From: Malaya Kumar Rout <malayarout91@gmail.com>
To: malayarout91@gmail.com
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Shuah Khan <shuah@kernel.org>,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org
Subject: [PATCH] selftests/x86/lam: fix resource leak in do_uring() and allocate_dsa_pasid()
Date: Tue, 25 Mar 2025 19:04:09 +0530 [thread overview]
Message-ID: <20250325133423.13665-1-malayarout91@gmail.com> (raw)
In-Reply-To: <malayarout91@gmail.com>
Exception branch returns without closing
the file descriptors 'file_fd' and 'fd'
Signed-off-by: Malaya Kumar Rout <malayarout91@gmail.com>
---
tools/testing/selftests/x86/lam.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/tools/testing/selftests/x86/lam.c b/tools/testing/selftests/x86/lam.c
index 18d736640ece..eaba0a921322 100644
--- a/tools/testing/selftests/x86/lam.c
+++ b/tools/testing/selftests/x86/lam.c
@@ -682,7 +682,7 @@ int do_uring(unsigned long lam)
return 1;
if (fstat(file_fd, &st) < 0)
- return 1;
+ goto cleanup;
off_t file_sz = st.st_size;
@@ -690,7 +690,7 @@ int do_uring(unsigned long lam)
fi = malloc(sizeof(*fi) + sizeof(struct iovec) * blocks);
if (!fi)
- return 1;
+ goto cleanup;
fi->file_sz = file_sz;
fi->file_fd = file_fd;
@@ -698,7 +698,7 @@ int do_uring(unsigned long lam)
ring = malloc(sizeof(*ring));
if (!ring) {
free(fi);
- return 1;
+ goto cleanup;
}
memset(ring, 0, sizeof(struct io_ring));
@@ -730,6 +730,9 @@ int do_uring(unsigned long lam)
free(fi);
+cleanup:
+ close(file_fd);
+
return ret;
}
@@ -1189,8 +1192,10 @@ 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
reply other threads:[~2025-03-25 13:34 UTC|newest]
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