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Bug 1197051
Summary: | [aarch64] sshd dies with SIGSYS | ||||||
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Product: | [Fedora] Fedora | Reporter: | Richard W.M. Jones <rjones> | ||||
Component: | openssh | Assignee: | Petr Lautrbach <plautrba> | ||||
Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
Severity: | unspecified | Docs Contact: | |||||
Priority: | unspecified | ||||||
Version: | rawhide | CC: | jjelen, mattias.ellert, mgrepl, mjuszkie, pbrobinson, plautrba, tmraz | ||||
Target Milestone: | --- | ||||||
Target Release: | --- | ||||||
Hardware: | aarch64 | ||||||
OS: | Unspecified | ||||||
Whiteboard: | |||||||
Fixed In Version: | openssh-6.7p1-9.fc22 | Doc Type: | Bug Fix | ||||
Doc Text: | Story Points: | --- | |||||
Clone Of: | |||||||
: | 1406665 1406666 (view as bug list) | Environment: | |||||
Last Closed: | 2015-03-09 08:30:29 UTC | Type: | Bug | ||||
Regression: | --- | Mount Type: | --- | ||||
Documentation: | --- | CRM: | |||||
Verified Versions: | Category: | --- | |||||
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
Cloudforms Team: | --- | Target Upstream Version: | |||||
Embargoed: | |||||||
Bug Depends On: | |||||||
Bug Blocks: | 1406665, 1406666 | ||||||
Attachments: |
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Description
Richard W.M. Jones
2015-02-27 11:51:06 UTC
Apparently SIGSYS is caused by seccomp. Maybe something to do with enabling seccomp recently on aarch64. Peter? (In reply to Richard W.M. Jones from comment #1) > Apparently SIGSYS is caused by seccomp. Maybe something > to do with enabling seccomp recently on aarch64. Peter? Possibly, Marcin actually wrote that code [rhbz 1195065] so he's likely the best to comment (it doesn't use libseccomp but the kernel API/feature directly) SIGSYS signal is violation of seccomp filter which was enabled during -8 release for aarch64. Can you have a look also into audit log for message SECCOMP? There should be mentioned at least syscall number which could help us. This is related to open bug #1195065. This patch was introduced by Marcin, I tested seccomp filter on aarch64 and it worked for me somehow but there will be still some glitches probably. I will have a look. As a workaround you can turn of sandboxing using option "UsePrivilegeSeparation yes". type=SECCOMP msg=audit(1425041219.124:279): auid=4294967295 uid=74 gid=74 ses=4294967295 subj=system_u:system_r:sshd_net_t:s0-s0:c0.c1023 pid=819 comm="sshd" exe="/usr/sbin/sshd" sig=31 arch=c00000b7 syscall=72 compat=0 ip=0x3ffa7fbc268 code=0x0 Which is pselect6() syscall. Created attachment 996013 [details]
grep -i seccomp /var/log/audit/audit.log
See attachment for SECCOMP logs.
openssh-6.7p1-9.fc22 has been submitted as an update for Fedora 22. https://admin.fedoraproject.org/updates/openssh-6.7p1-9.fc22 Package openssh-6.7p1-9.fc22: * should fix your issue, * was pushed to the Fedora 22 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing openssh-6.7p1-9.fc22' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2015-2786/openssh-6.7p1-9.fc22 then log in and leave karma (feedback). openssh-6.7p1-9.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report. |