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=-0.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 C2504C432C0 for ; Wed, 20 Nov 2019 15:58:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 972AC20714 for ; Wed, 20 Nov 2019 15:58:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729198AbfKTP6L (ORCPT ); Wed, 20 Nov 2019 10:58:11 -0500 Received: from mail-io1-f72.google.com ([209.85.166.72]:55404 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732183AbfKTP6L (ORCPT ); Wed, 20 Nov 2019 10:58:11 -0500 Received: by mail-io1-f72.google.com with SMTP id c67so18733722iof.22 for ; Wed, 20 Nov 2019 07:58:09 -0800 (PST) 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=D0siQ5VXLYgnLbarDRDx2gxGicWQej9v5iWxcK9yLGk=; b=XGdXyyqGyL7p0AIPqnn/0owcxG50cRWojoyuoxBiSIGgkpNQdroHf9GBw/011dSw9v 1jEoc3QaPukBZjTuao5b/dJMCetWSAj6HLiOCUpZ5IaZq9VuCKnnWYotslbWG8X5TfFM JGECH3bIU3lFu8Ane5pfZZnuKF8YzEbd+qfwHeM5VBMykACYdlBV3enE3g2RUfwQ1bVC 4xuYjia8HuC6C5PERSHkzbfJE2YgoM1sVT/io+Jj5xj96E5+EBMvmIaBWo6TzxduBa7s Jksym+FTxaY57kEPdSgjDAVByVGTHthLt+/+g8He5fZxYt+DROHNbGWtonsgKXHQFJDS AJTA== X-Gm-Message-State: APjAAAXAqR0uizRunREZeIoebBtMXCLcq4AMqrFdwSH+dVuCVTi0Bgcg ZA2GrAa3D+6pWOIi/2ejmE8gvKN+orrXH2Wgen7AyRlS3WaW X-Google-Smtp-Source: APXvYqx8TtWXlYIgsSif3jENuikx/9gZNwqg/6rX/P2UATgf96UTqCSv9ftqDJznlfzIUvUtrKRLnRUPeqsmE8ZjYTnKykjxr9qu MIME-Version: 1.0 X-Received: by 2002:a92:831d:: with SMTP id f29mr4379730ild.263.1574265488544; Wed, 20 Nov 2019 07:58:08 -0800 (PST) Date: Wed, 20 Nov 2019 07:58:08 -0800 In-Reply-To: <00000000000072cb6c0597635d04@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000003a1f180597c93ffe@google.com> Subject: Re: INFO: trying to register non-static key in io_cqring_ev_posted From: syzbot To: axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: io-uring-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org syzbot has found a reproducer for the following crash on: HEAD commit: 5d1131b4 Add linux-next specific files for 20191119 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=140b0412e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=b60c562d89e5a8df dashboard link: https://syzkaller.appspot.com/bug?extid=0d818c0d39399188f393 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=169b29d2e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14b3956ae00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+0d818c0d39399188f393@syzkaller.appspotmail.com RSP: 002b:00007ffddd565408 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412a9 RDX: 0000000000000001 RSI: 0000000020000340 RDI: 00000000000002a6 RBP: 0000000000011c3e R08: 0000000000000001 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004021f0 R13: 0000000000402280 R14: 0000000000000000 R15: 0000000000000000 INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 1 PID: 8725 Comm: syz-executor376 Not tainted 5.4.0-rc8-next-20191119-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+0x197/0x210 lib/dump_stack.c:118 assign_lock_key kernel/locking/lockdep.c:881 [inline] register_lock_class+0x179e/0x1850 kernel/locking/lockdep.c:1190 __lock_acquire+0xf4/0x4a00 kernel/locking/lockdep.c:3837 lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4485 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:159 __wake_up_common_lock+0xc8/0x150 kernel/sched/wait.c:122 __wake_up+0xe/0x10 kernel/sched/wait.c:142 io_cqring_ev_posted+0xaa/0x120 fs/io_uring.c:655 io_cqring_overflow_flush+0x6d4/0xa90 fs/io_uring.c:702 io_ring_ctx_wait_and_kill+0x20a/0x770 fs/io_uring.c:4382 io_uring_create fs/io_uring.c:4719 [inline] io_uring_setup+0x123d/0x1ca0 fs/io_uring.c:4745 __do_sys_io_uring_setup fs/io_uring.c:4758 [inline] __se_sys_io_uring_setup fs/io_uring.c:4755 [inline] __x64_sys_io_uring_setup+0x54/0x80 fs/io_uring.c:4755 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4412a9 Code: e8 5c ae 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffddd565408 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412a9 RDX: 0000000000000001 RSI: 0000000020000340 RDI: 00000000000002a6 RBP: 0000000000011c3e R08: 0000000000000001 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004021f0 R13: 0000000000402280 R14: 0000000000000000 R15: 0000000000000000 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 8725 Comm: syz-executor376 Not tainted 5.4.0-rc8-next-20191119-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__wake_up_common+0xdf/0x610 kernel/sched/wait.c:86 Code: 05 00 00 4c 8b 43 38 49 83 e8 18 49 8d 78 18 48 39 7d d0 0f 84 64 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 01 00 0f 85 0d 05 00 00 49 8b 40 18 89 55 b0 31 db 49 bc 00 RSP: 0018:ffff888089c87b00 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff8880880c1120 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 1ffffffff13913ee RDI: 0000000000000000 RBP: ffff888089c87b58 R08: ffffffffffffffe8 R09: ffff888089c87ba8 R10: ffffed1011390f59 R11: 0000000000000003 R12: 0000000000000001 R13: 0000000000000286 R14: 0000000000000000 R15: 0000000000000003 FS: 00000000025cb880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000340 CR3: 000000009a26b000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __wake_up_common_lock+0xea/0x150 kernel/sched/wait.c:123 __wake_up+0xe/0x10 kernel/sched/wait.c:142 io_cqring_ev_posted+0xaa/0x120 fs/io_uring.c:655 io_cqring_overflow_flush+0x6d4/0xa90 fs/io_uring.c:702 io_ring_ctx_wait_and_kill+0x20a/0x770 fs/io_uring.c:4382 io_uring_create fs/io_uring.c:4719 [inline] io_uring_setup+0x123d/0x1ca0 fs/io_uring.c:4745 __do_sys_io_uring_setup fs/io_uring.c:4758 [inline] __se_sys_io_uring_setup fs/io_uring.c:4755 [inline] __x64_sys_io_uring_setup+0x54/0x80 fs/io_uring.c:4755 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4412a9 Code: e8 5c ae 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffddd565408 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412a9 RDX: 0000000000000001 RSI: 0000000020000340 RDI: 00000000000002a6 RBP: 0000000000011c3e R08: 0000000000000001 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004021f0 R13: 0000000000402280 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 8d482760e7208707 ]--- RIP: 0010:__wake_up_common+0xdf/0x610 kernel/sched/wait.c:86 Code: 05 00 00 4c 8b 43 38 49 83 e8 18 49 8d 78 18 48 39 7d d0 0f 84 64 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 01 00 0f 85 0d 05 00 00 49 8b 40 18 89 55 b0 31 db 49 bc 00 RSP: 0018:ffff888089c87b00 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff8880880c1120 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 1ffffffff13913ee RDI: 0000000000000000 RBP: ffff888089c87b58 R08: ffffffffffffffe8 R09: ffff888089c87ba8 R10: ffffed1011390f59 R11: 0000000000000003 R12: 0000000000000001 R13: 0000000000000286 R14: 0000000000000000 R15: 0000000000000003 FS: 00000000025cb880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000340 CR3: 000000009a26b000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400