From: Miklos Szeredi <mszeredi@xxxxxxx>
[ Upstream commit 0d2783626a53d4c922f82d51fa675cb5d13f0d36 ]
fuse_try_move_page() is not prepared for replacing pages that have already
been read.
Reported-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
---
fs/fuse/dev.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index cc756cb..f2bbb85 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -1721,6 +1721,9 @@ copy_finish:
static int fuse_notify(struct fuse_conn *fc, enum fuse_notify_code code,
unsigned int size, struct fuse_copy_state *cs)
{
+ /* Don't try to move pages (yet) */
+ cs->move_pages = 0;
+
switch (code) {
case FUSE_NOTIFY_POLL:
return fuse_notify_poll(fc, size, cs);
--
2.1.0
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