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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C374DECAAA1 for ; Mon, 24 Oct 2022 10:08:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:To:From:Subject:Message-ID:Date: MIME-Version:Reply-To:Cc:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=H9b5MIpf4kkxdQU3NaWAAE6F/fE6Tp1zB3NaYGfx0b0=; b=jiU NKfqj5gSEBDCvkxsoi2HVhPyS6N1megvIq940eeBEaLx1TTbuaxeWKF1SGzYP9NXAv42ABkKcN0U+ 2mZCh8If1f7m6svp/zf0mhcJoRg66y0WPWEbNT0ocWA7h86eZW6nkhc6RP2cJRdMJILfpeTAsaYWA 1DQzHXt2g4mia+enX1s70ziGsBNlKBdOryjlu3+H4RQ4ff153l4h2iGaT4AfVPZwFBeD+u+ViRAvQ hiStkaWy/Y4vWNYlaOGKuVzgYP/4l+r3MGVwBHFI73b2GAxySrbgQv83vaPRTrWDEpFL5MPF9zhW3 RahuvuzH14BG8O4XZe3rXvY8GdbylfQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1omuMy-000cVh-Sx; Mon, 24 Oct 2022 10:07:45 +0000 Received: from mail-il1-f198.google.com ([209.85.166.198]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1omuMv-000cSg-Ec for linux-arm-kernel@lists.infradead.org; Mon, 24 Oct 2022 10:07:43 +0000 Received: by mail-il1-f198.google.com with SMTP id i4-20020a056e02152400b002fa876e95b3so8328675ilu.17 for ; Mon, 24 Oct 2022 03:07:39 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=5/ph2+H3Trne1yiKW3qaHgPJwMgm6RCNSzQdLyP5X4c=; b=zvItL40OfWsNf3o0gExzM2eM6mD8+93DE0338y7fhthBmxWy11NXDRkVu5J5qtSajb vY79MJzdQGhcCbZvUiQeoTnjT1bEiOsZ38PCiDPV/y9NDYkBpiz7hFsXqCTu7R7/XnaB pfrrVt0jZxxqFDpK4wLxYulBk8qt9tbyYLR0PF3hQVac5+jkuW3i3tV6B4aUkc22sxfT gyRxRzQjg2yK21rVEZmUmVG9XZAccDeP4wHfDFl/GbRSaXzkYFAJmp06mTY6y3PPn6TH c9VuzTPfoXmDUsMgymro/QG7vg7WQHJAepI/BNFWYZL6ozByAzn0L+iQJ/In3dj49M0m 4Ivw== X-Gm-Message-State: ACrzQf3+ODX7CG/bs52jv8eqEHVsU4Be0LBuQ/nSRgQtNWE1gXOVmE1P 0OxGVL1/NtjgIAHpbYZZD8BH5+axByE4b0rR4QgCYide2Czz X-Google-Smtp-Source: AMsMyM4QBOPAD3/t1YC3VJwY1O83zmHzq88mtWMNMBKPbU8D0Z/607i+hq6gHYwnZpmKqNNb7UYabfriW9OS++Di3ziiVO55z6QW MIME-Version: 1.0 X-Received: by 2002:a05:6638:4190:b0:372:4b79:5d93 with SMTP id az16-20020a056638419000b003724b795d93mr3954715jab.216.1666606058573; Mon, 24 Oct 2022 03:07:38 -0700 (PDT) Date: Mon, 24 Oct 2022 03:07:38 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001a167a05ebc4f62b@google.com> Subject: [syzbot] INFO: task hung in nilfs_detach_log_writer From: syzbot To: brauner@kernel.org, broonie@kernel.org, catalin.marinas@arm.com, ebiederm@xmission.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, madvenka@linux.microsoft.com, mark.rutland@arm.com, scott@os.amperecomputing.com, syzkaller-bugs@googlegroups.com, will@kernel.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221024_030741_518774_46D2C3BA X-CRM114-Status: UNSURE ( 5.50 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hello, syzbot found the following issue on: HEAD commit: bbed346d5a96 Merge branch 'for-next/core' into for-kernelci git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=12c63b3c880000 kernel config: https://syzkaller.appspot.com/x/.config?x=3a4a45d2d827c1e dashboard link: https://syzkaller.appspot.com/bug?extid=e3973c409251e136fdd0 compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13010d3c880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16c58e6e880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/e8e91bc79312/disk-bbed346d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c1cb3fb3b77e/vmlinux-bbed346d.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/ef6217a5c5b6/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e3973c409251e136fdd0@syzkaller.appspotmail.com INFO: task syz-executor217:3091 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor217 state:D stack: 0 pid: 3091 ppid: 3089 flags:0x00000008 Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 schedule_timeout+0x64/0x1b4 kernel/time/timer.c:1911 do_wait_for_common+0xf4/0x184 kernel/sched/completion.c:85 __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x48/0x60 kernel/sched/completion.c:138 __flush_work+0xd4/0x144 kernel/workqueue.c:3073 flush_work+0x24/0x38 kernel/workqueue.c:3094 nilfs_segctor_destroy fs/nilfs2/segment.c:2726 [inline] nilfs_detach_log_writer+0x1e0/0x4d0 fs/nilfs2/segment.c:2810 nilfs_put_super+0x28/0x9c fs/nilfs2/super.c:468 generic_shutdown_super+0x8c/0x190 fs/super.c:491 kill_block_super+0x30/0x78 fs/super.c:1427 deactivate_locked_super+0x70/0xe8 fs/super.c:332 deactivate_super+0xd0/0xd4 fs/super.c:363 cleanup_mnt+0x1f8/0x234 fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0xc4/0x14c kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x174/0x1f0 arch/arm64/kernel/signal.c:1127 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/11: #0: ffff80000d433568 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/12: #0: ffff80000d433bb8 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/27: #0: ffff80000d433440 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:279 2 locks held by getty/2727: #0: ffff0000c7906098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244 #1: ffff80000f6162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177 1 lock held by syz-executor217/3091: #0: ffff0000c90930e0 (&type->s_umount_key#41){+.+.}-{3:3}, at: deactivate_super+0xc8/0xd4 fs/super.c:362 3 locks held by kworker/1:0/3113: #0: ffff0000c0010738 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff800012703d80 ((work_completion)(&sci->sc_iput_work)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff0000c9093650 (sb_internal#2){.+.+}-{0:0}, at: nilfs_evict_inode+0x94/0x1cc fs/nilfs2/inode.c:911 ============================================= --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel