tree bb14601ab3afbcec3cb8d7d0f207d09cfc792268
parent bc1d72e73be63a7c4a07eb10cf51e91f20bf6076
author Richard Weinberger <richard@nod.at> 1376825408 +0200
committer Richard Weinberger <richard@nod.at> 1378544218 +0200

um: Cleanup SIGTERM handling

Richard reported that some UML processes survive if the UML
main process receives a SIGTERM.
This issue was caused by a wrongly placed signal(SIGTERM, SIG_DFL)
in init_new_thread_signals().
It disabled the UML exit handler accidently for some processes.
The correct solution is to disable the fatal handler for all
UML helper threads/processes.
Such that last_ditch_exit() does not get called multiple times
and all processes can exit due to SIGTERM.

Reported-and-tested-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Richard Weinberger <richard@nod.at>