Author: markj
Date: Wed Nov 28 17:40:08 2018
New Revision: 341157
URL: https://svnweb.freebsd.org/changeset/base/341157
Log:
MFstable/12 r341077:
Lock the knlist before releasing the in-flux state in knote_fork().
PR: 228858
Approved by: re (gjb)
Modified:
releng/12.0/sys/kern/kern_event.c
Directory Properties:
releng/12.0/ (props changed)
Modified: releng/12.0/sys/kern/kern_event.c
==============================================================================
--- releng/12.0/sys/kern/kern_event.c Wed Nov 28 17:37:17 2018
(r341156)
+++ releng/12.0/sys/kern/kern_event.c Wed Nov 28 17:40:08 2018
(r341157)
@@ -603,10 +603,10 @@ knote_fork(struct knlist *list, int pid)
kn->kn_fflags |= NOTE_TRACKERR;
if (kn->kn_fop->f_event(kn, NOTE_FORK))
KNOTE_ACTIVATE(kn, 0);
+ list->kl_lock(list->kl_lockarg);
KQ_LOCK(kq);
kn_leave_flux(kn);
KQ_UNLOCK_FLUX(kq);
- list->kl_lock(list->kl_lockarg);
}
list->kl_unlock(list->kl_lockarg);
}
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