From: Mike Frysinger Date: Wed, 25 Nov 2009 05:39:03 +0000 (+0000) Subject: Blackfin: drop ptrace() write support for fixed code/bootrom X-Git-Tag: accepted/tizen/common/20141203.182822~13261^2~29 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=340a1be1eed07bb46c2f2d853e60234c1d5bb1c3;p=platform%2Fkernel%2Flinux-arm64.git Blackfin: drop ptrace() write support for fixed code/bootrom These regions are either read-only and won't work anyways (bootrom), or we don't want people screwing with them because they're shared between all processes (fixed code). Signed-off-by: Mike Frysinger --- diff --git a/arch/blackfin/kernel/ptrace.c b/arch/blackfin/kernel/ptrace.c index 56b0ba1..65567dc 100644 --- a/arch/blackfin/kernel/ptrace.c +++ b/arch/blackfin/kernel/ptrace.c @@ -316,19 +316,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) case BFIN_MEM_ACCESS_CORE_ONLY: copied = access_process_vm(child, addr, &data, to_copy, 1); - if (copied) - break; - - /* hrm, why didn't that work ... maybe no mapping */ - if (addr >= FIXED_CODE_START && - addr + to_copy <= FIXED_CODE_END) { - copy_to_user_page(0, 0, 0, paddr, &data, to_copy); - copied = to_copy; - } else if (addr >= BOOT_ROM_START) { - memcpy(paddr, &data, to_copy); - copied = to_copy; - } - break; case BFIN_MEM_ACCESS_DMA: if (safe_dma_memcpy(paddr, &data, to_copy))