Author: cognet
Date: Thu May 17 22:38:16 2018
New Revision: 333771
URL: https://svnweb.freebsd.org/changeset/base/333771
Log:
In vfp_save_state(), don't bother trying to save the VFP registers if the
provided PCB doesn't have a pcb_fpusaved. All PCBs associated to a thread
should have one, but the dumppcb used when panic'ing doesn't.
Modified:
head/sys/arm64/arm64/vfp.c
Modified: head/sys/arm64/arm64/vfp.c
==============================================================================
--- head/sys/arm64/arm64/vfp.c Thu May 17 21:49:34 2018 (r333770)
+++ head/sys/arm64/arm64/vfp.c Thu May 17 22:38:16 2018 (r333771)
@@ -170,6 +170,15 @@ vfp_save_state(struct thread *td, struct pcb *pcb)
KASSERT(pcb != NULL, ("NULL vfp pcb"));
KASSERT(td == NULL || td->td_pcb == pcb, ("Invalid vfp pcb"));
+ /*
+ * savectx() will be called on panic with dumppcb as an argument,
+ * dumppcb doesn't have pcb_fpusaved set so don't make any attempt
+ * to store the VFP registers in it, we probably don't care much
+ * at that point, anyway.
+ */
+ if (pcb->pcb_fpusaved == NULL)
+ return;
+
if (td == NULL)
td = curthread;
_______________________________________________
svn-src-all@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
