Am Di., 28. Okt. 2025 um 09:47 Uhr schrieb Christian Brauner
<brauner@kernel.org>:
>
> by putting the file descriptor into non-blocking mode.
>
> Signed-off-by: Christian Brauner <brauner@kernel.org>
Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
> ---
> tools/testing/selftests/coredump/coredump_test_helpers.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/tools/testing/selftests/coredump/coredump_test_helpers.c b/tools/testing/selftests/coredump/coredump_test_helpers.c
> index 7512a8ef73d3..116c797090a1 100644
> --- a/tools/testing/selftests/coredump/coredump_test_helpers.c
> +++ b/tools/testing/selftests/coredump/coredump_test_helpers.c
> @@ -291,6 +291,14 @@ void process_coredump_worker(int fd_coredump, int fd_peer_pidfd, int fd_core_fil
> int epfd = -1;
> int exit_code = EXIT_FAILURE;
> struct epoll_event ev;
> + int flags;
> +
> + /* Set socket to non-blocking mode for edge-triggered epoll */
> + flags = fcntl(fd_coredump, F_GETFL, 0);
> + if (flags < 0)
> + goto out;
> + if (fcntl(fd_coredump, F_SETFL, flags | O_NONBLOCK) < 0)
> + goto out;
>
> epfd = epoll_create1(0);
> if (epfd < 0)
>
> --
> 2.47.3
>