We're missing an unlock in case installing the signal handler failed.
Fortunately, we barely see this error in real life.
Fixes: a960d6642d39 ("util/oslib-posix: Support concurrent os_mem_prealloc() invocation")
Fixes: CID 1468941
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Pankaj Gupta <pankaj.gupta@ionos.com>
Cc: Daniel P. Berrangé <berrange@redhat.com>
Cc: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
util/oslib-posix.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/util/oslib-posix.c b/util/oslib-posix.c
index 9efdc74bba..ac0dbc2adc 100644
--- a/util/oslib-posix.c
+++ b/util/oslib-posix.c
@@ -683,6 +683,7 @@ void os_mem_prealloc(int fd, char *area, size_t memory, int smp_cpus,
ret = sigaction(SIGBUS, &act, &sigbus_oldact);
if (ret) {
+ qemu_mutex_unlock(&sigbus_mutex);
error_setg_errno(errp, errno,
"os_mem_prealloc: failed to install signal handler");
return;
--
2.33.1