Date: Sun, 1 Oct 2023 09:25:23 -0700 From: bob prohaska <fbsd@www.zefox.net> To: freebsd-arm@freebsd.org Cc: bob prohaska <fbsd@www.zefox.net> Subject: Re: Shutdown -r under -current hangs on RPi3 Message-ID: <ZRmdczYolljhsuqE@www.zefox.net> In-Reply-To: <ZRBTIi28k8dWY5eX@www.zefox.net> References: <0AADDACB-ABA3-47FF-B3A7-05B313F5326C@yahoo.com> <9D29DD48-1572-4C04-AD88-8436AC8DDDCC@yahoo.com> <ZQ85fhHaO3xrfYjK@www.zefox.net> <D384C6AD-4FB0-4130-82E4-B923E1404401@yahoo.com> <ZQ9mFBvBP7rCqj6W@www.zefox.net> <B39FB168-7A0E-4E71-AA90-10D267307975@yahoo.com> <ZQ%2BNKZuvMwQteoCE@www.zefox.net> <88F77A9A-F3BB-4FEA-8330-EC5992D7B36B@yahoo.com> <ZQ%2BhlTcZMhaRD2hi@www.zefox.net> <ZRBTIi28k8dWY5eX@www.zefox.net>
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On Sun, Sep 24, 2023 at 08:17:54AM -0700, bob prohaska wrote:
>
> It appears that setting
> debug.bootverbose=1
> suppresses the otherwise-persistent
> Khelp module "ertt" can't unload until its refcount drops from 1 to 0.
> message during shutdown. No new output either, apart from the swap
> removal notice.
>
> So far, the few shutdown -r experiments tried have not gotten stuck,
> even after an OS build/install cycle.
Another shutdown hang has been observed with -current on a Pi3.
This time bootverbose was on, as was ucom debug. This machine
has an FTDI usb-serial adaper.
The serial console reported:
*** FINAL System shutdown message from bob@pelorus.zefox.org ***
System going down IMMEDIATELY
Oct 1 08:21:26 pelorus shutdown[78571]: reboot by bob:
Stopping sshd.
Waiting for PIDS: 1063.
Stopping cron.
Waiting for PIDS: 1073.
Stopping powerd.
Waiting for PIDS: 1002.
Stopping devd.
Waiting for PIDS: 752.
Writing entropy file: .
Writing early boot entropy file: .
.
Terminated
ucom_inwakeup: tp=0xffffa00021cc1c00
ucom_ioctl: cmd = 0x2000740e
ucom_inwakeup: tp=0xffffa00021cc1c00
ucom_inwakeup: tp=0xffffa00021cc1c00
ucom_close: tp=0xffffa00021cc1c00
ucom_shutdown:
ucom_dtr: onoff = 0
ucom_line_state: on=0x00, off=0x01
ucom_rts: onoff = 1
ucom_line_state: on=0x02, off=0x00
Oct 1 08:21:32 pelorus ucom_cfg_close:
syslogd: exiting on signal 15
Waiting (max 60 seconds) for system process `vnlru' to stop... done
Waiting (max 60 seconds) for system process `syncer' to stop...
Syncing disks, vnodes remaining... 0 0 0 done
All buffers synced.
Swap device da0s2b removed.
Uptime: 3d0h14m47s
Resetting system ...
Both Ethernet LEDs turned off, if that's significant.
After about half an hour, I pulled the plug. The machine
came up hands-off.
Thanks for reading,
bob prohaska
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