Hi Clement, On Thu, Jul 09, 2020 at 10:22:04PM +0200, Clement Leger wrote: > When dtb is provided by the FSBL (first stage bootloader), it might > end up in the malloc zone initialized by barebox. While the dtb is > discarded after being unflatten, if the dtb is provided right after > barebox elf, then the malloc can overwrite it while unflattening it when > allocating nodes. > To avoid that, exclude the dtb from the malloc zone by checking if it > overlaps it. If so, determine the largest zone for the allocation and > modify the memory area to use that. Isn't there some safe place where the dtb can be copied to? Making the malloc area smaller seems a bit wasteful. Sascha -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
