Public bug reported:
Machine will respond to ping and I can log in with ssh, but pretty much
everything else ("top" for example) doesn't work, type in the command and hit
return and nothing happens. kern.log just repeats the following;
(all the machine is doing is running two CENTOS VM's under KVM - this is an
up-to-date 12.04 system)
May 12 18:06:12 sh-thn-1 kernel: [435412.064004] BUG: soft lockup - CPU#0 stuck
for 23s! [sshd:29633]
May 12 18:06:12 sh-thn-1 kernel: [435412.064084] Modules linked in: nbd
ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE iptable_nat
nf_nat ipt_REJECT xt_CHECKSUM iptable_mangle kvm_amd kvm nf_conntrack_ftp
nf_conntrack_irc ipt_LOG xt_limit xt_tcpudp xt_state nf_conntrack_ipv4
nf_conntrack nf_defrag_ipv4 iptable_filter ip_tables x_tables dm_crypt nfsd nfs
lockd fscache auth_rpcgss nfs_acl sunrpc ext2 bridge snd_hda_codec_hdmi stp
snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_timer
snd sp5100_tco soundcore shpchp dm_multipath snd_page_alloc psmouse edac_core
edac_mce_amd k10temp joydev i2c_piix4 serio_raw sk98lin(O) asus_atk0110 mac_hid
zfs(P) zcommon(P) znvpair(P) zavl(P) zunicode(P) spl(O) zlib_deflate multipath
linear raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq
async_tx raid0 raid1 lp parport raid10 usbhid hid radeon ttm drm_kms_helper
r8169 pata_atiixp drm i2c_algo_bit pata_jmicron wmi usb_storage
May 12 18:06:12 sh-thn-1 kernel: [435412.064117] CPU 0
May 12 18:06:12 sh-thn-1 kernel: [435412.064118] Modules linked in: nbd
ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE iptable_nat
nf_nat ipt_REJECT xt_CHECKSUM iptable_mangle kvm_amd kvm nf_conntrack_ftp
nf_conntrack_irc ipt_LOG xt_limit xt_tcpudp xt_state nf_conntrack_ipv4
nf_conntrack nf_defrag_ipv4 iptable_filter ip_tables x_tables dm_crypt nfsd nfs
lockd fscache auth_rpcgss nfs_acl sunrpc ext2 bridge snd_hda_codec_hdmi stp
snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_timer
snd sp5100_tco soundcore shpchp dm_multipath snd_page_alloc psmouse edac_core
edac_mce_amd k10temp joydev i2c_piix4 serio_raw sk98lin(O) asus_atk0110 mac_hid
zfs(P) zcommon(P) znvpair(P) zavl(P) zunicode(P) spl(O) zlib_deflate multipath
linear raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq
async_tx raid0 raid1 lp parport raid10 usbhid hid radeon ttm drm_kms_helper
r8169 pata_atiixp drm i2c_algo_bit pata_jmicron wmi usb_storage
May 12 18:06:12 sh-thn-1 kernel: [435412.064150]
May 12 18:06:12 sh-thn-1 kernel: [435412.064151] Pid: 29633, comm: sshd
Tainted: P O 3.2.0-24-generic #37-Ubuntu System manufacturer System
Product Name/M4A89GTD-PRO
May 12 18:06:12 sh-thn-1 kernel: [435412.064154] RIP: 0010:[<ffffffff8103db20>]
[<ffffffff8103db20>] __ticket_spin_lock+0x20/0x30
May 12 18:06:12 sh-thn-1 kernel: [435412.064156] RSP: 0018:ffff8803b1bb1c88
EFLAGS: 00000206
May 12 18:06:12 sh-thn-1 kernel: [435412.064158] RAX: 0000000000000403 RBX:
ffff88042dffb000 RCX: 00000000000000b0
May 12 18:06:12 sh-thn-1 kernel: [435412.064159] RDX: 0000000000000003 RSI:
ffff8801eb65c740 RDI: ffffea000d95bdf0
May 12 18:06:12 sh-thn-1 kernel: [435412.064160] RBP: ffff8803b1bb1c88 R08:
00007ff95d01f000 R09: 0000000000000000
May 12 18:06:12 sh-thn-1 kernel: [435412.064162] R10: 0000000000000004 R11:
0000000000000000 R12: 0200000000080008
May 12 18:06:12 sh-thn-1 kernel: [435412.064163] R13: 0000000000000000 R14:
ffffea000c9675c0 R15: ffff8803b1bb1c08
May 12 18:06:12 sh-thn-1 kernel: [435412.064165] FS: 00007ff96321e7c0(0000)
GS:ffff88042dc00000(0000) knlGS:0000000000000000
May 12 18:06:12 sh-thn-1 kernel: [435412.064167] CS: 0010 DS: 0000 ES: 0000
CR0: 0000000080050033
May 12 18:06:12 sh-thn-1 kernel: [435412.064168] CR2: 00007ff95d220258 CR3:
0000000317f5f000 CR4: 00000000000006f0
May 12 18:06:12 sh-thn-1 kernel: [435412.064169] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
May 12 18:06:12 sh-thn-1 kernel: [435412.064171] DR3: 0000000000000000 DR6:
00000000ffff0ff0 DR7: 0000000000000400
May 12 18:06:12 sh-thn-1 kernel: [435412.064172] Process sshd (pid: 29633,
threadinfo ffff8803b1bb0000, task ffff8803fd8c2de0)
May 12 18:06:12 sh-thn-1 kernel: [435412.064173] Stack:
May 12 18:06:12 sh-thn-1 kernel: [435412.064200] ffff8803b1bb1c98
ffffffff8165c46e ffff8803b1bb1d48 ffffffff8113c329
May 12 18:06:12 sh-thn-1 kernel: [435412.064203] 00007ff95d220258
0000000000000001 ffff8803b1bb1ce8 ffffffff810448dc
May 12 18:06:12 sh-thn-1 kernel: [435412.064205] ffffea000844ddb0
ffff8803fd8c2de0 ffff88019114e8f0 ffff8801eb65c740
May 12 18:06:12 sh-thn-1 kernel: [435412.064208] Call Trace:
May 12 18:06:12 sh-thn-1 kernel: [435412.066211] [<ffffffff8165c46e>]
_raw_spin_lock+0xe/0x20
May 12 18:06:12 sh-thn-1 kernel: [435412.066213] [<ffffffff8113c329>]
zap_pte_range+0xb9/0x3c0
May 12 18:06:12 sh-thn-1 kernel: [435412.066215] [<ffffffff810448dc>] ?
