Re: [RFC][PATCH] Prevent overriding of Symbols in the Kernel, avoiding Undefined behaviour

[Ashutosh Naik]

Updating the correct email id of Anand Krishnan
Signed-off-by: Anand Krishnan <anandhkrishnan@xxxxxxxxxxx>

On 12/12/05, Ashutosh Naik <ashutosh.naik@xxxxxxxxx> wrote:
> This patch is the next logical step after the following two  threads
>
> http://www.uwsg.iu.edu/hypermail/linux/kernel/0511.2/2505.html
> http://www.ussg.iu.edu/hypermail/linux/kernel/0511.3/0036.html
>
> When a symbol is exported from the kernel, and say, a module would
> export the same symbol, there currently exists no mechanism to prevent
> the module from exporting this symbol. The module would still go ahead
> and export the symbol, the symbol table would now contain two copies
> of the exported symbol, and hell would break loose.
>
> This patch prevents that from happening, by checking the symbol table
> before relocation for all occurences of the Exported Symbol. If the
> symbol already exists, we branch out with -ENOEXEC. Currently, this
> search is sequential.
>
>
> Signed-off-by: Ashutosh Naik <ashutosh.naik@xxxxxxxxx>
> Signed-off-by: Anand Krishnan <anandhkrishnan@xxxxxxxxx>
>
>
>
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/