d37>] ? finish_task_switch+0x5d/0xc4 >>>> [<c0744b11>] schedule+0x74c/0x7b2 >>>> [<c0590e28>] ? trace_hardirqs_on_thunk+0xc/0x10 >>>> [<c0403393>] ? restore_all_notrace+0x0/0x18 >>>> [<c0471e19>] ? watchdog+0x0/0x79 >>>> [<c0471e19>] ? watchdog+0x0/0x79 >>>> [<c0471e63>] watchdog+0x4a/0x79 >>>> [<c0449a53>] kthread+0x70/0x75 >>>> [<c04499e3>] ? kthread+0x0/0x75 >>>> [<c0403e93>] kernel_thread_helper+0x7/0x10 >>>> [root@hs40 ltp-full-20090731]# uname -a >>>> Linux hs40.in.ibm.com 2.6.31-rc7 #1 SMP Thu Sep 3 10:14:41 IST 2009 >>>> i686 i686 >>>> i386 GNU/Linux >>>> [root@hs40 ltp-full-20090731]# >>>> >>>> >> >> We have been unable to reproduce it on current -tip. Rishi, are you able >> to reproduce it on -tip? >> >> thanks, >> > I am not able to create container with lxc on -tip kernel with config > file attached. As soon as i am executing "lxc-execute ..." it hangs > and only way to recover is to hard reboot system. enabled the nmi_watchdog on tip kernel and found this call trace on system while executing "lxc-execute ..." command ( creating container). x335a.in.ibm.com login: BUG: NMI Watchdog detected LOCKUP on CPU1, ip c075f208, registers: Modules linked in: nfs lockd nfs_acl auth_rpcgss bridge stp llc bnep sco l2cap bluetooth autofs4 sunrpc ipv6 p4_clockmod dm_multipath uinput ata_generic pata_acpi pata_serverworks i2c_piix4 floppy tg3 i2c_core pcspkr serio_raw mptspi mptscsih mptbase scsi_transport_spi [last unloaded: scsi_wait_scan] Pid: 0, comm: swapper Not tainted (2.6.31-tip #2) eserver xSeries 335 -[867641X]- EIP: 0060:[<c075f208>] EFLAGS: 00000097 CPU: 1 EIP is at _spin_lock_irqsave+0x2b/0x39 EAX: 00002625 EBX: c3128e00 ECX: 00000000 EDX: 00000200 ESI: 00000086 EDI: 00000400 EBP: f70a9d58 ESP: f70a9d50 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 Process swapper (pid: 0, ti=f70a8000 task=f7086780 task.ti=f70a8000) Stack: f6461a80 00000001 f70a9d94 c043335a 00000200 00000400 c31243d8 c3124350 <0> c31244c0 c3128e00 c09f3e00 00000086 00000001 00000800 f6461a80 c31243d8 <0> c042c0d4 f70a9dac c042c0c0 c0433226 c31243d8 000b71b0 00000000 f70a9dd0 Call Trace: [<c043335a>] ? tg_shares_up+0x134/0x1bb [<c042c0d4>] ? tg_nop+0x0/0xc [<c042c0c0>] ? walk_tg_tree+0x63/0x77 [<c0433226>] ? tg_shares_up+0x0/0x1bb [<c04328f4>] ? update_shares+0x69/0x71 [<c04335ec>] ? select_task_rq_fair+0x153/0x5dc [<c043b905>] ? try_to_wake_up+0x7f/0x28a [<c043bb20>] ? default_wake_function+0x10/0x12 [<c042ce2d>] ? __wake_up_common+0x37/0x5e [<c0430d62>] ? complete+0x30/0x43 [<c0453281>] ? wakeme_after_rcu+0x10/0x12 [<c0482997>] ? __rcu_process_callbacks+0x141/0x201 [<c0482a7c>] ? rcu_process_callbacks+0x25/0x44 [<c0445167>] ? __do_softirq+0xbc/0x173 [<c0445259>] ? do_softirq+0x3b/0x5f [<c0445371>] ? irq_exit+0x3a/0x6d [<c041dd82>] ? smp_apic_timer_interrupt+0x6d/0x7b [<c0408d7b>] ? apic_timer_interrupt+0x2f/0x34 [<c0425854>] ? native_safe_halt+0xa/0xc [<c040e63b>] ? default_idle+0x4a/0x7c [<c0460b8d>] ? tick_nohz_restart_sched_tick+0x115/0x123 [<c0407637>] ? cpu_idle+0x58/0x79 [<c075a578>] ? start_secondary+0x19c/0x1a1 Code: 55 89 e5 56 53 0f 1f 44 00 00 89 c3 9c 58 8d 74 26 00 89 c6 fa 90 8d 74 26 00 e8 96 2b d3 ff b8 00 01 00 00 f0 66 0f c1 03 38 e0 <74> 06 f3 90 8a 03 eb f6 89 f0 5b 5e 5d c3 55 89 e5 53 0f 1f 44 ---[ end trace 8a14be6828557ade ]--- Kernel panic - not syncing: Non maskable interrupt Pid: 0, comm: swapper Tainted: G D 2.6.31-tip #2 Call Trace: [<c075d4b7>] ? printk+0x14/0x1d [<c075d3fc>] panic+0x3e/0xe5 [<c075fe2a>] die_nmi+0x86/0xd8 [<c0760324>] nmi_watchdog_tick+0x107/0x16e [<c075f8bf>] do_nmi+0xa3/0x27f [<c075f485>] nmi_stack_correct+0x28/0x2d [<c075f208>] ? _spin_lock_irqsave+0x2b/0x39 [<c043335a>] tg_shares_up+0x134/0x1bb [<c042c0d4>] ? tg_nop+0x0/0xc [<c042c0c0>] walk_tg_tree+0x63/0x77 [<c0433226>] ? tg_shares_up+0x0/0x1bb [<c04328f4>] update_shares+0x69/0x71 [<c04335ec>] select_task_rq_fair+0x153/0x5dc [<c043b905>] try_to_wake_up+0x7f/0x28a [<c043bb20>] default_wake_function+0x10/0x12 [<c042ce2d>] __wake_up_common+0x37/0x5e [<c0430d62>] complete+0x30/0x43 [<c0453281>] wakeme_after_rcu+0x10/0x12 [<c0482997>] __rcu_process_callbacks+0x141/0x201 [<c0482a7c>] rcu_process_callbacks+0x25/0x44 [<c0445167>] __do_softirq+0xbc/0x173 [<c0445259>] do_softirq+0x3b/0x5f [<c0445371>] irq_exit+0x3a/0x6d [<c041dd82>] smp_apic_timer_interrupt+0x6d/0x7b [<c0408d7b>] apic_timer_interrupt+0x2f/0x34 [<c0425854>] ? native_safe_halt+0xa/0xc [<c040e63b>] default_idle+0x4a/0x7c [<c0460b8d>] ? tick_nohz_restart_sched_tick+0x115/0x123 [<c0407637>] cpu_idle+0x58/0x79 [<c075a578>] start_secondary+0x19c/0x1a1 Rebooting in 1 seconds.. > I am not sure about tip but i am able to create the problem pretty > easily on 2.6.31-rc7 with that config file. > > Only the changes i have done in the config file from (2.6.31-rc7) is : > - Disabled KVM as it was giving me error on -tip kernel. > - Applied following patch : > http://www.gossamer-threads.com/lists/linux/kernel/1129527 > > Please let me know if you are able to recreate it on -tip with > following config. > ------------------------------------------------------------------------ > > _______________________________________________ > Containers mailing list > Containers@lists.linux-foundation.org > https://lists.linux-foundation.org/mailman/listinfo/containers I am able to reproduce this bug on F12-Alpha on 64 bit machine also. So
looks like it is a sever bug which need early fix.
