Got below error when run "make everything". restripe.c: In function ‘test_stripes’: restripe.c:870:4: error: ignoring return value of ‘read’, declared with attribute warn_unused_result [-Werror=unused-result] read(source[i], stripes[i], chunk_size); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Fix it by check the return value of ‘read’, and free memory in the failure case. Signed-off-by: Guoqing Jiang <guoqing.jiang@xxxxxxxxxxxxxxx> --- restripe.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/restripe.c b/restripe.c index 31b07e8..48c6506 100644 --- a/restripe.c +++ b/restripe.c @@ -867,7 +867,15 @@ int test_stripes(int *source, unsigned long long *offsets, for (i = 0 ; i < raid_disks ; i++) { lseek64(source[i], offsets[i]+start, 0); - read(source[i], stripes[i], chunk_size); + if (read(source[i], stripes[i], chunk_size) != + chunk_size) { + free(q); + free(p); + free(blocks); + free(stripes); + free(stripe_buf); + return -1; + } } for (i = 0 ; i < data_disks ; i++) { int disk = geo_map(i, start/chunk_size, raid_disks, -- 2.17.1