Hi list,

After updating from 1.8.13 to 2.0.5 (also with 2.0.10) we are seeing kernel panics on our production servers. I haven't been able to trigger them on a test server, and we rollbacked haproxy to 1.8 for now.

I am attaching a panic log, hope something useful is in there.

Anybody an idea what might be going on here?

Kind regards,

Sander Hoentjen

Dec  2 21:17:08 hostname [2409002.997008] NMI watchdog: Watchdog detected hard 
LOCKUP on cpu 12
Dec  2 21:17:08 hostname 
Dec  2 21:17:08 hostname [2409002.999146] Kernel panic - not syncing: Hard 
LOCKUP
Dec  2 21:17:08 hostname [2409003.000808] CPU: 12 PID: 3428667 Comm: haproxy 
ve: 0 Tainted: P           O   ------------   
3.10.0-962.3.2.lve1.5.26.2.el6h.x86_64 #1 61.16
Dec  2 21:17:08 hostname [2409003.004086] Hardware name: Supermicro 
SSG-6039P-E1CR16L/X11DPH-T, BIOS 3.1 05/22/2019
Dec  2 21:17:08 hostname [2409003.005737] Call Trace:
Dec  2 21:17:08 hostname [2409003.007316]  <NMI> [<ffffffffa2f45ff9>] 
dump_stack+0x19/0x1b
Dec  2 21:17:08 hostname [2409003.008894]  [<ffffffffa2f4443a>] panic+0xe6/0x21c
Dec  2 21:17:08 hostname [2409003.010512]  [<ffffffffa28954db>] 
nmi_panic+0x3b/0x40
Dec  2 21:17:08 hostname [2409003.012081]  [<ffffffffa2958daf>] 
watchdog_overflow_callback+0x11f/0x140
Dec  2 21:17:08 hostname [2409003.013649]  [<ffffffffa299aa77>] 
__perf_event_overflow+0x57/0x110
Dec  2 21:17:08 hostname [2409003.015204]  [<ffffffffa29a3dd4>] 
perf_event_overflow+0x14/0x20
Dec  2 21:17:08 hostname [2409003.016680]  [<ffffffffa280aac5>] 
intel_pmu_handle_irq+0x245/0x4f0
Dec  2 21:17:08 hostname [2409003.018200]  [<ffffffffa29fc69e>] ? 
vunmap_page_range+0x24e/0x450
Dec  2 21:17:08 hostname [2409003.019636]  [<ffffffffa2c34ec6>] ? 
ghes_copy_tofrom_phys+0x116/0x2c0
Dec  2 21:17:08 hostname [2409003.021053]  [<ffffffffa2c35110>] ? 
ghes_read_estatus+0xa0/0x190
Dec  2 21:17:08 hostname [2409003.022447]  [<ffffffffa2f4e030>] 
perf_event_nmi_handler+0x30/0x50
Dec  2 21:17:08 hostname [2409003.023867]  [<ffffffffa2f4f928>] 
nmi_handle.constprop.0+0x78/0x130
Dec  2 21:17:08 hostname [2409003.025272]  [<ffffffffa2f4fb61>] 
do_nmi+0x181/0x480
Dec  2 21:17:08 hostname [2409003.026649]  [<ffffffffa2f4ed89>] 
end_repeat_nmi+0x1e/0x81
Dec  2 21:17:08 hostname [2409003.028002]  [<ffffffffa291e9f2>] ? 
native_queued_spin_lock_slowpath+0x1d2/0x220
Dec  2 21:17:08 hostname [2409003.029297]  [<ffffffffa291e9f2>] ? 
native_queued_spin_lock_slowpath+0x1d2/0x220
Dec  2 21:17:08 hostname [2409003.030558]  [<ffffffffa291e9f2>] ? 
native_queued_spin_lock_slowpath+0x1d2/0x220
Dec  2 21:17:08 hostname [2409003.031781]  <EOE> [<ffffffffa291ebdb>] 
queued_write_lock_slowpath+0x8b/0x90
Dec  2 21:17:08 hostname [2409003.033003]  [<ffffffffa2f4ce69>] 
_raw_qwrite_lock+0x29/0x30
Dec  2 21:17:08 hostname [2409003.034228]  [<ffffffffa2891e9b>] 
tasklist_write_lock_irq+0x3b/0x50
Dec  2 21:17:08 hostname [2409003.035447]  [<ffffffffa289c872>] 
do_exit+0x452/0xac0
Dec  2 21:17:08 hostname [2409003.036647]  [<ffffffffa28c630b>] ? 
hrtimer_try_to_cancel.part.27+0x5b/0x100
Dec  2 21:17:08 hostname [2409003.037828]  [<ffffffffa289cf63>] 
do_group_exit+0x43/0xb0
Dec  2 21:17:08 hostname [2409003.038982]  [<ffffffffa28ae3dc>] 
get_signal_to_deliver+0x28c/0x630
Dec  2 21:17:08 hostname [2409003.040084]  [<ffffffffa282b4d7>] 
do_signal+0x57/0x710
Dec  2 21:17:08 hostname [2409003.041161]  [<ffffffffa2a9d627>] ? 
ep_poll+0x347/0x3d0
Dec  2 21:17:08 hostname [2409003.042210]  [<ffffffffa28c3485>] ? 
cpu_clock_sample+0x85/0xb0
Dec  2 21:17:08 hostname [2409003.043280]  [<ffffffffa28d8000>] ? 
wake_up_state+0x20/0x20
Dec  2 21:17:08 hostname [2409003.044329]  [<ffffffffa282bc02>] 
do_notify_resume+0x72/0xd0
Dec  2 21:17:08 hostname [2409003.045336]  [<ffffffffa2f585b4>] 
int_signal+0x12/0x17
Dec  2 21:17:08 hostname [2409003.059190] NMI watchdog: Watchdog detected hard 
LOCKUP on cpu 17
Dec  2 21:17:08 hostname 
Dec  2 21:17:08 hostname [2409003.059225] Modules linked in: cls_fw sch_sfq 
sch_htb kcare(O) arc4 md4 nls_utf8 cifs dns_resolver xt_comment ip6t_REJECT 
nf_reject_ipv6 ip_set_hash_ipport ip_set_hash_ip xt_set ip_set_hash_net 
nf_conntrack_ipv6 nf_defrag_ipv6 nf_log_ipv6 nf_log_ipv4 nf_log_common ip_set 
nfnetlink ip6table_filter xt_owner nf_nat_ftp xt_REDIRECT nf_nat_redirect 
xt_conntrack nf_conntrack_ftp ipt_REJECT nf_reject_ipv4 xt_LOG xt_limit 
iptable_filter xt_multiport iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 
nf_nat_ipv4 nf_nat nf_conntrack libcrc32c netconsole 8021q mrp garp stp llc 
bonding kmodlve(O) vzdev ip6table_mangle ip6_tables iptable_mangle xt_mark 
ip_tables ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm 
ib_core binfmt_misc iTCO_wdt iTCO_vendor_support pcspkr zfs(PO) zcommon(PO) 
znvpair(PO) icp(PO) spl(O) zavl(PO) zunicode(PO) ipmi_devintf ipmi_si 
ipmi_msghandler ses enclosure i2c_i801 shpchp lpc_ich joydev mei_me mei sg nfit 
libnvdimm acpi_power_meter acpi_pad acpi_cpufreq ext4 jbd2 mbcache raid1 sd_mod 
crc_t10dif crct10dif_common mpt3sas scsi_transport_sas raid_class i40e ptp 
pps_core ahci libahci libata wmi ast ttm drm_kms_helper drm i2c_algo_bit 
i2c_core dm_mirror dm_region_hash dm_log dm_mod 
Dec  2 21:17:08 hostname [2409003.070286] CPU: 17 PID: 3428639 Comm: haproxy 
ve: 0 Tainted: P           O   ------------   
3.10.0-962.3.2.lve1.5.26.2.el6h.x86_64 #1 61.16
Dec  2 21:17:08 hostname [2409003.072324] Hardware name: Supermicro 
SSG-6039P-E1CR16L/X11DPH-T, BIOS 3.1 05/22/2019
Dec  2 21:17:08 hostname [2409003.073366] Call Trace:
Dec  2 21:17:08 hostname [2409003.074367]  <NMI> 
Dec  2 21:17:08 hostname [<ffffffffa2f45ff9>] dump_stack+0x19/0x1b
Dec  2 21:17:08 hostname [2409003.075348]  [<ffffffffa2958dc1>] 
watchdog_overflow_callback+0x131/0x140
Dec  2 21:17:08 hostname [2409003.076364]  [<ffffffffa299aa77>] 
__perf_event_overflow+0x57/0x110
Dec  2 21:17:08 hostname [2409003.077337]  [<ffffffffa29a3dd4>] 
perf_event_overflow+0x14/0x20
Dec  2 21:17:08 hostname [2409003.078341]  [<ffffffffa280aac5>] 
intel_pmu_handle_irq+0x245/0x4f0
Dec  2 21:17:08 hostname [2409003.079361]  [<ffffffffa29fc69e>] ? 
