On 12.01.2012 20:36, Akemi Yagi wrote:
On Thu, Jan 12, 2012 at 10:53 AM, Morten Stevens
<[email protected]> wrote:
Hi,
After updating to 6.2 I see the following error on two different
systems:
Both servers are running as KVM hypvervisor with multiple linux
guests.
System 1)
Jan 12 00:30:35 kvm-001 kernel: ------------[ cut here ]------------
Jan 12 00:30:35 kvm-001 kernel: WARNING: at kernel/sched.c:5914
thread_return+0x232/0x79d() (Not tainted)
System 2)
Jan 11 23:36:47 kvm-002 kernel: ------------[ cut here ]------------
Jan 11 23:36:47 kvm-002 kernel: WARNING: at kernel/sched.c:5914
thread_return+0x232/0x79d() (Not tainted)
Any ideas?
Maybe related to this:
https://bugzilla.redhat.com/show_bug.cgi?id=770228
Hi Akemi,
Yes, you're right.
I see the same bug on kvm guests with kernel 2.6.32-220.2.1.
For example:
Jan 12 18:10:58 mail kernel: ------------[ cut here ]------------
Jan 12 18:10:58 mail kernel: WARNING: at kernel/sched.c:5914
thread_return+0x232/0x79d() (Not tainted)
Jan 12 18:10:58 mail kernel: Hardware name: KVM
Jan 12 18:10:58 mail kernel: Modules linked in: xt_multiport ipt_REJECT
nf_conntrack_ipv4 nf_defrag_ipv4 iptable_filter ip_tables ip6t_REJECT
nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter
ip6_tables ipv6 virtio_balloon virtio_net i2c_piix4 i2c_core sg ext4
mbcache jbd2 virtio_blk sr_mod cdrom virtio_pci virtio_ring virtio
pata_acpi ata_generic ata_piix dm_mod [last unloaded: scsi_wait_scan]
Jan 12 18:10:58 mail kernel: Pid: 19535, comm: imap-login Not tainted
2.6.32-220.2.1.el6.x86_64 #1
Jan 12 18:10:58 mail kernel: Call Trace:
Jan 12 18:10:58 mail kernel: [<ffffffff81069997>] ?
warn_slowpath_common+0x87/0xc0
Jan 12 18:10:58 mail kernel: [<ffffffff810699ea>] ?
warn_slowpath_null+0x1a/0x20
Jan 12 18:10:58 mail kernel: [<ffffffff814eccc5>] ?
thread_return+0x232/0x79d
Jan 12 18:10:58 mail kernel: [<ffffffff814ed902>] ?
schedule_timeout+0x192/0x2e0
Jan 12 18:10:58 mail kernel: [<ffffffff8107c020>] ?
process_timeout+0x0/0x10
Jan 12 18:10:58 mail kernel: [<ffffffff811b9b59>] ?
sys_epoll_wait+0x239/0x300
Jan 12 18:10:58 mail kernel: [<ffffffff8105e770>] ?
default_wake_function+0x0/0x20
Jan 12 18:10:58 mail kernel: [<ffffffff8100b0f2>] ?
system_call_fastpath+0x16/0x1b
Jan 12 18:10:58 mail kernel: ---[ end trace f10d5daaadbce260 ]---
Jan 12 17:58:07 acsinet20 kernel: ------------[ cut here ]------------
Jan 12 17:58:07 acsinet20 kernel: WARNING: at kernel/sched.c:5914
thread_return+0x232/0x79d() (Not tainted)
Jan 12 17:58:07 acsinet20 kernel: Hardware name: KVM
Jan 12 17:58:07 acsinet20 kernel: Modules linked in: ipt_REJECT
nf_conntrack_ipv4 nf_defrag_ipv4 iptable_filter ip_tables ip6t_REJECT
nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter
ip6_tables ipv6 virtio_balloon virtio_net i2c_piix4 i2c_core sg ext4
mbcache jbd2 virtio_blk sr_mod cdrom virtio_pci virtio_ring virtio
pata_acpi ata_generic ata_piix dm_mod [last unloaded: scsi_wait_scan]
Jan 12 17:58:07 acsinet20 kernel: Pid: 1268, comm: fail2ban-server Not
tainted 2.6.32-220.2.1.el6.x86_64 #1
Jan 12 17:58:07 acsinet20 kernel: Call Trace:
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff81069997>] ?
warn_slowpath_common+0x87/0xc0
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff810699ea>] ?
warn_slowpath_null+0x1a/0x20
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff814eccc5>] ?
thread_return+0x232/0x79d
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff810958e3>] ?
__hrtimer_start_range_ns+0x1a3/0x460
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff81094dc1>] ?
lock_hrtimer_base+0x31/0x60
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff8103840c>] ?
pvclock_clocksource_read+0x5c/0xd0
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff814ee498>] ?
schedule_hrtimeout_range+0xc8/0x160
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff81094b70>] ?
hrtimer_wakeup+0x0/0x30
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff81095bd4>] ?
hrtimer_start_range_ns+0x14/0x20
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff8118b079>] ?
poll_schedule_timeout+0x39/0x60
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff8118b6e8>] ?
do_select+0x578/0x6b0
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff8100bc4e>] ?
invalidate_interrupt0+0xe/0x20
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff8118b820>] ?
__pollwait+0x0/0xf0
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff81030168>] ?
flat_send_IPI_mask+0x68/0x90
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff81047cf8>] ?
flush_tlb_others_ipi+0x128/0x130
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff81047d76>] ?
native_flush_tlb_others+0x76/0x90
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff8126a491>] ?
cpumask_any_but+0x31/0x50
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff81047e88>] ?
flush_tlb_page+0x48/0xb0
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff81046e6d>] ?
ptep_set_access_flags+0x6d/0x70
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff8113ac0b>] ?
do_wp_page+0x44b/0x8d0
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff8113b86d>] ?
handle_pte_fault+0x2cd/0xb50
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff8100bc0e>] ?
apic_timer_interrupt+0xe/0x20
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff8100bc0e>] ?
apic_timer_interrupt+0xe/0x20
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff8118c30a>] ?
core_sys_select+0x18a/0x2c0
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff8113c2d4>] ?
handle_mm_fault+0x1e4/0x2b0
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff810dea2e>] ?
call_rcu+0xe/0x10
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff81038408>] ?
pvclock_clocksource_read+0x58/0xd0
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff81038408>] ?
pvclock_clocksource_read+0x58/0xd0
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff8103750c>] ?
kvm_clock_read+0x1c/0x20
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff81037519>] ?
kvm_clock_get_cycles+0x9/0x10
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff8109b629>] ?
ktime_get_ts+0xa9/0xe0
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff8118c697>] ?
sys_select+0x47/0x110
Jan 12 17:58:07 acsinet20 kernel: [<ffffffff8100b0f2>] ?
system_call_fastpath+0x16/0x1b
Jan 12 17:58:07 acsinet20 kernel: ---[ end trace 3d099e90a36a28d0 ]---
Best regards,
Morten
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