[PATCH 20/22] selftests/coredump: ignore ENOSPC errors

[Christian Brauner <brauner@kernel.org>]

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.

Signed-off-by: Christian Brauner <brauner@kernel.org>
---
 tools/testing/selftests/coredump/coredump_socket_protocol_test.c | 4 ++++
 tools/testing/selftests/coredump/coredump_socket_test.c          | 5 +++--
 tools/testing/selftests/coredump/coredump_test_helpers.c         | 2 ++
 3 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/coredump/coredump_socket_protocol_test.c b/tools/testing/selftests/coredump/coredump_socket_protocol_test.c
index 566545e96d7f..d19b6717c53e 100644
--- 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 0a37d0456672..da558a0e37aa 100644
--- 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 65deb3cfbe1b..a6f6d5f2ae07 100644
--- 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;

-- 
2.47.3