NetBSD Problem Report #50185

From martin@duskware.de  Mon Aug 31 20:37:12 2015
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Date: Mon, 31 Aug 2015 22:37:09 CEST
From: martin@NetBSD.org
Reply-To: martin@NetBSD.org
To: gnats-bugs@NetBSD.org
Subject: dwctwo attach failure
X-Send-Pr-Version: 3.95

>Number:         50185
>Category:       kern
>Synopsis:       dwctwo attach failure
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    skrll
>State:          closed
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Aug 31 20:40:00 +0000 2015
>Closed-Date:    Thu Nov 05 10:39:53 +0000 2015
>Last-Modified:  Thu Nov 05 10:39:53 +0000 2015
>Originator:     Martin Husemann
>Release:        NetBSD 7.99.21
>Organization:
The NetBSD Foundation, Inc.
>Environment:

ERLITE evbmips64

>Description:

After recent dwctwo update, ERLITE does not boot any more:

dwctwo0 at iobus0 address 0x0001180068000000
panic: kernel diagnostic assertion "xc_tailp < xc->xc_headp" failed: file "../../../../kern/subr_xcall.c", line 280 
kernel: breakpoint trap
Stopped in pid 0.1 (system) at  netbsd:cpu_Debugger+0x4:        jr      ra
                bdslot: nop
db> bt
0x90000000000bea80: cpu_Debugger+4 (63061,9001180000000800,6,ffffffff805329f0) r
a ffffffff8039dcac sz 0
0x90000000000bea80: vpanic+15c (63061,9001180000000800,6,ffffffff805329f0) ra ff
ffffff80475dc8 sz 64
0x90000000000beac0: kern_assert+48 (63061,ffffffff80493880,ffffffff804b6520,ffff
ffff804b6470) ra ffffffff803a487c sz 96
0x90000000000beb20: xc_broadcast+25c (63061,ffffffff80493880,ffffffff804b6520,ff
ffffff804b6470) ra ffffffff802d392c sz 80
0x90000000000beb70: softint_disestablish+84 (63061,ffffffff80493880,ffffffff804b
6520,ffffffff804b6470) ra ffffffff80222184 sz 80
0x90000000000bebc0: dwc2_init+18c (63061,ffffffff80493880,ffffffff804b6520,fffff
fff804b6470) ra ffffffff8034cf38 sz 160
0x90000000000bec60: octeon_dwc2_attach+938 (63061,ffffffff80493880,ffffffff804b6
520,ffffffff804b6470) ra ffffffff8038474c sz 32
0x90000000000bec80: config_attach_loc+1b4 (63061,ffffffff80493880,ffffffff804b65
20,ffffffff804b6470) ra ffffffff80351c44 sz 64
0x90000000000becc0: iobus_attach+174 (63061,ffffffff80493880,ffffffff804b6520,ff
ffffff804b6470) ra ffffffff8038474c sz 144
0x90000000000bed50: config_attach_loc+1b4 (63061,ffffffff80493880,ffffffff804b65
20,ffffffff804b6470) ra ffffffff802e81b8 sz 64
0x90000000000bed90: mainbus_attach+a0 (63061,ffffffff80493880,ffffffff804b6520,f
fffffff804b6470) ra ffffffff8038474c sz 80

>How-To-Repeat:
Try to boot evbmips64 on ERLITE

>Fix:
n/a

>Release-Note:

>Audit-Trail:

Responsible-Changed-From-To: kern-bug-people->skrll
Responsible-Changed-By: skrll@NetBSD.org
Responsible-Changed-When: Mon, 31 Aug 2015 21:32:01 +0000
Responsible-Changed-Why:
Take


From: Nick Hudson <skrll@netbsd.org>
To: gnats-bugs@NetBSD.org, kern-bug-people@netbsd.org, 
 gnats-admin@netbsd.org, netbsd-bugs@netbsd.org
Cc: 
Subject: Re: kern/50185: dwctwo attach failure
Date: Tue, 01 Sep 2015 07:46:56 +0100

 On 08/31/15 21:40, martin@NetBSD.org wrote:

 >> Number:         50185
 >> Category:       kern
 >> Synopsis:       dwctwo attach failure
 >> Confidential:   no
 >> Severity:       critical
 >> Priority:       high
 >> Responsible:    kern-bug-people
 >> State:          open
 >> Class:          sw-bug
 >> Submitter-Id:   net
 >> Arrival-Date:   Mon Aug 31 20:40:00 +0000 2015
 >> Originator:     Martin Husemann
 >> Release:        NetBSD 7.99.21
 >> Organization:
 > The NetBSD Foundation, Inc.
 >> Environment:
 > ERLITE evbmips64
 >
 >> Description:
 >

 [snip]

 > 0x90000000000bebc0: dwc2_init+18c (63061,ffffffff80493880,ffffffff804b6520,fffff
 > fff804b6470) ra ffffffff8034cf38 sz 160
 > 0x90000000000bec60: octeon_dwc2_attach+938 (63061,ffffffff80493880,ffffffff804b6
 > 520,ffffffff804b6470) ra ffffffff8038474c sz 32
 > 0x90000000000bec80: config_attach_loc+1b4 (63061,ffffffff80493880,ffffffff804b65
 > 20,ffffffff804b6470) ra ffffffff80351c44 sz 64
 > 0x90000000000becc0: iobus_attach+174 (63061,ffffffff80493880,ffffffff804b6520,ff
 > ffffff804b6470) ra ffffffff8038474c sz 144
 > 0x90000000000bed50: config_attach_loc+1b4 (63061,ffffffff80493880,ffffffff804b65
 > 20,ffffffff804b6470) ra ffffffff802e81b8 sz 64
 > 0x90000000000bed90: mainbus_attach+a0 (63061,ffffffff80493880,ffffffff804b6520,f
 > fffffff804b6470) ra ffffffff8038474c sz 80

 dwc2_init is failing and it's not clear to me why

 Can you get the debug output from a DWC2_DEBUG kernel with dwc2debug set 
 to 2

 http://nxr.netbsd.org/xref/src/sys/external/bsd/dwc2/dwc2.c#77

 Thanks,
 NIck

From: Martin Husemann <martin@duskware.de>
To: Nick Hudson <skrll@netbsd.org>
Cc: gnats-bugs@NetBSD.org
Subject: Re: kern/50185: dwctwo attach failure
Date: Tue, 1 Sep 2015 13:15:52 +0200

 On Tue, Sep 01, 2015 at 07:46:56AM +0100, Nick Hudson wrote:
 > dwc2_init is failing and it's not clear to me why
 > 
 > Can you get the debug output from a DWC2_DEBUG kernel with dwc2debug set 
 > to 2

 dwctwo0: DWC OTG HCD INIT
 dwctwo0: hcfg=00000000
 dwctwo0: dwc2_core_init(0x980000000ff4f008)
 dwctwo0: dwc2_core_reset()
 dwctwo0: HS UTMI+ PHY selected
 dwctwo0: dwc2_core_reset()
 dwctwo0: External DMA Mode not supported
 dwctwo0: dwc2_hcd_init() FAILED, returning -22
 panic: kernel diagnostic assertion "xc_tailp < xc->xc_headp" failed: file "../../../../kern/subr_xcall.c", line 280 


 Martin

State-Changed-From-To: open->closed
State-Changed-By: skrll@NetBSD.org
State-Changed-When: Thu, 05 Nov 2015 10:39:53 +0000
State-Changed-Why:
Fixed in sys/external/bsd/dwc2/dist/dwc2_core.c:1.10


>Unformatted:

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