This patch series addresses an issue we encountered on older Ubuntu
20.04.6 LTS servers whereby running Kunit would not return to a prompt
and it would not be possible to Ctrl-C the running session either.

Benjamin Berg (2):
  um: Set parent death signal for winch thread/process
  um: Set parent death signal for userspace process

David Gow (1):
  kunit: tool: Terminate kernel under test on SIGINT

Shuvam Pandey (1):
  kunit: tool: skip stty when stdin is not a tty

Tiwei Bie (5):
  um: Add os_set_pdeathsig helper function
  um: Use os_set_pdeathsig helper in winch thread/process
  um: Set parent-death signal for ubd io thread/process
  um: Set parent-death signal for write_sigio thread/process
  um: Preserve errno within signal handler

 arch/um/drivers/chan_user.c            |  2 ++
 arch/um/drivers/ubd_kern.c             |  1 +
 arch/um/include/shared/os.h            |  2 ++
 arch/um/os-Linux/process.c             |  6 ++++
 arch/um/os-Linux/sigio.c               |  1 +
 arch/um/os-Linux/signal.c              |  3 ++
 arch/um/os-Linux/skas/process.c        |  3 ++
 tools/testing/kunit/kunit_kernel.py    | 39 +++++++++++++++++-------
 tools/testing/kunit/kunit_tool_test.py | 42 ++++++++++++++++++++++++++
 9 files changed, 88 insertions(+), 11 deletions(-)

-- 
2.34.1