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    SubjectRe: Badness in device_release at drivers/base/core.c:84
    Diffie <diffie@blazebox.homeip.net> wrote:
    >
    > Unable to handle kernel NULL pointer dereference at virtual address 00000120
    > printing eip:
    > c02a8cae
    > *pde = 00000000
    > Oops: 0000 [#1]
    > PREEMPT
    > CPU: 0
    > EIP: 0060:[<c02a8cae>] Not tainted VLI
    > EFLAGS: 00210286
    > EIP is at aic7xxx_proc_info+0x2e/0xc80
    > eax: c1bb25b0 ebx: c1bb2400 ecx: c038bb20 edx: 00000000
    > esi: 00000400 edi: f1715000 ebp: 412de000 esp: f620fecc
    > ds: 007b es: 007b ss: 0068
    > Process nautilus (pid: 3555, threadinfo=f620e000 task=f6216720)
    > Stack: 000001f7 00000000 00000000 c013c612 c0379eb0 00000000 00000000 f6613340
    > 00000000 00000000 c0379eb0 00000400 00000400 f1715000 412de000 c02956fc
    > c1bb2400 f1715000 f620ff60 00000000 00000400 00000000 c02956c0 c018bc91
    > Call Trace:
    > [<c013c612>] __alloc_pages+0x92/0x320
    > [<c02956fc>] proc_scsi_read+0x3c/0x60
    > [<c02956c0>] proc_scsi_read+0x0/0x60

    This patch should fix the oops.

    As for why the proc reading code was unable to locate the HBA: dunno, but
    this is a first step.

    Or maybe you don't have any adaptec controllers in the machine?

    (jejb, please apply..)


    25-akpm/drivers/scsi/aic7xxx_old/aic7xxx_proc.c | 2 +-
    1 files changed, 1 insertion(+), 1 deletion(-)

    diff -puN drivers/scsi/aic7xxx_old/aic7xxx_proc.c~aic7xxx_old-oops-fix drivers/scsi/aic7xxx_old/aic7xxx_proc.c
    --- 25/drivers/scsi/aic7xxx_old/aic7xxx_proc.c~aic7xxx_old-oops-fix Fri Aug 1 14:41:14 2003
    +++ 25-akpm/drivers/scsi/aic7xxx_old/aic7xxx_proc.c Fri Aug 1 14:41:20 2003
    @@ -92,7 +92,7 @@ aic7xxx_proc_info ( struct Scsi_Host *HB

    HBAptr = NULL;

    - for(p=first_aic7xxx; p->host != HBAptr; p=p->next)
    + for(p=first_aic7xxx; p && p->host != HBAptr; p=p->next)
    ;

    if (!p)
    _

    -
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