vunmap_page_range+0x24e/0x450
Dec  2 21:17:08 hostname [2409003.080354]  [<ffffffffa2c34ec6>] ? 
ghes_copy_tofrom_phys+0x116/0x2c0
Dec  2 21:17:08 hostname [2409003.081364]  [<ffffffffa2c35110>] ? 
ghes_read_estatus+0xa0/0x190
Dec  2 21:17:08 hostname [2409003.082373]  [<ffffffffa2f4e030>] 
perf_event_nmi_handler+0x30/0x50
Dec  2 21:17:08 hostname [2409003.083365]  [<ffffffffa2f4f928>] 
nmi_handle.constprop.0+0x78/0x130
Dec  2 21:17:08 hostname [2409003.084333]  [<ffffffffa2f4fb61>] 
do_nmi+0x181/0x480
Dec  2 21:17:08 hostname [2409003.085312]  [<ffffffffa2f4ed89>] 
end_repeat_nmi+0x1e/0x81
Dec  2 21:17:08 hostname [2409003.086278]  [<ffffffffa291e927>] ? 
native_queued_spin_lock_slowpath+0x107/0x220
Dec  2 21:17:08 hostname [2409003.087289]  [<ffffffffa291e927>] ? 
native_queued_spin_lock_slowpath+0x107/0x220
Dec  2 21:17:08 hostname [2409003.088278]  [<ffffffffa291e927>] ? 
native_queued_spin_lock_slowpath+0x107/0x220
Dec  2 21:17:08 hostname [2409003.089254]  <EOE>  [<ffffffffa291ebdb>] 
queued_write_lock_slowpath+0x8b/0x90
Dec  2 21:17:08 hostname [2409003.090220]  [<ffffffffa2f4ce69>] 
_raw_qwrite_lock+0x29/0x30
Dec  2 21:17:08 hostname [2409003.091217]  [<ffffffffa2891e9b>] 
tasklist_write_lock_irq+0x3b/0x50
Dec  2 21:17:08 hostname [2409003.092203]  [<ffffffffa289c872>] 
do_exit+0x452/0xac0
Dec  2 21:17:08 hostname [2409003.093183]  [<ffffffffa28c630b>] ? 
hrtimer_try_to_cancel.part.27+0x5b/0x100
Dec  2 21:17:08 hostname [2409003.094205]  [<ffffffffa289cf63>] 
do_group_exit+0x43/0xb0
Dec  2 21:17:08 hostname [2409003.095176]  [<ffffffffa28ae3dc>] 
get_signal_to_deliver+0x28c/0x630
Dec  2 21:17:08 hostname [2409003.096152]  [<ffffffffa282b4d7>] 
do_signal+0x57/0x710
Dec  2 21:17:08 hostname [2409003.097120]  [<ffffffffa2a9d627>] ? 
ep_poll+0x347/0x3d0
Dec  2 21:17:08 hostname [2409003.098123]  [<ffffffffa28c3485>] ? 
cpu_clock_sample+0x85/0xb0
Dec  2 21:17:08 hostname [2409003.099083]  [<ffffffffa28c3400>] ? 
cpu_clock_sample_group+0xb0/0xb0
Dec  2 21:17:08 hostname [2409003.100076]  [<ffffffffa28d8000>] ? 