ptep_set_access_flags+0x6c/0x70
May 12 18:06:12 sh-thn-1 kernel: [435412.066217] [<ffffffff8113c7da>]
unmap_page_range+0x1aa/0x300
May 12 18:06:12 sh-thn-1 kernel: [435412.066219] [<ffffffff8113ceba>]
unmap_vmas+0xca/0x160
May 12 18:06:12 sh-thn-1 kernel: [435412.066221] [<ffffffff81141a09>]
unmap_region+0xb9/0x130
May 12 18:06:12 sh-thn-1 kernel: [435412.066223] [<ffffffff813117ed>] ?
__rb_erase_color+0x11d/0x1c0
May 12 18:06:12 sh-thn-1 kernel: [435412.066225] [<ffffffff8131195e>] ?
rb_erase+0xce/0x150
May 12 18:06:12 sh-thn-1 kernel: [435412.066227] [<ffffffff81141542>] ?
detach_vmas_to_be_unmapped+0x92/0xe0
May 12 18:06:12 sh-thn-1 kernel: [435412.066230] [<ffffffff81142c45>]
do_munmap+0x295/0x2f0
May 12 18:06:12 sh-thn-1 kernel: [435412.066232] [<ffffffff81144333>]
sys_munmap+0x53/0x80
May 12 18:06:12 sh-thn-1 kernel: [435412.066234] [<ffffffff81664a82>]
system_call_fastpath+0x16/0x1b
May 12 18:06:12 sh-thn-1 kernel: [435412.066235] Code: 90 90 90 90 90 90 90 90
90 90 90 55 b8 00 00 01 00 48 89 e5 f0 0f c1 07 89 c2 c1 ea 10 66 39 c2 74 13
66 0f 1f 84 00 00 00 00 00 <f3> 90 0f b7 07 66 39 d0 75 f6 5d c3 0f 1f 40 00 8b
17 55 31 c0
May 12 18:06:12 sh-thn-1 kernel: [435412.068000] Call Trace:
May 12 18:06:12 sh-thn-1 kernel: [435412.068000] [<ffffffff8165c46e>]
_raw_spin_lock+0xe/0x20
May 12 18:06:12 sh-thn-1 kernel: [435412.068000] [<ffffffff8113c329>]
zap_pte_range+0xb9/0x3c0
May 12 18:06:12 sh-thn-1 kernel: [435412.068000] [<ffffffff810448dc>] ?
ptep_set_access_flags+0x6c/0x70
May 12 18:06:12 sh-thn-1 kernel: [435412.068000] [<ffffffff8113c7da>]
unmap_page_range+0x1aa/0x300
May 12 18:06:12 sh-thn-1 kernel: [435412.068000] [<ffffffff8113ceba>]
unmap_vmas+0xca/0x160
May 12 18:06:12 sh-thn-1 kernel: [435412.068000] [<ffffffff81141a09>]
unmap_region+0xb9/0x130
May 12 18:06:12 sh-thn-1 kernel: [435412.068000] [<ffffffff813117ed>] ?
__rb_erase_color+0x11d/0x1c0
May 12 18:06:12 sh-thn-1 kernel: [435412.068000] [<ffffffff8131195e>] ?
rb_erase+0xce/0x150
May 12 18:06:12 sh-thn-1 kernel: [435412.068000] [<ffffffff81141542>] ?
detach_vmas_to_be_unmapped+0x92/0xe0
May 12 18:06:12 sh-thn-1 kernel: [435412.068000] [<ffffffff81142c45>]
do_munmap+0x295/0x2f0
May 12 18:06:12 sh-thn-1 kernel: [435412.068000] [<ffffffff81144333>]
sys_munmap+0x53/0x80
May 12 18:06:12 sh-thn-1 kernel: [435412.068000] [<ffffffff81664a82>]
system_call_fastpath+0x16/0x1b
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/998720
Title:
Kernel lockup __ticket_spin_lock
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