Today's next failed to boot on x86 box with following trace

Unpacking initramfs...
Freeing initrd memory: 10584k freed
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<c01a6b12>] pcpu_alloc+0x1cb/0x75e
*pdpt = 00000000005dd001 *pde = 0000000000000000
Oops: 0000 [#1] SMP
last sysfs file:
Modules linked in:

Pid: 1, comm: swapper Not tainted 2.6.33-autotest-next-20100303 #1 /eserver xSeries 235 -[86717AX]-
EIP: 0060:[<c01a6b12>] EFLAGS: 00010002 CPU: 1
EIP is at pcpu_alloc+0x1cb/0x75e
EAX: 00000000 EBX: c05c4100 ECX: cccccccc EDX: 00000000
ESI: 000000b0 EDI: 00000005 EBP: f5c69fa8 ESP: f5c69f2c
 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
Process swapper (pid: 1, ti=f5c68000 task=f5c66ce0 task.ti=f5c68000)
Stack:
 00000000 00000005 61746164 0a383d29 5f656400 61746164 00000004 000000b0
<0> 000a3036 00000286 61637061 29656863 0a36313d c0579100 c058da30 f5c69f94
<0> c01310be c05c41cc 00000028 c058da30 f5c69fa4 c0116a73 c0492091 c0492089
Call Trace:
 [<c058da30>] ? crash_save_vmcoreinfo_init+0x0/0x31a
 [<c01310be>] ? log_buf_kexec_setup+0x3f/0x67
 [<c058da30>] ? crash_save_vmcoreinfo_init+0x0/0x31a
 [<c0116a73>] ? arch_crash_save_vmcoreinfo+0x37/0x3c
 [<c058d9ff>] ? crash_notes_memory_init+0x0/0x31
 [<c01a70be>] ? __alloc_percpu+0xa/0xc
 [<c058da11>] ? crash_notes_memory_init+0x12/0x31
 [<c0101139>] ? do_one_initcall+0x4c/0x131
 [<c057b352>] ? kernel_init+0x127/0x178
 [<c057b22b>] ? kernel_init+0x0/0x178
 [<c0102df6>] ? kernel_thread_helper+0x6/0x10
Code: 45 a8 e9 65 ff ff ff 8b 4d 9c 8b 55 a0 8b 45 84 e8 31 fa ff ff 85 c0 89 45 a4 0f 89 fd 00 00 00 8b 45 84 8b 00 89 45 84 8b 55 84 <8b> 02 0f 18 00 90 8b 45 cc 03 05 a0 9b 57 c0 39 c2 0f 85 67 ff
EIP: [<c01a6b12>] pcpu_alloc+0x1cb/0x75e SS:ESP 0068:f5c69f2c
CR2: 0000000000000000
---[ end trace a7919e7f17c0a725 ]---

x86_64 boots fine. Have attached dmesg log.

Thanks
-Sachin

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Sachin Sant
IBM Linux Technology Center
India Systems and Technology Labs
Bangalore, India
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