| Date | Tue, 15 Feb 2022 11:11:50 +0100 | From | Michal Koutný <> | Subject | Re: [RFC PATCH 0/6] RLIMIT_NPROC in ucounts fixups |
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On Sat, Feb 12, 2022 at 03:32:30PM +0000, Etienne Dechamps <etienne@edechamps.fr> wrote: > I'm not sure I understand everything that's going on in this thread but it > does seem very relevant. You guys might want to double-check the behavior in > the particular scenario described there. I'm mostly sending this to make > sure everything is cross-linked.
Thanks for the report with strace.
AFAICT, it's caused by setresuid() after unshare(), i.e. all root's tasks are (wrongly) compared against the lowered RLIMIT_NPROC.
This is tackled by my RFC patch 2/6 [1] or Eric's variant but 3/8 (equivalent fix for this case but I haven't run that build).
Michal
[1] I could run your test (LimitNPROC=1 actually) against kernel with my patches and the service starts.
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