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commit c461ee19ecbc0c5c330aca20f7392c9a00730367
Author: Jenkins Build Slave User <ceph-release-team@redhat.com>
Date: Fri Dec 9 20:08:24 2016 +0000
10.2.5
commit 2c7d2b99d3be6f23188af4bf95f2d6f4a4fb516a
Merge: 9411351 f7abffe
Author: Samuel Just <sjust@redhat.com>
Date: Thu Dec 8 07:55:27 2016 -0800
Merge pull request #12376 from liewegas/wip-msgr-eagain-loop-jewel
msg/simple/Pipe: avoid returning 0 on poll timeout
Reviewed-by: Greg Farnum <gfarnum@redhat.com>
commit f7abffec751e454d119df273dc6e49e5f7106078
Author: Sage Weil <sage@redhat.com>
Date: Wed Dec 7 18:25:55 2016 -0600
msg/simple/Pipe: avoid returning 0 on poll timeout
If poll times out it will return 0 (no data to read on socket). In
165e5abdbf6311974d4001e43982b83d06f9e0cc we changed tcp_read_wait from
returning -1 to returning -errno, which means we return 0 instead of -1
in this case.
This makes tcp_read() get into an infinite loop by repeatedly trying to
read from the socket and getting EAGAIN.
Fix by explicitly checking for a 0 return from poll(2) and returning
EAGAIN in that case.
Fixes: http://tracker.ceph.com/issues/18184
Signed-off-by: Sage Weil <sage@redhat.com>
(cherry picked from commit 6c3d015c6854a12cda40673848813d968ff6afae)
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