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    SubjectRe: 2.6.24-rc3-mm1 - Kernel Panic on IO-APIC
    On Nov 21, 2007 10:29 AM, Andrew Morton <akpm@linux-foundation.org> wrote:
    > On Wed, 21 Nov 2007 14:52:26 +0530 Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> wrote:
    >
    > > Andrew Morton wrote:
    > > > On Wed, 21 Nov 2007 11:41:23 +0530 Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> wrote:
    > > >> ACPI: Core revision 20070126
    > > >> ..MP-BIOS bug: 8254 timer not connected to IO-APIC
    > > >> Kernel panic - not syncing: IO-APIC + timer doesn't work! Try using the 'noapic' kernel parameter

    I seen an identical error.

    > > > ACPI or x86 breakage, I guess.
    > > >
    > > > Did 'noapic' work?
    > >
    > > Passing noapic works,
    >
    > OK.

    Not for me. I get a similar oops, but then the kernel panics

    > > but the kernel oops's
    > >
    > > [ 97.161103] Unable to handle kernel NULL pointer dereference at 0000000000000009 RIP:
    > > [ 97.193973] [<ffffffff802341df>] cpu_to_allnodes_group+0x69/0x7c
    [snip]
    > urgh, mess. Enabling frame pointers might help here.

    CONFIG_FRAME_POINTER=y

    The oops/panic that happens with noapic:
    [ 35.866758] Initializing CPU#3
    [ 35.868769] Stuck ??
    [ 35.874043] Inquiring remote APIC #3...
    [ 35.877896] ... APIC #3 ID: 03000000
    [ 35.881523] ... APIC #3 VERSION: 80050010
    [ 35.885587] ... APIC #3 SPIV: 000001ff
    [ 35.889390] Brought up 1 CPUs
    [ 35.892375] Unable to handle kernel NULL pointer dereference at
    0000000000000009 RIP:
    [ 35.897868] [<ffffffff8022fc5b>] cpu_to_allnodes_group+0x4b/0x60
    [ 35.906464] PGD 0
    [ 35.908523] Oops: 0000 [1] SMP
    [ 35.911757] last sysfs file:
    [ 35.914740] CPU 0
    [ 35.916798] Modules linked in:
    [ 35.919990] Pid: 1, comm: swapper Not tainted 2.6.24-rc3-mm1 #2
    [ 35.925914] RIP: 0010:[<ffffffff8022fc5b>] [<ffffffff8022fc5b>]
    cpu_to_allnodes_group+0x4b/0x60
    [ 35.934734] RSP: 0000:ffff81011ff2bdb0 EFLAGS: 00010282
    [ 35.940053] RAX: ffffffff8084d870 RBX: ffff810001005810 RCX: 0000000000000004
    [ 35.947188] RDX: 0000000000000001 RSI: ffff81011ff26f68 RDI: ffff81011ff2bdb0
    [ 35.954323] RBP: ffff81011ff2bdd0 R08: 2222222222222222 R09: 0000000000000000
    [ 35.961457] R10: ffff81007ff1c200 R11: 0000000000000200 R12: ffff810001005800
    [ 35.968592] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
    [ 35.975727] FS: 0000000000000000(0000) GS:ffffffff807d4000(0000)
    knlGS:0000000000000000
    [ 35.983951] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
    [ 35.989701] CR2: 0000000000000009 CR3: 0000000000201000 CR4: 00000000000006a0
    [ 35.996836] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
    [ 36.003971] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
    [ 36.011105] Process swapper (pid: 1, threadinfo FFFF81011FF2A000,
    task FFFF81007FF2A000)
    [ 36.019191] Stack: 0000000000000000 ffffffff807e8f98
    0000000000000000 ffff810001005800
    [ 36.027373] ffff81011ff2be80 ffffffff80230580 ffffffff8084d640
    ffffffff8084d6e0
    [ 36.034922] ffffffff8084d780 ffffffff8084d800 ffffffffffffffff
    ffff81011ff26f68
    [ 36.042247] Call Trace:
    [ 36.044929] [<ffffffff80230580>] build_sched_domains+0x460/0x820
    [ 36.051701] [<ffffffff805cf489>] mutex_lock_nested+0x199/0x2e0
    [ 36.057624] [<ffffffff80230991>] arch_init_sched_domains+0x51/0x60
    [ 36.063895] [<ffffffff8080e422>] sched_init_smp+0x22/0xe0
    [ 36.069385] [<ffffffff80806825>] smp_cpus_done+0x25/0x30
    [ 36.074791] [<ffffffff807fb739>] kernel_init+0x109/0x350
    [ 36.080196] [<ffffffff8025a34f>] trace_hardirqs_on+0xbf/0x160
    [ 36.086032] [<ffffffff805d03d2>] trace_hardirqs_on_thunk+0x35/0x3a
    [ 36.092303] [<ffffffff8025a34f>] trace_hardirqs_on+0xbf/0x160
    [ 36.098141] [<ffffffff8020cbc8>] child_rip+0xa/0x12
    [ 36.103113] [<ffffffff8020c2df>] restore_args+0x0/0x30
    [ 36.108345] [<ffffffff807fb630>] kernel_init+0x0/0x350
    [ 36.113750] [<ffffffff8020cbbe>] child_rip+0x0/0x12
    [ 36.118722]
    [ 36.120236] INFO: lockdep is turned off.
    [ 36.124170]
    [ 36.124170] Code: 48 03 42 08 48 89 03 48 83 c4 18 89 c8 5b c9 c3
    0f 1f 44 00
    [ 36.133640] RIP [<ffffffff8022fc5b>] cpu_to_allnodes_group+0x4b/0x60
    [ 36.140116] RSP <ffff81011ff2bdb0>
    [ 36.143619] CR2: 0000000000000009
    [ 36.146952] Kernel panic - not syncing: Attempted to kill init!

    (gdb) list *0xffffffff8022fc5b
    0xffffffff8022fc5b is in cpu_to_allnodes_group (kernel/sched.c:6073).
    6068
    6069 cpus_and(nodemask, nodemask, *cpu_map);
    6070 group = first_cpu(nodemask);
    6071
    6072 if (sg)
    6073 *sg = &per_cpu(sched_group_allnodes, group);
    6074 return group;
    6075 }
    6076
    6077 static void init_numa_sched_groups_power(struct sched_group *group_head)

    Hope this stack trace is better.

    Torsten
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