For all at same page, i am rewriting the steps once again.
- Create two container using lxc tool. ( used lxc-0.6.3).
lxc-execute -n foo1 -f /usr/etc/lxc/lxc-macvlan.conf /bin/bash
lxc-execute -n foo2 -f /usr/etc/lxc/lxc-complex-config /bin/bash
- Compile and run ltp controller testcase inside both container.
- once it runs cpu latency testcase you can observe the trace.
-Rishi
BUG: soft lockup - CPU#1 stuck for 61s! [cpuctl_latency_:27296]
Modules linked in: veth fuse tun ipt_MASQUERADE iptable_nat nf_nat
bridge stp llc nfsd lockd nfs_acl auth_rpcgss exportfs sunrpc ipv6
p4_clockmod freq_table speedstep_lib dm_multipath kvm_intel kvm uinput
ibmpex ibmaem ipmi_msghandler ics932s401 iTCO_wdt iTCO_vendor_support
joydev serio_raw i2c_i801 bnx2 ses enclosure i5k_amb hwmon igb shpchp
i5000_edac edac_core dca aacraid radeon ttm drm_kms_helper drm
i2c_algo_bit i2c_core [last unloaded: freq_table]
irq event stamp: 0
hardirqs last enabled at (0): [<(null)>] (null)
hardirqs last disabled at (0): [<ffffffff81062500>]
copy_process+0x5b9/0x1478
softirqs last enabled at (0): [<ffffffff81062500>]
copy_process+0x5b9/0x1478
softirqs last disabled at (0): [<(null)>] (null)
CPU 1:
Modules linked in: veth fuse tun ipt_MASQUERADE iptable_nat nf_nat
bridge stp llc nfsd lockd nfs_acl auth_rpcgss exportfs sunrpc ipv6
p4_clockmod freq_table speedstep_lib dm_multipath kvm_intel kvm uinput
ibmpex ibmaem ipmi_msghandler ics932s401 iTCO_wdt iTCO_vendor_support
joydev serio_raw i2c_i801 bnx2 ses enclosure i5k_amb hwmon igb shpchp
i5000_edac edac_core dca aacraid radeon ttm drm_kms_helper drm
i2c_algo_bit i2c_core [last unloaded: freq_table]
Pid: 27296, comm: cpuctl_latency_ Tainted: G W
2.6.31-14.fc12.x86_64 #1 IBM System x3550 -[7978C5Z]-
RIP: 0010:[<ffffffff81276dff>] [<ffffffff81276dff>] find_next_bit+0x5b/0xc3
RSP: 0000:ffff8800047e1c50 EFLAGS: 00000286
RAX: 0000000000000000 RBX: ffff8800047e1c60 RCX: 0000000000000004
RDX: 0000000000000004 RSI: 0000000000000200 RDI: 0000000000000200
RBP: ffffffff81012bf3 R08: 0000000000000000 R09: ffff8800047ede88
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8800047e1bd0
R13: 0000000000000400 R14: ffff8800392bb6c0 R15: 00000000096981ea
FS: 00007f395ff0e700(0000) GS:ffff8800047de000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbfb98f0db0 CR3: 000000000d394000 CR4: 00000000000026f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
<IRQ> [<ffffffff8104eb31>] ? cpumask_next+0x30/0x46
[<ffffffff81054442>] ? tg_shares_up+0x17b/0x1af
[<ffffffff810542c7>] ? tg_shares_up+0x0/0x1af
[<ffffffff81049447>] ? tg_nop+0x0/0x32
[<ffffffff8104f708>] ? walk_tg_tree+0x8e/0xca
[<ffffffff8104f682>] ? walk_tg_tree+0x8/0xca
[<ffffffff810579fc>] ? update_shares+0x59/0x74
[<ffffffff8105c8e7>] ? rebalance_domains+0x178/0x599
[<ffffffff81085a1b>] ? hrtimer_interrupt+0x158/0x183
[<ffffffff8109602f>] ? trace_hardirqs_on_caller+0x32/0x175
[<ffffffff8105cd60>] ? run_rebalance_domains+0x58/0xf6
[<ffffffff815063eb>] ? _spin_unlock_irq+0x3f/0x61
[<ffffffff8106bf96>] ? __do_softirq+0xf6/0x1f0
[<ffffffff81095123>] ? trace_hardirqs_off_caller+0x32/0xd0
[<ffffffff8101322c>] ? call_softirq+0x1c/0x30
[<ffffffff81014d77>] ? do_softirq+0x5f/0xd7
[<ffffffff8106b8ad>] ? irq_exit+0x66/0xbc
[<ffffffff8102b724>] ? smp_apic_timer_interrupt+0x99/0xbf
[<ffffffff81012bf3>] ? apic_timer_interrupt+0x13/0x20
<EOI>
Rishikesh wrote:
> Rishikesh wrote:
>
>> Dhaval Giani wrote:
>>
>>> On Fri, Sep 11, 2009 at 02:28:13PM -0700, Andrew Morton wrote:
>>>
>>>
>>>> (switched to email. Please respond via emailed reply-to-all, not
>>>> via the
>>>> bugzilla web interface).
>>>>
>>>> On Thu, 10 Sep 2009 09:32:30 GMT
>>>> bugzilla-daemon@bugzilla.kernel.org wrote:
>>>>
>>>>
>>>>
>>>>> http://bugzilla.kernel.org/show_bug.cgi?id=14150
>>>>>
>>>>> Summary: BUG: soft lockup - CPU#3 stuck for 61s!, while
>>>>> running
>>>>> cpu controller latency testcase on two containers
>>>>> parallaly
>>>>> Product: Process Management
>>>>> Version: 2.5
>>>>> Kernel Version: 2.6.31-rc7
>>>>> Platform: All
>>>>> OS/Version: Linux
>>>>> Tree: Mainline
>>>>> Status: NEW
>>>>> Severity: high
>>>>> Priority: P1
>>>>> Component: Scheduler
>>>>> AssignedTo: mingo@elte.hu
>>>>> ReportedBy: risrajak@linux.vnet.ibm.com
>>>>> CC: serue@us.ibm.com, iranna.ankad@in.ibm.com,
>>>>> risrajak@in.ibm.com
>>>>> Regression: No
>>>>>
>>>>>
>>>>> Created an attachment (id=23055)
>>>>> --> (http://bugzilla.kernel.org/attachment.cgi?id=23055)
>>>>> Config-file-used
>>>>>
>>>>> Hitting this soft lock issue while running this scenario on
>>>>> 2.6.31-rc7 kernel
>>>>> on SystemX 32 bit on multiple machines.
>>>>>
>>>>> Scenario:
>>>>> - While running cpu controller latency testcase from LTP same
>>>>> time on two
>>>>> containers.
>>>>>
>>>>> Steps:
>>>>> 1. Compile ltp-full-20090731.tgz on host.
