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authorChristian Krinitsin <mail@krinitsin.com>2025-05-30 14:51:13 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-05-30 14:51:13 +0000
commit225caa38269323af1bfc2daadff5ec8bd930747f (patch)
treee0a5fefde9ee100ba6f32fb36de6707490e4164e /mailinglist/output_launchpad/1268671
parent904141bfb8d5385b75eb3b7afec1dcda89af65a7 (diff)
downloademulator-bug-study-225caa38269323af1bfc2daadff5ec8bd930747f.tar.gz
emulator-bug-study-225caa38269323af1bfc2daadff5ec8bd930747f.zip
add mailinglist scraper results
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+CentOS guest crashing due to assertion failure in qemu-char.c
+
+Here is the log in /var/log/libvirt/qemu/centos_heavy.log
+
+qemu-kvm: /builddir/build/BUILD/qemu-kvm-0.12.1.2/qemu-char.c:630: io_watch_poll_finalize: Assertion `iwp->src == ((void *)0)' failed.
+2014-01-13 16:50:31.576+0000: shutting down
+
+The code it's failing the assertion on has an interesting comment:
+
+ static void io_watch_poll_finalize(GSource *source)
+ {
+ /* Due to a glib bug, removing the last reference to a source
+ * inside a finalize callback causes recursive locking (and a
+ * deadlock). This is not a problem inside other callbacks,
+ * including dispatch callbacks, so we call io_remove_watch_poll
+ * to remove this source. A t this point, iwp->src must
+ * be NULL, or we would leak it.
+ *
+ * This would be solved much more elegantly by child sources,
+ * but we support older glib versions that do not have them.
+ */
+ IOWatchPoll *iwp = io_watch_poll_from_source(source);
+ assert(iwp->src == NULL);
+ }
+
+------
+CPU Info:
+
+http://pastebin.com/U7MrzFxK
+
+--------
+
+Relevant RPM versions:
+
+qemu-kvm-0.12.1.2-2.415.el6_5.3.x86_64
+libvirt-0.10.2-29.el6_5.2.x86_64
+
+--------
+
+Domain config:
+
+http://pastebin.com/Nf2VsER8
+
+(Note the use of the vmchannels; I believe this is playing a part in this crash)
+
+
+
+QEMU 0.12 is completely outdated nowadays ... can you still reproduce this problem with the latest version of QEMU?
+
+It's a glib bug. It's fixed in RHEL 6.9 beta and in due time the fix will get to CentOS.
+
+https://bugzilla.redhat.com/show_bug.cgi?id=1212722
+