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<div class="moz-cite-prefix">your fix looks good to me, but can you
please submit the patch alone in a nice formatted way.<br>
<br>
<br>
On 07/27/2013 02:29 AM, Guozhonghua wrote:<br>
</div>
<blockquote
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<p class="MsoPlainText"><span lang="EN-US">Hi everyone,</span></p>
<p class="MsoPlainText"><span lang="EN-US"> </span></p>
<p class="MsoPlainText"><span lang="EN-US">The is an null
pointer issue, sometime may cause the host blocked.</span></p>
<p class="MsoPlainText"><span lang="EN-US"> </span></p>
<p class="MsoPlainText"><span lang="EN-US">The diff file is as
below: </span></p>
<p class="MsoPlainText"><span lang="EN-US">---
/ocfs2-ko-3.2/cluster/tcp.c</span></p>
<p class="MsoPlainText"><span lang="EN-US">+++
/ocfs2-ko-3.2/cluster/tcp.c</span></p>
<p class="MsoPlainText"><span lang="EN-US">@@ -1700,13 +1700,14
@@</span></p>
<p class="MsoPlainText"><span lang="EN-US"> ret =
0;</span></p>
<p class="MsoPlainText"><span lang="EN-US"></span></p>
<p class="MsoPlainText"><span lang="EN-US"> out:</span></p>
<p class="MsoPlainText"><span lang="EN-US">- if (ret) {</span></p>
<p class="MsoPlainText"><span lang="EN-US">-
printk(KERN_NOTICE "o2net: Connect attempt to " SC_NODEF_FMT</span></p>
<p class="MsoPlainText"><span lang="EN-US">-
" failed with errno %d\n", SC_NODEF_ARGS(sc), ret);</span></p>
<p class="MsoPlainText"><span lang="EN-US">+ if (ret)
{ </span></p>
<p class="MsoPlainText"><span lang="EN-US"> /* 0
err so that another will be queued and attempted</span></p>
<p class="MsoPlainText"><span lang="EN-US"> * from
set_nn_state */</span></p>
<p class="MsoPlainText"><span lang="EN-US">- if
(sc)</span></p>
<p class="MsoPlainText"><span lang="EN-US">+ if
(sc) {</span></p>
<p class="MsoPlainText"><span lang="EN-US">+
printk(KERN_NOTICE "o2net: Connect attempt to " SC_NODEF_FMT</span></p>
<p class="MsoPlainText"><span lang="EN-US">+
" failed with errno %d\n", SC_NODEF_ARGS(sc), ret);</span></p>
<p class="MsoPlainText"><span lang="EN-US">
o2net_ensure_shutdown(nn, sc, 0);</span></p>
<p class="MsoPlainText"><span lang="EN-US">+ }</span></p>
<p class="MsoPlainText"><span lang="EN-US"> }</span></p>
<p class="MsoPlainText"><span lang="EN-US"> if (sc)</span></p>
<p class="MsoPlainText"><span lang="EN-US">
sc_put(sc);</span></p>
<p class="MsoPlainText"><span lang="EN-US"> </span></p>
<p class="MsoPlainText"><span lang="EN-US"> </span></p>
<p class="MsoPlainText"><span lang="EN-US">As we test it, the
back trace log of this issue is as below:
</span></p>
<p class="MsoPlainText"><span lang="EN-US"> </span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:01
Server20 CRON[30615]: (root) CMD (
/opt/bin/tomcat_check.sh)</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969110]
(kworker/u:2,18202,0):sc_alloc:446 ERROR: status = -2</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969133] BUG: unable to handle kernel
NULL pointer dereference at 0000000000000010</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969141] IP:
[<ffffffffa0570658>] o2net_start_connect+0x1c8/0x500
[ocfs2_nodemanager]</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969156] PGD 0
</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969160] Oops: 0000 [#1] SMP
</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969164] CPU 0
</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969166] Modules linked in: ocfs2(O)
quota_tree ocfs2_dlmfs(O) ocfs2_stack_o2cb(O) ocfs2_dlm(O)
ocfs2_nodemanager(O) ocfs2_stackglue(O) configfs ib_iser
rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi drbd lru_cache
ip6table_filter ip6_tables iptable_filter ip_tables
ebtable_nat ebtables x_tables 8021q garp stp kvm_intel kvm
openvswitch_mod(O) vesafb nfsd nfs lockd fscache auth_rpcgss
nfs_acl radeon sunrpc ttm drm_kms_helper psmouse drm
serio_raw joydev i2c_algo_bit i7core_edac dm_multipath
mac_hid edac_core hpilo acpi_power_meter lp parport usbhid
hid qla2xxx scsi_transport_fc scsi_tgt bnx2 be2net hpsa
[last unloaded: scsi_transport_iscsi]</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969246]
</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969250] Pid: 18202, comm:
kworker/u:2 Tainted: G O 3.2.0-23-generic
#36-Ubuntu HP ProLiant DL360 G7</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969258] RIP:
0010:[<ffffffffa0570658>] [<ffffffffa0570658>]
o2net_start_connect+0x1c8/0x500 [ocfs2_nodemanager]</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969270] RSP: 0018:ffff8803ddccdd60
EFLAGS: 00010246</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969275] RAX: 0000000000000000 RBX:
ffffffffa057a828 RCX: 00000000000f5956</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969281] RDX: 00000000000f5955 RSI:
0000000000016660 RDI: ffff88040f802a00</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969286] RBP: ffff8803ddccde00 R08:
ffffea00100ed700 R09: ffffffffa0570340</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969291] R10: 00000000fffffff4 R11:
0000000000000000 R12: ffff8808045e0400</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969296] R13: ffff8808045e1400 R14:
