selftests/coredump: ignore ENOSPC errors

If we crash multiple processes at the same time we may run out of space.
Just ignore those errors. They're not actually all that relevant for the
test.

Link: https://patch.msgid.link/20251028-work-coredump-signal-v1-20-ca449b7b7aa0@kernel.org
Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>

diff --git a/tools/testing/selftests/coredump/coredump_socket_protocol_test.c b/tools/testing/selftests/coredump/coredump_socket_protocol_test.c
index 566545e96d7f8278d3e7377ad4fd1df68057085c..d19b6717c53ef100608b6c9ac24eebb9f812b2bf 100644 (file)
--- a/tools/testing/selftests/coredump/coredump_socket_protocol_test.c
+++ b/tools/testing/selftests/coredump/coredump_socket_protocol_test.c
@@ -184,6 +184,8 @@ TEST_F(coredump, socket_request_kernel)
 
                        bytes_write = write(fd_core_file, buffer, bytes_read);
                        if (bytes_read != bytes_write) {
+                               if (bytes_write < 0 && errno == ENOSPC)
+                                       continue;
                                fprintf(stderr, "socket_request_kernel: write to core file failed (read=%zd, write=%zd): %m\n",
                                        bytes_read, bytes_write);
                                goto out;
@@ -1366,6 +1368,8 @@ TEST_F_TIMEOUT(coredump, socket_multiple_crashing_coredumps, 500)
 
                                bytes_write = write(fd_core_file, buffer, bytes_read);
                                if (bytes_read != bytes_write) {
+                                       if (bytes_write < 0 && errno == ENOSPC)
+                                               continue;
                                        fprintf(stderr, "write failed for fd %d: %m\n", fd_core_file);
                                        goto out;
                                }

diff --git a/tools/testing/selftests/coredump/coredump_socket_test.c b/tools/testing/selftests/coredump/coredump_socket_test.c
index 0a37d0456672084f6a64d9ec143996940ddc0fd2..da558a0e37aaae6c7c92ee465c1c73e74cb1c613 100644 (file)
--- a/tools/testing/selftests/coredump/coredump_socket_test.c
+++ b/tools/testing/selftests/coredump/coredump_socket_test.c
@@ -158,8 +158,9 @@ TEST_F(coredump, socket)
 
                        bytes_write = write(fd_core_file, buffer, bytes_read);
                        if (bytes_read != bytes_write) {
-                               fprintf(stderr, "socket test: write to core file failed (read=%zd, write=%zd): %m\n",
-                                       bytes_read, bytes_write);
+                               if (bytes_write < 0 && errno == ENOSPC)
+                                       continue;
+                               fprintf(stderr, "socket test: write to core file failed (read=%zd, write=%zd): %m\n", bytes_read, bytes_write);
                                goto out;
                        }
                }

diff --git a/tools/testing/selftests/coredump/coredump_test_helpers.c b/tools/testing/selftests/coredump/coredump_test_helpers.c
index 65deb3cfbe1ba5a440d5eb47277fe3a43ae0c7f8..a6f6d5f2ae07a7cf71c098086db1f96dc4bf6bbd 100644 (file)
--- a/tools/testing/selftests/coredump/coredump_test_helpers.c
+++ b/tools/testing/selftests/coredump/coredump_test_helpers.c
@@ -357,6 +357,8 @@ void process_coredump_worker(int fd_coredump, int fd_peer_pidfd, int fd_core_fil
                                        goto done;
                                ssize_t bytes_write = write(fd_core_file, buffer, bytes_read);
                                if (bytes_write != bytes_read) {
+                                       if (bytes_write < 0 && errno == ENOSPC)
+                                               continue;
                                        fprintf(stderr, "Worker: write() failed (read=%zd, write=%zd): %m\n",
                                                bytes_read, bytes_write);
                                        goto out;