>>>>> 2. Create two container (Used lxc tool
>>>>> (http://sourceforge.net/projects/lxc/lxc-0.6.3.tar.gz) for creating
>>>>> container )
>>>>> e.g:
>>>>> lxc-create -n foo1
>>>>> lxc-create -n foo2
>>>>> On first shell:
>>>>> lxc-execute -n foo1 -f /usr/etc/lxc/lxc-macvlan.conf /bin/bash
>>>>> on Second shell:
>>>>> lxc-execute -n foo2 -f /usr/etc/lxc/lxc-macvlan.conf /bin/bash
>>>>>
>>>>> 3. Either you run cpu_latency testcase alone or run "./runltp -f
>>>>> controllers"
>>>>> at same time on both the containers.
>>>>> 4. After testcase execution completes, you can see this message in
>>>>> dmesg.
>>>>>
>>>>> Expected Result:
>>>>> - Should not reproduce soft lock up issue.
>>>>> - This reproduces 3 times out of 5 tries.
>>>>>
>>>>> hrtimer: interrupt too slow, forcing clock min delta to 5843235 ns
>>>>> hrtimer: interrupt too slow, forcing clock min delta to 5842476 ns
>>>>> Clocksource tsc unstable (delta = 18749057581 ns)
>>>>> BUG: soft lockup - CPU#3 stuck for 61s! [cpuctl_latency_:17174]
>>>>> Modules linked in: bridge stp llc bnep sco l2cap bluetooth sunrpc ipv6
>>>>> p4_clockmod dm_multipath uinput qla2xxx ata_generic pata_acpi
>>>>> usb_storage e1000
>>>>> scsi_transport_fc joydev scsi_tgt i2c_piix4 pata_serverworks pcspkr
>>>>> serio_raw
>>>>> mptspi mptscsih mptbase scsi_transport_spi radeon ttm drm
>>>>> i2c_algo_bit i2c_core
>>>>> [last unloaded: scsi_wait_scan]
>>>>>
>>>>> Pid: 17174, comm: cpuctl_latency_ Tainted: G W (2.6.31-rc7
>>>>> #1) IBM
>>>>> eServer BladeCenter HS40 -[883961X]- EIP:
>>>>> 0060:[<c058aded>] EFLAGS: 00000283 CPU: 3
>>>>> EIP is at find_next_bit+0x9/0x79
>>>>> EAX: c2c437a0 EBX: f3d433c0 ECX: 00000000 EDX: 00000020
>>>>> ESI: c2c436bc EDI: 00000000 EBP: f063be6c ESP: f063be64
>>>>> DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
>>>>> CR0: 80050033 CR2: 008765a4 CR3: 314d7000 CR4: 000006d0
>>>>> DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
>>>>> DR6: ffff0ff0 DR7: 00000400
>>>>> Call Trace:
>>>>> [<c0427b6e>] cpumask_next+0x17/0x19
>>>>> [<c042c28d>] tg_shares_up+0x53/0x149
>>>>> [<c0424082>] ? tg_nop+0x0/0xc
>>>>> [<c0424082>] ? tg_nop+0x0/0xc
>>>>> [<c042406e>] walk_tg_tree+0x63/0x77
>>>>> [<c042c23a>] ? tg_shares_up+0x0/0x149
>>>>> [<c042e836>] update_shares+0x5d/0x65
>>>>> [<c0432af3>] rebalance_domains+0x114/0x460
>>>>> [<c0403393>] ? restore_all_notrace+0x0/0x18
>>>>> [<c0432e75>] run_rebalance_domains+0x36/0xa3
>>>>> [<c043c324>] __do_softirq+0xbc/0x173
>>>>> [<c043c416>] do_softirq+0x3b/0x5f
>>>>> [<c043c52d>] irq_exit+0x3a/0x68
>>>>> [<c0417846>] smp_apic_timer_interrupt+0x6d/0x7b
>>>>> [<c0403c9b>] apic_timer_interrupt+0x2f/0x34
>>>>> BUG: soft lockup - CPU#2 stuck for 61s! [watchdog/2:11]
>>>>> Modules linked in: bridge stp llc bnep sco l2cap bluetooth sunrpc ipv6
>>>>> p4_clockmod dm_multipath uinput qla2xxx ata_generic pata_acpi
>>>>> usb_storage e1000
>>>>> scsi_transport_fc joydev scsi_tgt i2c_piix4 pata_serverworks pcspkr
>>>>> serio_raw
>>>>> mptspi mptscsih mptbase scsi_transport_spi radeon ttm drm
>>>>> i2c_algo_bit i2c_core
>>>>> [last unloaded: scsi_wait_scan]
>>>>>
>>>>> Pid: 11, comm: watchdog/2 Tainted: G W (2.6.31-rc7 #1) IBM
>>>>> eServer
>>>>> BladeCenter HS40 -[883961X]- EIP:
>>>>> 0060:[<c042c313>] EFLAGS: 00000246 CPU: 2
>>>>> EIP is at tg_shares_up+0xd9/0x149
>>>>> EAX: 00000000 EBX: f09b3c00 ECX: f0baac00 EDX: 00000100
>>>>> ESI: 00000002 EDI: 00000400 EBP: f6cb7de0 ESP: f6cb7db8
>>>>> DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
>>>>> CR0: 8005003b CR2: 08070680 CR3: 009c8000 CR4: 000006d0
>>>>> DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
>>>>> DR6: ffff0ff0 DR7: 00000400
>>>>> Call Trace:
>>>>> [<c0424082>] ? tg_nop+0x0/0xc
>>>>> [<c0424082>] ? tg_nop+0x0/0xc
>>>>> [<c042406e>] walk_tg_tree+0x63/0x77
>>>>> [<c042c23a>] ? tg_shares_up+0x0/0x149
>>>>> [<c042e836>] update_shares+0x5d/0x65
>>>>> [<c0432af3>] rebalance_domains+0x114/0x460
>>>>> [<c0432e75>] run_rebalance_domains+0x36/0xa3
>>>>> [<c043c324>] __do_softirq+0xbc/0x173
>>>>> [<c043c416>] do_softirq+0x3b/0x5f
>>>>> [<c043c52d>] irq_exit+0x3a/0x68
>>>>> [<c0417846>] smp_apic_timer_interrupt+0x6d/0x7b
>>>>> [<c0403c9b>] apic_timer_interrupt+0x2f/0x34
>>>>> [<c0430d37>] ? finish_task_switch+0x5d/0xc4
>>>>> [<c0744b11>] schedule+0x74c/0x7b2
>>>>> [<c0590e28>] ? trace_hardirqs_on_thunk+0xc/0x10
>>>>> [<c0403393>] ? restore_all_notrace+0x0/0x18
>>>>> [<c0471e19>] ? watchdog+0x0/0x79
>>>>> [<c0471e19>] ? watchdog+0x0/0x79
>>>>> [<c0471e63>] watchdog+0x4a/0x79
>>>>> [<c0449a53>] kthread+0x70/0x75
>>>>> [<c04499e3>] ? kthread+0x0/0x75
>>>>> [<c0403e93>] kernel_thread_helper+0x7/0x10
>>>>> [root@hs40 ltp-full-20090731]# uname -a
>>>>> Linux hs40.in.ibm.com 2.6.31-rc7 #1 SMP Thu Sep 3 10:14:41 IST 2009
>>>>> i686 i686
>>>>> i386 GNU/Linux
>>>>> [root@hs40 ltp-full-20090731]#
>>>>>
>>>>>
>>>>>
>>> We have been unable to reproduce it on current -tip. Rishi, are you able
>>> to reproduce it on -tip?
