From: Jens Axboe <axboe@kernel.dk> mainline inclusion from mainline-5.6-rc4 commit 41726c9a50e7464beca7112d0aebf3a0090c62d2 category: feature bugzilla: https://bugzilla.openeuler.org/show_bug.cgi?id=27 CVE: NA --------------------------- We somehow never free the idr, even though we init it for every ctx. Free it when the rest of the ring data is freed. Fixes: 071698e13ac6 ("io_uring: allow registering credentials") Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: yangerkun <yangerkun@huawei.com> Reviewed-by: zhangyi (F) <yi.zhang@huawei.com> Signed-off-by: Cheng Jian <cj.chengjian@huawei.com> --- fs/io_uring.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/io_uring.c b/fs/io_uring.c index b02907e824f3..99dd85b92ec5 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -6274,6 +6274,7 @@ static void io_ring_ctx_free(struct io_ring_ctx *ctx) io_sqe_buffer_unregister(ctx); io_sqe_files_unregister(ctx); io_eventfd_unregister(ctx); + idr_destroy(&ctx->personality_idr); #if defined(CONFIG_UNIX) if (ctx->ring_sock) { -- 2.25.1