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authorMiklos Szeredi <mszeredi@redhat.com>2026-03-26 11:45:44 +0100
committerMiklos Szeredi <mszeredi@redhat.com>2026-04-02 20:43:24 +0200
commite45f591f704aecec31dc738694a5e43acdfd020b (patch)
treec5bc2d11c896cca0d65751d5135df399f80d685b
parentda6fcc6dbddbef80e603d2f0c1554a9f2ac03742 (diff)
fuse: check connection state on notification
Check if the connection is fully initialized and connected before trying to process a notification form the fuse server. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
-rw-r--r--fs/fuse/dev.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 8d5bab05adf4..952dd56f0a02 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -2098,6 +2098,13 @@ static int fuse_notify_prune(struct fuse_conn *fc, unsigned int size,
static int fuse_notify(struct fuse_conn *fc, enum fuse_notify_code code,
unsigned int size, struct fuse_copy_state *cs)
{
+ /*
+ * Only allow notifications during while the connection is in an
+ * initialized and connected state
+ */
+ if (!fc->initialized || !fc->connected)
+ return -EINVAL;
+
/* Don't try to move folios (yet) */
cs->move_folios = false;