* Kernel panic under qemu-system-sparc64 when adding kb_ps2/kdmouse DT nodes
@ 2016-04-11 13:11 Mark Cave-Ayland
2016-04-11 16:08 ` David Miller
2016-04-11 16:41 ` Mark Cave-Ayland
0 siblings, 2 replies; 3+ messages in thread
From: Mark Cave-Ayland @ 2016-04-11 13:11 UTC (permalink / raw)
To: sparclinux
Hi all,
I'm working on improving the emulation of qemu-system-sparc64, and one
of the things I'm trying to do is get a framebuffer up and running which
means switching from serial keyboard/mouse devices over to PS/2 devices
currently used in QEMU.
Currently I'm setting up the DT based upon the tree at
http://irtfweb.ifa.hawaii.edu/~spex/computers/spex1/techdocs/111211-guidedog-failed/bigdog.prtconf.txt
and currently the nodes in OpenBIOS look like this:
0 > cd /pci/ebus/8042 ok
0 > ls
ffe2f388 kb_ps2@0
ffe2f6e0 kdmouse@1
ok
0 > .properties
device_type "8042"
name "8042"
reg 00000014 00000060 00000008
00000014 00000060 00000008
#address-cells 1
#size-cells 0
interrupts -- 8 : 00 00 00 01 00 00 00 02
ok
0 > cd kb_ps2 ok
0 > .properties
name "kb_ps2"
device_type "serial"
reg 00000000
keyboard ffffffff
address 60
ok
0 > cd .. ok
0 > cd kdmouse ok
0 > .properties
name "kdmouse"
device_type "mouse"
reg 00000001
mouse ffffffff
address 60
ok
It seems that with these nodes enabled in the DT, I get a kernel panic
on boot:
[ 0.000000] PROMLIB: Sun IEEE Boot Prom 'OBP 3.10.24 1999/01/01 01:01'
[ 0.000000] PROMLIB: Root node compatible: sun4u
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
[ 0.000000] Linux version 4.1.0-rc5+ (build@kentang) (gcc version
5.1.0 (GCC) ) #3 SMP Sat Aug 1 18:15:57 BST 2015
[ 0.000000] bootconsole [earlyprom0] enabled
[ 0.000000] ARCH: SUN4U
[ 0.000000] Ethernet address: 52:54:00:12:34:56
[ 0.000000] MM: PAGE_OFFSET is 0xfffff80000000000 (max_phys_bits = 40)
[ 0.000000] MM: VMALLOC [0x0000000100000000 --> 0x0000060000000000]
[ 0.000000] MM: VMEMMAP [0x0000060000000000 --> 0x00000c0000000000]
[ 0.000000] Kernel: Using 2 locked TLB entries for main kernel image.
[ 0.000000] Remapping the kernel... done.
[ 0.000000] OF stdout device is: /pci@1fe,0/ebus@3/su
[ 0.000000] PROM: Built device tree with 54608 bytes of memory.
[ 0.000000] Top of RAM: 0xfe80000, Total RAM: 0xfe80000
[ 0.000000] Memory hole size: 0MB
[ 0.000000] Allocated 16384 bytes for kernel page tables.
[ 0.000000] Zone ranges:
[ 0.000000] DMA empty
[ 0.000000] Normal [mem 0x0000000000000000-0x000000000fe7ffff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000000000000-0x000000000fe7ffff]
[ 0.000000] Initmem setup node 0 [mem
0x0000000000000000-0x000000000fe7ffff]
[ 0.000000] Booting Linux...
[ 0.000000] CPU CAPS: [flush,stbar,swap,muldiv,v9,mul32,div32,v8plus]
[ 0.000000] CPU CAPS: [vis]
[ 0.000000] PERCPU: Embedded 9 pages/cpu @fffff8000f800000 s32384
r8192 d33152 u4194304
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on.
