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Subject[GIT PULL] signal fixes for v5.0-rc6

Linus,

Please pull the for-linus branch from the git tree:

git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git for-linus

HEAD:7146db3317c67b517258cb5e1b08af387da0618b signal: Better detection of synchronous signals

This contains 4 small fixes for signal handling. A missing range check,
a regression fix, prioritizing signals we have already started a signal
group exit for, and better detection of synchronous signals.

The confused decision of which signals to handle failed spectacularly
when a timer was pointed at SIGBUS and the stack overflowed. Resulting
in an unkillable process in an infinite loop instead of a SIGSEGV and
core dump.

Eric W. Biederman (4):
signal: Make siginmask safe when passed a signal of 0
signal: Always attempt to allocate siginfo for SIGSTOP
signal: Always notice exiting tasks
signal: Better detection of synchronous signals

include/linux/signal.h | 2 +-
kernel/signal.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++----
2 files changed, 60 insertions(+), 5 deletions(-)

Eric

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