On one Xen DomU (i.e. a Xen guest VM; not the system I'm writing this
bug report on) running Debian Testing, I get the following error when
running cpufetch:
# cpufetch
Floating point exception
Details about the CPU:
# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 26
model name : Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
stepping : 5
microcode : 0x11
cpu MHz : 2673.428
cache size : 8192 KB
physical id : 0
siblings : 1
core id : 1
cpu cores : 1
apicid : 3
initial apicid : 3
fpu : yes
fpu_exception : yes
cpuid level : 11
wp : yes
flags : fpu de tsc msr pae cx8 apic sep cmov pat clflush mmx fxsr sse sse2 ht syscall nx lm constant_tsc rep_good nopl cpuid tsc_known_freq pni ssse3 cx16 sse4_1 sse4_2 popcnt hypervisor lahf_lm dtherm ida
bugs : null_seg cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs itlb_multihit
bogomips : 5346.81
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
Trying to strace the call:
# strace cpufetch
execve("/usr/bin/cpufetch", ["cpufetch"], 0x7fff81e838d0 /* 23 vars */) = 0
brk(NULL) = 0x55b19526b000
openat(AT_FDCWD, "/usr/lib/olla/libolla.so", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0\n\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=6728, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fce2cea7000
mmap(NULL, 2102064, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fce2cca5000
mprotect(0x7fce2cca7000, 2093056, PROT_NONE) = 0
mmap(0x7fce2cea6000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1000) = 0x7fce2cea6000
close(3) = 0
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=80036, ...}) = 0
mmap(NULL, 80036, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fce2cc91000
close(3) = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200\177\2\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1839168, ...}) = 0
mmap(NULL, 1852480, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fce2cacc000
mprotect(0x7fce2caf2000, 1658880, PROT_NONE) = 0
mmap(0x7fce2caf2000, 1347584, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x26000) = 0x7fce2caf2000
mmap(0x7fce2cc3b000, 307200, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x16f000) = 0x7fce2cc3b000
mmap(0x7fce2cc87000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1ba000) = 0x7fce2cc87000
mmap(0x7fce2cc8d000, 13376, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fce2cc8d000
close(3) = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libdl.so.2", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0000\21\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=18688, ...}) = 0
mmap(NULL, 20752, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fce2cac6000
mmap(0x7fce2cac7000, 8192, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1000) = 0x7fce2cac7000
mmap(0x7fce2cac9000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7fce2cac9000
mmap(0x7fce2caca000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7fce2caca000
close(3) = 0
mmap(NULL, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fce2cac3000
arch_prctl(ARCH_SET_FS, 0x7fce2cac3740) = 0
mprotect(0x7fce2cc87000, 12288, PROT_READ) = 0
mprotect(0x7fce2caca000, 4096, PROT_READ) = 0
mprotect(0x55b1947b7000, 4096, PROT_READ) = 0
mprotect(0x7fce2ced3000, 4096, PROT_READ) = 0
munmap(0x7fce2cc91000, 80036) = 0
brk(NULL) = 0x55b19526b000
brk(0x55b19528c000) = 0x55b19528c000
openat(AT_FDCWD, "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/sys/devices/system/cpu/online", O_RDONLY|O_CLOEXEC) = 3
read(3, "0\n", 8192) = 2
close(3) = 0
sched_setaffinity(0, 128, [0]) = 0
--- SIGFPE {si_signo=SIGFPE, si_code=FPE_INTDIV, si_addr=0x55b1947aeb06} ---
+++ killed by SIGFPE +++
Floating point exception
Anything else I can provide?
Axel Beckert <abe@debian.org> 于2021年11月13日周六 上午5:39写道： 1.0+git20211101+a5b321a9668f-3 Can you test it again and tell me the result? thanks Kind regards Clay Stan
Axel Beckert <abe@debian.org> 于2021年11月13日周六 上午5:39写道： 1.0+git20211101+a5b321a9668f-3 Can you test it again and tell me the result? thanks Kind regards Clay Stan
Hi,
clay stan wrote:
[…]
Well, this is weird and might have been like this before, but if so, I
didn't notice it:
It seems to be random if it works or crashes with a Floating point
exception. So, no, not really fixed although it sometimes seems so.