Total pages: 32321
[ 0.000000] Kernel command line:
[ 0.000000] PID hash table entries: 1024 (order: 0, 8192 bytes)
[ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 262144
bytes)
[ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 131072
bytes)
[ 0.000000] Sorting __ex_table...
[ 0.000000] Memory: 244976K/260608K available (4046K kernel code,
460K rwdata, 1288K rodata, 264K init, 628K bss, 15632K reserved, 0K
cma-reserved)
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=1.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf\x16, nr_cpu_ids=1
[ 0.000000] NR_IRQS:2048 nr_irqs:2048 1
[ 5.162048] clocksource tick: mask: 0xffffffffffffffff max_cycles:
0x171024e7e0, max_idle_ns: 440795205315 ns
[ 5.163050] clocksource: mult[a000000] shift[24]
[ 5.163853] clockevent: mult[1999999a] shift[32]
[ 5.168727] Console: colour dummy device 80x25
[ 5.171411] console [tty0] enabled
[ 5.172458] bootconsole [earlyprom0] disabled
[ 0.000000] PROMLIB: Sun IEEE Boot Prom 'OBP 3.10.24 1999/01/01 01:01'
[ 0.000000] PROMLIB: Root node compatible: sun4u
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
[ 0.000000] Linux version 4.1.0-rc5+ (build@kentang) (gcc version
5.1.0 (GCC) ) #3 SMP Sat Aug 1 18:15:57 BST 2015
[ 0.000000] bootconsole [earlyprom0] enabled
[ 0.000000] ARCH: SUN4U
[ 0.000000] Ethernet address: 52:54:00:12:34:56
[ 0.000000] MM: PAGE_OFFSET is 0xfffff80000000000 (max_phys_bits = 40)
[ 0.000000] MM: VMALLOC [0x0000000100000000 --> 0x0000060000000000]
[ 0.000000] MM: VMEMMAP [0x0000060000000000 --> 0x00000c0000000000]
[ 0.000000] Kernel: Using 2 locked TLB entries for main kernel image.
[ 0.000000] Remapping the kernel... done.
[ 0.000000] OF stdout device is: /pci@1fe,0/ebus@3/su
[ 0.000000] PROM: Built device tree with 54608 bytes of memory.
[ 0.000000] Top of RAM: 0xfe80000, Total RAM: 0xfe80000
[ 0.000000] Memory hole size: 0MB
[ 0.000000] Allocated 16384 bytes for kernel page tables.
[ 0.000000] Zone ranges:
[ 0.000000] DMA empty
[ 0.000000] Normal [mem 0x0000000000000000-0x000000000fe7ffff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000000000000-0x000000000fe7ffff]
[ 0.000000] Initmem setup node 0 [mem
0x0000000000000000-0x000000000fe7ffff]
[ 0.000000] Booting Linux...
[ 0.000000] CPU CAPS: [flush,stbar,swap,muldiv,v9,mul32,div32,v8plus]
[ 0.000000] CPU CAPS: [vis]
[ 0.000000] PERCPU: Embedded 9 pages/cpu @fffff8000f800000 s32384
r8192 d33152 u4194304
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on.
Total pages: 32321
[ 0.000000] Kernel command line:
[ 0.000000] PID hash table entries: 1024 (order: 0, 8192 bytes)
[ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 262144
bytes)
[ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 131072
bytes)
[ 0.000000] Sorting __ex_table...
