Messages in this thread | | | From | "Eric W. Biederman" <> | Date | Thu, 10 Feb 2022 20:01:25 -0600 | 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
| |