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    SubjectRe: BUG: 2.6.6-rc3 on SMP/SPARC64 (Sun E3000) & MD / ksymoops output
    Date
    Output from ksymoops is attached below.

    On Friday 07 May 2004 10:49, you wrote:
    > I've been trying to get 2.6.6-rc3 to work in SMP mode on my E3000
    > without much success yet. It boots fine with a uniprocessor kernel,
    > but trying to enable SMP gives me this as the last few lines of the
    > kernel messages (booted with -p early printk option):
    >

    ksymoops 2.4.9 on sparc64 2.4.26-sparc64-smp. Options used
    -v /usr/src/linux-2.6.6-rc3/vmlinux (specified)
    -K (specified)
    -L (specified)
    -o /lib/modules/2.4.26-sparc64-smp/ (default)
    -m /usr/src/linux-2.6.6-rc3/System.map (specified)

    No modules in ksyms, skipping objects
    Unable to handle kernel NULL pointer dereference
    tsk->{mm,active_mm}->context = 0000000000000000
    tsk->{mm,active_mm}->pgd = fffff8000040f000
    \|/ ____ \|/
    "@'/ .. \`@"
    /_| \__/ |_\
    \__U_/
    swapper(0): Oops [#1]
    TSTATE: 0000009980f01603 TPC: 000000000044b704 TNPC: 000000000044b708 Y:
    000000d
    Using defaults from ksymoops -t elf32-sparc -a sparc
    g0: 00000000006c5c00 g1: 00000000000007f0 g2: 0000000000000000 g3:
    0000000000628
    g4: 0000000000622000 g5: 0000000000000000 g6: 000000000061e000 g7:
    0000000000000
    o0: 000000000000007d o1: 0000000000008000 o2: fffff8000005c440 o3:
    00000000006a0
    o4: 0000000000621d98 o5: 0000000000000008 sp: 00000000006214e1 ret_pc:
    00000000c
    l0: 00000000006a11b8 l1: 00000000006c7400 l2: 00000000006c5c00 l3:
    0000000000620
    l4: 000000000000fe83 l5: 0000000000000003 l6: 0000000000000000 l7:
    0000000000620
    i0: 0000000000622000 i1: 0000000000000002 i2: 00000000006a11b8 i3:
    fffff80000030
    i4: 0000000000000001 i5: fffff8000003de98 i6: 00000000006215b1 i7:
    000000000068c


    >>PC; 0044b704 <wake_up_forked_process+1e4/280> <=====

    >>g0; 006c5c00 <__log_buf+7d50/8000>
    >>g4; 00622000 <init_task+0/580>
    >>g6; 0061e000 <init_thread_union+0/4000>
    >>o4; 00621d98 <init_thread_union+3d98/4000>
    >>sp; 006214e1 <init_thread_union+34e1/4000>
    >>l0; 006a11b8 <per_cpu__runqueues+0/1260>
    >>l1; 006c7400 <uidhash_table+ef0/1000>
    >>l2; 006c5c00 <__log_buf+7d50/8000>
    >>i0; 00622000 <init_task+0/580>
    >>i2; 006a11b8 <per_cpu__runqueues+0/1260>
    >>i6; 006215b1 <init_thread_union+35b1/4000>

    Instruction DUMP: 9a01e008 82006020 c2762038 <c4586008> c6706008
    82102001 c
    Error (Oops_code_values): invalid value 0xc in Code line, must be 2, 4,
    8 or 16 digits, value ignored


    Code; 0044b6f8 <wake_up_forked_process+1d8/280>
    00000000 <_PC>:
    Code; 0044b6f8 <wake_up_forked_process+1d8/280>
    0: 9a 01 e0 08 add %g7, 8, %o5
    Code; 0044b6fc <wake_up_forked_process+1dc/280>
    4: 82 00 60 20 add %g1, 0x20, %g1
    Code; 0044b700 <wake_up_forked_process+1e0/280>
    8: c2 76 20 38 unknown
    Code; 0044b704 <wake_up_forked_process+1e4/280>
    c: c4 58 60 08 unknown
    Code; 0044b708 <wake_up_forked_process+1e8/280>
    10: c6 70 60 08 unknown
    Code; 0044b70c <wake_up_forked_process+1ec/280>
    14: 82 10 20 01 mov 1, %g1

    Kernel panic: Attempted to kill the idle task!

