From: Emanuele Rocca Date: Mon, 23 Mar 2026 13:25:17 +0100 Subject: [PATCH v4 0/2] pidfds: add coredump_code field to pidfd_info This patchs series adds a new field called coredump_code to struct pidfd_info, as well as the relevant selftests. Note that the coredump selftests are currently not passing, and the following patch is needed to fix them: https://lore.kernel.org/lkml/ab2kI0PI_Vk6bU88@NH27D9T0LF/ I have not included it in this series as it is not directly related to the coredump_code changes. v1: https://lore.kernel.org/lkml/ab29J6KsQm8Xg3LR@NH27D9T0LF/ v2: Add coredump_pad to struct pidfd_info to ensure the struct has the same size on both 64 bit and 32 bit systems. The issue was spotted by the kernel test robot. https://lore.kernel.org/lkml/202603211842.JCwUVYTI-lkp@intel.com/ https://lore.kernel.org/lkml/ab68fUmCK4An1UH-@NH27D9T0LF/ v3: Sending as a new thread, same as v2 otherwise. https://lore.kernel.org/lkml/acBRj-DSCpqlKt6t@NH27D9T0LF/ v4: Split kernel code from selftest code as suggested by Christian Brauner. Add Acked-by: Oleg Nesterov to the commit adding the coredump_code field. Thanks! https://lore.kernel.org/lkml/20260323-hochsehen-kurort-862912a1d7b5@brauner/ https://lore.kernel.org/lkml/acEoVeBaP7bQRHLT@redhat.com/ Emanuele Rocca (2): pidfds: add coredump_code field to pidfd_info selftests: check pidfd_info->coredump_code correctness fs/pidfs.c | 12 ++++--- include/uapi/linux/pidfd.h | 4 +++ .../coredump/coredump_socket_protocol_test.c | 26 +++++++++++++++ .../selftests/coredump/coredump_socket_test.c | 32 +++++++++++++++++++ .../coredump/coredump_test_helpers.c | 4 +-- tools/testing/selftests/pidfd/pidfd.h | 5 +++ .../testing/selftests/pidfd/pidfd_info_test.c | 1 + 7 files changed, 78 insertions(+), 6 deletions(-) -- 2.47.3