ffffffffa057a7c0 R15: 0000000000000000</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969302] FS: 0000000000000000(0000)
GS:ffff88040fc00000(0000) knlGS:0000000000000000</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969309] CS: 0010 DS: 0000 ES: 0000
CR0: 000000008005003b</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969314] CR2: 0000000000000010 CR3:
0000000001c05000 CR4: 00000000000006f0</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969319] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969324] DR3: 0000000000000000 DR6:
00000000ffff0ff0 DR7: 0000000000000400</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969330] Process kworker/u:2 (pid:
18202, threadinfo ffff8803ddccc000, task ffff8804052f8000)</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969336] Stack:</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969339] ffff8803ddccdda0
00000001010b3279 ffff8803ddccddd0 ffffffff810126e5</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969349] ffff8803ddccdd90
ffffffff8165c46e 0000000000000000 0000000000000000</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969359] ffff8803ddccddd0
0000000000000000 0000000000000000 0000000000000000</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969368] Call Trace:</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969377] [<ffffffff810126e5>]
? __switch_to+0xf5/0x360</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969385] [<ffffffff8165c46e>]
? _raw_spin_lock+0xe/0x20</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969396] [<ffffffffa0570490>]
? sc_alloc+0x2a0/0x2a0 [ocfs2_nodemanager]</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969404] [<ffffffff81084e2a>]
process_one_work+0x11a/0x480</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969411] [<ffffffff81085bd4>]
worker_thread+0x164/0x370</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969418] [<ffffffff81085a70>]
? manage_workers.isra.29+0x130/0x130</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969425] [<ffffffff8108a42c>]
kthread+0x8c/0xa0</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969432] [<ffffffff81666bf4>]
kernel_thread_helper+0x4/0x10</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969439] [<ffffffff8108a3a0>]
? flush_kthread_worker+0xa0/0xa0</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969445] [<ffffffff81666bf0>]
? gs_change+0x13/0x13</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969449] Code: 8f 01 00 00 48 b8 01
00 00 00 00 00 00 10 48 85 05 7e 7d 00 00 74 14 48 85 05 b5
9c 00 00 0f 84 e1 02 00 00 0f 1f 80 00 00 00 00 <49>
8b 77 10 31 c0 45 89 d1 48 c7 c7 b0 69 57 a0 44 0f b7 86 a0
</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969498] RIP
[<ffffffffa0570658>] o2net_start_connect+0x1c8/0x500
[ocfs2_nodemanager]</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969510] RSP
<ffff8803ddccdd60></span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.969513] CR2: 0000000000000010</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981144] ---[ end trace
8f56ad2a8a729411 ]---</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981178] BUG: unable to handle kernel
paging request at fffffffffffffff8</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981189] IP:
[<ffffffff8108a8c1>] kthread_data+0x11/0x20</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981200] PGD 1c07067 PUD 1c08067 PMD
0
</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981210] Oops: 0000 [#2] SMP
</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981218] CPU 0
</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981222] Modules linked in: ocfs2(O)
quota_tree ocfs2_dlmfs(O) ocfs2_stack_o2cb(O) ocfs2_dlm(O)
ocfs2_nodemanager(O) ocfs2_stackglue(O) configfs ib_iser
rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi drbd lru_cache
ip6table_filter ip6_tables iptable_filter ip_tables
ebtable_nat ebtables x_tables 8021q garp stp kvm_intel kvm
openvswitch_mod(O) vesafb nfsd nfs lockd fscache auth_rpcgss
nfs_acl radeon sunrpc ttm drm_kms_helper psmouse drm
serio_raw joydev i2c_algo_bit i7core_edac dm_multipath
mac_hid edac_core hpilo acpi_power_meter lp parport usbhid
hid qla2xxx scsi_transport_fc scsi_tgt bnx2 be2net hpsa
[last unloaded: scsi_transport_iscsi]</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981374]
</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981379] Pid: 18202, comm:
kworker/u:2 Tainted: G D O 3.2.0-23-generic
#36-Ubuntu HP ProLiant DL360 G7</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981393] RIP:
0010:[<ffffffff8108a8c1>] [<ffffffff8108a8c1>]
kthread_data+0x11/0x20</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981405] RSP: 0018:ffff8803ddccd9b0
EFLAGS: 00010096</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981413] RAX: 0000000000000000 RBX:
0000000000000000 RCX: 0000000000000000</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981421] RDX: 0000000000000000 RSI:
0000000000000000 RDI: ffff8804052f8000</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981429] RBP: ffff8803ddccd9c8 R08:
0000000000989680 R09: 0000000000000000</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981437] R10: 0000000000000000 R11:
