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    Subject[PATCH 0/8] ucounts: RLIMIT_NPROC fixes

    Michal Koutný recently found some bugs in the enforcement of
    RLIMIT_NPROC in the recent ucount rlimit implementation.

    I saw some additional bugs and some cleaner ways to fix the problem so
    instead of starting with his fixes these are my own.

    I am aiming to send the first 5 of these to Linus once they have been
    reviewed. Two more are fixes in principle but I don't think do anything
    in practice. The last one is just a cleanup to prevent future
    divergence of RLIMIT_NPROC logic.

    Eric W. Biederman (8):
    ucounts: Fix RLIMIT_NPROC regression
    ucounts: Fix set_cred_ucounts
    ucounts: Fix and simplify RLIMIT_NPROC handling during setuid()+execve
    ucounts: Only except the root user in init_user_ns from RLIMIT_NPROC
    ucounts: Handle wrapping in is_ucounts_overlimit
    ucounts: Handle inc_rlimit_ucounts wrapping in fork
    rlimit: For RLIMIT_NPROC test the child not the parent for capabilites
    ucounts: Use the same code to enforce RLIMIT_NPROC in fork and exec

    fs/exec.c | 12 +++++-------
    include/linux/sched.h | 2 +-
    include/linux/sched/signal.h | 2 ++
    kernel/cred.c | 24 +++++++++++-------------
    kernel/fork.c | 32 ++++++++++++++++++++++++--------
    kernel/sys.c | 14 --------------
    kernel/ucount.c | 3 ++-
    kernel/user_namespace.c | 2 ++
    8 files changed, 47 insertions(+), 44 deletions(-)

    Eric

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