[Qemu-devel] [Bug 1833661] Re: Linux kernel oops on Malta board while accessing pflash

[Philippe Mathieu-Daudé]

Relevant 64-bit output:

tests/acceptance/linux_ssh_mips_malta.py:LinuxSSH.test_mips_malta64eb_kernel3_2_0

[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 3.2.0-4-5kc-malta (address@hidden) (gcc version 
4.6.3 (Debian 4.6.3-14) ) #1 Debian 3.2.51-1
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU revision is: 000182a0 (MIPS 20Kc)
[    0.000000] FPU revision is: 000f8200
[    0.000000] Checking for the multiply/shift bug... no.
[    0.000000] Checking for the daddiu bug... no.
[    0.000000] Determined physical RAM map:
[    0.000000]  memory: 0000000000001000 @ 0000000000000000 (reserved)
[    0.000000]  memory: 00000000000ef000 @ 0000000000001000 (ROM data)
[    0.000000]  memory: 0000000000748000 @ 00000000000f0000 (reserved)
[    0.000000]  memory: 00000000077c7000 @ 0000000000838000 (usable)
[    0.000000] Wasting 117824 bytes for tracking 2104 unused pages
[    0.000000] Initrd not found or empty - disabling initrd
[    0.000000] Kernel command line: printk.time=0 console=ttyS0 root=/dev/sda1
[...]
Freeing prom memory: 956k freed
Freeing unused kernel memory: 244k freed

INIT: version 2.88 booting

Using makefile-style concurrent boot in runlevel S.
physmap platform flash device: 00400000 at 1e000000
sr0: scsi3-mmc drive: 4x/4x cd/rw xa/form2 tray
[...]
sd 0:0:0:0: Attached scsi generic sg0 type 0
sr 1:0:0:0: Attached scsi generic sg1 type 5
physmap-flash.0: Found 1 x32 devices at 0x0 in 32-bit bank. Manufacturer ID 
0x000000 Chip ID 0x000000
input: ImExPS/2 Generic Explorer Mouse as 
/devices/platform/i8042/serio1/input/input1
Intel/Sharp Extended Query Table at 0x0031
Using buffer write method
Searching for RedBoot partition table in physmap-flash.0 at offset 0x1003f0000
Creating 3 MTD partitions on "physmap-flash.0":
0x000000000000-0x000000100000 : "YAMON"
0x000000100000-0x0000003e0000 : "User FS"
0x0000003e0000-0x000000400000 : "Board Config"
CPU 0 Unable to handle kernel paging request at virtual address 
0000000000000028, epc == ffffffffc00f9234, ra == ffffffffc00f9210

** Changed in: qemu
     Assignee: (unassigned) => Philippe Mathieu-Daudé (philmd)

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https://bugs.launchpad.net/bugs/1833661

Title:
  Linux kernel oops on Malta board while accessing pflash

Status in QEMU:
  New

Bug description:
  commit 33d609990621dea6c7d056c86f707b8811320ac1

  While running tests/acceptance/linux_ssh_mips_malta.py, the big-endian
  tests fail:

    physmap-flash.0: Found 1 x32 devices at 0x0 in 32-bit bank. Manufacturer ID 
0x000000 Chip ID 0x000000
    Intel/Sharp Extended Query Table at 0x0031
    Using buffer write method
    Searching for RedBoot partition table in physmap-flash.0 at offset 
0x1003f0000
    Creating 3 MTD partitions on "physmap-flash.0":
    0x000000000000-0x000000100000 : "YAMON"
    0x000000100000-0x0000003e0000 : "User FS"
    0x0000003e0000-0x000000400000 : "Board Config"
    CPU 0 Unable to handle kernel paging request at virtual address 00000014

  The 64-bit test fails with:

    CPU 0 Unable to handle kernel paging request at virtual address
  0000000000000028

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