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upstream: have sshpkt_fatal() save/restore errno before we 

potentially call strerror() (via ssh_err()); ok dtucker

OpenBSD-Commit-ID: 5590df31d21405498c848245b85c24acb84ad787
This commit is contained in:
djm@openbsd.org 2020-01-30 07:20:05 +00:00 committed by Damien Miller
parent 14ef4efe2b
commit dce74eab0c
1 changed files with 4 additions and 1 deletions
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5
packet.c
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@ -1,4 +1,4 @@
/* $OpenBSD: packet.c,v 1.289 2020/01/23 10:53:04 dtucker Exp $ */
/* $OpenBSD: packet.c,v 1.290 2020/01/30 07:20:05 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -1850,6 +1850,7 @@ static void
sshpkt_vfatal(struct ssh *ssh, int r, const char *fmt, va_list ap)
{
char *tag = NULL, remote_id[512];
int oerrno = errno;
sshpkt_fmt_connection_id(ssh, remote_id, sizeof(remote_id));
@ -1877,6 +1878,7 @@ sshpkt_vfatal(struct ssh *ssh, int r, const char *fmt, va_list ap)
case SSH_ERR_NO_HOSTKEY_ALG_MATCH:
if (ssh && ssh->kex && ssh->kex->failed_choice) {
ssh_packet_clear_keys(ssh);
errno = oerrno;
logdie("Unable to negotiate with %s: %s. "
"Their offer: %s", remote_id, ssh_err(r),
ssh->kex->failed_choice);
@ -1889,6 +1891,7 @@ sshpkt_vfatal(struct ssh *ssh, int r, const char *fmt, va_list ap)
__func__);
}
ssh_packet_clear_keys(ssh);
errno = oerrno;
logdie("%s%sConnection %s %s: %s",
tag != NULL ? tag : "", tag != NULL ? ": " : "",
ssh->state->server_side ? "from" : "to",