Re: reboot panic: "error == EOPNOTSUPP" in vfs_vnode.c line 1120

[mlelstv%serpens.de@localhost (Michael van Elst)]

mrg%eterna.com.au@localhost (matthew green) writes:

>while rebooting a quartz64 with a usb attached disk that just
>had a about 3.5GB of data written to it, i the umass gave some
>errorse and then i got a panic shortly later:

>[ 6179.6038961] Skipping crash dump on recursive panic
>[ 6179.6038961] panic: kernel diagnostic assertion "error =3D=3D EOPNOTSUP=
>P" failed: file "/usr/src/sys/kern/vfs_vnode.c", line 1120 =

genfs_suspendctl() may return ENOENT if IMNT_GONE is set in mnt_iflag.
I'm not sure if mnt_iflag is even protected against concurrent access
but vrevoke() racing with dounmount() might be enough.