3 files changed, 16 insertions, 9 deletions
diff --git a/pkg/sentry/loader/elf.go b/pkg/sentry/loader/elf.go
index bc5b841fb..ba9c9ce12 100644
--- a/pkg/sentry/loader/elf.go
+++ b/pkg/sentry/loader/elf.go
@@ -464,7 +464,7 @@ func loadParsedELF(ctx context.Context, m *mm.MemoryManager, f *fs.File, info el
 	// base address big enough to fit all segments, so we first create a
 	// mapping for the total size just to find a region that is big enough.
 	//
-	// It is safe to unmap it immediately with racing with another mapping
+	// It is safe to unmap it immediately without racing with another mapping
 	// because we are the only one in control of the MemoryManager.
 	//
 	// Note that the vaddr of the first PT_LOAD segment is ignored when
diff --git a/pkg/sentry/platform/ring0/defs_impl.go b/pkg/sentry/platform/ring0/defs_impl.go
index d4bfc5a4a..a36a17e37 100755
--- a/pkg/sentry/platform/ring0/defs_impl.go
+++ b/pkg/sentry/platform/ring0/defs_impl.go
@@ -1,14 +1,14 @@
 package ring0
 
 import (
+	"gvisor.dev/gvisor/pkg/cpuid"
+	"reflect"
 	"syscall"
 
 	"fmt"
-	"gvisor.dev/gvisor/pkg/cpuid"
 	"gvisor.dev/gvisor/pkg/sentry/platform/ring0/pagetables"
 	"gvisor.dev/gvisor/pkg/sentry/usermem"
 	"io"
-	"reflect"
 )
 
 var (
diff --git a/pkg/sentry/syscalls/linux/sys_splice.go b/pkg/sentry/syscalls/linux/sys_splice.go
index 17e3dde1f..8a98fedcb 100644
--- a/pkg/sentry/syscalls/linux/sys_splice.go
+++ b/pkg/sentry/syscalls/linux/sys_splice.go
@@ -91,22 +91,29 @@ func Sendfile(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
 	}
 
 	// Get files.
+	inFile := t.GetFile(inFD)
+	if inFile == nil {
+		return 0, nil, syserror.EBADF
+	}
+	defer inFile.DecRef()
+
+	if !inFile.Flags().Read {
+		return 0, nil, syserror.EBADF
+	}
+
 	outFile := t.GetFile(outFD)
 	if outFile == nil {
 		return 0, nil, syserror.EBADF
 	}
 	defer outFile.DecRef()
 
-	inFile := t.GetFile(inFD)
-	if inFile == nil {
+	if !outFile.Flags().Write {
 		return 0, nil, syserror.EBADF
 	}
-	defer inFile.DecRef()
 
-	// Verify that the outfile Append flag is not set. Note that fs.Splice
-	// itself validates that the output file is writable.
+	// Verify that the outfile Append flag is not set.
 	if outFile.Flags().Append {
-		return 0, nil, syserror.EBADF
+		return 0, nil, syserror.EINVAL
 	}
 
 	// Verify that we have a regular infile. This is a requirement; the