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kern/55373: kernel diagnostic assertion "semcnt >= 0" failed

>Number:         55373
>Category:       kern
>Synopsis:       kernel diagnostic assertion "semcnt >= 0" failed
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jun 12 15:25:00 +0000 2020
>Originator:     Benny Siegert
>Release:        NetBSD 9.99.64
The NetBSD Foundation
NetBSD 9.99.64 (compiled 2020-06-01) GENERIC64 evbarm-aarch64, on a Pinebook Pro, with NetBSD-9 userland
On a Pinebook Pro running NetBSD 9.99.64 from last Monday (with 9.0
userland), I can reliably make the kernel panic by running "npm
install firebase-tools". During the post-install script (I believe
it's from the protobufjs NPM package), the kernel does

panic: kernel diagnostic assertion "semcnt >= 0" failed: file
"/usr/src/sys/kern/kern_uidinfo.c", line 241

(see the photo at for full output)

This does not fail with NetBSD 9_STABLE on the same machine.

Christos said: "So it must be some newer changes and I suspect the pshared semaphores."
# npm install -g firebase-tools

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