Some examples in chronological order:
As root:
# cpufetch
Name: Intel Core i7 920
Microarchitecture: Nehalem
Technology: 45nm
Max Frequency: Unknown
Cores: 1 cores (HT disabled)
AVX: No
FMA: No
L1i Size: 32KB
L1d Size: 32KB
L2 Size: 256KB
L3 Size: 8MB
Peak Performance: Unknown
# cpufetch --style legacy
Floating point exception
# cpufetch --style legacy
###############@
######@ ######@
###@ ###@
##@ ###@ Name: Intel Core i7 920
##@ ##@ Microarchitecture: Nehalem
##@ ##@ Technology: 45nm
@ ##@ ##@ ##@ Max Frequency: Unknown
#@ ##@ ########@ #####@ #####@ ##@ ##@ Cores: 1 cores (HT disabled)
#@ ##@ ##@ ##@ ##@ ###@ ###@ ##@ ##@ AVX: No
#@ ##@ ##@ ##@ ##@ ##@ ##@ ##@ ##@ FMA: No
#@ ##@ ##@ ##@ ##@ #########@ ##@ ###@ L1i Size: 32KB
#@ ##@ ##@ ##@ ##@ ##@ ##@ ####@ L1d Size: 32KB
#@ #@ ##@ ##@ ####@ ########@ #@ ##@ L2 Size: 256KB
##@ L3 Size: 8MB
##@ Peak Performance: Unknown
###@ ###@
####@ #########@
#########@ ###############@
##############################@
#
As user:
$ cpufetch
[1] 31108 floating point exception cpufetch
$ cpufetch
Name: Intel Core i7 920
Microarchitecture: Nehalem
Technology: 45nm
Max Frequency: Unknown
Cores: 1 cores (HT disabled)
AVX: No
FMA: No
L1i Size: 32KB
L1d Size: 32KB
L2 Size: 256KB
L3 Size: 8MB
Peak Performance: Unknown
$ cpufetch --style legacy
###############@
######@ ######@
###@ ###@
##@ ###@ Name: Intel Core i7 920
##@ ##@ Microarchitecture: Nehalem
##@ ##@ Technology: 45nm
@ ##@ ##@ ##@ Max Frequency: Unknown
#@ ##@ ########@ #####@ #####@ ##@ ##@ Cores: 1 cores (HT disabled)
#@ ##@ ##@ ##@ ##@ ###@ ###@ ##@ ##@ AVX: No
#@ ##@ ##@ ##@ ##@ ##@ ##@ ##@ ##@ FMA: No
#@ ##@ ##@ ##@ ##@ #########@ ##@ ###@ L1i Size: 32KB
#@ ##@ ##@ ##@ ##@ ##@ ##@ ####@ L1d Size: 32KB
#@ #@ ##@ ##@ ####@ ########@ #@ ##@ L2 Size: 256KB
##@ L3 Size: 8MB
##@ Peak Performance: Unknown
###@ ###@
####@ #########@
#########@ ###############@
##############################@
$ cpufetch --style legacy
[1] 31695 floating point exception cpufetch --style legacy
$ cpufetch --style legacy
[1] 31703 floating point exception cpufetch --style legacy
$ cpufetch --style legacy
[1] 31711 floating point exception cpufetch --style legacy
$ cpufetch --style legacy
###############@
######@ ######@
###@ ###@
##@ ###@ Name: Intel Core i7 920
##@ ##@ Microarchitecture: Nehalem
##@ ##@ Technology: 45nm
@ ##@ ##@ ##@ Max Frequency: Unknown
#@ ##@ ########@ #####@ #####@ ##@ ##@ Cores: 1 cores (HT disabled)
#@ ##@ ##@ ##@ ##@ ###@ ###@ ##@ ##@ AVX: No
#@ ##@ ##@ ##@ ##@ ##@ ##@ ##@ ##@ FMA: No
#@ ##@ ##@ ##@ ##@ #########@ ##@ ###@ L1i Size: 32KB
#@ ##@ ##@ ##@ ##@ ##@ ##@ ####@ L1d Size: 32KB
#@ #@ ##@ ##@ ####@ ########@ #@ ##@ L2 Size: 256KB
##@ L3 Size: 8MB
##@ Peak Performance: Unknown
###@ ###@
####@ #########@
#########@ ###############@
##############################@
Regards, Axel