I prepared boot kernel for cdboot image and got such error message.
Schelduling in interrupt
kernel BUG at sched.c:566!
invalid operand: 0000
CPU: 0
EIP: 0010:[<c0116f59>] Not tainted
EFLAGS: 00010296
eax: 00000018 ebx: c0106c70 ecx: 00000001 edx: 00000001
esi: 00000000 edi: c0242000 ebp: c0243fd4 esp: c0243fac
ds: 0018 es: 0018 ss: 0018
Process swapper (pid: 0, stackpage=c0243000)
Stack: c01fed7e 00098700 c0105000 c0242000 00000000 00000000 00000018
c0106c70
00098700 c0105000 0008e000 c0106d04 00000000 c0244687 c01f6f40
00003ffc
00003ffc 00003ffc 00003ffc c0264440 c01001c9
Call Trace: [<c0105000>] [<c0106c70>] [<c0105000>] [<c0106d04>]
Code: 0f 0b 36 02 76 ed 1f c0 5b e9 87 fb ff ff 0f 0b 2f 02 76 ed
Kernel panic: Aiee, killing interrupt handler!
In interrupt handler - not syncing
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