Hi all,
I'd like to report a bug using the at91_udc driver,
starting from the v3.5-rc1 to the latest v3.5-rc5-98-g9e85a6f, the
v3.4.0 was working fine.
I'm encountering a kernel oops when using the at91_udc driver and
connecting the usb device cable.
I'm using the Atmel AT91SAM9260EK, i'm building on Ubuntu 12.04 using
buildroot 2012.05:
If useful i can provide more information, like the defconfig and try
to bisect to find the commit to blame.
Oops text:
# Unable to handle kernel NULL pointer dereference at virtual address 0000001a
pgd = c0004000
[0000001a] *pgd=00000000
Internal error: Oops: 17 [#1] ARM
Modules linked in:
CPU: 0 Not tainted (3.5.0-rc5+ #2)
PC is at composite_setup+0x20/0xba0
LR is at composite_setup+0x18/0xba0
pc : [<c01e285c>] lr : [<c01e2854>] psr: a0000093
sp : c0363e70 ip : c4878030 fp : c0363ed8
r10: 000888cf r9 : ffffff80 r8 : 00000000
r7 : c0385800 r6 : 00000005 r5 : 00000001 r4 : 00000000
r3 : c01df90c r2 : 00000080 r1 : c0363ed8 r0 : c0385b2c
Flags: NzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel
Control: 0005317f Table: 23ae0000 DAC: 00000017
Process swapper (pid: 0, stack limit = 0xc0362270)
Stack: (0xc0363e70 to 0xc0364000)
3e60: 00009b44 00000000 c036a070 c0371e28
3e80: c036c210 c004aea4 c036e560 c003e2b8 c0377d58 c0363e94 c0363e94 c004aea4
3ea0: c036e560 c0385800 00000001 00000005 40000093 00000000 ffffff80 000888cf
3ec0: 00088884 c01df060 00000000 c0385928 c4878030 00000006 01000680 00400000
3ee0: c0363ee0 c396b6e0 0000000a 00000000 00000000 0000000a c0389940 c0372c78
3f00: 00000001 c0054964 00000004 c0023f68 00000000 c0372c78 0000000a 00000000
3f20: c0363f94 20004000 41069265 2035abe4 00000000 c0054b08 c0372c78 c0056c30
3f40: c0379de0 c00542e0 000000c0 c000fe0c c000ff64 a0000013 fefff000 c000ebb8
3f60: 00000000 0005317f 0005217f a0000013 c0362000 c0389a88 c036cbbc c000ff40
3f80: 20004000 41069265 2035abe4 00000000 a00000d3 c0363fa8 c000ff58 c000ff64
3fa0: a0000013 ffffffff 60000093 c001012c c037065c c036a0a0 c03899e0 c035c2bc
3fc0: c0421320 c034071c ffffffff ffffffff c0340278 00000000 00000000 c035c2bc
3fe0: 00000000 00053175 c036a01c c035c2b8 c036cbb4 20008040 00000000 00000000
[<c01e285c>] (composite_setup+0x20/0xba0) from [<c01df060>]
(at91_udc_irq+0x4a0/0x86c)
[<c01df060>] (at91_udc_irq+0x4a0/0x86c) from [<c0054964>]
(handle_irq_event_percpu+0x50/0x1cc)
[<c0054964>] (handle_irq_event_percpu+0x50/0x1cc) from [<c0054b08>]
(handle_irq_event+0x28/0x38)
[<c0054b08>] (handle_irq_event+0x28/0x38) from [<c0056c30>]
(handle_level_irq+0x80/0xdc)
[<c0056c30>] (handle_level_irq+0x80/0xdc) from [<c00542e0>]
(generic_handle_irq+0x28/0x3c)
[<c00542e0>] (generic_handle_irq+0x28/0x3c) from [<c000fe0c>]
(handle_IRQ+0x30/0x98)
[<c000fe0c>] (handle_IRQ+0x30/0x98) from [<c000ebb8>] (__irq_svc+0x38/0x60)
[<c000ebb8>] (__irq_svc+0x38/0x60) from [<c000ff64>] (default_idle+0x24/0x40)
[<c000ff64>] (default_idle+0x24/0x40) from [<c001012c>] (cpu_idle+0x8c/0xcc)
[<c001012c>] (cpu_idle+0x8c/0xcc) from [<c034071c>] (start_kernel+0x280/0x2d0)
Code: e1a0b001 ebfe6b0d e5904004 e59f3b54 (e5d4101a)
---[ end trace 89acdf8be1f12346 ]---
Kernel panic - not syncing: Fatal exception in interrupt
Boot log:
RomBOOT
>Clocks: CPU 198 MHz, master 99 MHz, main 18.432 MHz
registered netconsole as cs1
atmel_nand: Use On Flash BBT
NAND device: Manufacturer ID: 0xec, Chip ID: 0xda (Samsung NAND 256MiB
3,3V 8-bit)
Bad block table found at page 131008, version 0x01
Bad block table found at page 130944, version 0x01
at91_udc@at91_udc0: at91_udc version 3 May 2006
atmel_mci@mci0: registered as mci0
atmel_mci@atmel_mci0: command/data timeout
atmel_mci@atmel_mci0: command/data timeout
atmel_mci@atmel_mci0: command/data timeout
Malloc space: 0x23b00000 -> 0x23efffff (size 4 MB)
Stack space : 0x23af8000 -> 0x23b00000 (size 32 kB)
running /env/bin/init...
