X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=fs%2Fio_uring.c;h=89aa8412b5f5972466e79c711cee475d8d42ebfe;hb=fabe38ab6b2bd9418350284c63825f13b8a6abba;hp=bbdbd56cf2ac9384b83e78945b2c6c0031cc346d;hpb=57cbec02f9b10992319ca578797c8059ac47d71e;p=thirdparty%2Fkernel%2Flinux.git

diff --git a/fs/io_uring.c b/fs/io_uring.c
index bbdbd56cf2ac9..89aa8412b5f59 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2215,6 +2215,7 @@ static int io_sqe_files_register(struct io_ring_ctx *ctx, void __user *arg,
 			fput(ctx->user_files[i]);
 
 		kfree(ctx->user_files);
+		ctx->user_files = NULL;
 		ctx->nr_user_files = 0;
 		return ret;
 	}
@@ -2244,6 +2245,10 @@ static int io_sq_offload_start(struct io_ring_ctx *ctx,
 		goto err;
 
 	if (ctx->flags & IORING_SETUP_SQPOLL) {
+		ret = -EPERM;
+		if (!capable(CAP_SYS_ADMIN))
+			goto err;
+
 		if (p->flags & IORING_SETUP_SQ_AFF) {
 			int cpu;