Messages in this thread | | | Date | Sat, 31 Mar 2007 12:40:49 -0700 | From | Andrew Morton <> | Subject | Re: 2.6.21-rc5-mm[12]: Oops on bootup in xor_see_2 |
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On Sat, 31 Mar 2007 17:36:47 +0000 Bernhard Rosenkraenzer <bero@arklinux.org> wrote:
> I'm getting this Oops when booting an 2.6.21-rc5-mm1 or 2.6.21-rc5-mm2 on an > Acer Aspire 1501 LMi in 32 bit mode (2.6.21-rc4-mm1 + hotfixes works > perfectly): > > xor: automatically using best checksumming function: pIII_sse > > BUG: unable to handle kernel NULL pointer dereference at virtual address > 00000010 > printing eip: > c02cb724 > *pde=00000000 > Oops: 0002 [#1] > last sysfs file: > Modules linked in: > CPU: 0 > EIP: 0060:[<c02cb724>] Not tainted VLI > EFLAGS: 00010212 (2.6.12-rc5-mm2) > EIP is at xor_sse_2+0x34/0x200 > eax: 00000010 ebx: fffea4df ecx: df8c3000 edx: df8c0000 > esi: 8005003b edi: c03ebce0 ebp: df8c3000 esp: dfd01ef8 > ds: 007b es: 007b fs: 00d8 gs: 0000 ss: 0068 > Process swapper (pid: 1, ti=dfd000000 task=c146aa10 task:ti=dfd00000 > Stack: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 > 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 > c13f1800 fffea4df 00000000 c02caa83 c03ebce0 df8c0000 00000000 c011bd7b > Call Trace: > [<c02caa83>] do_xor_speed+0x53/0xf0 > [<c011bd7b>] printk+0x1b/0x20 > [<c02cac02>] calibrate_xor_block+0x2e/0x1b0 > [<c03fe7a2>] kernel_init+0x92/0x1c0 > [<c0103dee>] ret_from_fork+0x6/0x1c > [<c03fe710>] kernel_init+0x0/0x1c0 > [<c03fe710>] kernel_init+0x0/0x1c0 > [<c0104937>] kernel_thread_helper+0x7/0x10 > ======================= > Code: 44 89 74 24 48 0f 20 c6 0f 06 0f 11 04 24 0f 11 4c 24 10 0f 11 54 24 20 > 0f > 11 5c 24 30 0f 18 82 00 01 00 00 0f 18 82 20 01 00 00 <00> 00 00 00 00 > 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > -
Dan, I'm assuming your changes in there are the cause of this. AFAICT all you're doing is moving code around, so it's a bit odd.
Bernhard, the config would be useful please.
Neil, is calibrate_xor_block() being rational?
b1 = (void *) __get_free_pages(GFP_KERNEL, 2); ... b2 = b1 + 2*PAGE_SIZE + BENCH_SIZE;
Is it correct to add BENCH_SIZE to b2 here? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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