Hi, the mask used in access_ok to check the validity of an address range evaluates to -TASK_SIZE for user processes. In case of CONFIG_MIPS32, TASK_SIZE is defined as 0x7fff8000UL, so -TASK_SIZE evaluates to 0x80008000, making access_ok return false for all addresses with bit 15 and 31 set. Surely the mask should be 0x80000000. Does anybody know why TASK_SIZE is set to 0x7fff8000 and not 0x80000000 ? Dimitri -- Dimitri Torfs | NSCE dimitri.torfs@sonycom.com | Sint Stevens Woluwestraat 55 tel: +32 2 2908451 | 1130 Brussel fax: +32 2 7262686 | Belgium
