diff mbox series

[bpf-next,2/2] selftests/bpf: Free strdup memory in veristat

Message ID ded44f8865cd7f337f52fc5fb0a5fbed7d6bd641.1714374022.git.tanggeliang@kylinos.cn (mailing list archive)
State Accepted
Commit 25927d0a1bec5091d371693c9fdd9640478837de
Delegated to: BPF
Headers show
Series Free strdup memory in selftests | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for bpf-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 8 this patch: 8
netdev/build_tools success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 16 of 16 maintainers
netdev/build_clang success Errors and warnings before: 8 this patch: 8
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 8 this patch: 8
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 14 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
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bpf/vmtest-bpf-next-VM_Test-11 success Logs for s390x-gcc / build / build for s390x with gcc
bpf/vmtest-bpf-next-VM_Test-17 success Logs for s390x-gcc / veristat
bpf/vmtest-bpf-next-VM_Test-29 success Logs for x86_64-llvm-17 / build-release / build for x86_64 with llvm-17 and -O2 optimization
bpf/vmtest-bpf-next-VM_Test-35 success Logs for x86_64-llvm-18 / build / build for x86_64 with llvm-18
bpf/vmtest-bpf-next-VM_Test-36 success Logs for x86_64-llvm-18 / build-release / build for x86_64 with llvm-18 and -O2 optimization
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bpf/vmtest-bpf-next-VM_Test-42 success Logs for x86_64-llvm-18 / veristat
bpf/vmtest-bpf-next-VM_Test-14 success Logs for s390x-gcc / test (test_progs, false, 360) / test_progs on s390x with gcc
bpf/vmtest-bpf-next-VM_Test-9 success Logs for aarch64-gcc / test (test_verifier, false, 360) / test_verifier on aarch64 with gcc
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bpf/vmtest-bpf-next-VM_Test-21 success Logs for x86_64-gcc / test (test_maps, false, 360) / test_maps on x86_64 with gcc
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bpf/vmtest-bpf-next-VM_Test-22 success Logs for x86_64-gcc / test (test_progs, false, 360) / test_progs on x86_64 with gcc
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bpf/vmtest-bpf-next-VM_Test-27 success Logs for x86_64-gcc / veristat / veristat on x86_64 with gcc
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Commit Message

Geliang Tang April 29, 2024, 7:07 a.m. UTC 
From: Geliang Tang <tanggeliang@kylinos.cn>

The strdup() function returns a pointer to a new string which is a
duplicate of the string "input". Memory for the new string is obtained
with malloc(), and need to be freed with free().

This patch adds these missing "free(input)" in parse_stats() to avoid
memory leak in veristat.c.

Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
---
 tools/testing/selftests/bpf/veristat.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Comments

Yonghong Song April 29, 2024, 3:53 p.m. UTC | #1 
On 4/29/24 12:07 AM, Geliang Tang wrote:
> From: Geliang Tang <tanggeliang@kylinos.cn>
>
> The strdup() function returns a pointer to a new string which is a
> duplicate of the string "input". Memory for the new string is obtained
> with malloc(), and need to be freed with free().
>
> This patch adds these missing "free(input)" in parse_stats() to avoid
> memory leak in veristat.c.
>
> Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
John Fastabend April 29, 2024, 7:57 p.m. UTC | #2 
Geliang Tang wrote:
> From: Geliang Tang <tanggeliang@kylinos.cn>
> 
> The strdup() function returns a pointer to a new string which is a
> duplicate of the string "input". Memory for the new string is obtained
> with malloc(), and need to be freed with free().
> 
> This patch adds these missing "free(input)" in parse_stats() to avoid
> memory leak in veristat.c.
> 
> Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
> ---

Acked-by: John Fastabend <john.fastabend@gmail.com>
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/veristat.c b/tools/testing/selftests/bpf/veristat.c
index 244d4996e06e..b2854238d4a0 100644
--- a/tools/testing/selftests/bpf/veristat.c
+++ b/tools/testing/selftests/bpf/veristat.c
@@ -792,10 +792,13 @@  static int parse_stats(const char *stats_str, struct stat_specs *specs)
 
 	while ((next = strtok_r(state ? NULL : input, ",", &state))) {
 		err = parse_stat(next, specs);
-		if (err)
+		if (err) {
+			free(input);
 			return err;
+		}
 	}
 
+	free(input);
 	return 0;
 }