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commit bd3b0fbae33a9a4cc5e2daf049443d5cf03d4251
Author: Andreas Schwab <schwab@suse.de>
Date: Mon Nov 5 12:47:30 2018 +0100
libanl: properly cleanup if first helper thread creation failed (bug 22927)
2018-11-05 Andreas Schwab <schwab@suse.de>
[BZ #22927]
* resolv/gai_misc.c (__gai_enqueue_request): Don't crash if
creating the first helper thread failed.
[Note from DJ - hard to test; must force second calloc() call in
getaddrinfo_a() to return NULL/ENOMEM]
diff -rup a/resolv/gai_misc.c b/resolv/gai_misc.c
--- a/resolv/gai_misc.c 2012-12-24 22:02:13.000000000 -0500
+++ b/resolv/gai_misc.c 2019-01-22 16:19:30.514199534 -0500
@@ -264,8 +264,11 @@ __gai_enqueue_request (struct gaicb *gai
/* We cannot create a thread in the moment and there is
also no thread running. This is a problem. `errno' is
set to EAGAIN if this is only a temporary problem. */
- assert (lastp->next == newp);
- lastp->next = NULL;
+ assert (requests == newp || lastp->next == newp);
+ if (lastp != NULL)
+ lastp->next = NULL;
+ else
+ requests = NULL;
requests_tail = lastp;
newp->next = freelist;