On 9/23/21 7:57 PM, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 92477dd1faa6 Merge tag 's390-5.15-ebpf-jit-fixes' of git:/.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=1471785b300000 > kernel config: https://syzkaller.appspot.com/x/.config?x=e917f3dfc452c977 > dashboard link: https://syzkaller.appspot.com/bug?extid=111d2a03f51f5ae73775 > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1511c4f7300000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=132d1d1d300000 diff --git a/fs/io_uring.c b/fs/io_uring.c index fe5e613b960f..efb244deb081 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -9636,8 +9641,10 @@ static void io_uring_clean_tctx(struct io_uring_task *tctx) struct io_tctx_node *node; unsigned long index; - xa_for_each(&tctx->xa, index, node) + xa_for_each(&tctx->xa, index, node) { io_uring_del_tctx_node(index); + cond_resched(); + } if (wq) { /* * Must be after io_uring_del_task_file() (removes nodes under -- Jens Axboe
