From 67c56f6e65b9cd2681ef1bc61d8b51cbc543fa42 Mon Sep 17 00:00:00 2001 From: Jim Fehlig Date: Thu, 31 May 2018 15:41:37 -0600 Subject: [PATCH] libxl: fix leaking logfile fds MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Per-domain log files were introduced in commit a30b08b7179. The FILE objects associated with these log files are stored in a hash table using domid as a key. When a domain is shutdown, destroyed, or otherwise powered-off, the FILE object is removed from the hash table, where the free function will close the FILE. Unfortunately the call to remove the FILE from the hash table occurs after setting domid=-1 in the libxlDomainCleanup() function. The object is never removed from the hash table, the free function is never called, and the underlying fd is leaked. Fix by removing the FILE object from the hash table before setting domid=-1. Signed-off-by: Jim Fehlig Reviewed-by: Ján Tomko --- src/libxl/libxl_domain.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/src/libxl/libxl_domain.c b/src/libxl/libxl_domain.c index d4859d6707..d12b1b1b4b 100644 --- a/src/libxl/libxl_domain.c +++ b/src/libxl/libxl_domain.c @@ -769,6 +769,7 @@ libxlDomainCleanup(libxlDriverPrivatePtr driver, VIR_WARN("Unable to release lease on %s", vm->def->name); VIR_DEBUG("Preserving lock state '%s'", NULLSTR(priv->lockState)); + libxlLoggerCloseFile(cfg->logger, vm->def->id); vm->def->id = -1; if (priv->deathW) { @@ -822,8 +823,6 @@ libxlDomainCleanup(libxlDriverPrivatePtr driver, VIR_FREE(xml); } - libxlLoggerCloseFile(cfg->logger, vm->def->id); - virDomainObjRemoveTransientDef(vm); virObjectUnref(cfg); }