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authorMing Lei <ming.lei@redhat.com>2026-01-13 16:58:02 +0800
committerJens Axboe <axboe@kernel.dk>2026-01-21 07:54:55 -0700
commite7e1cc18f120a415646be12470169a978a1adcd9 (patch)
tree9330a921942b997afccdc2931ab88cda72f09424 /tools
parent23e62cf75518825aac12e9a22bdc40f062428898 (diff)
selftests/ublk: fix garbage output in foreground mode
Initialize _evtfd to -1 in struct dev_ctx to prevent garbage output when running kublk in foreground mode. Without this, _evtfd is zero-initialized to 0 (stdin), and ublk_send_dev_event() writes binary data to stdin which appears as garbage on the terminal. Also fix debug message format string. Fixes: 6aecda00b7d1 ("selftests: ublk: add kernel selftests for ublk") Signed-off-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Caleb Sander Mateos <csander@purestorage.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools')
-rw-r--r--tools/testing/selftests/ublk/kublk.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/testing/selftests/ublk/kublk.c b/tools/testing/selftests/ublk/kublk.c
index 65f59e7b6972..f197ad9cc262 100644
--- a/tools/testing/selftests/ublk/kublk.c
+++ b/tools/testing/selftests/ublk/kublk.c
@@ -1274,7 +1274,7 @@ static int __cmd_dev_add(const struct dev_ctx *ctx)
}
ret = ublk_start_daemon(ctx, dev);
- ublk_dbg(UBLK_DBG_DEV, "%s: daemon exit %d\b", ret);
+ ublk_dbg(UBLK_DBG_DEV, "%s: daemon exit %d\n", __func__, ret);
if (ret < 0)
ublk_ctrl_del_dev(dev);
@@ -1620,6 +1620,7 @@ int main(int argc, char *argv[])
int option_idx, opt;
const char *cmd = argv[1];
struct dev_ctx ctx = {
+ ._evtfd = -1,
.queue_depth = 128,
.nr_hw_queues = 2,
.dev_id = -1,