>>>
>>> thanks,
>>>
>>>
>> I am not able to create container with lxc on -tip kernel with config
>> file attached. As soon as i am executing "lxc-execute ..." it hangs
>> and only way to recover is to hard reboot system.
>>
>
> enabled the nmi_watchdog on tip kernel and found this call trace on
> system while executing "lxc-execute ..." command ( creating container).
>
> x335a.in.ibm.com login: BUG: NMI Watchdog detected LOCKUP on CPU1, ip
> c075f208, registers:
> Modules linked in: nfs lockd nfs_acl auth_rpcgss bridge stp llc bnep sco
> l2cap bluetooth autofs4 sunrpc ipv6 p4_clockmod dm_multipath uinput
> ata_generic pata_acpi pata_serverworks i2c_piix4 floppy tg3 i2c_core
> pcspkr serio_raw mptspi mptscsih mptbase scsi_transport_spi [last
> unloaded: scsi_wait_scan]
>
> Pid: 0, comm: swapper Not tainted (2.6.31-tip #2) eserver xSeries 335
> -[867641X]-
> EIP: 0060:[<c075f208>] EFLAGS: 00000097 CPU: 1
> EIP is at _spin_lock_irqsave+0x2b/0x39
> EAX: 00002625 EBX: c3128e00 ECX: 00000000 EDX: 00000200
> ESI: 00000086 EDI: 00000400 EBP: f70a9d58 ESP: f70a9d50
> DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
> Process swapper (pid: 0, ti=f70a8000 task=f7086780 task.ti=f70a8000)
> Stack:
> f6461a80 00000001 f70a9d94 c043335a 00000200 00000400 c31243d8 c3124350
> <0> c31244c0 c3128e00 c09f3e00 00000086 00000001 00000800 f6461a80 c31243d8
> <0> c042c0d4 f70a9dac c042c0c0 c0433226 c31243d8 000b71b0 00000000 f70a9dd0
> Call Trace:
> [<c043335a>] ? tg_shares_up+0x134/0x1bb
> [<c042c0d4>] ? tg_nop+0x0/0xc
> [<c042c0c0>] ? walk_tg_tree+0x63/0x77
> [<c0433226>] ? tg_shares_up+0x0/0x1bb
> [<c04328f4>] ? update_shares+0x69/0x71
> [<c04335ec>] ? select_task_rq_fair+0x153/0x5dc
> [<c043b905>] ? try_to_wake_up+0x7f/0x28a
> [<c043bb20>] ? default_wake_function+0x10/0x12
> [<c042ce2d>] ? __wake_up_common+0x37/0x5e
> [<c0430d62>] ? complete+0x30/0x43
> [<c0453281>] ? wakeme_after_rcu+0x10/0x12
> [<c0482997>] ? __rcu_process_callbacks+0x141/0x201
> [<c0482a7c>] ? rcu_process_callbacks+0x25/0x44
> [<c0445167>] ? __do_softirq+0xbc/0x173
> [<c0445259>] ? do_softirq+0x3b/0x5f
> [<c0445371>] ? irq_exit+0x3a/0x6d
> [<c041dd82>] ? smp_apic_timer_interrupt+0x6d/0x7b
> [<c0408d7b>] ? apic_timer_interrupt+0x2f/0x34
> [<c0425854>] ? native_safe_halt+0xa/0xc
> [<c040e63b>] ? default_idle+0x4a/0x7c
> [<c0460b8d>] ? tick_nohz_restart_sched_tick+0x115/0x123
> [<c0407637>] ? cpu_idle+0x58/0x79
> [<c075a578>] ? start_secondary+0x19c/0x1a1
> Code: 55 89 e5 56 53 0f 1f 44 00 00 89 c3 9c 58 8d 74 26 00 89 c6 fa 90
> 8d 74 26 00 e8 96 2b d3 ff b8 00 01 00 00 f0 66 0f c1 03 38 e0 <74> 06
> f3 90 8a 03 eb f6 89 f0 5b 5e 5d c3 55 89 e5 53 0f 1f 44
> ---[ end trace 8a14be6828557ade ]---
> Kernel panic - not syncing: Non maskable interrupt
> Pid: 0, comm: swapper Tainted: G D 2.6.31-tip #2
> Call Trace:
> [<c075d4b7>] ? printk+0x14/0x1d
> [<c075d3fc>] panic+0x3e/0xe5
> [<c075fe2a>] die_nmi+0x86/0xd8
> [<c0760324>] nmi_watchdog_tick+0x107/0x16e
> [<c075f8bf>] do_nmi+0xa3/0x27f
> [<c075f485>] nmi_stack_correct+0x28/0x2d
> [<c075f208>] ? _spin_lock_irqsave+0x2b/0x39
> [<c043335a>] tg_shares_up+0x134/0x1bb
> [<c042c0d4>] ? tg_nop+0x0/0xc
> [<c042c0c0>] walk_tg_tree+0x63/0x77
> [<c0433226>] ? tg_shares_up+0x0/0x1bb
> [<c04328f4>] update_shares+0x69/0x71
> [<c04335ec>] select_task_rq_fair+0x153/0x5dc
> [<c043b905>] try_to_wake_up+0x7f/0x28a
> [<c043bb20>] default_wake_function+0x10/0x12
> [<c042ce2d>] __wake_up_common+0x37/0x5e
> [<c0430d62>] complete+0x30/0x43
> [<c0453281>] wakeme_after_rcu+0x10/0x12
> [<c0482997>] __rcu_process_callbacks+0x141/0x201
> [<c0482a7c>] rcu_process_callbacks+0x25/0x44
> [<c0445167>] __do_softirq+0xbc/0x173
> [<c0445259>] do_softirq+0x3b/0x5f
> [<c0445371>] irq_exit+0x3a/0x6d
> [<c041dd82>] smp_apic_timer_interrupt+0x6d/0x7b
> [<c0408d7b>] apic_timer_interrupt+0x2f/0x34
> [<c0425854>] ? native_safe_halt+0xa/0xc
> [<c040e63b>] default_idle+0x4a/0x7c
> [<c0460b8d>] ? tick_nohz_restart_sched_tick+0x115/0x123
> [<c0407637>] cpu_idle+0x58/0x79
> [<c075a578>] start_secondary+0x19c/0x1a1
> Rebooting in 1 seconds..
>
>
>
>> I am not sure about tip but i am able to create the problem pretty
>> easily on 2.6.31-rc7 with that config file.
>>
>> Only the changes i have done in the config file from (2.6.31-rc7) is :
>> - Disabled KVM as it was giving me error on -tip kernel.
>> - Applied following patch :
>> http://www.gossamer-threads.com/lists/linux/kernel/1129527
>>
>> Please let me know if you are able to recreate it on -tip with
>> following config.
