bug#60226: [mumi] fibers-related crash (accept: Too many open files)

[Maxim Cournoyer <maxim.cournoyer@gmail.com>]

Hello,

MUMI is currently stopped, and the tail of its /var/log/mumi.log says:

--8<---------------cut here---------------start------------->8---
[...]
2022-12-20 19:29:47 GET /apple-touch-icon.png
2022-12-20 19:29:47 GET /favicon.ico
2022-12-20 19:29:47 GET /apple-touch-icon-precomposed.png
2022-12-20 19:29:47 GET /search
2022-12-20 19:30:37 GET Uncaught exception in fiber ##f:
2022-12-20 19:30:37 In fibers/web/server.scm:
2022-12-20 19:30:37     221:4  3 (socket-loop #<input-output: socket 10> #<procedure 7f9…>)
2022-12-20 19:30:37 In ice-9/suspendable-ports.scm:
2022-12-20 19:30:37    733:12  2 (_ #<input-output: socket 10> _)
2022-12-20 19:30:37 In unknown file:
2022-12-20 19:30:37            1 (accept #<input-output: socket 10> 526336)
2022-12-20 19:30:37 In ice-9/boot-9.scm:
2022-12-20 19:30:37   1685:16  0 (raise-exception _ #:continuable? _)
2022-12-20 19:30:37 ice-9/boot-9.scm:1685:16: In procedure raise-exception:
2022-12-20 19:30:37 In procedure accept: Too many open files
--8<---------------cut here---------------end--------------->8---

Perhaps Ricardo or someone else has seen this error before?

I restarted mumi with 'herd restart mumi' on berlin, and it's working again.

-- 
Thanks,
Maxim