Hi,
I tried running PC-BSD 9.1 on an HP Elitebook 8460p laptop (
http://h10010.www1.hp.com/wwpc/pscmi...oks/8460p.html ).
See the screenshot I posted here:
http://forums.pcbsd.org/showthread.php?t=20001
In PC-BSD, the default kernel comes with VIMAGE enabled in the kernel
config.
The problem I encountered seems to be caused by problems
with the FreeBSD kernel with VIMAGE + bluetooth.
I've seen similar threads being posted here:
VIMAGE crashes on 9.x with hotplug net80211 devices
http://lists.freebsd.org/pipermail/freebsd-hackers/2012-October/040784.html
Panic in netgraph with VIMAGE
http://lists.freebsd.org/pipermail/freebsd-virtualization/2009-May/000325.html
Doing some kernel debugging, I got this stack trace:
#0 doadump (textdump=value optimized out) at pcpu.h:234
#1 0x80923e86 in kern_reboot (howto=260) at
/usr/home/rodrigc/freebsd/9/sys/kern/kern_shutdown.c:449
#2 0x80924387 in panic (fmt=0x1 Address 0x1 out of bounds) at
/usr/home/rodrigc/freebsd/9/sys/kern/kern_shutdown.c:637
#3 0x80ce97f0 in trap_fatal (frame=0xc, eva=value optimized out)
at /usr/home/rodrigc/freebsd/9/sys/amd64/amd64/trap.c:879
#4 0x80ce9b51 in trap_pfault (frame=0xff811e2b7700, usermode=0)
at /usr/home/rodrigc/freebsd/9/sys/amd64/amd64/trap.c:795
#5 0x80cea104 in trap (frame=0xff811e2b7700) at
/usr/home/rodrigc/freebsd/9/sys/amd64/amd64/trap.c:463
#6 0x80cd3433 in calltrap () at
/usr/home/rodrigc/freebsd/9/sys/amd64/amd64/exception.S:228
#7 0x81cc0bbd in ng_make_node_common (type=0x81cb6000,
nodepp=0xfe0124d9c310)
at
/usr/home/rodrigc/freebsd/9/sys/modules/netgraph/netgraph/../../../netgraph/ng_base.c:669
#8 0x81cb320e in ubt_attach (dev=0xfe01041f1d00)
at
/usr/home/rodrigc/freebsd/9/sys/modules/netgraph/bluetooth/ubt/../../../../netgraph/bluetooth/drivers/ubt/ng_ubt.c:461
#9 0x80956c9c in device_attach (dev=0xfe01041f1d00) at
device_if.h:180
#10 0x8078a61e in usb_probe_and_attach (udev=0xfe012458,
iface_index=value optimized out)
at /usr/home/rodrigc/freebsd/9/sys/dev/usb/usb_device.c:1183
#11 0x80792c4e in uhub_explore (udev=0xfe000900c000) at
/usr/home/rodrigc/freebsd/9/sys/dev/usb/usb_hub.c:272
#12 0x80792c74 in uhub_explore (udev=0xfe0007ee2000) at
/usr/home/rodrigc/freebsd/9/sys/dev/usb/usb_hub.c:286
#13 0x8077ce46 in usb_bus_explore (pm=value optimized out) at
/usr/home/rodrigc/freebsd/9/sys/dev/usb/controller/usb_controller.c:359
#14 0x80796da3 in usb_process (arg=value optimized out) at
/usr/home/rodrigc/freebsd/9/sys/dev/usb/usb_process.c:169
#15 0x808f1cef in fork_exit (callout=0x80796cd0
usb_process, arg=0xff8001c3cdb0, frame=0xff811e2b7b00)
at /usr/home/rodrigc/freebsd/9/sys/kern/kern_fork.c:988
#16 0x80cd395e in fork_trampoline () at
/usr/home/rodrigc/freebsd/9/sys/amd64/amd64/exception.S:602
#17 0x in ?? ()
and the error occurred on line 669 in ng_base.c:
#7 0x81cc0bbd in ng_make_node_common (type=0x81cb6000,
nodepp=0xfe0124d9c310)
at
/usr/home/rodrigc/freebsd/9/sys/modules/netgraph/netgraph/../../../netgraph/ng_base.c:669
669 node-nd_ID = V_nextID++; /* 137/sec for 1 year before wrap */
(kgdb) l
664
665 /* Get an ID and put us in the hash chain. */
666 IDHASH_WLOCK();
667 for (; { /* wrap protection, even if silly */
668 node_p node2 = NULL;
669 node-nd_ID = V_nextID++; /* 137/sec for 1 year before wrap */
670
671 /* Is there a problem with the new number? */
672 NG_IDHASH_FIND(node-nd_ID, node2); /* already taken? */
673 if ((node-nd_ID != 0) (node2 == NULL)) {
It turns out that when VIMAGE is defined in the kernel, V_nextID is not an
int any more,
it is a macro. line 669 expands to something that looks like:
node-nd_ID = (*(__typeof(vnet_entry_nextID)*)
(__curthread())-td_vnet))-vnet_data_base) +
(uintptr_t)vnet_entry_nextID))++;
On my system, td_vnet was not initialized, so that was causing the kernel
panic.
Is the attached patch OK to commit to -CURRENT, and then after some time
MFC to stable/9?
With this patch, my system can boot with VIMAGE enabled in the kernel and
it does not crash.
--
Craig
Index: bluetooth/drivers/ubt/ng_ubt.c
===
--- bluetooth/drivers/ubt/ng_ubt.c (revision 252218)
+++ bluetooth/drivers/ubt/ng_ubt.c (working copy)
@@ -109,7 +109,9 @@
#include sys/unistd.h
#include sys/callout.h
#include sys/malloc.h
+#include sys/jail.h
#include sys/priv.h
+#include sys/proc.h
#include usbdevs.h
#include dev/usb/usb.h
@@ -123,6 +125,7 @@
#include sys/mbuf.h
#include sys/taskqueue.h
+#include net/vnet.h
#include netgraph/ng_message.h
#include netgraph/netgraph.h
#include netgraph/ng_parse.h
@@ -453,13 +456,14 @@
sc-sc_dev = dev;
sc-sc_debug = NG_UBT_WARN_LEVEL;
-
+ CURVNET_SET(TD_TO_VNET(curthread));
/*
* Create Netgraph node
