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authorLinus Torvalds <torvalds@g5.osdl.org>2006-01-04 16:20:40 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-04 16:20:40 -0800
commite28cc71572da38a5a12c1cfe4d7032017adccf69 (patch)
treebea9af22a98ea2988a38f5e9fc2467ccbbf3ae70 /fs/compat.c
parenta020ff412f0ecbb1e4aae1681b287e5785dd77b5 (diff)
downloadop-kernel-dev-e28cc71572da38a5a12c1cfe4d7032017adccf69.zip
op-kernel-dev-e28cc71572da38a5a12c1cfe4d7032017adccf69.tar.gz
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 <hpa@zytor.com> Cc: Ulrich Drepper <drepper@redhat.com> Cc: Andi Kleen <ak@suse.de> Cc: Al Viro <viro@ftp.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/compat.c')
-rw-r--r--fs/compat.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/compat.c b/fs/compat.c
index 8186341..55ac032 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1170,7 +1170,7 @@ static ssize_t compat_do_readv_writev(int type, struct file *file,
}
ret = rw_verify_area(type, file, pos, tot_len);
- if (ret)
+ if (ret < 0)
goto out;
fnv = NULL;
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