Date: Tue, 10 Dec 2013 23:06:06 +0100 From: Andreas Tobler <andreast@FreeBSD.org> To: Larry Rosenman <ler@lerctr.org>, Aleksandr Rybalko <ray@FreeBSD.org> Cc: freebsd-current@FreeBSD.org Subject: Re: panic with -CURRENT @Boot [r259130] Message-ID: <52A7904E.1040100@FreeBSD.org> In-Reply-To: <0c6229e29c448e1940d75e75d41a65a6@webmail.lerctr.org> References: <20131209163634.GA1471@borg.lerctr.org> <20131210000430.0cff80c1.ray@freebsd.org> <0c6229e29c448e1940d75e75d41a65a6@webmail.lerctr.org>
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On 10.12.13 03:52, Larry Rosenman wrote:
> On 2013-12-09 16:04, Aleksandr Rybalko wrote:
>> On Mon, 9 Dec 2013 10:36:34 -0600
>> Larry Rosenman <ler@lerctr.org> wrote:
>>
>>>
>>> Path: .
>>> Working Copy Root Path: /usr/src
>>> URL: svn://svn.freebsd.org/base/head
>>> Relative URL: ^/head
>>> Repository Root: svn://svn.freebsd.org/base
>>> Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
>>> Revision: 259130
>>> Node Kind: directory
>>> Schedule: normal
>>> Last Changed Author: ray
>>> Last Changed Rev: 259130
>>> Last Changed Date: 2013-12-09 09:28:34 -0600 (Mon, 09 Dec 2013)
>>>
>> [[cut]]
>>
>> Can you please share core and kernel with modules.
>> I'm not sure, but looks like it is related to vt (newcons).
>> So I have to investigate.
>>
>> Thanks!
>>
>> WBW
> I've passed ray@ credentials to get at the core/kernel/etc on the system
> that generated it.
I have a +2, the same panic as Larry plus another one on my Thinkpads.
The second panic looks like this:
Fatal trap 9: general protection fault while in kernel mode
cpuid = 0; apic id = 00
instruction pointer = 0x20:0xffffffff807b8147
stack pointer = 0x28:0xfffffe00dd97f8e0
frame pointer = 0x28:0x333231302f2e2d2c
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 1132 (vidcontrol)
I 'fixed' this with the attached patch. I have to test tomorrow if the
first panic (the one Larry sees) on my Dell also goes away with this 'fix'.
I compared with syscons.c and there the ival/data assigment is always
done inside the case label and not at the end.
maybe I'm papering over ... but at least a starting point to investigate.
Andreas
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Index: dev/vt/vt_core.c
===================================================================
--- dev/vt/vt_core.c (revision 259154)
+++ dev/vt/vt_core.c (working copy)
@@ -1294,37 +1295,55 @@
switch (cmd) {
case _IO('v', 4):
cmd = VT_RELDISP;
+ ival = IOCPARM_IVAL(data);
+ data = (caddr_t)&ival;
break;
case _IO('v', 5):
cmd = VT_ACTIVATE;
+ ival = IOCPARM_IVAL(data);
+ data = (caddr_t)&ival;
break;
case _IO('v', 6):
cmd = VT_WAITACTIVE;
+ ival = IOCPARM_IVAL(data);
+ data = (caddr_t)&ival;
break;
case _IO('K', 20):
cmd = KDSKBSTATE;
+ ival = IOCPARM_IVAL(data);
+ data = (caddr_t)&ival;
break;
case _IO('K', 67):
cmd = KDSETRAD;
+ ival = IOCPARM_IVAL(data);
+ data = (caddr_t)&ival;
break;
case _IO('K', 7):
cmd = KDSKBMODE;
+ ival = IOCPARM_IVAL(data);
+ data = (caddr_t)&ival;
break;
case _IO('K', 8):
cmd = KDMKTONE;
+ ival = IOCPARM_IVAL(data);
+ data = (caddr_t)&ival;
break;
case _IO('K', 63):
cmd = KIOCSOUND;
+ ival = IOCPARM_IVAL(data);
+ data = (caddr_t)&ival;
break;
case _IO('K', 66):
cmd = KDSETLED;
+ ival = IOCPARM_IVAL(data);
+ data = (caddr_t)&ival;
break;
case _IO('c', 110):
cmd = CONS_SETKBD;
+ ival = IOCPARM_IVAL(data);
+ data = (caddr_t)&ival;
break;
}
- ival = IOCPARM_IVAL(data);
- data = (caddr_t)&ival;
#endif
switch (cmd) {
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