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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8A6D4C5AD4C for ; Sun, 19 Nov 2023 11:28:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230104AbjKSL1Y (ORCPT ); Sun, 19 Nov 2023 06:27:24 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36008 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229454AbjKSL1X (ORCPT ); Sun, 19 Nov 2023 06:27:23 -0500 Received: from mail-pg1-f206.google.com (mail-pg1-f206.google.com [209.85.215.206]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 87D00F9 for ; Sun, 19 Nov 2023 03:27:18 -0800 (PST) Received: by mail-pg1-f206.google.com with SMTP id 41be03b00d2f7-5aaae6f46e1so5475837a12.3 for ; Sun, 19 Nov 2023 03:27:18 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700393238; x=1700998038; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Nt69CUjGl3apCloiHMcXyTW+kC9z4DvpekmWwYK97Pk=; b=bL3pSTXE94Vtqrwbo8O8hVQ0zOTqYC79zWmOO/cpwAyW4rg2YH6FTtrl1vzWY1ODlI vf3sOAHbBTKAsTlKszYFBmv+6C3uGK6qlBdmRP0X7/eQH+eD0/lRpEhE+PyXyFQBjPqB /OAnNE/0qEFmLzPy7tMlVabOJDy8yB+9oT3E603qDM4qVaFRHf79P1hJopCtmFIW13Tb ET0nxzr0VnRyyeItcMZjuCthliOe2vDk4YMFHMHlsV0T/nafNEU7dvuhkZ+OCso3FGRx 17ZYdMKfo2K+DBSrsT2hnK31m20DBDkhwitCEoBjHH80+B4tKxXfIT75BD0pss56Bhzm UJhA== X-Gm-Message-State: AOJu0YzS6m6Ve8mb1jib3xBDqf6+JRA2OivKrI4pA0dorwfL8egM88rK kNFSIw6601ULoc9ZoMr70vG+IicM/iu72GbyLJhPIm/miRws X-Google-Smtp-Source: AGHT+IEKx5ISHE4Qq6ls01G7Mie8unBDBQpl1RKn9ndvWj6gQ+HaGV957QGK6B9YDDS48ZjCZVFmizRyAluMSjqrjyNhwrGWXhcG MIME-Version: 1.0 X-Received: by 2002:a63:1450:0:b0:5bd:d44c:ca5f with SMTP id 16-20020a631450000000b005bdd44cca5fmr943612pgu.11.1700393237949; Sun, 19 Nov 2023 03:27:17 -0800 (PST) Date: Sun, 19 Nov 2023 03:27:17 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ed34c9060a7fa65a@google.com> Subject: [syzbot] [fs?] INFO: task hung in user_get_super (2) From: syzbot To: jack@suse.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 8de1e7afcc1c 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=13f3d658e80000 kernel config: https://syzkaller.appspot.com/x/.config?x=3e6feaeda5dcbc27 dashboard link: https://syzkaller.appspot.com/bug?extid=ba09f4a317431df6cddf compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=138c6fb7680000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=170665f4e80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/0f00907f9764/disk-8de1e7af.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/0502fe78c60d/vmlinux-8de1e7af.xz kernel image: https://storage.googleapis.com/syzbot-assets/192135168cc0/Image-8de1e7af.gz.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/d57f36bc56de/mount_2.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ba09f4a317431df6cddf@syzkaller.appspotmail.com INFO: task syz-executor214:6157 blocked for more than 143 seconds. Not tainted 6.6.0-rc7-syzkaller-g8de1e7afcc1c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor214 state:D stack:0 pid:6157 ppid:6136 flags:0x00000005 Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5382 [inline] __schedule+0x1364/0x23b4 kernel/sched/core.c:6695 schedule+0xc4/0x170 kernel/sched/core.c:6771 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6830 rwsem_down_read_slowpath+0x57c/0xe58 kernel/locking/rwsem.c:1086 __down_read_common kernel/locking/rwsem.c:1250 [inline] __down_read kernel/locking/rwsem.c:1263 [inline] down_read+0xa0/0x2fc kernel/locking/rwsem.c:1522 __super_lock fs/super.c:58 [inline] super_lock+0x160/0x328 fs/super.c:117 user_get_super+0xe8/0x1a0 fs/super.c:1059 quotactl_block fs/quota/quota.c:890 [inline] __do_sys_quotactl fs/quota/quota.c:955 [inline] __se_sys_quotactl fs/quota/quota.c:917 [inline] __arm64_sys_quotactl+0x508/0xca0 fs/quota/quota.c:917 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Showing all locks held in the system: 1 lock held by khungtaskd/29: #0: ffff80008e513840 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:302 2 locks held by getty/5843: #0: ffff0000d76ba0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800094c002f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 drivers/tty/n_tty.c:2206 1 lock held by syz-executor214/6156: 1 lock held by syz-executor214/6157: #0: ffff0000d83500e0 (&type->s_umount_key#44){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff0000d83500e0 (&type->s_umount_key#44){++++}-{3:3}, at: super_lock+0x160/0x328 fs/super.c:117 ============================================= --- 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. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup