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,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by aws-us-west-2-korg-lkml-1.web.codeaurora.org (Postfix) with ESMTP id 87A9CC07D5F for ; Mon, 11 Jun 2018 17:53:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3D6B420869 for ; Mon, 11 Jun 2018 17:53:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3D6B420869 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933944AbeFKRxF (ORCPT ); Mon, 11 Jun 2018 13:53:05 -0400 Received: from mail-it0-f70.google.com ([209.85.214.70]:36883 "EHLO mail-it0-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932821AbeFKRxD (ORCPT ); Mon, 11 Jun 2018 13:53:03 -0400 Received: by mail-it0-f70.google.com with SMTP id p130-v6so9802281itp.2 for ; Mon, 11 Jun 2018 10:53:03 -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:message-id:subject:from:to; bh=dI+40BjrisDZkoBfZjRgGFkF5bSq5stKGyfOkYy4Y+8=; b=NSo4rp6cVQMFp5YIwUPYiUsZQBymoUnnLUiGODAZvx9o3IpihAxbCDD3nQnbYCol9n BJu94mtErepABoII3+63uq11pREUU/7/WOx3knnMf1TS2mCTDrn3Hqn/H7/p6uM0G38Y xodca8QFyWKAqvRtr3jq02lGFMSG6N7g+vA/Vcipa5/nnvllM2LSV4efY9tGNphsxAcZ ngUWWYMseNIq7/qUbmdgUB7wtAYg8lpzuXO5sinm/bE1DRnntAO+yXHBzievdB99OLad 6omrzsaK26Pb5//Yjz6kikn/Sy+k49UwXwNm1qdhP0fu5oSTvYiNyyFSz6QByvfgW8Da sTWA== X-Gm-Message-State: APt69E0K5zsD92v2WCJTjjhcnuBvs8Fctrv+fMtVJKum5Z+HZry6Yusd yM4xqyBB4zT6v+aNhNIQyxvWY9tjHTs+Aqi7vY1wakG7hWBS X-Google-Smtp-Source: ADUXVKJD+8K1t6T993ZR8Ge9h5Mife137t1iWFt+YMzyVYqu0zf1ds+p7fvsM9eqa88aXPKwcC4fdKFQv15qLYfYLeFP2tibNsiw MIME-Version: 1.0 X-Received: by 2002:a24:ac69:: with SMTP id m41-v6mr4245639iti.49.1528739582802; Mon, 11 Jun 2018 10:53:02 -0700 (PDT) Date: Mon, 11 Jun 2018 10:53:02 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c98a37056e616b45@google.com> Subject: WARNING in ext4_put_io_end_defer From: syzbot To: adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, tytso@mit.edu Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: 1aaccb5fa0ea Merge tag 'rtc-4.18' of git://git.kernel.org/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=177a36af800000 kernel config: https://syzkaller.appspot.com/x/.config?x=fa9c20c48788d1c1 dashboard link: https://syzkaller.appspot.com/bug?extid=2202a584a00fffd19fbf compiler: gcc (GCC) 8.0.1 20180413 (experimental) Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+2202a584a00fffd19fbf@syzkaller.appspotmail.com RAX: ffffffffffffffda RBX: 0000000020000500 RCX: 0000000000455867 RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000015 RBP: 0000000000000000 R08: 0000000020000200 R09: 0000000020000500 R10: 000000000010a034 R11: 0000000000000246 R12: 0000000000000014 R13: 0000000000000000 R14: 00000000004d2c08 R15: 0000000000000020 WARNING: CPU: 0 PID: 2416 at fs/ext4/page-io.c:206 ext4_add_complete_io fs/ext4/page-io.c:206 [inline] WARNING: CPU: 0 PID: 2416 at fs/ext4/page-io.c:206 ext4_put_io_end_defer+0x430/0x580 fs/ext4/page-io.c:269 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 2416 Comm: udevd Not tainted 4.17.0+ #95 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+0x1b9/0x294 lib/dump_stack.c:113 panic+0x22f/0x4de kernel/panic.c:184 __warn.cold.8+0x163/0x1b3 kernel/panic.c:536 report_bug+0x252/0x2d0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x1fc/0x4d0 arch/x86/kernel/traps.c:296 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992 RIP: 0010:ext4_add_complete_io fs/ext4/page-io.c:206 [inline] RIP: 0010:ext4_put_io_end_defer+0x430/0x580 fs/ext4/page-io.c:269 Code: 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 59 01 00 