0000000000000000 R12: 0000000000000000</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981445] R13: ffff8804052f83c8 R14:
0000000000000000 R15: 0000000000000246</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981453] FS: 0000000000000000(0000)
GS:ffff88040fc00000(0000) knlGS:0000000000000000</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981463] CS: 0010 DS: 0000 ES: 0000
CR0: 000000008005003b</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981470] CR2: fffffffffffffff8 CR3:
0000000001c05000 CR4: 00000000000006f0</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981478] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981486] DR3: 0000000000000000 DR6:
00000000ffff0ff0 DR7: 0000000000000400</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981494] Process kworker/u:2 (pid:
18202, threadinfo ffff8803ddccc000, task ffff8804052f8000)</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981504] Stack:</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981508] ffffffff81086135
ffff8803ddccd9c8 ffff88040fc13780 ffff8803ddccda48</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981527] ffffffff8165a117
ffff8803ddccda08 ffff8804052f8000 ffff8803ddccdfd8</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981545] ffff8803ddccdfd8
ffff8803ddccdfd8 0000000000013780 ffff8803ddccda38</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981563] Call Trace:</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981571] [<ffffffff81086135>]
? wq_worker_sleeping+0x15/0xa0</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981582] [<ffffffff8165a117>]
__schedule+0x5d7/0x6f0</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981590] [<ffffffff8165a55f>]
schedule+0x3f/0x60</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981601] [<ffffffff8106bafb>]
do_exit+0x26b/0x420</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981611] [<ffffffff8165d620>]
oops_end+0xb0/0xf0</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981621] [<ffffffff81642ebd>]
no_context+0x150/0x15d</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981630] [<ffffffff81643093>]
__bad_area_nosemaphore+0x1c9/0x1e8</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981640] [<ffffffff8103dbb9>]
? default_spin_lock_flags+0x9/0x10</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981650] [<ffffffff816430c5>]
bad_area_nosemaphore+0x13/0x15</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981661] [<ffffffff81660276>]
do_page_fault+0x426/0x520</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981671] [<ffffffff81067a05>]
? console_unlock+0x135/0x180</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981682] [<ffffffff811971e5>]
? mntput_no_expire+0xa5/0xf0</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981688] [<ffffffff8165cbf5>]
page_fault+0x25/0x30</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981699] [<ffffffffa0570340>]
? sc_alloc+0x150/0x2a0 [ocfs2_nodemanager]</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981709] [<ffffffffa0570658>]
? o2net_start_connect+0x1c8/0x500 [ocfs2_nodemanager]</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981718] [<ffffffff810126e5>]
? __switch_to+0xf5/0x360</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981724] [<ffffffff8165c46e>]
? _raw_spin_lock+0xe/0x20</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981734] [<ffffffffa0570490>]
? sc_alloc+0x2a0/0x2a0 [ocfs2_nodemanager]</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981741] [<ffffffff81084e2a>]
process_one_work+0x11a/0x480</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981748] [<ffffffff81085bd4>]
worker_thread+0x164/0x370</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981754] [<ffffffff81085a70>]
? manage_workers.isra.29+0x130/0x130</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981761] [<ffffffff8108a42c>]
kthread+0x8c/0xa0</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981767] [<ffffffff81666bf4>]
kernel_thread_helper+0x4/0x10</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981773] [<ffffffff8108a3a0>]
? flush_kthread_worker+0xa0/0xa0</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981780] [<ffffffff81666bf0>]
? gs_change+0x13/0x13</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981783] Code: 41 5f 5d c3 be 3e 01
00 00 48 c7 c7 80 9a a0 81 e8 c5 c8 fd ff e9 74 fe ff ff 55
48 89 e5 66 66 66 66 90 48 8b 87 70 03 00 00 5d <48>
8b 40 f8 c3 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 66 66
</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981832] RIP
[<ffffffff8108a8c1>] kthread_data+0x11/0x20</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981839] RSP
<ffff8803ddccd9b0></span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981842] CR2: fffffffffffffff8</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981846] ---[ end trace
8f56ad2a8a729412 ]---</span></p>
<p class="MsoPlainText"><span lang="EN-US">Jul 24 10:14:57
Server20 kernel: [70163.981849] Fixing recursive fault but
reboot is needed!</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
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