[ 0.000000] Memory: 244976K/260608K available (4046K kernel code,
460K rwdata, 1288K rodata, 264K init, 628K bss, 15632K reserved, 0K
cma-reserved)
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=1.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf\x16, nr_cpu_ids=1
[ 0.000000] NR_IRQS:2048 nr_irqs:2048 1
[ 5.162048] clocksource tick: mask: 0xffffffffffffffff max_cycles:
0x171024e7e0, max_idle_ns: 440795205315 ns
[ 5.163050] clocksource: mult[a000000] shift[24]
[ 5.163853] clockevent: mult[1999999a] shift[32]
[ 5.168727] Console: colour dummy device 80x25
[ 5.171411] console [tty0] enabled
[ 5.172458] bootconsole [earlyprom0] disabled
[ 5.251704] Calibrating delay using timer specific routine.. 203.87
BogoMIPS (lpj@7757)
[ 5.251937] pid_max: default: 32768 minimum: 301
[ 5.252768] Security Framework initialized
[ 5.254079] AppArmor: AppArmor disabled by boot time parameter
[ 5.254432] Mount-cache hash table entries: 1024 (order: 0, 8192 bytes)
[ 5.254493] Mountpoint-cache hash table entries: 1024 (order: 0, 8192
bytes)
[ 5.263099] Initializing cgroup subsys blkio
[ 5.263198] Initializing cgroup subsys devices
[ 5.263308] Initializing cgroup subsys freezer
[ 5.263396] Initializing cgroup subsys net_cls
[ 5.263479] Initializing cgroup subsys perf_event
[ 5.279949] Brought up 1 CPUs
[ 5.288186] devtmpfs: initialized
[ 5.291985] Performance events: No support for PMU type 'ultra12'
[ 5.294785] clocksource jiffies: mask: 0xffffffff max_cycles:
0xffffffff, max_idle_ns: 7645041785100000 ns
[ 5.310345] NET: Registered protocol family 16
[ 5.327377] /pci@1f,0: PCI IO[1fe02000000] MEM[1ff00100000]
[ 5.327585] /pci@1f,0: Unable to request IOMMU resource.
[ 5.327655] /pci@1f,0: SABRE PCI Bus Module ver[0:0]
[ 5.327730] PCI: Scanning PBM /pci@1f,0
[ 5.328662] sabre ffe2b5a8: PCI host bridge to bus 0000:00
[ 5.329078] pci_bus 0000:00: root bus resource [io
0x1fe02000000-0x1fe0200ffff] (bus address [0x0000-0xffff])
[ 5.329186] pci_bus 0000:00: root bus resource [mem
0x1ff00100000-0x1ff100fffff] (bus address [0x00000000-0x0fffffff])
[ 5.329364] pci_bus 0000:00: root bus resource [bus 00-02]
[ 5.336339] pci 0000:00:01.0: can't claim BAR 13 [io
0x1000000-0x1fffff]: no compatible bridge window
[ 5.336458] pci 0000:00:01.1: can't claim BAR 13 [io
0x1000000-0x1fffff]: no compatible bridge window
[ 5.358945] vgaarb: setting as boot device: PCI:0000:00:02.0
[ 5.359164] vgaarb: device added:
PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
[ 5.359292] vgaarb: loaded
[ 5.359382] vgaarb: bridge control possible 0000:00:02.0
[ 5.367024] /pci@1f,0/ebus@3/eeprom@14,2000: Mostek regs at 0x1fe02006000
[ 5.369048] Switched to clocksource tick
[ 5.436155] NET: Registered protocol family 2
[ 5.441114] TCP established hash table entries: 2048 (order: 1, 16384
bytes)
[ 5.441293] TCP bind hash table entries: 2048 (order: 2, 32768 bytes)
