[Bug 217128] Kernel panic on 11.0-Release when executing files over NFS(AutoFS) before it's automounted

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=217128

--- Comment #2 from Chang, Ching-hao <frank at csie.io> ---
I tried to get a core dump of the kernel panic by setting the dumpdev to AUTO
and dumpdir to /var/crash but still got nothing. My FreeBSD would just freeze
or worse, reboot.

And please let me repharse it a little bit, we have a setuid executable on
local drive as a setuid wrapper which calls execve() to execute a perl script
located on the NFS. And kernel panic occured only when the /net folder is not
automounted. If we list the /net folder (so that the NFS get mounted) and
execute the setuid wrapper then everything is fine.

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