fix(asan): fixing issues found by address sanitizer

Signed-off-by: Dmitry Savitskiy <[email protected]>

io-engine/src/bdev/nexus/nexus_bdev.rs

@@ -851,10 +851,11 @@ impl<'n> Nexus<'n> {
             let name = self.name.clone();
 
             // After calling unregister_bdev_async(), Nexus is gone.
+            let evt = self.event(EventAction::Delete);
             match self.as_mut().bdev_mut().unregister_bdev_async().await {
                 Ok(_) => {
                     info!("Nexus '{name}': nexus destroyed ok");
-                    self.event(EventAction::Delete).generate();
+                    evt.generate();
                     Ok(())
                 }
                 Err(err) => {

io-engine/src/core/mod.rs

@@ -458,6 +458,7 @@ impl ToErrno for CoreError {
 
 /// Logical volume layer failure.
 #[derive(Debug, Copy, Clone, Eq, PartialOrd, PartialEq)]
+#[repr(C)]
 pub enum LvolFailure {
     NoSpace,
 }
@@ -472,6 +473,7 @@ pub enum IoSubmissionFailure {
 // Generic I/O completion status for block devices, which supports per-protocol
 // error domains.
 #[derive(Copy, Clone, Eq, PartialOrd, PartialEq)]
+#[repr(C)]
 pub enum IoCompletionStatus {
     Success,
     NvmeError(NvmeStatus),
@@ -501,10 +503,9 @@ impl From<NvmeStatus> for IoCompletionStatus {
         match s {
             NvmeStatus::NO_SPACE
             | NvmeStatus::Generic(SPDK_NVME_SC_CAPACITY_EXCEEDED) => {
-                IoCompletionStatus::LvolError(LvolFailure::NoSpace)
+                Self::LvolError(LvolFailure::NoSpace)
             }
-
-            _ => IoCompletionStatus::NvmeError(s),
+            _ => Self::NvmeError(s),
         }
     }
 }

io-engine/src/lvs/lvs_store.rs

@@ -683,6 +683,8 @@ impl Lvs {
 
         let base_bdev = self.base_bdev();
 
+        let evt = self.event(EventAction::Delete);
+
         unsafe {
             vbdev_lvs_destruct(
                 self.as_inner_ptr(),
@@ -700,7 +702,7 @@ impl Lvs {
 
         info!("{}: lvs destroyed successfully", self_str);
 
-        self.event(EventAction::Delete).generate();
+        evt.generate();
 
         bdev_destroy(&base_bdev.bdev_uri_original_str().unwrap())
             .await