[ 5.441451] TCP: Hash tables configured (established 2048 bind 2048)
[ 5.442409] UDP hash table entries: 256 (order: 0, 8192 bytes)
[ 5.442569] UDP-Lite hash table entries: 256 (order: 0, 8192 bytes)
[ 5.444078] NET: Registered protocol family 1
[ 5.452357] futex hash table entries: 256 (order: 1, 16384 bytes)
[ 5.453130] audit: initializing netlink subsys (disabled)
[ 5.453874] audit: type 00 audit(0.280:1): initialized
[ 5.457471] HugeTLB registered 8 MB page size, pre-allocated 0 pages
[ 5.459739] VFS: Disk quotas dquot_6.6.0
[ 5.459973] VFS: Dquot-cache hash table entries: 1024 (order 0, 8192
bytes)
[ 5.473751] alg: No test for stdrng (krng)
[ 5.474018] bounce: pool size: 64 pages
[ 5.474282] Block layer SCSI generic (bsg) driver version 0.4 loaded
(major 252)
[ 5.474444] io scheduler noop registered
[ 5.474535] io scheduler deadline registered
[ 5.474838] io scheduler cfq registered (default)
[ 5.478315] ffe2ee00: ttyS0 at MMIO 0x1fe020043f8 (irq = 5, base_baud
= 115387) is a 16550A
[ 5.478530] Console: ttyS0 (SU)
[ 5.510040] console [ttyS0] enabled
[ 5.513297] Unable to handle kernel NULL pointer dereference
[ 5.513709] tsk->{mm,active_mm}->context = 0000000000000000
[ 5.514096] tsk->{mm,active_mm}->pgd = fffff80000402000
[ 5.514457] \|/ ____ \|/
[ 5.514457] "@'/ .. \`@"
[ 5.514457] /_| \__/ |_\
[ 5.514457] \__U_/
[ 5.515389] swapper/0(1): Oops [#1]
[ 5.515857] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.1.0-rc5+ #3
[ 5.516319] task: fffff8000f0a36a0 ti: fffff8000f0bc000 task.ti:
fffff8000f0bc000
[ 5.516828] TSTATE: 0000000080001606 TPC: 00000000006e1c7c TNPC:
00000000006e1c80 Y: 00000002 Not tainted
[ 5.517549] TPC: <sparc_i8042_probe+0x1c/0x110>
[ 5.517855] g0: fffff8000f02daa8 g1: 0000000000000000 g2:
fffff8000f3f7438 g3: fffff8000f3f7090
[ 5.518405] g4: fffff8000f0a36a0 g5: fffff8000ee10000 g6:
fffff8000f0bc000 g7: 000000000000000a
[ 5.518941] o0: fffff8000f3f7438 o1: 00000000008eef88 o2:
fffff8000f3f7438 o3: fffff8000f803040
[ 5.519476] o4: 0000000000000000 o5: fffff8000f3f7438 sp:
fffff8000f0bed31 ret_pc: 00000000005a9e88
[ 5.520079] RPC: <sysfs_do_create_link_sd.isra.0+0x74/0xb0>
[ 5.520450] l0: 00000000008ec400 l1: 00000000008e8c00 l2:
fffff8000f803140 l3: fffff8000f803180
[ 5.521075] l4: 0000000000000001 l5: 0000000000000000 l6:
0000000000970e70 l7: 0000000000000000
[ 5.521619] i0: fffff8000f2fd000 i1: 00000000008e8c00 i2:
00000000008e8400 i3: 00000000008ec400
[ 5.522160] i4: fffff8000f3f7438 i5: fffff8000f3f6970 i6:
fffff8000f0bede1 i7: 00000000006c515c
[ 5.522707] I7: <platform_drv_probe+0x24/0x78>
[ 5.523026] Call Trace:
[ 5.523269] [00000000006c515c] platform_drv_probe+0x24/0x78
[ 5.523647] [00000000006c37c0] driver_probe_device+0xec/0x24c
[ 5.524008] [00000000006c217c] bus_for_each_drv+0x6c/0x84
[ 5.524350] [00000000006c368c] device_attach+0x60/0x8c
[ 5.524676] [00000000006c2d68] bus_probe_device+0x20/0xa0
