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qemu: Fix seamless SPICE migration

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Since the wait is done during migration (still inside
QEMU_ASYNC_JOB_MIGRATION_OUT), the code should enter the monitor as such
in order to prohibit all other jobs from interfering in the meantime.
This patch fixes bug #1009886 in which qemuDomainGetBlockInfo was
waiting on the monitor condition and after GetSpiceMigrationStatus
mangled its internal data, the daemon crashed.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1009886
(cherry picked from commit 484cc3217b)
This commit is contained in:
Martin Kletzander 2013-09-20 16:40:20 +02:00 committed by Doug Goldstein
parent 7659e912c5
commit fea2550974
1 changed files with 4 additions and 1 deletions
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5
src/qemu/qemu_migration.c
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@ -1598,7 +1598,10 @@ qemuMigrationWaitForSpice(virQEMUDriverPtr driver,
/* Poll every 50ms for progress & to allow cancellation */
struct timespec ts = { .tv_sec = 0, .tv_nsec = 50 * 1000 * 1000ull };
qemuDomainObjEnterMonitor(driver, vm);
if (qemuDomainObjEnterMonitorAsync(driver, vm,
QEMU_ASYNC_JOB_MIGRATION_OUT) < 0)
return -1;
if (qemuMonitorGetSpiceMigrationStatus(priv->mon,
&spice_migrated) < 0) {
qemuDomainObjExitMonitor(driver, vm);