Re: [PATCH 5/5] get_vd_num_of_subarray: fix memleak

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Dear Mariusz,


Am 31.05.22 um 10:11 schrieb Mariusz Tkaczyk:
On Tue, 31 May 2022 14:51:13 +0800 Wu Guanghao wrote:

sra = sysfs_read() should be free before return in
get_vd_num_of_subarray()

Signed-off-by: Wu Guanghao <wuguanghao3@xxxxxxxxxx>
---
  super-ddf.c | 9 +++++++--
  1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/super-ddf.c b/super-ddf.c
index 8cda23a7..827e4ae7 100644
--- a/super-ddf.c
+++ b/super-ddf.c
@@ -1599,15 +1599,20 @@ static unsigned int get_vd_num_of_subarray(struct
supertype *st) sra = sysfs_read(-1, st->devnm, GET_VERSION);
  	if (!sra || sra->array.major_version != -1 ||
  	    sra->array.minor_version != -2 ||
-	    !is_subarray(sra->text_version))
+	    !is_subarray(sra->text_version)) {
+		if (sra)
+			sysfs_free(sra);
  		return DDF_NOTFOUND;
+	}

  	sub = strchr(sra->text_version + 1, '/');
  	if (sub != NULL)
  		vcnum = strtoul(sub + 1, &end, 10);
  	if (sub == NULL || *sub == '\0' || *end != '\0' ||
-	    vcnum >= be16_to_cpu(ddf->active->max_vd_entries))
+	    vcnum >= be16_to_cpu(ddf->active->max_vd_entries)) {
+		sysfs_free(sra);
  		return DDF_NOTFOUND;
+	}

  	return vcnum;
  }

Acked-by:mariusz.tkaczyk@xxxxxxxxxxxxxxx

Thank you for your review. The common format is:

Acked-by: Name <address>


Kind regards,

Paul



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