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[3/4] selftests: ublk: kublk: ignore SIGCHLD

Message ID 20250325-ublk_timeout-v1-3-262f0121a7bd@purestorage.com
State New
Headers show
Series ublk: improve handling of saturated queues when ublk server exits | expand

Commit Message

Uday Shankar March 25, 2025, 10:19 p.m. UTC 
SIGCHLD from exiting children can arrive during io_uring_wait_cqe and
cause it to return early with -EINTR. Since we don't have a handler for
SIGCHLD, avoid this issue by ignoring SIGCHLD.

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

diff --git a/tools/testing/selftests/ublk/kublk.c b/tools/testing/selftests/ublk/kublk.c
index ded1b93e7913011499ae5dae7b40f0e425982ee4..064a5bb6f12f35892065b8dfacb6f57f6fc16aee 100644
--- a/tools/testing/selftests/ublk/kublk.c
+++ b/tools/testing/selftests/ublk/kublk.c
@@ -890,6 +890,7 @@  static int cmd_dev_add(struct dev_ctx *ctx)
 		exit(-1);
 	}
 
+	signal(SIGCHLD, SIG_IGN);
 	setsid();
 	res = fork();
 	if (res == 0) {