[Bug debuginfod/28249] httpd-buildid-after-you gadget locks on wrong url

["fche at redhat dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=28249

Frank Ch. Eigler <fche at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #1 from Frank Ch. Eigler <fche at redhat dot com> ---
merging obvious patch:

commit 89b1a4e8793e0379e386da313c1bd90080390877 (HEAD -> master)
Author: Frank Ch. Eigler <fche@redhat.com>
Date:   Thu Aug 19 13:11:11 2021 -0400

    PR28249: correct debuginfod after-you locking

    The initial code for bug #27673 accidentally nuked all buildid service
    concurrency, not just identical concurrent requests.  Correct this
    with one-liner patch.  Observing the effect in the automated testsuite
    is difficult, so hand-tested against large requests and short ones,
    run in an interleaved way.

    Signed-off-by: Frank Ch. Eigler <fche@redhat.com>


diff --git a/debuginfod/debuginfod.cxx b/debuginfod/debuginfod.cxx
index 4ddd92558533..fca07f61954f 100644
--- a/debuginfod/debuginfod.cxx
+++ b/debuginfod/debuginfod.cxx
@@ -2141,7 +2141,7 @@ handler_cb (void * /*cls*/,
           struct timespec tsay_start, tsay_end;
           clock_gettime (CLOCK_MONOTONIC, &tsay_start);
           static unique_set<string> busy_urls;
-          unique_set_reserver<string> after_you(busy_urls, url1);
+          unique_set_reserver<string> after_you(busy_urls, url_copy);
           clock_gettime (CLOCK_MONOTONIC, &tsay_end);
           afteryou = (tsay_end.tv_sec - tsay_start.tv_sec) + (tsay_end.tv_nsec
- tsay_start.tv_nsec)/1.e9;
           add_metric ("thread_busy", "role", "http-buildid-after-you", -1);

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