>> ------------------------------------------------------------------------
>>
>> _______________________________________________
>> Containers mailing list
>> Containers@lists.linux-foundation.org
>> https://lists.linux-foundation.org/mailman/listinfo/containers
>>
>
> _______________________________________________
> Containers mailing list
> Containers@lists.linux-foundation.org
> https://lists.linux-foundation.org/mailman/listinfo/containers
>
Hi Dhaval,
Today i tried 2 more scenario requested by you on -tip kernel:
1> mount cpu on cgroup & other susbsystems ( ns, cpuset,freezer...
except cpu) on cgroup1 e.g:.
/root/lxc on /cgroup type cgroup
(rw,ns,cpuset,freezer,devices,memory,cpuacct,net_cls)
none on /cgroup1 type cgroup (rw,cpu)
Result: I am able to create container ( no crash after "lxc-execute
..." command execution).
2> mount cpu,ns on cgroup
[root@x335a ~]# mount
none on /cgroup type cgroup (rw,ns,cpu)
[root@x335a ~]# lxc-execute -n foo2 -f /etc/lxc/lxc-macvlan.conf /bin/bash
Result : The system crash with following trace once i execute
lxc-execute command:
x335a.in.ibm.com login: BUG: NMI Watchdog detected LOCKUP on CPU1, ip
c0425854, registers:
Modules linked in: nfs lockd nfs_acl auth_rpcgss bridge stp llc bnep sco
l2cap bluetooth autofs4 sunrpc ipv6 p4_clockmod dm_multipath uinput
ata_generic pata_acpi floppy i2c_piix4 i2c_core pata_serverworks tg3
pcspkr serio_raw mptspi mptscsih mptbase scsi_transport_spi [last
unloaded: scsi_wait_scan]
Pid: 0, comm: swapper Not tainted (2.6.31-tip #2) eserver xSeries 335
-[867641X]-
EIP: 0060:[<c0425854>] EFLAGS: 00000246 CPU: 1
EIP is at native_safe_halt+0xa/0xc
EAX: f70a8000 EBX: c096f0d4 ECX: b9d8d702 EDX: 00000001
ESI: 00000001 EDI: 00000000 EBP: f70a9f74 ESP: f70a9f74
DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
Process swapper (pid: 0, ti=f70a8000 task=f7086780 task.ti=f70a8000)
Stack:
f70a9f94 c040e63b f70a9f94 c0460b8d 00000001 c096f0d4 00000001 00000000
<0> f70a9fa4 c0407637 00000001 00000000 f70a9fb0 c075a578 0602080b 00000000
<0> 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Call Trace:
[<c040e63b>] ? default_idle+0x4a/0x7c
[<c0460b8d>] ? tick_nohz_restart_sched_tick+0x115/0x123
[<c0407637>] ? cpu_idle+0x58/0x79
[<c075a578>] ? start_secondary+0x19c/0x1a1
Code: 89 e5 0f 1f 44 00 00 50 9d 5d c3 55 89 e5 0f 1f 44 00 00 fa 5d c3
55 89 e5 0f 1f 44 00 00 fb 5d c3 55 89 e5 0f 1f 44 00 00 fb f4 <5d> c3
55 89 e5 0f 1f 44 00 00 f4 5d c3 55 89 e5 0f 1f 44 00 00
Evening i am going to try 3rd scenario:
- Enable CONFIG_PROVE_LOCKING and then execute above scenario once
again.
Hope above result will help you to debug further.
-Rishi
Rishikesh wrote:
> I am able to reproduce this bug on F12-Alpha on 64 bit machine also. So
> looks like it is a sever bug which need early fix.
> For all at same page, i am rewriting the steps once again.
>
> - Create two container using lxc tool. ( used lxc-0.6.3).
> lxc-execute -n foo1 -f /usr/etc/lxc/lxc-macvlan.conf /bin/bash
> lxc-execute -n foo2 -f /usr/etc/lxc/lxc-complex-config /bin/bash
>
> - Compile and run ltp controller testcase inside both container.
> - once it runs cpu latency testcase you can observe the trace.
>
> -Rishi
>
> BUG: soft lockup - CPU#1 stuck for 61s! [cpuctl_latency_:27296]
> Modules linked in: veth fuse tun ipt_MASQUERADE iptable_nat nf_nat
> bridge stp llc nfsd lockd nfs_acl auth_rpcgss exportfs sunrpc ipv6
> p4_clockmod freq_table speedstep_lib dm_multipath kvm_intel kvm uinput
> ibmpex ibmaem ipmi_msghandler ics932s401 iTCO_wdt iTCO_vendor_support
> joydev serio_raw i2c_i801 bnx2 ses enclosure i5k_amb hwmon igb shpchp
> i5000_edac edac_core dca aacraid radeon ttm drm_kms_helper drm
> i2c_algo_bit i2c_core [last unloaded: freq_table]
> irq event stamp: 0
> hardirqs last enabled at (0): [<(null)>] (null)
> hardirqs last disabled at (0): [<ffffffff81062500>]
> copy_process+0x5b9/0x1478
> softirqs last enabled at (0): [<ffffffff81062500>]
> copy_process+0x5b9/0x1478
> softirqs last disabled at (0): [<(null)>] (null)
> CPU 1:
> Modules linked in: veth fuse tun ipt_MASQUERADE iptable_nat nf_nat
> bridge stp llc nfsd lockd nfs_acl auth_rpcgss exportfs sunrpc ipv6
> p4_clockmod freq_table speedstep_lib dm_multipath kvm_intel kvm uinput
> ibmpex ibmaem ipmi_msghandler ics932s401 iTCO_wdt iTCO_vendor_support
> joydev serio_raw i2c_i801 bnx2 ses enclosure i5k_amb hwmon igb shpchp
> i5000_edac edac_core dca aacraid radeon ttm drm_kms_helper drm
> i2c_algo_bit i2c_core [last unloaded: freq_table]
> Pid: 27296, comm: cpuctl_latency_ Tainted: G W
> 2.6.31-14.fc12.x86_64 #1 IBM System x3550 -[7978C5Z]-
> RIP: 0010:[<ffffffff81276dff>] [<ffffffff81276dff>] find_next_bit+0x5b/0xc3
> RSP: 0000:ffff8800047e1c50 EFLAGS: 00000286
> RAX: 0000000000000000 RBX: ffff8800047e1c60 RCX: 0000000000000004
> RDX: 0000000000000004 RSI: 0000000000000200 RDI: 0000000000000200
> RBP: ffffffff81012bf3 R08: 0000000000000000 R09: ffff8800047ede88
> R10: 0000000000000000 R11: 0000000000000000 R12: ffff8800047e1bd0
> R13: 0000000000000400 R14: ffff8800392bb6c0 R15: 00000000096981ea
> FS: 00007f395ff0e700(0000) GS:ffff8800047de000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 00007fbfb98f0db0 CR3: 000000000d394000 CR4: 00000000000026f0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> Call Trace:
> <IRQ> [<ffffffff8104eb31>] ? cpumask_next+0x30/0x46
> [<ffffffff81054442>] ? tg_shares_up+0x17b/0x1af
> [<ffffffff810542c7>] ? tg_shares_up+0x0/0x1af
> [<ffffffff81049447>] ? tg_nop+0x0/0x32
> [<ffffffff8104f708>] ? walk_tg_tree+0x8e/0xca
> [<ffffffff8104f682>] ? walk_tg_tree+0x8/0xca
> [<ffffffff810579fc>] ? update_shares+0x59/0x74
> [<ffffffff8105c8e7>] ? rebalance_domains+0x178/0x599
> [<ffffffff81085a1b>] ? hrtimer_interrupt+0x158/0x183
> [<ffffffff8109602f>] ? trace_hardirqs_on_caller+0x32/0x175
> [<ffffffff8105cd60>] ? run_rebalance_domains+0x58/0xf6
> [<ffffffff815063eb>] ? _spin_unlock_irq+0x3f/0x61
> [<ffffffff8106bf96>] ? __do_softirq+0xf6/0x1f0
> [<ffffffff81095123>] ? trace_hardirqs_off_caller+0x32/0xd0
> [<ffffffff8101322c>] ? call_softirq+0x1c/0x30
> [<ffffffff81014d77>] ? do_softirq+0x5f/0xd7
> [<ffffffff8106b8ad>] ? irq_exit+0x66/0xbc
> [<ffffffff8102b724>] ? smp_apic_timer_interrupt+0x99/0xbf
> [<ffffffff81012bf3>] ? apic_timer_interrupt+0x13/0x20
> <EOI>
>
>
> Rishikesh wrote:
>
>> Rishikesh wrote:
>>
>>
>>> Dhaval Giani wrote:
>>>
>>>
>>>> On Fri, Sep 11, 2009 at 02:28:13PM -0700, Andrew Morton wrote:
>>>>
>>>>
>>>>
>>>>> (switched to email. Please respond via emailed reply-to-all, not
>>>>> via the
>>>>> bugzilla web interface).