    > ----------------------------------------------------------------
    > CENTRAL: Detected 4 slot Enterprise system. cfreg[aa] cver[fc]
    > FHC(board 1): Version[1] PartID[fa0] Manuf[3e] (CENTRAL)
    > FHC(board 5): Version[1] PartID[fa0] Manuf[3e] (JTAG Master)
    > FHC(board 7): Version[1] PartID[fa0] Manuf[3e]
    > FHC(board 1): Version[1] PartID[fa0] Manuf[3e]
    > FHC(board 3): Version[1] PartID[fa0] Manuf[3e]
    > Built 1 zonelists
    > Kernel command line: root=/dev/sda1 ro -p
    > PID hash table entries: 2048 (order 11: 32768 bytes)
    > Unable to handle kernel NULL pointer dereference
    > tsk->{mm,active_mm}->context = 0000000000000000
    > tsk->{mm,active_mm}->pgd = fffff8000040f000
    > \|/ ____ \|/
    > "@'/ .. \`@"
    > /_| \__/ |_\
    > \__U_/
    > swapper(0): Oops [#1]
    > TSTATE: 0000009980f01603 TPC: 000000000044b704 TNPC: 000000000044b708
    > Y: 000000d TPC: <wake_up_forked_process+0x1e4/0x280>
    > g0: 00000000006c5c00 g1: 00000000000007f0 g2: 0000000000000000 g3:
    > 0000000000628 g4: 0000000000622000 g5: 0000000000000000 g6:
    > 000000000061e000 g7: 0000000000000 o0: 000000000000007d o1:
    > 0000000000008000 o2: fffff8000005c440 o3: 00000000006a0 o4:
    > 0000000000621d98 o5: 0000000000000008 sp: 00000000006214e1 ret_pc:
    > 00000000c RPC: <wake_up_forked_process+0x15c/0x280>
    > l0: 00000000006a11b8 l1: 00000000006c7400 l2: 00000000006c5c00 l3:
    > 0000000000620 l4: 000000000000fe83 l5: 0000000000000003 l6:
    > 0000000000000000 l7: 0000000000620 i0: 0000000000622000 i1:
    > 0000000000000002 i2: 00000000006a11b8 i3: fffff80000030 i4:
    > 0000000000000001 i5: fffff8000003de98 i6: 00000000006215b1 i7:
    > 000000000068c I7: <sched_init+0x12c/0x1a0>
    > Instruction DUMP: 9a01e008 82006020 c2762038 <c4586008> c6706008
    > 82102001 c Kernel panic: Attempted to kill the idle task!
    > In idle task - not syncing
    > <0>Press L1-A to return to the boot prom
    > ---------------------------
    >
    > I've posted my .config, System.map, (uniproc) dmesg (from klogd), and
    > (2.4.26) /proc/cpuinfo files to:
    > http://x-ray.rcs.purdue.edu/linux-2.6.6-rc3-e3000.config
    > http://x-ray.rcs.purdue.edu/linux-2.6.6-rc3-e3000.System.map
    > http://x-ray.rcs.purdue.edu/linux-2.6.6-rc3-e3000.dmesg
    > http://x-ray.rcs.purdue.edu/linux-2.4.26-e3000.cpuinfo
    >
    > I have not yet tested any other versions on it.
    >
    > Also, I've noticed the md driver seems to have problems with data
    > corruption (it overwrites other partitions on the same disk, or the
    > disklabel even). I've noticed this problem under 2.6.5 on my Sun
    > Ultra 60, as well. Is it an UltrSparc issue, or is it more general?
    >
    > Pat

    --
    Purdue University ITAP/RCS --- http://www.itap.purdue.edu/rcs/
    The Computer Refuge --- http://computer-refuge.org
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