On 9/1/23 11:22 AM, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 99d99825fc07 Merge tag 'nfs-for-6.6-1' of git://git.linux-.. > git tree: upstream > console+strace: https://syzkaller.appspot.com/x/log.txt?x=12e9fc13a80000 > kernel config: https://syzkaller.appspot.com/x/.config?x=cce54b04d9a3d05b > dashboard link: https://syzkaller.appspot.com/bug?extid=216e2ea6e0bf4a0acdd7 > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1749fa10680000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10211c10680000 This should fix it: diff --git a/io_uring/fdinfo.c b/io_uring/fdinfo.c index 300455b4bc12..c53678875416 100644 --- a/io_uring/fdinfo.c +++ b/io_uring/fdinfo.c @@ -93,6 +93,8 @@ __cold void io_uring_show_fdinfo(struct seq_file *m, struct file *f) struct io_uring_sqe *sqe; unsigned int sq_idx; + if (ctx->flags & IORING_SETUP_NO_SQARRAY) + break; sq_idx = READ_ONCE(ctx->sq_array[entry & sq_mask]); if (sq_idx > sq_mask) continue; -- Jens Axboe
