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io: error_prepend() in qio_channel_readv_full_all() causes segfault

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Using error_prepend() in qio_channel_readv_full_all() causes a segfault
as errp is not set when ret is 0. This results in the failure of iotest
83. Replacing with error_setg() fixes the problem.

Additionally, removes a full stop at the end of error message

Reported-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Fixes: bebab91ebdfc591f8793a9a17370df1bfbe8b2ca
  (io: add qio_channel_readv_full_all_eof & qio_channel_readv_full_all helpers)
Message-Id: <be476bcdb99e820fec0fa09fe8f04c9dd3e62473.1613128220.git.jag.raman@oracle.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Jagannathan Raman 2021-02-12 06:16:07 -05:00 committed by Eric Blake
parent e055a5c8dc
commit c90e3512a4
1 changed files with 1 additions and 2 deletions
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3
io/channel.c
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@ -202,8 +202,7 @@ int qio_channel_readv_full_all(QIOChannel *ioc,
int ret = qio_channel_readv_full_all_eof(ioc, iov, niov, fds, nfds, errp); int ret = qio_channel_readv_full_all_eof(ioc, iov, niov, fds, nfds, errp);
if (ret == 0) { if (ret == 0) {
error_prepend(errp, error_setg(errp, "Unexpected end-of-file before all data were read");
"Unexpected end-of-file before all data were read.");
return -1; return -1;
} }
if (ret == 1) { if (ret == 1) {