8000 bash segfault with kvm stage1 · Issue #3519 · rkt/rkt · GitHub
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bash segfault with kvm stage1 #3519

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flx42 opened this issue Jan 6, 2017 · 6 comments
Open

bash segfault with kvm stage1 #3519

flx42 opened this issue Jan 6, 2017 · 6 comments
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kind/support needs/review

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@flx42
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flx42 commented Jan 6, 2017

Environment

rkt Version: 1.21.0
appc Version: 0.8.9
Go Version: go1.7.3
Go OS/Arch: linux/amd64
Features: -TPM +SDJOURNAL
--
Linux 4.4.0-57-generic x86_64
--
NAME="Ubuntu"
VERSION="16.04.1 LTS (Xenial Xerus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 16.04.1 LTS"
VERSION_ID="16.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
VERSION_CODENAME=xenial
UBUNTU_CODENAME=xenial
--
systemd 229
+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN

What did you do?

rkt run --debug --dns=8.8.8.8 --stage1-name=coreos.com/rkt/stage1-kvm:1.21.0 --insecure-options=image docker://centos:7 --exec sh -- -c "curl -sSL https://get.docker.com/ | sh"

This was only for testing purpose, I don't actually want to run Docker inside KVM :)

What did you expect to see?
Complete installation of Docker.

What did you see instead?

[  OK  ] Started rkt supervisor-ready signaling.
[    1.427417] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x326bd592a83, max_idle_ns: 440795311901 ns
[    1.880418] sh[224]: segfault at 20 ip 00000000004553c0 sp 00007fffdae25650 error 6 in bash[400000+dd000]
[    1.880959] Core dump to |/bin/false pipe failed
[    1.765953] centos[196]: sh: line 311:   224 Segmentation fault      $sh_c "cat >/etc/yum.repos.d/docker-${repo}.repo"  <<-EOF
[    1.766316] centos[196]: [docker-${repo}-repo]
[    1.766553] centos[196]: name=Docker ${repo} Repository
[    1.766743] centos[196]: baseurl=${yum_url}/repo/${repo}/${lsb_dist}/${dist_version}
[    1.766956] centos[196]: enabled=1
[    1.767160] centos[196]: gpgcheck=1
[    1.767361] centos[196]: gpgkey=${yum_url}/gpg
[    1.767550] centos[196]: EOF
[    1.820993] reaper.sh[226]: Showing one /org/freedesktop/systemd1/unit/centos_2eservice
[    1.822151] reaper.sh[226]: Sent message type=method_call sender=n/a destination=org.freedesktop.systemd1 object=/org/freedesktop/systemd1/unit/centos_2eservice interface=org.freedesktop.DBus.Properties member=GetAll cookie=1 reply_cookie=0 error=n/a
[    1.826422] reaper.sh[226]: Got message type=method_return sender=n/a destination=n/a object=n/a interface=n/a member=n/a cookie=1 reply_cookie=1 error=n/a
[    1.984523] systemd-shutdow: 196 output lines suppressed due to ratelimiting
[    2.021494] systemd-shutdown[1]: Sending SIGTERM to remaining processes...
[    2.029369] systemd-journal: 22 output lines suppressed due to ratelimiting
[    2.029919] systemd-shutdown[1]: Sending SIGKILL to remaining processes...
@flx42
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flx42 commented Jan 6, 2017

Could be the same or related to #1917.
I built my own stage1-kvm-qemu.aci and I had the same issue, then I re-compiled with cache=loose as suggested by @jjlakis here and the segfault is now gone.

@jjlakis
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jjlakis commented Jan 18, 2017

@flx42 I think it's fixed by #3485 now

@flx42
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flx42 commented Jan 20, 2017 •
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@jjlakis This fix should have been picked up in 1.23.0, right? Unless I'm missing something, none of these bugs seems fixed for me:

$ sudo rkt run --debug --dns=8.8.8.8 --net=bridge-nat --stage1-name=coreos.com/rkt/stage1-kvm:1.23.0 --insecure-options=image docker://ubuntu:16.04 --exec sh -- -c "apt-get update"
[...]
[  OK  ] Started rkt supervisor-ready signaling.
[    1.186833] ubuntu[209]: Get:1 http://archive.ubuntu.com/ubuntu xenial InRelease [247 kB]
  Warning: unable to translate guest address 0x410000413c18 to host
  Warning: unable to translate guest address 0x410000413c18 to host
  Warning: unable to translate guest address 0x410000413c18 to host
  Warning: unable to translate guest address 0x410000413c18 to host
  Warning: unable to translate guest address 0x410000413c18 to host
  Warning: unable to translate guest address 0x410000413c18 to host
  Warning: unable to translate guest address 0x410000413c18 to host
  Warning: unable to translate guest address 0x410000413c18 to host
[    2.111847] ubuntu[209]: Get:2 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
[    2.424205] ubuntu[209]: Get:3 http://archive.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
[    3.183482] ubuntu[209]: Reading package lists...
[    3.195034] ubuntu[209]: E: Unable to determine file size for fd 7 - fstat (2: No such file or directory)
[    3.195433] ubuntu[209]: E: Unable to determine file size for fd 7 - fstat (2: No such file or directory)
[    3.195779] ubuntu[209]: E: Unable to determine file size for fd 7 - fstat (2: No such file or directory)

$ sudo rkt run --debug --dns=8.8.8.8 --net=bridge-nat --stage1-name=coreos.com/rkt/stage1-kvm:1.23.0 --insecure-options=image docker://centos:7 --exec sh -- -c "curl -sSL https://get.docker.com/ | sh"
[...]
[    1.465529] centos[212]: sh: line 350:   239 Segmentation fault      $sh_c "cat >/etc/yum.repos.d/docker-${repo}.repo"  <<-EOF
[    1.465822] centos[212]: [docker-${repo}-repo]
[    1.466019] centos[212]: name=Docker ${repo} Repository
[    1.466196] centos[212]: baseurl=${yum_url}/repo/${repo}/${lsb_dist}/${dist_version}
[    1.466369] centos[212]: enabled=1
[    1.466540] centos[212]: gpgcheck=1
[    1.466711] centos[212]: gpgkey=${yum_url}/gpg
[    1.466882] centos[212]: EOF

@s-urbaniak
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/cc @grahamwhaley

@grahamwhaley
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Hi @flx42 @jjlakis - I suspect you may also need #3475 . If you are able to try/confirm that, then that would be great. Let me know if you cannot. thx

@flx42
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flx42 commented Jan 23, 2017

@grahamwhaley I applied your patches from #3475 on top of the 1.23.0 tag, and it seems to work fine with both lkvm and qemu, thank you!

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@s-urbaniak @jonboulle @flx42 @grahamwhaley @jjlakis
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