From 5816339310b2d9623cf413d33e538b45e815da5d Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 7 May 2008 02:24:28 -0700 Subject: [PATCH] sparc: Fix mmap VA span checking. We should not conditionalize VA range checks on MAP_FIXED. Signed-off-by: David S. Miller --- arch/sparc/kernel/sys_sparc.c | 3 +-- arch/sparc64/kernel/sys_sparc.c | 4 ++-- 2 files changed, 3 insertions(+), 4 deletions(-) diff --git a/arch/sparc/kernel/sys_sparc.c b/arch/sparc/kernel/sys_sparc.c index f188b5dc9fd0..e995491c4436 100644 --- a/arch/sparc/kernel/sys_sparc.c +++ b/arch/sparc/kernel/sys_sparc.c @@ -223,8 +223,7 @@ int sparc_mmap_check(unsigned long addr, unsigned long len, unsigned long flags) { if (ARCH_SUN4C_SUN4 && (len > 0x20000000 || - ((flags & MAP_FIXED) && - addr < 0xe0000000 && addr + len > 0x20000000))) + (addr < 0xe0000000 && addr + len > 0x20000000))) return -EINVAL; /* See asm-sparc/uaccess.h */ diff --git a/arch/sparc64/kernel/sys_sparc.c b/arch/sparc64/kernel/sys_sparc.c index 8d4761f15fa9..0dbc941f130e 100644 --- a/arch/sparc64/kernel/sys_sparc.c +++ b/arch/sparc64/kernel/sys_sparc.c @@ -549,13 +549,13 @@ int sparc64_mmap_check(unsigned long addr, unsigned long len, if (len >= STACK_TOP32) return -EINVAL; - if ((flags & MAP_FIXED) && addr > STACK_TOP32 - len) + if (addr > STACK_TOP32 - len) return -EINVAL; } else { if (len >= VA_EXCLUDE_START) return -EINVAL; - if ((flags & MAP_FIXED) && invalid_64bit_range(addr, len)) + if (invalid_64bit_range(addr, len)) return -EINVAL; } -- GitLab