From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 392E6C4CECE for ; Sat, 14 Mar 2020 04:02:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 198B12074B for ; Sat, 14 Mar 2020 04:02:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726485AbgCNECE (ORCPT ); Sat, 14 Mar 2020 00:02:04 -0400 Received: from mail-io1-f71.google.com ([209.85.166.71]:47284 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725783AbgCNECD (ORCPT ); Sat, 14 Mar 2020 00:02:03 -0400 Received: by mail-io1-f71.google.com with SMTP id w21so7973272iod.14 for ; Fri, 13 Mar 2020 21:02:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=DBwJriMlM9SYUClSqGmnORw3G1P+BJ+ON7TkScNMz64=; b=qvUbrecGxZJiY+SStSGTV6+lGSkQuF2javDW+5whF2sDoKYZTdAjMgWg2C8/T2EL5Q JxHRWp4bVQN5QjBCsGGsGbBc6CBZYJEHn4i7W/7JAeSl7qSRPSHvQ/Voz4S38bw56d4p UCSGCEYvZ1Qhu3OU4fY8ITU8+ki2j1oHhiUbhKh+Q9oXjRp4ZcLY7r/Wc39mHij40onI J08MO+fCvGQpduvla+25tDqY9m9k5Uentv/R+SbtUR7r1htQuxP04ZS+76jsNQhqARVx G3ol7tIgjAj8xX/DOSBTUsVbuBnJsAo5imRQuc7mV5FCBZxMqw3enKCjqSwYe+lvd99c XLUA== X-Gm-Message-State: ANhLgQ2vsKPvOqS22Epk2OYuGRm3bYKbqlfEW3mvwZlL7+GBQVXslbob mX/f5srdZoRp2OlGXJF4spgmf2uVxbfLDe3X+bvTAG32zzCU X-Google-Smtp-Source: ADFU+vupJLHw9fKO6B9jem1RLsOpvP0yw016OzW99SMSpx+q9uZCRPWMRqTG7xOR9vmrUCIgfyVfcZ99FmWJLbDMHyXGyXn7HJbj MIME-Version: 1.0 X-Received: by 2002:a92:afc1:: with SMTP id v62mr16687352ill.308.1584158522545; Fri, 13 Mar 2020 21:02:02 -0700 (PDT) Date: Fri, 13 Mar 2020 21:02:02 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000011efd05a0c8a609@google.com> Subject: Re: WARNING in idr_destroy From: syzbot To: airlied@linux.ie, anenbupt@gmail.com, daniel@ffwll.ch, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot has tested the proposed patch but the reproducer still triggered crash: WARNING in idr_destroy RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000203 R14: 00000000004c3e56 R15: 0000000000000008 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 9261 at lib/radix-tree.c:682 radix_tree_free_nodes lib/radix-tree.c:682 [inline] WARNING: CPU: 1 PID: 9261 at lib/radix-tree.c:682 idr_destroy+0x1ae/0x260 lib/radix-tree.c:1572 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 9261 Comm: syz-executor.2 Not tainted 5.6.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fb/0x318 lib/dump_stack.c:118 panic+0x264/0x7a9 kernel/panic.c:221 __warn+0x209/0x210 kernel/panic.c:582 report_bug+0x1b6/0x2f0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0xcf/0x1c0 arch/x86/kernel/traps.c:267 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:radix_tree_free_nodes lib/radix-tree.c:682 [inline] RIP: 0010:idr_destroy+0x1ae/0x260 lib/radix-tree.c:1572 Code: 53 5f f9 48 89 df 48 c7 c6 10 73 17 88 e8 ca 6c 4c f9 4c 3b 65 b8 74 57 e8 7f 53 5f f9 4d 89 fc e9 67 ff ff ff e8 72 53 5f f9 <0f> 0b eb d5 89 f9 80 e1 07 38 c1 7c 84 e8 e0 85 9c f9 e9 7a ff ff RSP: 0018:ffffc90001e47ba0 EFLAGS: 00010293 RAX: ffffffff8817cc0e RBX: ffff8880914be458 RCX: ffff8880a6fee040 RDX: 0000000000000000 RSI: 0000000000000040 RDI: ffff8880914be448 RBP: ffffc90001e47be8 R08: ffffffff8817cb80 R09: ffffed10130a7981 R10: ffffed10130a7981 R11: 0000000000000000 R12: ffff8880914be440 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 drm_mode_create_lease_ioctl+0x133c/0x1860 drivers/gpu/drm/drm_lease.c:585 drm_ioctl_kernel+0x2cf/0x410 drivers/gpu/drm/drm_ioctl.c:786 drm_ioctl+0x52f/0x890 drivers/gpu/drm/drm_ioctl.c:886 vfs_ioctl fs/ioctl.c:47 [inline] ksys_ioctl fs/ioctl.c:763 [inline] __do_sys_ioctl fs/ioctl.c:772 [inline] __se_sys_ioctl+0x113/0x190 fs/ioctl.c:770 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:770 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c479 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f833d7e0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f833d7e16d4 RCX: 000000000045c479 RDX: 0000000020000040 RSI: ffffffffffffffc6 RDI: 0000000000000003 RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000203 R14: 00000000004c3e56 R15: 0000000000000008 Kernel Offset: disabled Rebooting in 86400 seconds.. Tested on: commit: 48d976f6 drm/lease: fix WARNING in idr_destroy git tree: https://github.com/hqj/hqjagain_test.git drm console output: https://syzkaller.appspot.com/x/log.txt?x=17a15753e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=cec95cb58b6f6294 dashboard link: https://syzkaller.appspot.com/bug?extid=05835159fe322770fe3d compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81)