diff options
| author | Christian Brauner <brauner@kernel.org> | 2025-10-28 09:46:01 +0100 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-11-04 22:04:48 +0100 |
| commit | 305e6b167c596dac4ba9f8b324c973e50aa3025d (patch) | |
| tree | 87a440410602732db58c1c541b150322dd44d5c8 | |
| parent | 8b64f54c81d5baaef7fe117caa2f565be50ba440 (diff) | |
selftests/coredump: handle edge-triggered epoll correctly
by putting the file descriptor into non-blocking mode.
Link: https://patch.msgid.link/20251028-work-coredump-signal-v1-16-ca449b7b7aa0@kernel.org
Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
| -rw-r--r-- | tools/testing/selftests/coredump/coredump_test_helpers.c | 8 |
1 files changed, 8 insertions, 0 deletions
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) |