Hi All,
This series adds capabilities support for clone3 syscall along with set of testcases in morello clone kselftests.
Changes available at: https://git.morello-project.org/Bea/linux/-/tree/morello/clone3_v5 LTP changes: https://git.morello-project.org/Bea/morello-linux-ltp/-/tree/morello/clone3 To run clone3 tests: ./runltp -f syscalls -s clone3
v5: [PATCH 3/3] - improved handling of default size for clone3 args - fixed alignment in code layout - dropped redundant cast v4: [PATCH 1/3] - fixed commit message referring to the wrong copy routine [PATCH 3/3] - dropped setting default size for clone3 args - dropped stale comment regarding re-using bits from clone_args flags - switched ASSERT_FALSE to ASSERT_EQ when comparing pids in child process - added caching tls value to safely unmap memory - added validation for both clone stack and tls - switch from clone_args-> tls to actual thread data when checking for tag in cloned process v3: [PATCH 1/3]: - updated commit message to reflect actual changes [PATCH 2/3]: - fixed type casting and sizes for copy routines - swapped order of args for clone_args_size_ver [PATCH 3/3]: - added dedicated field for test custom flags instead of 'borrowing' one from clone_args struct - added test for stack before calling munmap in failing test cases - switched to WSTOPPED for waitid call v2: - add copy_struct_from_user_with_ptr variant - drop explicit padding from clone_args struct - switch __alignof__ to sizeof for struct sizing conditions - use __clone_args_size_ver macro when validating struct layout - cache the current compat mode instead of relying on compiler optimizations - drop use of as_user_ptr in favour of explicit casting - use clone_args struct directly for kselftest test fixture - add signalling to better handle dependencies between test threads
Beata Michalska (3): uaccess: Preserve capability tags with copy_struct_from_user_with_ptr fork: clone3: Add support for architectural capabilities kselftests/arm64: morello: Add clone3 test-cases
include/linux/uaccess.h | 60 ++++- include/uapi/linux/sched.h | 30 ++- kernel/fork.c | 139 ++++++++--- .../testing/selftests/arm64/morello/Makefile | 1 + tools/testing/selftests/arm64/morello/clone.c | 223 +++++++++++++++++- 5 files changed, 401 insertions(+), 52 deletions(-)