00 49 83 bf e0 02 00 00 00 0f 84 d9 fd ff ff e8 60 28 69 ff <0f> 0b e9 cd fd ff ff e8 94 4e a6 ff e9 89 fc ff ff 48 89 b5 20 ff RSP: 0018:ffff8801dae07140 EFLAGS: 00010006 RAX: ffff8801cae8c780 RBX: 1ffff1003b5c0e2d RCX: ffffffff821111c6 RDX: 0000000000010000 RSI: ffffffff821114e0 RDI: ffff8801cc4347a0 RBP: ffff8801dae07230 R08: ffff8801cae8c780 R09: ffffed002f401fd9 R10: ffffed002f401fd9 R11: ffff88017a00fecf R12: ffff88017a00fea0 R13: ffff880175a9c970 R14: ffff8801dae07208 R15: ffff8801cc4344c0 ext4_end_bio+0x234/0x6d0 fs/ext4/page-io.c:335 bio_endio+0x51c/0x9c0 block/bio.c:1836 req_bio_endio block/blk-core.c:281 [inline] blk_update_request+0x3aa/0xcb0 block/blk-core.c:3091 scsi_end_request+0xd3/0x870 drivers/scsi/scsi_lib.c:672 scsi_io_completion+0xcb2/0x1db0 drivers/scsi/scsi_lib.c:898 scsi_finish_command+0x542/0x8d0 drivers/scsi/scsi.c:248 scsi_softirq_done+0x3e2/0x4c0 drivers/scsi/scsi_lib.c:1687 __blk_mq_complete_request block/blk-mq.c:583 [inline] blk_mq_complete_request+0x355/0x630 block/blk-mq.c:620 scsi_mq_done+0xe2/0x430 drivers/scsi/scsi_lib.c:1998 virtscsi_complete_cmd+0x573/0x740 drivers/scsi/virtio_scsi.c:207 virtscsi_vq_done+0xc3/0x170 drivers/scsi/virtio_scsi.c:223 virtscsi_req_done+0xa7/0xd0 drivers/scsi/virtio_scsi.c:238 vring_interrupt+0x128/0x170 drivers/virtio/virtio_ring.c:950 __handle_irq_event_percpu+0x1c0/0xad0 kernel/irq/handle.c:149 handle_irq_event_percpu+0x98/0x1c0 kernel/irq/handle.c:189 handle_irq_event+0xa7/0x135 kernel/irq/handle.c:206 handle_edge_irq+0x20f/0x870 kernel/irq/chip.c:791 generic_handle_irq_desc include/linux/irqdesc.h:159 [inline] handle_irq+0x18c/0x2e7 arch/x86/kernel/irq_64.c:77 do_IRQ+0x78/0x190 arch/x86/kernel/irq.c:245 common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:642 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:783 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xa1/0xc0 kernel/locking/spinlock.c:184 Code: 68 a8 f1 88 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 21 48 83 3d fe dd 6e 01 00 74 0e 48 89 df 57 9d <0f> 1f 44 00 00 eb bb 0f 0b 0f 0b e8 1f 99 34 fa eb 97 e8 18 99 34 RSP: 0018:ffff8801cae97980 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffda RAX: dffffc0000000000 RBX: 0000000000000286 RCX: 0000000000000000 RDX: 1ffffffff11e350d RSI: 0000000000000001 RDI: 0000000000000286 RBP: ffff8801cae97990 R08: ffffed003950c819 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801ca8640c0 R13: 0000000000000000 R14: ffff8801cae97ba8 R15: ffff8801caae1918 spin_unlock_irqrestore include/linux/spinlock.h:365 [inline] ep_poll+0x357/0x11d0 fs/eventpoll.c:1824 do_epoll_wait+0x1b0/0x200 fs/eventpoll.c:2190 __do_sys_epoll_wait fs/eventpoll.c:2200 [inline] __se_sys_epoll_wait fs/eventpoll.c:2197 [inline] __x64_sys_epoll_wait+0x97/0xf0 fs/eventpoll.c:2197 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fbecd751943 Code: 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 83 3d b5 dc 2a 00 00 75 13 49 89 ca b8 e8 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 3b c4 00 00 48 89 04 24 RSP: 002b:00007fffb1bb2698 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000000000000bb8 RCX: 00007fbecd751943 RDX: 0000000000000008 RSI: 00007fffb1bb2790 RDI: 000000000000000a RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000bb8 R11: 0000000000000246 R12: 0000000000000003 R13: 0000000000000000 R14: 0000000002569010 R15: 0000000002563250 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds.. --- This bug is generated by a bot. 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