diff mbox

[RFC,07/16] kvm tools: die if init_list__init returns failure

Message ID 1352721450-11340-8-git-send-email-will.deacon@arm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Will Deacon Nov. 12, 2012, 11:57 a.m. UTC
If init_list__init returns failure when initialising kvm tool, we can't
rely on our structures being fully initialised, so die rather than try
to continue and fail gracefully later on.

This prevents a SEGV when kvm is not available on the host:

  Error: '/dev/kvm' not found. Please make sure your kernel has CONFIG_KVM enabled and that the KVM modules are loaded.
  Warning: Failed init: kvm__init

Segmentation fault

Signed-off-by: Will Deacon <will.deacon@arm.com>
---
 tools/kvm/builtin-run.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
diff mbox

Patch

diff --git a/tools/kvm/builtin-run.c b/tools/kvm/builtin-run.c
index dec2e74..96e68af 100644
--- a/tools/kvm/builtin-run.c
+++ b/tools/kvm/builtin-run.c
@@ -665,7 +665,8 @@  static struct kvm *kvm_cmd_run_init(int argc, const char **argv)
 	printf("  # %s run -k %s -m %Lu -c %d --name %s\n", KVM_BINARY_NAME,
 		kvm->cfg.kernel_filename, kvm->cfg.ram_size / 1024 / 1024, kvm->cfg.nrcpus, kvm->cfg.guest_name);
 
-	init_list__init(kvm);
+	if (init_list__init(kvm) < 0)
+		die ("Initialisation failed");
 
 	return kvm;
 }