Package: qemu-kvm
Version: 1.1.2+dfsg-2
Severity: normal
To repeat:
nohup kvm -nographic & strace -p $!
observe:
read(0, 0x7fff472561c7, 1) = -1 EBADF (Bad file descriptor)
select(10, [0 5 6 9], [], [], {1, 0}) = 1 (in [0], left {0, 999991})
read(0, 0x7fff472561c7, 1) = -1 EBADF (Bad file descriptor)
select(10, [0 5 6 9], [], [], {1, 0}) = 1 (in [0], left {0, 999997})
read(0, 0x7fff472561c7, 1) = -1 EBADF (Bad file descriptor)
select(10, [0 5 6 9], [], [], {1, 0}) = 1 (in [0], left {0, 999997})
read(0, 0x7fff472561c7, 1) = -1 EBADF (Bad file descriptor)
select(10, [0 5 6 9], [], [], {1, 0}) = 1 (in [0], left {0, 999998})
This is annoying because an unwary admin could assume that KVM normally
uses 100% cpu. -background does not make sense if one uses a script which
sets up resources (TAP), calls KVM then deallocates those resources when
it completes.
Workaround:
echo 'fail' | kvm .........
-- Package-specific info:
/proc/cpuinfo:
processor : 0
vendor_id : AuthenticAMD
cpu family : 21
model : 16
model name : AMD A8-4500M APU with Radeon(tm) HD Graphics
stepping : 1
microcode : 0x600110f
cpu MHz : 1400.000
cache size : 2048 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 2
apicid : 16
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb
rdtscp lm constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni
pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c
lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch
osvw ibs xop skinit wdt lwp fma4 nodeid_msr tbm topoext perfctr_core arat cpb
hw_pstate npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid
decodeassists pausefilter pfthreshold
bogomips : 3793.09
TLB size : 1536 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate [9] [10]
processor : 1
vendor_id : AuthenticAMD
cpu family : 21
model : 16
model name : AMD A8-4500M APU with Radeon(tm) HD Graphics
stepping : 1
microcode : 0x600110f
cpu MHz : 1400.000
cache size : 2048 KB
physical id : 0
siblings : 4
core id : 1
cpu cores : 2
apicid : 17
initial apicid : 1
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb
rdtscp lm constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni
pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c
lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch
osvw ibs xop skinit wdt lwp fma4 nodeid_msr tbm topoext perfctr_core arat cpb
hw_pstate npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid
decodeassists pausefilter pfthreshold
bogomips : 3793.65
TLB size : 1536 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate [9] [10]
processor : 2
vendor_id : AuthenticAMD
cpu family : 21
model : 16
model name : AMD A8-4500M APU with Radeon(tm) HD Graphics
stepping : 1
microcode : 0x600110f
cpu MHz : 1400.000
cache size : 2048 KB
physical id : 0
siblings : 4
core id : 2
cpu cores : 2
apicid : 18
initial apicid : 2
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb
rdtscp lm constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni
pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c
lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch
osvw ibs xop skinit wdt lwp fma4 nodeid_msr tbm topoext perfctr_core arat cpb
hw_pstate npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid
decodeassists pausefilter pfthreshold
bogomips : 3793.77
TLB size : 1536 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate [9] [10]
processor : 3
vendor_id : AuthenticAMD
cpu family : 21
model : 16
model name : AMD A8-4500M APU with Radeon(tm) HD Graphics
stepping : 1
microcode : 0x600110f
cpu MHz : 1400.000
cache size : 2048 KB
physical id : 0
siblings : 4
core id : 3
cpu cores : 2
apicid : 19
initial apicid : 3
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb
rdtscp lm constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni
pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c
lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch
osvw ibs xop skinit wdt lwp fma4 nodeid_msr tbm topoext perfctr_core arat cpb
hw_pstate npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid
decodeassists pausefilter pfthreshold
bogomips : 3793.76
TLB size : 1536 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate [9] [10]
-- System Information:
Debian Release: wheezy/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 3.2.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages qemu-kvm depends on:
ii adduser 3.113+nmu3
ii ipxe-qemu 1.0.0+git-20120202.f6840ba-3
ii libaio1 0.3.109-3
ii libasound2 1.0.25-4
ii libbluetooth3 4.99-2
ii libbrlapi0.5 4.4-5
ii libc6 2.13-37
ii libcurl3-gnutls 7.28.0-2
ii libglib2.0-0 2.33.12+really2.32.4-2
ii libgnutls26 2.12.20-1
ii libiscsi1 1.4.0-3
ii libjpeg8 8d-1
ii libncurses5 5.9-10
ii libpng12-0 1.2.49-3
ii libpulse0 2.0-6
ii libsasl2-2 2.1.25.dfsg1-5
ii libsdl1.2debian 1.2.15-5
ii libspice-server1 0.11.0-1
ii libtinfo5 5.9-10
ii libusbredirparser0 0.4.3-2
ii libuuid1 2.20.1-5.2
ii libvdeplug2 2.3.2-4
ii libx11-6 2:1.5.0-1
ii python 2.7.3-3
ii qemu-keymaps 1.1.2+dfsg-2
ii qemu-utils 1.1.2+dfsg-2
ii seabios 1.7.0-1
ii vgabios 0.7a-3
ii zlib1g 1:1.2.7.dfsg-13
Versions of packages qemu-kvm recommends:
ii bridge-utils 1.5-4
ii iproute 20120521-3
Versions of packages qemu-kvm suggests:
pn debootstrap <none>
pn samba <none>
pn vde2 <none>
-- no debconf information
--
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