>>>>>
>>>>> On Thu, 10 Sep 2009 09:32:30 GMT
>>>>> bugzilla-daemon@bugzilla.kernel.org wrote:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>> http://bugzilla.kernel.org/show_bug.cgi?id=14150
>>>>>>
>>>>>> Summary: BUG: soft lockup - CPU#3 stuck for 61s!, while
>>>>>> running
>>>>>> cpu controller latency testcase on two containers
>>>>>> parallaly
>>>>>> Product: Process Management
>>>>>> Version: 2.5
>>>>>> Kernel Version: 2.6.31-rc7
>>>>>> Platform: All
>>>>>> OS/Version: Linux
>>>>>> Tree: Mainline
>>>>>> Status: NEW
>>>>>> Severity: high
>>>>>> Priority: P1
>>>>>> Component: Scheduler
>>>>>> AssignedTo: mingo@elte.hu
>>>>>> ReportedBy: risrajak@linux.vnet.ibm.com
>>>>>> CC: serue@us.ibm.com, iranna.ankad@in.ibm.com,
>>>>>> risrajak@in.ibm.com
>>>>>> Regression: No
>>>>>>
>>>>>>
>>>>>> Created an attachment (id=23055)
>>>>>> --> (http://bugzilla.kernel.org/attachment.cgi?id=23055)
>>>>>> Config-file-used
>>>>>>
>>>>>> Hitting this soft lock issue while running this scenario on
>>>>>> 2.6.31-rc7 kernel
>>>>>> on SystemX 32 bit on multiple machines.
>>>>>>
>>>>>> Scenario:
>>>>>> - While running cpu controller latency testcase from LTP same
>>>>>> time on two
>>>>>> containers.
>>>>>>
>>>>>> Steps:
>>>>>> 1. Compile ltp-full-20090731.tgz on host.
>>>>>> 2. Create two container (Used lxc tool
>>>>>> (http://sourceforge.net/projects/lxc/lxc-0.6.3.tar.gz) for creating
>>>>>> container )
>>>>>> e.g:
>>>>>> lxc-create -n foo1
>>>>>> lxc-create -n foo2
>>>>>> On first shell:
>>>>>> lxc-execute -n foo1 -f /usr/etc/lxc/lxc-macvlan.conf /bin/bash
>>>>>> on Second shell:
>>>>>> lxc-execute -n foo2 -f /usr/etc/lxc/lxc-macvlan.conf /bin/bash
>>>>>>
>>>>>> 3. Either you run cpu_latency testcase alone or run "./runltp -f
>>>>>> controllers"
>>>>>> at same time on both the containers.
>>>>>> 4. After testcase execution completes, you can see this message in
>>>>>> dmesg.
>>>>>>
>>>>>> Expected Result:
>>>>>> - Should not reproduce soft lock up issue.
>>>>>> - This reproduces 3 times out of 5 tries.
>>>>>>
>>>>>> hrtimer: interrupt too slow, forcing clock min delta to 5843235 ns
>>>>>> hrtimer: interrupt too slow, forcing clock min delta to 5842476 ns
>>>>>> Clocksource tsc unstable (delta = 18749057581 ns)
>>>>>> BUG: soft lockup - CPU#3 stuck for 61s! [cpuctl_latency_:17174]
>>>>>> Modules linked in: bridge stp llc bnep sco l2cap bluetooth sunrpc ipv6
>>>>>> p4_clockmod dm_multipath uinput qla2xxx ata_generic pata_acpi
>>>>>> usb_storage e1000
>>>>>> scsi_transport_fc joydev scsi_tgt i2c_piix4 pata_serverworks pcspkr
>>>>>> serio_raw
>>>>>> mptspi mptscsih mptbase scsi_transport_spi radeon ttm drm
>>>>>> i2c_algo_bit i2c_core
>>>>>> [last unloaded: scsi_wait_scan]
>>>>>>
>>>>>> Pid: 17174, comm: cpuctl_latency_ Tainted: G W (2.6.31-rc7
>>>>>> #1) IBM
>>>>>> eServer BladeCenter HS40 -[883961X]- EIP:
>>>>>> 0060:[<c058aded>] EFLAGS: 00000283 CPU: 3
>>>>>> EIP is at find_next_bit+0x9/0x79
>>>>>> EAX: c2c437a0 EBX: f3d433c0 ECX: 00000000 EDX: 00000020
>>>>>> ESI: c2c436bc EDI: 00000000 EBP: f063be6c ESP: f063be64
>>>>>> DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
>>>>>> CR0: 80050033 CR2: 008765a4 CR3: 314d7000 CR4: 000006d0
>>>>>> DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
>>>>>> DR6: ffff0ff0 DR7: 00000400
>>>>>> Call Trace:
>>>>>> [<c0427b6e>] cpumask_next+0x17/0x19
>>>>>> [<c042c28d>] tg_shares_up+0x53/0x149
>>>>>> [<c0424082>] ? tg_nop+0x0/0xc
>>>>>> [<c0424082>] ? tg_nop+0x0/0xc
>>>>>> [<c042406e>] walk_tg_tree+0x63/0x77
>>>>>> [<c042c23a>] ? tg_shares_up+0x0/0x149
>>>>>> [<c042e836>] update_shares+0x5d/0x65
>>>>>> [<c0432af3>] rebalance_domains+0x114/0x460
>>>>>> [<c0403393>] ? restore_all_notrace+0x0/0x18
>>>>>> [<c0432e75>] run_rebalance_domains+0x36/0xa3
>>>>>> [<c043c324>] __do_softirq+0xbc/0x173
>>>>>> [<c043c416>] do_softirq+0x3b/0x5f
>>>>>> [<c043c52d>] irq_exit+0x3a/0x68
>>>>>> [<c0417846>] smp_apic_timer_interrupt+0x6d/0x7b
>>>>>> [<c0403c9b>] apic_timer_interrupt+0x2f/0x34
>>>>>> BUG: soft lockup - CPU#2 stuck for 61s! [watchdog/2:11]
>>>>>> Modules linked in: bridge stp llc bnep sco l2cap bluetooth sunrpc ipv6
>>>>>> p4_clockmod dm_multipath uinput qla2xxx ata_generic pata_acpi
>>>>>> usb_storage e1000
>>>>>> scsi_transport_fc joydev scsi_tgt i2c_piix4 pata_serverworks pcspkr
>>>>>> serio_raw
>>>>>> mptspi mptscsih mptbase scsi_transport_spi radeon ttm drm
>>>>>> i2c_algo_bit i2c_core
>>>>>> [last unloaded: scsi_wait_scan]
>>>>>>
>>>>>> Pid: 11, comm: watchdog/2 Tainted: G W (2.6.31-rc7 #1) IBM
>>>>>> eServer
>>>>>> BladeCenter HS40 -[883961X]- EIP:
>>>>>> 0060:[<c042c313>] EFLAGS: 00000246 CPU: 2
>>>>>> EIP is at tg_shares_up+0xd9/0x149
