On Mon, 14 Jun 1999, David Dyck wrote:
>
> As Eyal Lebedinsky already mentioned
> init_task_union
> is not defined when creating scsi_mod.o
>
> Here's a little more info that I gleaned by looking at
> the preprocessor output of scsi_error.c
>
> gcc -D__KERNEL__ -I/usr/src/linux/include -Wall -Wstrict-prototypes -O2 \
> -fomit-frame-pointer -D__SMP__ -pipe -fno-strength-reduce -m486 \
> -malign-loops=2 -malign-jumps=2 -malign-functions=2 -DCPU=686 -DMODULE \
> -E scsi_error.c
>
> in /usr/src/linux/include/asm/pgtable.h
> the macro for_each_task is used in set_pgdir
> for_each_task is defined in include/linux/sched.h as
> #define for_each_task(p) \
> for (p = &init_task ; (p = p->next_task) != &init_task ; )
>
> [ set_pgdir is not called, so this probably isn't the problem ]
>
>
> and the macro init_task in scsi_error_handler
> defined in include/*/processor.h as (init_task_union.task)
>
> Seems like the problem is in the following lines in scsi_error_handler()
> of scsi_error.c:
>
> /* Become as one with the init task */
>
> exit_fs(current); /* current->fs->count--; */
> fs = init_task.fs;
> current->fs = fs;
> atomic_inc(&fs->count);
>
>
> How are modules supposed to access kernel data in init_task_union?
>
> David Dyck
>
>
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