wake_up_state+0x20/0x20
Dec  2 21:17:08 hostname [2409003.101044]  [<ffffffffa282bc02>] 
do_notify_resume+0x72/0xd0
Dec  2 21:17:08 hostname [2409003.102024]  [<ffffffffa2f585b4>] 
int_signal+0x12/0x17
Dec  2 21:17:08 hostname [2409003.148597] NMI watchdog: Watchdog detected hard 
LOCKUP on cpu 5
Dec  2 21:17:08 hostname 
Dec  2 21:17:08 hostname [2409003.148645] Modules linked in: cls_fw sch_sfq 
sch_htb kcare(O) arc4 md4 nls_utf8 cifs dns_resolver xt_comment ip6t_REJECT 
nf_reject_ipv6 ip_set_hash_ipport ip_set_hash_ip xt_set ip_set_hash_net 
nf_conntrack_ipv6 nf_defrag_ipv6 nf_log_ipv6 nf_log_ipv4 nf_log_common ip_set 
nfnetlink ip6table_filter xt_owner nf_nat_ftp xt_REDIRECT nf_nat_redirect 
xt_conntrack nf_conntrack_ftp ipt_REJECT nf_reject_ipv4 xt_LOG xt_limit 
iptable_filter xt_multiport iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 
nf_nat_ipv4 nf_nat nf_conntrack libcrc32c netconsole 8021q mrp garp stp llc 
bonding kmodlve(O) vzdev ip6table_mangle ip6_tables iptable_mangle xt_mark 
ip_tables ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm 
ib_core binfmt_misc iTCO_wdt iTCO_vendor_support pcspkr zfs(PO) zcommon(PO) 
znvpair(PO) icp(PO) spl(O) zavl(PO) zunicode(PO) ipmi_devintf ipmi_si 
ipmi_msghandler ses enclosure i2c_i801 shpchp lpc_ich joydev mei_me mei sg nfit 
libnvdimm acpi_power_meter acpi_pad acpi_cpufreq ext4 jbd2 mbcache raid1 sd_mod 
crc_t10dif crct10dif_common mpt3sas scsi_transport_sas raid_class i40e ptp 
pps_core ahci libahci libata wmi ast ttm drm_kms_helper drm i2c_algo_bit 
i2c_core dm_mirror dm_region_hash dm_log dm_mod
Dec  2 21:17:08 hostname 
Dec  2 21:17:08 hostname [2409003.160602] CPU: 5 PID: 3428663 Comm: haproxy ve: 
0 Tainted: P           O   ------------   
3.10.0-962.3.2.lve1.5.26.2.el6h.x86_64 #1 61.16
Dec  2 21:17:08 hostname [2409003.162699] Hardware name: Supermicro 
SSG-6039P-E1CR16L/X11DPH-T, BIOS 3.1 05/22/2019
Dec  2 21:17:08 hostname [2409003.163735] Call Trace:
Dec  2 21:17:08 hostname [2409003.164725]  <NMI> [<ffffffffa2f45ff9>] 
dump_stack+0x19/0x1b
Dec  2 21:17:08 hostname [2409003.165727]  [<ffffffffa2958dc1>] 
watchdog_overflow_callback+0x131/0x140
Dec  2 21:17:08 hostname [2409003.166712]  [<ffffffffa299aa77>] 
__perf_event_overflow+0x57/0x110
Dec  2 21:17:08 hostname [2409003.167714]  [<ffffffffa29a3dd4>] 
perf_event_overflow+0x14/0x20
Dec  2 21:17:08 hostname [2409003.168698]  [<ffffffffa280aac5>] 
intel_pmu_handle_irq+0x245/0x4f0
Dec  2 21:17:08 hostname [2409003.169690]  [<ffffffffa29fc69e>] ? 
vunmap_page_range+0x24e/0x450
Dec  2 21:17:08 hostname [2409003.170659]  [<ffffffffa2c34ec6>] ? 
ghes_copy_tofrom_phys+0x116/0x2c0
Dec  2 21:17:08 hostname [2409003.171625]  [<ffffffffa2c35110>] ? 
ghes_read_estatus+0xa0/0x190
Dec  2 21:17:08 hostname [2409003.172627]  [<ffffffffa2f4e030>] 
perf_event_nmi_handler+0x30/0x50
Dec  2 21:17:08 hostname [2409003.173605]  [<ffffffffa2f4f928>] 
nmi_handle.constprop.0+0x78/0x130
Dec  2 21:17:08 hostname [2409003.174566]  [<ffffffffa2f4fb61>] 
do_nmi+0x181/0x480
Dec  2 21:17:08 hostname [2409003.175526]  [<ffffffffa2f4ed89>] 
end_repeat_nmi+0x1e/0x81
Dec  2 21:17:08 hostname [2409003.176524]  [<ffffffffa291e9f2>] ? 
