[PATCH v5 07/17] dax: remove the last BUG_ON() from fs/dax.c
STALE3643d
From: Ross Zwisler <hidden>
Date: 2016-10-07 21:08:54
Also in:
linux-fsdevel, linux-mm, linux-xfs, lkml, nvdimm
Subsystem:
filesystem direct access (dax), filesystems (vfs and infrastructure), the rest · Maintainers:
Dan Williams, Alexander Viro, Christian Brauner, Linus Torvalds
Revision v5 of 8 in this series.
Revisions (8)
Don't take down the kernel if we get an invalid 'from' and 'length' argument pair. Just warn once and return an error. Signed-off-by: Ross Zwisler <ross.zwisler-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> --- fs/dax.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/dax.c b/fs/dax.c
index ac28cdf..98189ac 100644
--- a/fs/dax.c
+++ b/fs/dax.c@@ -1194,7 +1194,8 @@ int dax_zero_page_range(struct inode *inode, loff_t from, unsigned length, /* Block boundary? Nothing to do */ if (!length) return 0; - BUG_ON((offset + length) > PAGE_SIZE); + if (WARN_ON_ONCE((offset + length) > PAGE_SIZE)) + return -EINVAL; memset(&bh, 0, sizeof(bh)); bh.b_bdev = inode->i_sb->s_bdev;
--
2.7.4