From e28cc71572da38a5a12c1cfe4d7032017adccf69 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 4 Jan 2006 16:20:40 -0800 Subject: Relax the rw_verify_area() error checking. In particular, allow over-large read- or write-requests to be downgraded to a more reasonable range, rather than considering them outright errors. We want to protect lower layers from (the sadly all too common) overflow conditions, but prefer to do so by chopping the requests up, rather than just refusing them outright. Cc: Peter Anvin Cc: Ulrich Drepper Cc: Andi Kleen Cc: Al Viro Signed-off-by: Linus Torvalds --- arch/mips/kernel/linux32.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/mips/kernel/linux32.c') diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c index 330cf84d21fe..60353f5acc48 100644 --- a/arch/mips/kernel/linux32.c +++ b/arch/mips/kernel/linux32.c @@ -420,7 +420,7 @@ asmlinkage ssize_t sys32_pread(unsigned int fd, char * buf, goto out; pos = merge_64(a4, a5); ret = rw_verify_area(READ, file, &pos, count); - if (ret) + if (ret < 0) goto out; ret = -EINVAL; if (!file->f_op || !(read = file->f_op->read)) @@ -455,7 +455,7 @@ asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char * buf, goto out; pos = merge_64(a4, a5); ret = rw_verify_area(WRITE, file, &pos, count); - if (ret) + if (ret < 0) goto out; ret = -EINVAL; if (!file->f_op || !(write = file->f_op->write)) -- cgit v1.2.3