No USB Device cable plugged, normal boot
Hit any key to stop autoboot: 0
booting kernel from /dev/nand0.kernel.bb
Image Name: Linux-3.5.0-rc5+
Created: 2012-07-04 9:08:40 UTC
OS: Linux
Architecture: ARM
Type: Kernel Image
Compression: uncompressed
Data Size: 1979376 Bytes = 1.9 MB
Load Address: 20008000
Entry Point: 20008000
commandline: console=ttyS0,115200 ip=none root=ubi0:rootfs ubi.mtd=6
rootfstype=ubifs noinitrd
mtdparts=atmel_nand:128k(at91bootstrap),256k(barebox)ro,128k(bareboxenv),128k(bareboxenv2),128k(oftree),4M(kernel),120M(rootfs),-(data)
arch_number: 1099
Uncompressing Linux... done, booting the kernel.
Booting Linux on physical CPU 0
Linux version 3.5.0-rc5+ (fabiopo@ld2036) (gcc version 4.6.1 (Sourcery
CodeBench Lite 2011.09-70) ) #2 Wed Jul 4 11:08:37 CEST 2012
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
CPU: VIVT data cache, VIVT instruction cache
Machine: Atmel AT91SAM9260-EK
Memory policy: ECC disabled, Data cache writeback
AT91: Detected soc type: at91sam9260
AT91: Detected soc subtype: Unknown
AT91: sram at 0x2ff000 of 0x2000 mapped at 0xfef76000
Clocks: CPU 198 MHz, master 99 MHz, main 18.432 MHz
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256
Kernel command line: console=ttyS0,115200 ip=none root=ubi0:rootfs
ubi.mtd=6 rootfstype=ubifs noinitrd
mtdparts=atmel_nand:128k(at91bootstrap),256k(barebox)ro,128k(bareboxenv),128k(bareboxenv2),128k(oftree),4M(kernel),120M(rootfs),-(data)
PID hash table entries: 256 (order: -2, 1024 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 61212k/61212k available, 4324k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
vmalloc : 0xc4800000 - 0xff000000 ( 936 MB)
lowmem : 0xc0000000 - 0xc4000000 ( 64 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.text : 0xc0008000 - 0xc033fc90 (3296 kB)
.init : 0xc0340000 - 0xc0360af4 ( 131 kB)
.data : 0xc0362000 - 0xc03899a0 ( 159 kB)
.bss : 0xc03899c4 - 0xc03a0004 ( 90 kB)
NR_IRQS:192
AT91: 96 gpio irqs in 3 banks
sched_clock: 32 bits at 100 Hz, resolution 10000000ns, wraps every 4294967286ms
Console: colour dummy device 80x30
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
Setting up static identity map for 0x2027e448 - 0x2027e4a0
NET: Registered protocol family 16
AT91: Power Management
AT91: Starting after user reset
bio: create slab <bio-0> at 0
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
i2c-gpio i2c-gpio: using pins 23 (SDA) and 24 (SCL)
Switching to clocksource pit
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP: reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
NetWinder Floating Point Emulator V0.97 (double precision)
msgmni has been set to 119
io scheduler noop registered (default)
atmel_usart.0: ttyS0 at MMIO 0xfffff200 (irq = 1) is a ATMEL_SERIAL
console [ttyS0] enabled
atmel_usart.1: ttyS1 at MMIO 0xfffb0000 (irq = 6) is a ATMEL_SERIAL
atmel_usart.2: ttyS2 at MMIO 0xfffb4000 (irq = 7) is a ATMEL_SERIAL
brd: module loaded
atmel_nand: Use On Flash BBT
atmel_nand atmel_nand: No DMA support for NAND access.
