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    SubjectRe: [PATCH -next] Input: i8042 - Fix pagefault caused by i8042_dmi_laptop_table
    Hi Jin,

    On Fri, Sep 11, 2009 at 12:16:01PM +0900, Jin Dongming wrote:
    > (This patch fixes bug of commit 1c49cd1bbb6e41e97079d389e86063ba5de825ed
    > titled "Input: i8042 - bypass AUX IRQ delivery test on laptops")
    >
    > When dmi_platform_init is called, the table i8042_dmi_laptop_table[] will
    > be checked. Because the end of this table is not "NULL", dmi_check_system
    > will lead to pagefault and oops will be happened.
    >
    > In fact I got following oops on boot:
    > Call Trace:
    > [<ffffffff813f86b8>] panic+0x7a/0x131
    > [<ffffffff8105b29b>] ? exit_ptrace+0x94/0x114
    > [<ffffffff81054acc>] do_exit+0x7a/0x695
    > [<ffffffff813fbaec>] oops_end+0xb9/0xc1
    > [<ffffffff81034037>] no_context+0x1f6/0x205
    > [<ffffffff81034212>] __bad_area_nosemaphore+0x1cc/0x1f2
    > [<ffffffff811f1739>] ? string+0x40/0x9f
    > [<ffffffff811f20cf>] ? vsnprintf+0x8b/0x426
    > [<ffffffff813fac0a>] ?_spin_unlock_irqrestore+0x29/0x41
    > [<ffffffff8103424b>] bad_area_nosemaphore+0x13/0x15
    > [<ffffffff813fcf9d>] do_page_fault+0x154/0x2a5
    > [<ffffffff813faef5>] page_fault+0x25/0x30
    > [<ffffffff81335895>] ? dmi_check_system+0x30/0x4b
    > [<ffffffff816eee5f>] i8042_init+0x2ca/0x3c1
    > [<ffffffff816ee5eb>] ? uhci_hcd_init+0x88/0xc0
    > [<ffffffff816eeb95>] ? i8042_init+0x0/0x3c1
    > [<ffffffff8100a069>] do_one_initcall+0x5e/0x15e
    > [<ffffffff816be167>] kernel_init+0x170/0x1ca
    > [<ffffffff81012c5a>] child_rip+0xa/0x20
    > [<ffffffff810125bd>] ? restore_args+0x0/0x30
    > [<ffffffff81bbdff7>] ? kernel_init+0x0/0x1ca
    > [<ffffffff81012c50>] ? child_rip+0x0/0x20
    >
    > I confirmed this patch fix this problem.
    >

    Thank you for the patch, I will ford it into the original change so that
    we don't crash the box in case someone will be bisecting...

    --
    Dmitry


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