native_queued_spin_lock_slowpath+0x1d2/0x220
Dec  2 21:17:08 hostname [2409003.177531]  [<ffffffffa291e9f2>] ? 
native_queued_spin_lock_slowpath+0x1d2/0x220
Dec  2 21:17:08 hostname [2409003.178487]  [<ffffffffa291e9f2>] ? 
native_queued_spin_lock_slowpath+0x1d2/0x220
Dec  2 21:17:08 hostname [2409003.179433]  <EOE> [<ffffffffa291ebdb>] 
queued_write_lock_slowpath+0x8b/0x90
Dec  2 21:17:08 hostname [2409003.180408]  [<ffffffffa2f4ce69>] 
_raw_qwrite_lock+0x29/0x30
Dec  2 21:17:08 hostname [2409003.181373]  [<ffffffffa2891e9b>] 
tasklist_write_lock_irq+0x3b/0x50
Dec  2 21:17:08 hostname [2409003.182373]  [<ffffffffa289c872>] 
do_exit+0x452/0xac0
Dec  2 21:17:08 hostname [2409003.183378]  [<ffffffffa28c630b>] ? 
hrtimer_try_to_cancel.part.27+0x5b/0x100
Dec  2 21:17:08 hostname [2409003.184384]  [<ffffffffa289cf63>] 
do_group_exit+0x43/0xb0
Dec  2 21:17:08 hostname [2409003.185358]  [<ffffffffa28ae3dc>] 
get_signal_to_deliver+0x28c/0x630
Dec  2 21:17:08 hostname [2409003.186346]  [<ffffffffa282b4d7>] 
do_signal+0x57/0x710
Dec  2 21:17:08 hostname [2409003.187336]  [<ffffffffa2a9d627>] ? 
ep_poll+0x347/0x3d0
Dec  2 21:17:08 hostname [2409003.188314]  [<ffffffffa28c3485>] ? 
cpu_clock_sample+0x85/0xb0
Dec  2 21:17:08 hostname [2409003.189270]  [<ffffffffa28c3640>] ? 
posix_cpu_clock_get+0x190/0x190
Dec  2 21:17:08 hostname [2409003.190225]  [<ffffffffa28d8000>] ? 
wake_up_state+0x20/0x20
Dec  2 21:17:08 hostname [2409003.191220]  [<ffffffffa282bc02>] 
do_notify_resume+0x72/0xd0
Dec  2 21:17:08 hostname [2409003.192211]  [<ffffffffa2f585b4>] 
int_signal+0x12/0x17
Dec  2 21:17:08 hostname [2409003.882222] NMI watchdog: Watchdog detected hard 
LOCKUP on cpu 35
Dec  2 21:17:08 hostname 
Dec  2 21:17:08 hostname [2409003.882256] Modules linked in: cls_fw sch_sfq 
sch_htb kcare(O) arc4 md4 nls_utf8 cifs dns_resolver xt_comment ip6t_REJECT 
nf_reject_ipv6 ip_set_hash_ipport ip_set_hash_ip xt_set ip_set_hash_net 
nf_conntrack_ipv6 nf_defrag_ipv6 nf_log_ipv6 nf_log_ipv4 nf_log_common ip_set 
nfnetlink ip6table_filter xt_owner nf_nat_ftp xt_REDIRECT nf_nat_redirect 
xt_conntrack nf_conntrack_ftp ipt_REJECT nf_reject_ipv4 xt_LOG xt_limit 
iptable_filter xt_multiport iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 
nf_nat_ipv4 nf_nat nf_conntrack libcrc32c netconsole 8021q mrp garp stp llc 
bonding kmodlve(O) vzdev ip6table_mangle ip6_tables iptable_mangle xt_mark 
ip_tables ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm 
ib_core binfmt_misc iTCO_wdt iTCO_vendor_support pcspkr zfs(PO) zcommon(PO) 
znvpair(PO) icp(PO) spl(O) zavl(PO) zunicode(PO) ipmi_devintf ipmi_si 