[ 5.525144] [00000000006c1310] device_add+0x2f0/0x53c
[ 5.525475] [00000000006c4f3c] platform_device_add+0x174/0x214
[ 5.525890] [00000000006c5648] __platform_create_bundle+0x48/0xa0
[ 5.526273] [00000000009dae18] i8042_init+0x118/0x174
[ 5.526713] [0000000000426cc8] do_one_initcall+0x168/0x178
[ 5.527262] [00000000009b6bb4] kernel_init_freeable+0x188/0x22c
[ 5.527732] [00000000007f0354] kernel_init+0x4/0xf0
[ 5.528165] [00000000004060e4] ret_from_fork+0x1c/0x2c
[ 5.528583] [0000000000000000] (null)
[ 5.529062] Disabling lock debugging due to kernel taint
[ 5.529511] Caller[00000000006c515c]: platform_drv_probe+0x24/0x78
[ 5.529951] Caller[00000000006c37c0]: driver_probe_device+0xec/0x24c
[ 5.530371] Caller[00000000006c217c]: bus_for_each_drv+0x6c/0x84
[ 5.530748] Caller[00000000006c368c]: device_attach+0x60/0x8c
[ 5.531110] Caller[00000000006c2d68]: bus_probe_device+0x20/0xa0
[ 5.531483] Caller[00000000006c1310]: device_add+0x2f0/0x53c
[ 5.531837] Caller[00000000006c4f3c]: platform_device_add+0x174/0x214
[ 5.532234] Caller[00000000006c5648]: __platform_create_bundle+0x48/0xa0
[ 5.532649] Caller[00000000009dae18]: i8042_init+0x118/0x174
[ 5.533095] Caller[0000000000426cc8]: do_one_initcall+0x168/0x178
[ 5.533479] Caller[00000000009b6bb4]: kernel_init_freeable+0x188/0x22c
[ 5.533880] Caller[00000000007f0354]: kernel_init+0x4/0xf0
[ 5.534229] Caller[00000000004060e4]: ret_from_fork+0x1c/0x2c
[ 5.534580] Caller[0000000000000000]: (null)
[ 5.534917] Instruction DUMP: 330023a3 210023b1 230023a3 <fa586048>
b616e3d8 b416a2a8 b2166250 a01423e0 a2146260
[ 5.536169] Kernel panic - not syncing: Attempted to kill init!
exitcode=0x00000009
[ 5.536169]
[ 5.537022] Press Stop-A (L1-A) to return to the boot prom
[ 5.537377] ---[ end Kernel panic - not syncing: Attempted to kill
init! exitcode=0x00000009
[ 5.537377]
With various printk()s liberally sprinkled around the 8042 driver what I
see is something like the following:
- sparc_i8042_probe() is called successfully using a platform_device
passed in from the initial device tree scan
- i8042_init() calls platform_create_bundle() to initialise the
platform-specific parts of the keyboard driver in
drivers/input/serio/i8042-sparcio.h.
- platform_create_bundle() calls platform_device_alloc() to create a new
platform_device object.
- The new platform_device object is passed into sparc_i8042_probe() for
a second time which segfaults when trying to access the
platform_device's OF node property with op->dev.of_node.
At the moment I'm confused as to how this can work on real hardware
since platform_device_alloc() creates a new platform_device from scratch
and so the reference to the OF device node dev.of_node, which is
eventually passed onto sparc_i8042_probe() when it is called for the
second time, is never populated.
Can anyone help point me in the right direction and show me what I'm
doing wrong?