>>>>>> EAX: 00000000 EBX: f09b3c00 ECX: f0baac00 EDX: 00000100
>>>>>> ESI: 00000002 EDI: 00000400 EBP: f6cb7de0 ESP: f6cb7db8
>>>>>> DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
>>>>>> CR0: 8005003b CR2: 08070680 CR3: 009c8000 CR4: 000006d0
>>>>>> DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
>>>>>> DR6: ffff0ff0 DR7: 00000400
>>>>>> Call Trace:
>>>>>> [<c0424082>] ? tg_nop+0x0/0xc
>>>>>> [<c0424082>] ? tg_nop+0x0/0xc
>>>>>> [<c042406e>] walk_tg_tree+0x63/0x77
>>>>>> [<c042c23a>] ? tg_shares_up+0x0/0x149
>>>>>> [<c042e836>] update_shares+0x5d/0x65
>>>>>> [<c0432af3>] rebalance_domains+0x114/0x460
>>>>>> [<c0432e75>] run_rebalance_domains+0x36/0xa3
>>>>>> [<c043c324>] __do_softirq+0xbc/0x173
>>>>>> [<c043c416>] do_softirq+0x3b/0x5f
>>>>>> [<c043c52d>] irq_exit+0x3a/0x68
>>>>>> [<c0417846>] smp_apic_timer_interrupt+0x6d/0x7b
>>>>>> [<c0403c9b>] apic_timer_interrupt+0x2f/0x34
>>>>>> [<c0430d37>] ? finish_task_switch+0x5d/0xc4
>>>>>> [<c0744b11>] schedule+0x74c/0x7b2
>>>>>> [<c0590e28>] ? trace_hardirqs_on_thunk+0xc/0x10
>>>>>> [<c0403393>] ? restore_all_notrace+0x0/0x18
>>>>>> [<c0471e19>] ? watchdog+0x0/0x79
>>>>>> [<c0471e19>] ? watchdog+0x0/0x79
>>>>>> [<c0471e63>] watchdog+0x4a/0x79
>>>>>> [<c0449a53>] kthread+0x70/0x75
>>>>>> [<c04499e3>] ? kthread+0x0/0x75
>>>>>> [<c0403e93>] kernel_thread_helper+0x7/0x10
>>>>>> [root@hs40 ltp-full-20090731]# uname -a
>>>>>> Linux hs40.in.ibm.com 2.6.31-rc7 #1 SMP Thu Sep 3 10:14:41 IST 2009
>>>>>> i686 i686
>>>>>> i386 GNU/Linux
>>>>>> [root@hs40 ltp-full-20090731]#
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>> We have been unable to reproduce it on current -tip. Rishi, are you able
>>>> to reproduce it on -tip?
>>>>
>>>> thanks,
>>>>
>>>>
>>>>
>>> I am not able to create container with lxc on -tip kernel with config
>>> file attached. As soon as i am executing "lxc-execute ..." it hangs
>>> and only way to recover is to hard reboot system.
>>>
>>>
>> enabled the nmi_watchdog on tip kernel and found this call trace on
>> system while executing "lxc-execute ..." command ( creating container).
>>
>> x335a.in.ibm.com login: BUG: NMI Watchdog detected LOCKUP on CPU1, ip
>> c075f208, registers:
>> Modules linked in: nfs lockd nfs_acl auth_rpcgss bridge stp llc bnep sco
>> l2cap bluetooth autofs4 sunrpc ipv6 p4_clockmod dm_multipath uinput
>> ata_generic pata_acpi pata_serverworks i2c_piix4 floppy tg3 i2c_core
>> pcspkr serio_raw mptspi mptscsih mptbase scsi_transport_spi [last
>> unloaded: scsi_wait_scan]
>>
>> Pid: 0, comm: swapper Not tainted (2.6.31-tip #2) eserver xSeries 335
>> -[867641X]-
>> EIP: 0060:[<c075f208>] EFLAGS: 00000097 CPU: 1
>> EIP is at _spin_lock_irqsave+0x2b/0x39
>> EAX: 00002625 EBX: c3128e00 ECX: 00000000 EDX: 00000200
>> ESI: 00000086 EDI: 00000400 EBP: f70a9d58 ESP: f70a9d50
>> DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
>> Process swapper (pid: 0, ti=f70a8000 task=f7086780 task.ti=f70a8000)
>> Stack:
>> f6461a80 00000001 f70a9d94 c043335a 00000200 00000400 c31243d8 c3124350
>> <0> c31244c0 c3128e00 c09f3e00 00000086 00000001 00000800 f6461a80 c31243d8
>> <0> c042c0d4 f70a9dac c042c0c0 c0433226 c31243d8 000b71b0 00000000 f70a9dd0
>> Call Trace:
>> [<c043335a>] ? tg_shares_up+0x134/0x1bb
>> [<c042c0d4>] ? tg_nop+0x0/0xc
>> [<c042c0c0>] ? walk_tg_tree+0x63/0x77
>> [<c0433226>] ? tg_shares_up+0x0/0x1bb
>> [<c04328f4>] ? update_shares+0x69/0x71
>> [<c04335ec>] ? select_task_rq_fair+0x153/0x5dc
>> [<c043b905>] ? try_to_wake_up+0x7f/0x28a
>> [<c043bb20>] ? default_wake_function+0x10/0x12
>> [<c042ce2d>] ? __wake_up_common+0x37/0x5e
>> [<c0430d62>] ? complete+0x30/0x43
>> [<c0453281>] ? wakeme_after_rcu+0x10/0x12
>> [<c0482997>] ? __rcu_process_callbacks+0x141/0x201
>> [<c0482a7c>] ? rcu_process_callbacks+0x25/0x44
>> [<c0445167>] ? __do_softirq+0xbc/0x173
>> [<c0445259>] ? do_softirq+0x3b/0x5f
>> [<c0445371>] ? irq_exit+0x3a/0x6d
>> [<c041dd82>] ? smp_apic_timer_interrupt+0x6d/0x7b
>> [<c0408d7b>] ? apic_timer_interrupt+0x2f/0x34
>> [<c0425854>] ? native_safe_halt+0xa/0xc
>> [<c040e63b>] ? default_idle+0x4a/0x7c
>> [<c0460b8d>] ? tick_nohz_restart_sched_tick+0x115/0x123
>> [<c0407637>] ? cpu_idle+0x58/0x79
>> [<c075a578>] ? start_secondary+0x19c/0x1a1
>> Code: 55 89 e5 56 53 0f 1f 44 00 00 89 c3 9c 58 8d 74 26 00 89 c6 fa 90
>> 8d 74 26 00 e8 96 2b d3 ff b8 00 01 00 00 f0 66 0f c1 03 38 e0 <74> 06
>> f3 90 8a 03 eb f6 89 f0 5b 5e 5d c3 55 89 e5 53 0f 1f 44
>> ---[ end trace 8a14be6828557ade ]---
>> Kernel panic - not syncing: Non maskable interrupt
>> Pid: 0, comm: swapper Tainted: G D 2.6.31-tip #2
>> Call Trace:
>> [<c075d4b7>] ? printk+0x14/0x1d