NAND device: Manufacturer ID: 0xec, Chip ID: 0xda (Samsung NAND 256MiB
3,3V 8-bit), page size: 2048, OOB size: 64
Bad block table found at page 131008, version 0x01
Bad block table found at page 130944, version 0x01
nand_bbt: corrected error in BBT at 0x00000ffe0000
Bad block table written to 0x00000ffe0000, version 0x01
Bad block table written to 0x00000ffc0000, version 0x01
8 cmdlinepart partitions found on MTD device atmel_nand
Creating 8 MTD partitions on "atmel_nand":
0x000000000000-0x000000020000 : "at91bootstrap"
0x000000020000-0x000000060000 : "barebox"
0x000000060000-0x000000080000 : "bareboxenv"
0x000000080000-0x0000000a0000 : "bareboxenv2"
0x0000000a0000-0x0000000c0000 : "oftree"
0x0000000c0000-0x0000004c0000 : "kernel"
0x0000004c0000-0x000007cc0000 : "rootfs"
0x000007cc0000-0x000010000000 : "data"
UBI: attaching mtd6 to ubi0
UBI: physical eraseblock size: 131072 bytes (128 KiB)
UBI: logical eraseblock size: 129024 bytes
UBI: smallest flash I/O unit: 2048
UBI: sub-page size: 512
UBI: VID header offset: 512 (aligned 512)
UBI: data offset: 2048
UBI: max. sequence number: 5
UBI: attached mtd6 to ubi0
UBI: MTD device name: "rootfs"
UBI: MTD device size: 120 MiB
UBI: number of good PEBs: 960
UBI: number of bad PEBs: 0
UBI: number of corrupted PEBs: 0
UBI: max. allowed volumes: 128
UBI: wear-leveling threshold: 4096
UBI: number of internal volumes: 1
UBI: number of user volumes: 1
UBI: available PEBs: 0
UBI: total number of reserved PEBs: 960
UBI: number of PEBs reserved for bad PEB handling: 9
UBI: max/mean erase counter: 1/0
UBI: image sequence number: 1488281736
macb macb: (unregistered net_device): invalid hw address, using random
UBI: background thread "ubi_bgt0d" started, PID 806
MACB_mii_bus: probed
macb macb: eth0: Cadence MACB at 0xfffc4000 irq 21 (aa:29:2a:0e:6b:9c)
macb macb: eth0: attached PHY driver [Generic PHY]
(mii_bus:phy_addr=macb-ffffffff:00, irq=-1)
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
at91_ohci at91_ohci: can't request overcurrent gpio 0
at91_ohci at91_ohci: AT91 OHCI
at91_ohci at91_ohci: new USB bus registered, assigned bus number 1
at91_ohci at91_ohci: irq 20, io mem 0x00500000
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
udc: at91_udc version 3 May 2006
gadget: using random self ethernet address
gadget: using random host ethernet address
usb0: MAC 0e:6c:55:91:aa:33
usb0: HOST MAC f2:ad:44:6c:f6:6e
gadget: Ethernet Gadget, version: Memorial Day 2008
gadget: g_ether ready
mousedev: PS/2 mouse device common for all mice
rtc-at91sam9 rtc-at91sam9.0: rtc core: registered rtc-at91sam9 as rtc0
rtc-at91sam9 rtc-at91sam9.0: rtc0: SET TIME!
i2c /dev entries driver
at91sam9_wdt: sorry, watchdog is disabled
at91_wdt: probe of at91_wdt failed with error -5
TCP: cubic registered
NET: Registered protocol family 17
rtc-at91sam9 rtc-at91sam9.0: hctosys: unable to read the hardware clock
UBIFS: recovery needed
UBIFS: recovery completed
UBIFS: mounted UBI device 0, volume 0, name "rootfs"
UBIFS: file system size: 120766464 bytes (117936 KiB, 115 MiB, 936 LEBs)
UBIFS: journal size: 9033728 bytes (8822 KiB, 8 MiB, 71 LEBs)
UBIFS: media format: w4/r0 (latest is w4/r0)
UBIFS: default compressor: lzo
UBIFS: reserved for root: 0 bytes (0 KiB)
VFS: Mounted root (ubifs filesystem) on device 0:9.
Freeing init memory: 128K
Starting logging: OK
Initializing random number generator... done.
Starting network...
Welcome to Buildroot
buildroot login:
Best regards
--
Fabio Porcedda
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