[PATCH] selftests/x86/lam: fix memory leak and resource leak in lam.c

[Malaya Kumar Rout]

Static Analyis for bench_htab_mem.c with cppcheck:error
tools/testing/selftests/x86/lam.c:585:3:
error: Resource leak: file_fd [resourceLeak]
tools/testing/selftests/x86/lam.c:593:3:
error: Resource leak: file_fd [resourceLeak]
tools/testing/selftests/x86/lam.c:600:3:
error: Memory leak: fi [memleak]
tools/testing/selftests/x86/lam.c:1066:2:
error: Resource leak: fd [resourceLeak]

fix the issue by closing the file descriptors and 
releasing the allocated memory.

Signed-off-by: Malaya Kumar Rout <malayarou...@gmail.com>
---
 tools/testing/selftests/x86/lam.c | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/tools/testing/selftests/x86/lam.c 
b/tools/testing/selftests/x86/lam.c
index 4d4a76532dc9..0b43b83ad142 100644
--- a/tools/testing/selftests/x86/lam.c
+++ b/tools/testing/selftests/x86/lam.c
@@ -581,24 +581,28 @@ int do_uring(unsigned long lam)
        if (file_fd < 0)
                return 1;
 
-       if (fstat(file_fd, &st) < 0)
+       if (fstat(file_fd, &st) < 0) {
+               close(file_fd);
                return 1;
-
+               }
        off_t file_sz = st.st_size;
 
        int blocks = (int)(file_sz + URING_BLOCK_SZ - 1) / URING_BLOCK_SZ;
 
        fi = malloc(sizeof(*fi) + sizeof(struct iovec) * blocks);
-       if (!fi)
+       if (!fi) {
+               close(file_fd);
                return 1;
-
+               }
        fi->file_sz = file_sz;
        fi->file_fd = file_fd;
 
        ring = malloc(sizeof(*ring));
-       if (!ring)
+       if (!ring) {
+               close(file_fd);
+               free(fi);
                return 1;
-
+               }
        memset(ring, 0, sizeof(struct io_ring));
 
        if (setup_io_uring(ring))
@@ -1060,8 +1064,10 @@ void *allocate_dsa_pasid(void)
 
        wq = mmap(NULL, 0x1000, PROT_WRITE,
                           MAP_SHARED | MAP_POPULATE, fd, 0);
-       if (wq == MAP_FAILED)
+       if (wq == MAP_FAILED) {
+               close(fd);
                perror("mmap");
+       }
 
        return wq;
 }
-- 
2.43.0