[PATCH 1/2] KVM: selftests: kvm_vm_elf_load() and elfhdr_get() should close fd

[Reiji Watanabe]

kvm_vm_elf_load() and elfhdr_get() open one file each, but they
never close the opened file descriptor.  If a test repeatedly
creates and destroys a VM with vm_create_with_vcpus(), which
(directly or indirectly) calls those two functions, the test
might end up getting a open failure with EMFILE.
Fix those two functions to close the file descriptor.

Signed-off-by: Reiji Watanabe <reijiw at google.com>
---
 tools/testing/selftests/kvm/lib/elf.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/kvm/lib/elf.c b/tools/testing/selftests/kvm/lib/elf.c
index 13e8e3dcf984..9b23537a3caa 100644
--- a/tools/testing/selftests/kvm/lib/elf.c
+++ b/tools/testing/selftests/kvm/lib/elf.c
@@ -91,6 +91,7 @@ static void elfhdr_get(const char *filename, Elf64_Ehdr *hdrp)
 		"  hdrp->e_shentsize: %x\n"
 		"  expected: %zx",
 		hdrp->e_shentsize, sizeof(Elf64_Shdr));
+	close(fd);
 }
 
 /* VM ELF Load
@@ -190,4 +191,5 @@ void kvm_vm_elf_load(struct kvm_vm *vm, const char *filename)
 				phdr.p_filesz);
 		}
 	}
+	close(fd);
 }
-- 
2.35.1.473.g83b2b277ed-goog