ipmi_msghandler ses enclosure i2c_i801 shpchp lpc_ich joydev mei_me mei sg nfit 
libnvdimm acpi_power_meter acpi_pad acpi_cpufreq ext4 jbd2 mbcache raid1 sd_mod 
crc_t10dif crct10dif_common mpt3sas scsi_transport_sas raid_class i40e ptp 
pps_core ahci libahci libata wmi ast ttm drm_kms_helper drm i2c_algo_bit 
i2c_core dm_mirror dm_region_hash dm_log dm_mod
Dec  2 21:17:08 hostname 
Dec  2 21:17:08 hostname [2409003.894343] CPU: 35 PID: 3428675 Comm: haproxy 
ve: 0 Tainted: P           O   ------------   
3.10.0-962.3.2.lve1.5.26.2.el6h.x86_64 #1 61.16
Dec  2 21:17:08 hostname [2409003.896479] Hardware name: Supermicro 
SSG-6039P-E1CR16L/X11DPH-T, BIOS 3.1 05/22/2019
Dec  2 21:17:08 hostname [2409003.897541] Call Trace:
Dec  2 21:17:08 hostname [2409003.898540]  <NMI>  [<ffffffffa2f45ff9>] 
dump_stack+0x19/0x1b
Dec  2 21:17:08 hostname [2409003.899569]  [<ffffffffa2958dc1>] 
watchdog_overflow_callback+0x131/0x140
Dec  2 21:17:08 hostname [2409003.900597]  [<ffffffffa299aa77>] 
__perf_event_overflow+0x57/0x110
Dec  2 21:17:08 hostname [2409003.901602]  [<ffffffffa29a3dd4>] 
perf_event_overflow+0x14/0x20
Dec  2 21:17:08 hostname [2409003.902599]  [<ffffffffa280aac5>] 
intel_pmu_handle_irq+0x245/0x4f0
Dec  2 21:17:08 hostname [2409003.903581]  [<ffffffffa29fc69e>] ? 
vunmap_page_range+0x24e/0x450
Dec  2 21:17:08 hostname [2409003.904595]  [<ffffffffa2c34ec6>] ? 
ghes_copy_tofrom_phys+0x116/0x2c0
Dec  2 21:17:08 hostname [2409003.905583]  [<ffffffffa2c35110>] ? 
ghes_read_estatus+0xa0/0x190
Dec  2 21:17:08 hostname [2409003.906591]  [<ffffffffa2f4e030>] 
perf_event_nmi_handler+0x30/0x50
Dec  2 21:17:08 hostname [2409003.907565]  [<ffffffffa2f4f928>] 
nmi_handle.constprop.0+0x78/0x130
Dec  2 21:17:08 hostname [2409003.908570]  [<ffffffffa2f4fb61>] 
do_nmi+0x181/0x480
Dec  2 21:17:08 hostname [2409003.909574]  [<ffffffffa2f4ed89>] 
end_repeat_nmi+0x1e/0x81
Dec  2 21:17:08 hostname [2409003.910581]  [<ffffffffa291e9f2>] ? 
native_queued_spin_lock_slowpath+0x1d2/0x220
Dec  2 21:17:08 hostname [2409003.911561]  [<ffffffffa291e9f2>] ? 
native_queued_spin_lock_slowpath+0x1d2/0x220
Dec  2 21:17:08 hostname [2409003.912562]  [<ffffffffa291e9f2>] ? 
native_queued_spin_lock_slowpath+0x1d2/0x220
Dec  2 21:17:08 hostname [2409003.913515]  <EOE>  [<ffffffffa291ebdb>] 
queued_write_lock_slowpath+0x8b/0x90
Dec  2 21:17:08 hostname [2409003.914480]  [<ffffffffa2f4ce69>] 
_raw_qwrite_lock+0x29/0x30
Dec  2 21:17:08 hostname [2409003.915488]  [<ffffffffa2891e9b>] 
tasklist_write_lock_irq+0x3b/0x50
Dec  2 21:17:08 hostname [2409003.916515]  [<ffffffffa289c872>] 
do_exit+0x452/0xac0
Dec  2 21:17:08 hostname [2409003.917492]  [<ffffffffa28c630b>] ? 
