jewel: ceph daemons DUMPABLE flag is cleared by setuid preventing coredumps #11736
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When ceph-* drops drops privileges via setuid, core dumps are no longer
generated because its DUMPABLE flag is cleared. We have to manually
turn that back on.
From prctl(2):
Normally, this flag is set to 1. However, it is reset to the current value contained in the file /proc/sys/fs/suid_dumpable (which by default has the value 0), in the fol‐
lowing circumstances:
* The process's effective user or group ID is changed.
* The process's filesystem user or group ID is changed (see credentials(7)).
* The process executes (execve(2)) a set-user-ID or set-group-ID program, or a program that has capabilities (see capabilities(7)).
Fixes: http://tracker.ceph.com/issues/17650
Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
(cherry picked from commit ff0e521)
ghost
changed the base branch from
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jenkins test this please (throttle unit test failed) |
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jenkins test this please (general jenkins failure) |
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jenkins test this please (unittest_throttle hangs) |
ghost
pushed a commit
that referenced
this pull request
Nov 9, 2016
…ed by setuid preventing coredumps Reviewed-by: Loic Dachary <ldachary@redhat.com>
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It passed the rados (http://tracker.ceph.com/issues/17851#note-4) suite. It also passed the upgrade/jewel-x and upgrade/hammer-x (http://tracker.ceph.com/issues/17851#note-7) suites, except for one job which should be fixed by ceph/ceph-qa-suite#1256 and does not seem related to this pull request. Note that it won't be included in 10.2.4, reason why it targets jewel-next. |
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http://tracker.ceph.com/issues/17732