linux-kernel - [PATCH 2/4] selftests: ublk: kublk: fix an error log line

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Message-Id: <20250325-ublk_timeout-v1-2-262f0121a7bd@purestorage.com>
Date: Tue, 25 Mar 2025 16:19:32 -0600
From: Uday Shankar <ushankar@...estorage.com>
To: Ming Lei <ming.lei@...hat.com>, Shuah Khan <shuah@...nel.org>, 
 Jens Axboe <axboe@...nel.dk>
Cc: linux-block@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Uday Shankar <ushankar@...estorage.com>
Subject: [PATCH 2/4] selftests: ublk: kublk: fix an error log line

When doing io_uring operations using liburing, errno is not used to
indicate errors, so the %m format specifier does not provide any
relevant information for failed io_uring commands. Fix a log line
emitted on get_params failure to translate the error code returned in
the cqe->res field instead.

Signed-off-by: Uday Shankar <ushankar@...estorage.com>
---
 tools/testing/selftests/ublk/kublk.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/ublk/kublk.c b/tools/testing/selftests/ublk/kublk.c
index b17eee643b2dbfd59903b61718afcbc21da91d97..ded1b93e7913011499ae5dae7b40f0e425982ee4 100644
--- a/tools/testing/selftests/ublk/kublk.c
+++ b/tools/testing/selftests/ublk/kublk.c
@@ -215,7 +215,7 @@ static void ublk_ctrl_dump(struct ublk_dev *dev)
 
 	ret = ublk_ctrl_get_params(dev, &p);
 	if (ret < 0) {
-		ublk_err("failed to get params %m\n");
+		ublk_err("failed to get params %d %s\n", ret, strerror(-ret));
 		return;
 	}
 

-- 
2.34.1