>> [<c075d3fc>] panic+0x3e/0xe5
>> [<c075fe2a>] die_nmi+0x86/0xd8
>> [<c0760324>] nmi_watchdog_tick+0x107/0x16e
>> [<c075f8bf>] do_nmi+0xa3/0x27f
>> [<c075f485>] nmi_stack_correct+0x28/0x2d
>> [<c075f208>] ? _spin_lock_irqsave+0x2b/0x39
>> [<c043335a>] tg_shares_up+0x134/0x1bb
>> [<c042c0d4>] ? tg_nop+0x0/0xc
>> [<c042c0c0>] walk_tg_tree+0x63/0x77
>> [<c0433226>] ? tg_shares_up+0x0/0x1bb
>> [<c04328f4>] update_shares+0x69/0x71
>> [<c04335ec>] select_task_rq_fair+0x153/0x5dc
>> [<c043b905>] try_to_wake_up+0x7f/0x28a
>> [<c043bb20>] default_wake_function+0x10/0x12
>> [<c042ce2d>] __wake_up_common+0x37/0x5e
>> [<c0430d62>] complete+0x30/0x43
>> [<c0453281>] wakeme_after_rcu+0x10/0x12
>> [<c0482997>] __rcu_process_callbacks+0x141/0x201
>> [<c0482a7c>] rcu_process_callbacks+0x25/0x44
>> [<c0445167>] __do_softirq+0xbc/0x173
>> [<c0445259>] do_softirq+0x3b/0x5f
>> [<c0445371>] irq_exit+0x3a/0x6d
>> [<c041dd82>] smp_apic_timer_interrupt+0x6d/0x7b
>> [<c0408d7b>] apic_timer_interrupt+0x2f/0x34
>> [<c0425854>] ? native_safe_halt+0xa/0xc
>> [<c040e63b>] default_idle+0x4a/0x7c
>> [<c0460b8d>] ? tick_nohz_restart_sched_tick+0x115/0x123
>> [<c0407637>] cpu_idle+0x58/0x79
>> [<c075a578>] start_secondary+0x19c/0x1a1
>> Rebooting in 1 seconds..
>>
>>
>>
>>
>>> I am not sure about tip but i am able to create the problem pretty
>>> easily on 2.6.31-rc7 with that config file.
>>>
>>> Only the changes i have done in the config file from (2.6.31-rc7) is :
>>> - Disabled KVM as it was giving me error on -tip kernel.
>>> - Applied following patch :
>>> http://www.gossamer-threads.com/lists/linux/kernel/1129527
>>>
>>> Please let me know if you are able to recreate it on -tip with
>>> following config.
>>> ------------------------------------------------------------------------
>>>
>>> _______________________________________________
>>> Containers mailing list
>>> Containers@lists.linux-foundation.org
>>> https://lists.linux-foundation.org/mailman/listinfo/containers
>>>
>>>
>> _______________________________________________
>> Containers mailing list
>> Containers@lists.linux-foundation.org
>> https://lists.linux-foundation.org/mailman/listinfo/containers
>>
>>
>
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>
On Tue, Sep 22, 2009 at 03:39:18PM +0530, Rishikesh wrote: > Hi Dhaval, > > Today i tried 2 more scenario requested by you on -tip kernel: > > 1> mount cpu on cgroup & other susbsystems ( ns, cpuset,freezer... > except cpu) on cgroup1 e.g:. > /root/lxc on /cgroup type cgroup > (rw,ns,cpuset,freezer,devices,memory,cpuacct,net_cls) > none on /cgroup1 type cgroup (rw,cpu) > > Result: I am able to create container ( no crash after "lxc-execute > ..." command execution). > 2> mount cpu,ns on cgroup > [root@x335a ~]# mount > none on /cgroup type cgroup (rw,ns,cpu) > [root@x335a ~]# lxc-execute -n foo2 -f /etc/lxc/lxc-macvlan.conf /bin/bash > > Result : The system crash with following trace once i execute > lxc-execute command: > > x335a.in.ibm.com login: BUG: NMI Watchdog detected LOCKUP on CPU1, ip > c0425854, registers: > Modules linked in: nfs lockd nfs_acl auth_rpcgss bridge stp llc bnep sco > l2cap bluetooth autofs4 sunrpc ipv6 p4_clockmod dm_multipath uinput > ata_generic pata_acpi floppy i2c_piix4 i2c_core pata_serverworks tg3 > pcspkr serio_raw mptspi mptscsih mptbase scsi_transport_spi [last > unloaded: scsi_wait_scan] > > Pid: 0, comm: swapper Not tainted (2.6.31-tip #2) eserver xSeries 335 > -[867641X]- > EIP: 0060:[<c0425854>] EFLAGS: 00000246 CPU: 1 > EIP is at native_safe_halt+0xa/0xc > EAX: f70a8000 EBX: c096f0d4 ECX: b9d8d702 EDX: 00000001 > ESI: 00000001 EDI: 00000000 EBP: f70a9f74 ESP: f70a9f74 > DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 > Process swapper (pid: 0, ti=f70a8000 task=f7086780 task.ti=f70a8000) > Stack: > f70a9f94 c040e63b f70a9f94 c0460b8d 00000001 c096f0d4 00000001 00000000 > <0> f70a9fa4 c0407637 00000001 00000000 f70a9fb0 c075a578 0602080b 00000000 > <0> 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 > Call Trace: > [<c040e63b>] ? default_idle+0x4a/0x7c > [<c0460b8d>] ? tick_nohz_restart_sched_tick+0x115/0x123 > [<c0407637>] ? cpu_idle+0x58/0x79 > [<c075a578>] ? start_secondary+0x19c/0x1a1 > Code: 89 e5 0f 1f 44 00 00 50 9d 5d c3 55 89 e5 0f 1f 44 00 00 fa 5d c3 > 55 89 e5 0f 1f 44 00 00 fb 5d c3 55 89 e5 0f 1f 44 00 00 fb f4 <5d> c3 > 55 89 e5 0f 1f 44 00 00 f4 5d c3 55 89 e5 0f 1f 44 00 00 > > > Evening i am going to try 3rd scenario: > - Enable CONFIG_PROVE_LOCKING and then execute above scenario once > again. > > Hope above result will help you to debug further. > Just tested on latest -tip and this issue is no longer reproducible. |