It looks like this does not happen on an AMD CPU but it does happen on
the following HW:
description: Rack Mount Chassis
product: ProLiant DL380p Gen8 (653200-B21)
vendor: HP
serial: xxxxxxxxxxxxxxxxxxxxxxxx
width: 64 bits
capabilities: smbios-2.7 dmi-2.7 vsyscall32
configuration: boot=normal chassis=rackmount family=ProLiant sku=653200-B21
uuid=36353332-3030-435A-3233-35303xxxxxxxxx
*-core
description: Motherboard
physical id: 0
*-firmware
description: BIOS
vendor: HP
physical id: 0
version: P70
date: 09/18/2013
size: 64KiB
capacity: 8128KiB
capabilities: pci pnp upgrade shadowing escd cdboot bootselect edd
int13floppy360 int13floppy1200 int13floppy720 int5printscreen int9keyboard
int14serial int17printer int10video acpi usb biosbootspecification netboot
*-cpu:0
description: CPU
product: Intel(R) Xeon(R) CPU E5-2667 v2 @ 3.30GHz
vendor: Intel Corp.
physical id: 400
bus info: cpu@0
version: Intel(R) Xeon(R) CPU E5-2667 v2 @ 3.30GHz
slot: Proc 1
size: 1200MHz
capacity: 1200MHz
width: 64 bits
clock: 100MHz
capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce
cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss
ht tm pbe syscall nx pdpe1gb rdtscp constant_tsc arch_perfmon pebs bts rep_good
nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor
ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic
popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb
xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep
erms cpufreq
configuration: cores=8 enabledcores=8 threads=16
*-cache:0
description: L1 cache
physical id: 710
slot: Processor 1 Internal L1 Cache
size: 256KiB
capacity: 384KiB
capabilities: burst internal write-back data
*-cache:1
description: L2 cache
physical id: 720
slot: Processor 1 Internal L2 Cache
size: 2MiB
capacity: 3MiB
capabilities: burst internal write-back
*-cache:2
description: L3 cache
physical id: 730
slot: Processor 1 Internal L3 Cache
size: 25MiB
capacity: 30MiB
capabilities: burst internal write-back
*-cpu:1
description: CPU
product: Intel(R) Xeon(R) CPU E5-2667 v2 @ 3.30GHz
vendor: Intel Corp.
physical id: 401
bus info: cpu@1
version: Intel(R) Xeon(R) CPU E5-2667 v2 @ 3.30GHz
slot: Proc 2
size: 1200MHz
capacity: 1200MHz
width: 64 bits
clock: 100MHz
capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce
cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss
ht tm pbe syscall nx pdpe1gb rdtscp constant_tsc arch_perfmon pebs bts rep_good
nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor
ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic
popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb
xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep
erms cpufreq
configuration: cores=8 enabledcores=8 threads=16
*-cache:0
description: L1 cache
physical id: 716
slot: Processor 2 Internal L1 Cache
size: 256KiB
capacity: 384KiB
capabilities: burst internal write-back data
*-cache:1
description: L2 cache
physical id: 726
slot: Processor 2 Internal L2 Cache
size: 2MiB
capacity: 3MiB
capabilities: burst internal write-back
*-cache:2
description: L3 cache
physical id: 736
slot: Processor 2 Internal L3 Cache
size: 25MiB
capacity: 30MiB
capabilities: burst internal write-back
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https://bugs.launchpad.net/bugs/1290735
Title:
usleep segfaulting
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