hrtimer_try_to_cancel.part.27+0x5b/0x100
Dec  2 21:17:08 hostname [2409003.918493]  [<ffffffffa289cf63>] 
do_group_exit+0x43/0xb0
Dec  2 21:17:08 hostname [2409003.919491]  [<ffffffffa28ae3dc>] 
get_signal_to_deliver+0x28c/0x630
Dec  2 21:17:08 hostname [2409003.920470]  [<ffffffffa282b4d7>] 
do_signal+0x57/0x710
Dec  2 21:17:08 hostname [2409003.921453]  [<ffffffffa2a9d627>] ? 
ep_poll+0x347/0x3d0
Dec  2 21:17:08 hostname [2409003.922418]  [<ffffffffa28c3485>] ? 
cpu_clock_sample+0x85/0xb0
Dec  2 21:17:08 hostname [2409003.923387]  [<ffffffffa28d8000>] ? 
wake_up_state+0x20/0x20
Dec  2 21:17:08 hostname [2409003.924359]  [<ffffffffa282bc02>] 
do_notify_resume+0x72/0xd0
Dec  2 21:17:08 hostname [2409003.925351]  [<ffffffffa2f585b4>] 
int_signal+0x12/0x17
Dec  2 21:17:08 hostname [2409003.933957] NMI watchdog: Watchdog detected hard 
LOCKUP on cpu 30
Dec  2 21:17:08 hostname 
Dec  2 21:17:08 hostname [2409003.933989] Modules linked in: cls_fw sch_sfq 
sch_htb kcare(O) arc4 md4 nls_utf8 cifs dns_resolver xt_comment ip6t_REJECT 
nf_reject_ipv6 ip_set_hash_ipport ip_set_hash_ip xt_set ip_set_hash_net 
nf_conntrack_ipv6 nf_defrag_ipv6 nf_log_ipv6 nf_log_ipv4 nf_log_common ip_set 
nfnetlink ip6table_filter xt_owner nf_nat_ftp xt_REDIRECT nf_nat_redirect 
xt_conntrack nf_conntrack_ftp ipt_REJECT nf_reject_ipv4 xt_LOG xt_limit 
iptable_filter xt_multiport iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 
nf_nat_ipv4 nf_nat nf_conntrack libcrc32c netconsole 8021q mrp garp stp llc 
bonding kmodlve(O) vzdev ip6table_mangle ip6_tables iptable_mangle xt_mark 
ip_tables ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm 
ib_core binfmt_misc iTCO_wdt iTCO_vendor_support pcspkr zfs(PO) zcommon(PO) 
znvpair(PO) icp(PO) spl(O) zavl(PO) zunicode(PO) ipmi_devintf ipmi_si 
ipmi_msghandler ses enclosure i2c_i801 shpchp lpc_ich joydev mei_me mei sg nfit 
libnvdimm acpi_power_meter acpi_pad acpi_cpufreq ext4 jbd2 mbcache raid1 sd_mod 
crc_t10dif crct10dif_common mpt3sas scsi_transport_sas raid_class i40e ptp 
pps_core ahci libahci libata wmi ast ttm drm_kms_helper drm i2c_algo_bit 
i2c_core dm_mirror dm_region_hash dm_log dm_mod
Dec  2 21:17:09 hostname 
Dec  2 21:17:09 hostname [2409003.946127] CPU: 30 PID: 3428642 Comm: haproxy 
ve: 0 Tainted: P           O   ------------   
3.10.0-962.3.2.lve1.5.26.2.el6h.x86_64 #1 61.16
Dec  2 21:17:09 hostname [2409003.948290] Hardware name: Supermicro 
SSG-6039P-E1CR16L/X11DPH-T, BIOS 3.1 05/22/2019
Dec  2 21:17:09 hostname [2409003.949376] Call Trace:
Dec  2 21:17:09 hostname [2409003.950396]  <NMI>  [<ffffffffa2f45ff9>] 
dump_stack+0x19/0x1b
Dec  2 21:17:09 hostname [2409003.951452]  [<ffffffffa2958dc1>] 
watchdog_overflow_callback+0x131/0x140
Dec  2 21:17:09 hostname [2409003.952490]  [<ffffffffa299aa77>] 
__perf_event_overflow+0x57/0x110
Dec  2 21:17:09 hostname [2409003.953483]  [<ffffffffa29a3dd4>] 
perf_event_overflow+0x14/0x20
Dec  2 21:17:09 hostname [2409003.954498]  [<ffffffffa280aac5>] 
intel_pmu_handle_irq+0x245/0x4f0
Dec  2 21:17:09 hostname [2409003.955515]  [<ffffffffa29fc69e>] ? 
