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Date:      Mon, 29 Mar 2021 22:57:09 +0300
From:      Christos Chatzaras <chris@cretaforce.gr>
To:        FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org>
Cc:        "gjb@freebsd.org" <gjb@FreeBSD.org>, "jtl@freebsd.org" <jtl@FreeBSD.org>, kib@freebsd.org
Subject:   FreeBSD 13.0-RC4 and Nginx process "stuck" during restart
Message-ID:  <94CCFC59-B381-40B1-8F85-F86D87A16B53@cretaforce.gr>

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Hello,


I upgrade from 12.2 to 13.0-RC4 and I notice a strange issue with Nginx.

When I run "service nginx restart" in some (random) servers it doesn't complete the restart and it "stucks" at "Waiting for PIDS: 20536." .

I can kill the 20536 process and then restart completes.


procstat -kk 20536:

  PID    TID COMM                TDNAME              KSTACK
63094 100505 nginx               -                   mi_switch+0xc1 sleepq_catch_signals+0x2e6 sleepq_wait_sig+0x9 _sleep+0x1be kern_sigsuspend+0x164 sys_sigsuspend+0x31 amd64_syscall+0x10c fast_syscall_common+0xf8 


I found this commit:

https://cgit.freebsd.org/src/commit/?id=dbec10e08808e375365fb2a2462f306e0cdfda32 <https://cgit.freebsd.org/src/commit/?id=dbec10e08808e375365fb2a2462f306e0cdfda32>;

Could this be related? If yes can we have the patch in releng/13.0 ?


Kind regards,
Christos Chatzaras

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