Hello,
I'm trying to use the rt10 patch on a 3.4.2 kernel on a powerpc (MPC8xx)
system, and I'm having the following Oops during Irq initialisation.
This happens with CONFIG_PREEMPT_RT_FULL.
It doesn't happen with CONFIG_PREEMPT__LL
May someone help ?
[ 0.000000] Memory: 125676k/131072k available (3680k kernel code,
5396k reserved, 160k data, 193k bss, 140k init)
[ 0.000000] Kernel virtual memory layout:
[ 0.000000] * 0xfffdf000..0xfffff000 : fixmap
[ 0.000000] * 0xfde00000..0xfe000000 : consistent mem
[ 0.000000] * 0xfddf6000..0xfde00000 : early ioremap
[ 0.000000] * 0xc9000000..0xfddf6000 : vmalloc & ioremap
[ 0.000000] NR_IRQS:512 nr_irqs:512 16
[ 0.000000] Unable to handle kernel paging request for data at
address 0x00000418
[ 0.000000] Faulting instruction address: 0xc0163398
[ 0.000000] Oops: Kernel access of bad area, sig: 11 [#1]
[ 0.000000] PREEMPT CMPC885
[ 0.000000] Modules linked in:
[ 0.000000] NIP: c0163398 LR: c02ae398 CTR: 00000000
[ 0.000000] REGS: c03b3d60 TRAP: 0300 Not tainted
(3.4.2-rt10-s3k-3.7.4+-svn2547)
[ 0.000000] MSR: 00001032 <ME,IR,DR,RI> CR: 22444482 XER: 20005208
[ 0.000000] DAR: 00000418, DSISR: c0000000
[ 0.000000] TASK = c039a3e8[0] 'swapper' THREAD: c03b2000
[ 0.000000] GPR00: c02ae398 c03b3e10 c039a3e8 00000414 0000000f
00000000 c032f744 00000011
[ 0.000000] GPR08: c039a3e8 c03b2000 00000000 00000001 22444482
10029aec 00000000 07ff9550
[ 0.000000] GPR16: 00000000 07bb6de8 00000000 07ff825c 07ff825c
07ff825c 00000000 00000000
[ 0.000000] GPR24: 07ffb3a0 ffffffed 00000001 00000000 c039d6d4
0000000f 00000414 00000414
[ 0.000000] NIP [c0163398] do_raw_spin_lock+0x34/0x174
[ 0.000000] LR [c02ae398] _raw_spin_lock_irqsave+0x30/0x48
[ 0.000000] Call Trace:
[ 0.000000] [c03b3e10] [07fe7f50] 0x7fe7f50 (unreliable)
[ 0.000000] [c03b3e40] [c02ae398] _raw_spin_lock_irqsave+0x30/0x48
[ 0.000000] [c03b3e50] [c0043050] try_to_wake_up+0x38/0x1a0
[ 0.000000] [c03b3e70] [c0036c58] kthread_create_on_node+0x9c/0x124
[ 0.000000] [c03b3f00] [c005c780] __setup_irq+0x2ac/0x464
[ 0.000000] [c03b3f30] [c005cdec] setup_irq+0x64/0xb8
[ 0.000000] [c03b3f50] [c0013e80] cpm_pic_init+0x14c/0x1f0
[ 0.000000] [c03b3f90] [c03798f0] mpc8xx_pics_init+0x2c/0x58
[ 0.000000] [c03b3fa0] [c0379cd4] cmpc885_pics_init+0x14/0xcc
[ 0.000000] [c03b3fb0] [c0377478] init_IRQ+0x24/0x34
[ 0.000000] [c03b3fc0] [c0375830] start_kernel+0x1cc/0x300
[ 0.000000] [c03b3ff0] [c0002218] start_here+0x38/0x9c
[ 0.000000] Instruction dump:
[ 0.000000] 9421ffd0 7d800026 93e1002c 90010034 93210014 93410018
9361001c 93810020
[ 0.000000] 93a10024 93c10028 91810010 7c7f1b78 <81230004> 6d20dead
2f804ead 409e0074
Best regards
C. Leroy
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