vunmap_page_range+0x24e/0x450
Dec  2 21:17:09 hostname [2409003.956492]  [<ffffffffa2c34ec6>] ? 
ghes_copy_tofrom_phys+0x116/0x2c0
Dec  2 21:17:09 hostname [2409003.957464]  [<ffffffffa2c35110>] ? 
ghes_read_estatus+0xa0/0x190
Dec  2 21:17:09 hostname [2409003.958458]  [<ffffffffa2f4e030>] 
perf_event_nmi_handler+0x30/0x50
Dec  2 21:17:09 hostname [2409003.959459]  [<ffffffffa2f4f928>] 
nmi_handle.constprop.0+0x78/0x130
Dec  2 21:17:09 hostname [2409003.960463]  [<ffffffffa2f4fb61>] 
do_nmi+0x181/0x480
Dec  2 21:17:09 hostname [2409003.961464]  [<ffffffffa2f4ed89>] 
end_repeat_nmi+0x1e/0x81
Dec  2 21:17:09 hostname [2409003.962449]  [<ffffffffa291e9f5>] ? 
native_queued_spin_lock_slowpath+0x1d5/0x220
Dec  2 21:17:09 hostname [2409003.963446]  [<ffffffffa291e9f5>] ? 
native_queued_spin_lock_slowpath+0x1d5/0x220
Dec  2 21:17:09 hostname [2409003.964412]  [<ffffffffa291e9f5>] ? 
native_queued_spin_lock_slowpath+0x1d5/0x220
Dec  2 21:17:09 hostname [2409003.965378]  <EOE>  [<ffffffffa291ebdb>] 
queued_write_lock_slowpath+0x8b/0x90
Dec  2 21:17:09 hostname [2409003.966363]  [<ffffffffa2f4ce69>] 
_raw_qwrite_lock+0x29/0x30
Dec  2 21:17:09 hostname [2409003.967321]  [<ffffffffa2891e9b>] 
tasklist_write_lock_irq+0x3b/0x50
Dec  2 21:17:09 hostname [2409003.968315]  [<ffffffffa289c872>] 
do_exit+0x452/0xac0
Dec  2 21:17:09 hostname [2409003.969336]  [<ffffffffa28c630b>] ? 
hrtimer_try_to_cancel.part.27+0x5b/0x100
Dec  2 21:17:09 hostname [2409003.970322]  [<ffffffffa289cf63>] 
do_group_exit+0x43/0xb0
Dec  2 21:17:09 hostname [2409003.971296]  [<ffffffffa28ae3dc>] 
get_signal_to_deliver+0x28c/0x630
Dec  2 21:17:09 hostname [2409003.972277]  [<ffffffffa282b4d7>] 
do_signal+0x57/0x710
Dec  2 21:17:09 hostname [2409003.973281]  [<ffffffffa2a9d627>] ? 
ep_poll+0x347/0x3d0
Dec  2 21:17:09 hostname [2409003.974256]  [<ffffffffa28c3485>] ? 
cpu_clock_sample+0x85/0xb0
Dec  2 21:17:09 hostname [2409003.975227]  [<ffffffffa28d8000>] ? 
wake_up_state+0x20/0x20
Dec  2 21:17:09 hostname [2409003.976198]  [<ffffffffa282bc02>] 
do_notify_resume+0x72/0xd0
Dec  2 21:17:09 hostname [2409003.977174]  [<ffffffffa2f585b4>] 
int_signal+0x12/0x17
Dec  2 21:17:09 hostname [2409004.089821] Shutting down cpus with NMI
Dec  2 21:17:09 hostname [2409004.101232] Kernel Offset: 0x21800000 from 
0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Dec  2 21:17:09 hostname [2409004.194444] Rebooting in 30 seconds..
Dec  2 21:17:39 hostname 
Dec  2 21:17:39 hostname [2409034.186961] ACPI MEMORY or I/O RESET_REG.

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