Many thanks,
Mark.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Kernel panic under qemu-system-sparc64 when adding kb_ps2/kdmouse DT nodes
2016-04-11 13:11 Kernel panic under qemu-system-sparc64 when adding kb_ps2/kdmouse DT nodes Mark Cave-Ayland
@ 2016-04-11 16:08 ` David Miller
2016-04-11 16:41 ` Mark Cave-Ayland
1 sibling, 0 replies; 3+ messages in thread
From: David Miller @ 2016-04-11 16:08 UTC (permalink / raw)
To: sparclinux
From: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Date: Mon, 11 Apr 2016 14:11:43 +0100
> 0 > cd kb_ps2 ok
> 0 > .properties
> name "kb_ps2"
> device_type "serial"
> reg 00000000
> keyboard ffffffff
> address 60
> ok
> 0 > cd .. ok
> 0 > cd kdmouse ok
> 0 > .properties
> name "kdmouse"
> device_type "mouse"
> reg 00000001
> mouse ffffffff
> address 60
> ok
The kbd and mouse nodes must have interrupts properties too.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Kernel panic under qemu-system-sparc64 when adding kb_ps2/kdmouse DT nodes
2016-04-11 13:11 Kernel panic under qemu-system-sparc64 when adding kb_ps2/kdmouse DT nodes Mark Cave-Ayland
2016-04-11 16:08 ` David Miller
@ 2016-04-11 16:41 ` Mark Cave-Ayland
1 sibling, 0 replies; 3+ messages in thread
From: Mark Cave-Ayland @ 2016-04-11 16:41 UTC (permalink / raw)
To: sparclinux
On 11/04/16 17:08, David Miller wrote:
> From: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
> Date: Mon, 11 Apr 2016 14:11:43 +0100
>
>> 0 > cd kb_ps2 ok
>> 0 > .properties
>> name "kb_ps2"
>> device_type "serial"
>> reg 00000000
>> keyboard ffffffff
>> address 60
>> ok
>> 0 > cd .. ok
>> 0 > cd kdmouse ok
>> 0 > .properties
>> name "kdmouse"
>> device_type "mouse"
>> reg 00000001
>> mouse ffffffff
>> address 60
>> ok
>
> The kbd and mouse nodes must have interrupts properties too.
Hi David,
I've just tried this and it makes no difference in my tests here. I'm
not convinced that it's related to interrupts since from the real device
tree in the link from the previous email you can see that both
interrupts are held in the parent 8042 property, i.e.
System Configuration: Sun Microsystems sun4u
Memory size: 128 Megabytes
System Peripherals (PROM Nodes):
Node 0xf002a504
reset-reason: 'POR'
idprom:
01800080.b600d782.ffffffff.0901779d.ffffffff.ffffffff.00000000.00000000
compatible: 'sun4u'
breakpoint-trap: 0000007f
#size-cells: 00000002
energystar-v2:
model: 'THEMIS,xxx-xxxx'
name: 'SUNW,UltraSPARC-IIi-cEngine'
clock-frequency: 055d455f
banner-name: 'SPARCengine(tm)Ultra(tm) THEMIS-USPIIi-1v
(UltraSPARC-IIi 270MHz)'
device_type: 'upa'
...
...
...
Node 0xf0071e58
interrupts: 00000001.00000002
#size-cells: 00000000
#address-cells: 00000001
reg:
00000014.00300060.00000008.00000014.00300060.00000008
device_type: '8042'
name: '8042'
model: 'INTC,80c42'
Node 0xf0072ab4
reg: 00000000
language: 'en'
compatible: 'pnpPNP,303'
port-b-ignore-cd:
port-a-ignore-cd:
keyboard:
device_type: 'serial'
name: 'kb_ps2'
Node 0xf00757b0
reg: 00000001
compatible: 'pnpPNP,f03'
port-b-ignore-cd:
port-a-ignore-cd:
mouse:
device_type: 'serial'
name: 'kdmouse'
I've also tried various other OS flavours and all of OpenBSD, NetBSD and
FreeBSD detect both 8042 devices fine, it's just Linux that panics.
Another point of interest is that if I just add either one of the two
devices on their own then the panic goes away, so it's only when both
are present together that I see the issue.
ATB,
Mark.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2016-04-11 16:41 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2016-04-11 13:11 Kernel panic under qemu-system-sparc64 when adding kb_ps2/kdmouse DT nodes Mark Cave-Ayland
2016-04-11 16:08 ` David Miller
2016-04-11 16:41 ` Mark Cave-Ayland
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