Date: Thu, 06 Mar 2014 08:07:45 +0100 From: Hans Petter Selasky <hps@bitfrost.no> To: FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Fwd: KASSERT in vm_map.c Message-ID: <53181EC1.90103@bitfrost.no> In-Reply-To: <530EFC76.9010302@bitfrost.no> References: <530EFC76.9010302@bitfrost.no>
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FYI
-------- Original Message --------
Subject: KASSERT in vm_map.c
Date: Thu, 27 Feb 2014 09:51:02 +0100
From: Hans Petter Selasky <hps@bitfrost.no>
To: Konstantin Belousov <kib@FreeBSD.org>
Hi,
Using 9-stable I hit a KASSERT when EHCI is loading:
--- a/sys/vm/vm_map.c
+++ b/sys/vm/vm_map.c
@@ -2301,9 +2301,11 @@ vm_map_unwire(vm_map_t map, vm_offset_t start,
vm_offset_t end,
* Mark the entry in case the map lock is released. (See
* above.)
*/
+#if 0
KASSERT((entry->eflags & MAP_ENTRY_IN_TRANSITION) == 0 &&
entry->wiring_thread == NULL,
("owned map entry %p", entry));
+#endif
entry->eflags |= MAP_ENTRY_IN_TRANSITION;
entry->wiring_thread = curthread;
/*
Is the KASSERT() wrong or is my USB code wrong.
Simply add to GENERIC:
> +options INVARIANTS # Enable calls of extra sanity checking
> +options INVARIANT_SUPPORT # Extra sanity checks of internal structures, required by INVARIANTS
> +options WITNESS # Enable checks to detect deadlocks and cycles
> +options WITNESS_SKIPSPIN # Don't run witness on spinlocks for speed
> +
Should be trivial to reproduce.
Thank you!
--HPS
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