[Bug 268711] ports-mgmt/pkg pkg-update(8) and Electron-based applications fail when /tmp is from tmpmfs="YES" in rc.conf(5)

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268711

--- Comment #4 from Graham Perrin <grahamperrin@freebsd.org> ---
Created attachment 239207
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=239207&action=edit
Screenshot: Chromium: Can't open this page

chrome://newtab

Second tab

> Can't open this page
> 
> …
> 
> Error code: 5

… and so on. All new tabs failed. 

In most cases, split-second visible appearance of new tab content (e.g. the
Google search page) is followed by disappearance with a snap (5) or can't open
(5). 

In other cases, I could not observe any new tab content before the error code
appeared. Maybe appearance and disappearance occurred too fast for my eye to
see. 

Sometimes: a click on the 'Reload' button was followed by unexpected closure of
the window (all tabs). 

I don't recall as many closures as are logged below, so I guess that each exit
on signal 5 (a crash?) was for a chrome://newtab failure. 

root@fuji:~ # zgrep chrome /var/log/messages.0.bz2
root@fuji:~ # grep chrome /var/log/messages
Jan  2 11:14:17 fuji kernel: pid 1190 (chrome), jid 0, uid 1001: exited on
signal 5
Jan  2 11:15:13 fuji kernel: pid 1211 (chrome), jid 0, uid 1001: exited on
signal 5
Jan  2 11:15:18 fuji kernel: pid 1213 (chrome), jid 0, uid 1001: exited on
signal 5
Jan  2 11:15:27 fuji kernel: pid 1215 (chrome), jid 0, uid 1001: exited on
signal 5
Jan  2 11:15:38 fuji kernel: pid 1217 (chrome), jid 0, uid 1001: exited on
signal 5
Jan  2 11:15:44 fuji kernel: pid 1174 (chrome), jid 0, uid 1001: exited on
signal 5
Jan  2 11:15:51 fuji kernel: pid 1226 (chrome), jid 0, uid 1001: exited on
signal 5
Jan  2 11:16:00 fuji kernel: pid 1243 (chrome), jid 0, uid 1001: exited on
signal 5
Jan  2 11:17:03 fuji kernel: pid 1247 (chrome), jid 0, uid 1001: exited on
signal 5
Jan  2 11:17:11 fuji kernel: pid 1249 (chrome), jid 0, uid 1001: exited on
signal 5
Jan  2 11:17:32 fuji kernel: pid 1220 (chrome), jid 0, uid 1001: exited on
signal 5
Jan  2 11:17:50 fuji kernel: pid 1272 (chrome), jid 0, uid 1001: exited on
signal 5
Jan  2 11:17:56 fuji kernel: pid 1278 (chrome), jid 0, uid 1001: exited on
signal 5
Jan  2 11:18:00 fuji kernel: pid 1280 (chrome), jid 0, uid 1001: exited on
signal 5
Jan  2 11:18:04 fuji kernel: pid 1283 (chrome), jid 0, uid 1001: exited on
signal 5
Jan  2 11:18:07 fuji kernel: pid 1285 (chrome), jid 0, uid 1001: exited on
signal 5
Jan  2 11:18:09 fuji kernel: pid 1287 (chrome), jid 0, uid 1001: exited on
signal 5
Jan  2 11:18:11 fuji kernel: pid 1291 (chrome), jid 0, uid 1001: exited on
signal 5
Jan  2 11:18:13 fuji kernel: pid 1293 (chrome), jid 0, uid 1001: exited on
signal 5
root@fuji:~ # 

----

Workaround: cease using tmpmfs.

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