https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=272151
Kyle Evans <kev...@freebsd.org> changed:
What |Removed |Added
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CC| |dcha...@freebsd.org,
| |kev...@freebsd.org,
| |ma...@freebsd.org
--- Comment #1 from Kyle Evans <kev...@freebsd.org> ---
I guess the implication is that we're hitting
https://cgit.freebsd.org/src/tree/sys/kern/kern_event.c#n1732 with a NULL
kn->kn_knlist, in which case the previous kn_list_lock() was effectively a nop
and we're not meeting the invariant described in kqueue(9):
The knlist_*() family of functions are for managing knotes associated
with an object. A knlist is not required, but is commonly used. If
used, the knlist must be initialized with either knlist_init() or
knlist_init_mtx(). The knlist structure may be embedded into the object
structure. *The lock will be held over f_event calls.*
Maybe dchagin@ or markj@ can comment a little further on this one.
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