On Thu, Mar 14, 2013 at 01:35:01PM +0900, [email protected] wrote: > From: Sahara <[email protected]> > > This makes return_address() return a correct value for CALLER_ADDRn. > To have a correct value from CALLER_ADDRn, we need to fix three points. > > * The unwind_frame() does not update frame->lr but frame->pc for backtrace. > So frame->pc is meaningful for backtrace. > > * data.level should be adjusted by adding 2 additional iteration levels. > With the current +1 level adjustment, the result of CALLER_ADDR1 will > be the same return address with CALLER_ADDR0. > > * The initialization of data.addr to NULL is needed. > When unwind_fame() fails right after data.level reaches zero, > the routine returns data.addr which has uninitialized garbage value. > > Signed-off-by: Sahara <[email protected]> > Reviewed-by: Dave Martin <[email protected]>
Please send this to the patch system. I think we should let this sit in -next for a bit (which we'll get anyway) to see what the effect is. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
