From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4DEB313CFAD for ; Wed, 6 Nov 2024 08:07:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730880450; cv=none; b=FS4LdwtEGIy07dUCptu/qpe5rLdSwz5dCxjNx4LsZnO1wthqDKux34eszfk9ATpk0uCKovKItyjuDG3F9rqmmuG305vwnpyENKLSvJOtpB8IbmO9Q0kvZeqTbTxq86udUQRnG7Dy06mTMnVwx4CQEQTHx2e50y+x1dVxuJx3WvQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730880450; c=relaxed/simple; bh=wZuRRNuxDidz574zavocng2QVbBI6mpaJ/vfuUVYeuU=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=QCQJI9fSOZrnRXkpBYVA8FM75LJmuROkmXQZS7SORa50E/tGGV8eYzqcyBO303b6zI1Yz8R/pvcIcGwyBVk2d1s6KmEtInQzD+X5TbZ7QPKASNAWuqlNWoAcEKyuv0StBkibEqO+/Q/OdMuGjJs8D2UazQqO23YW8G5UJYZKj+g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f72.google.com with SMTP id ca18e2360f4ac-83aae46538bso671005339f.1 for ; Wed, 06 Nov 2024 00:07:26 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730880445; x=1731485245; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=PfIImr7QeZx6eB64QAk6EhoI/9c7u+cLneLPWLTBsos=; b=lIHtoZJj82EzBPnsHbXBKTh+0SECcRLnhUcFWAAiq7Smsn3tlzLqy0jH+GYmE9HwEd WLQzvz/8xkRU2RZizZQ0hnDUlEsYBEcYQSumNTln3oqLPRHa24RKkqxc50XsbAVl2zjg cXUruQavyFaxdVnbALGFELPVhxlzN1RVHChzspRvv3HtPddFo8rLYiuN94GEVuHKj6A9 zt1x6Jw1s4sVklGQryX+yhrNwv2T9CpYyslksz//PnNgxdVs2QSRqvIBLJrsh/uHeOK/ hLXl3q7MSC2JYptXRqdkxUsITWPtn2bVhc4MT4agW0b14pC4kQroKzNpMYfG/PbO/RBE +Akg== X-Forwarded-Encrypted: i=1; AJvYcCUgRvsejVUpBSKOJw8JUQLuOGyU3WgDbRyFzlLpovFuMnU/7w6pXgGbB30x+Zmpewlfal5B0QWOdEkjtg==@lists.linux.dev X-Gm-Message-State: AOJu0YwjqddbSTXSY90BLYlS5wVmTitjmZO/MoXK6NHBZ6x+5TnLLFLC 2LsPdFzwzZIvyRc/ifMWDCGI62A+659M6gtfSefQUPHXnRXmmNcuLloU3uQY+2ftS9AP7RyxA99 A1mvTfBXnfL1rm5AefHaDY/Wpnm37IaGjZt0gdINZQcw9Fr5oHR1babI= X-Google-Smtp-Source: AGHT+IFxSqm4sTsHDYqXWiLtHaAKVn2uKzFi/vW0TMUkL0r0ORBdfK5FkiigENkHH4yhRNaZ3KflozltQQCOweMZiE64s6xz24af Precedence: bulk X-Mailing-List: ocfs2-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:17cc:b0:3a6:c000:4443 with SMTP id e9e14a558f8ab-3a6c000470amr117379275ab.20.1730880445368; Wed, 06 Nov 2024 00:07:25 -0800 (PST) Date: Wed, 06 Nov 2024 00:07:25 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <672b23bd.050a0220.2a847.1ba3.GAE@google.com> Subject: [syzbot] [ocfs2?] INFO: task hung in flush_delayed_work From: syzbot To: jack@suse.com, jlbec@evilplan.org, joseph.qi@linux.alibaba.com, linux-kernel@vger.kernel.org, mark@fasheh.com, ocfs2-devel@lists.linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 2e1b3cc9d7f7 Merge tag 'arm-fixes-6.12-2' of git://git.ker.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=16b25d5f980000 kernel config: https://syzkaller.appspot.com/x/.config?x=11254d3590b16717 dashboard link: https://syzkaller.appspot.com/bug?extid=ab509d831d9b0222f5fd compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=142f4e30580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12c00d87980000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/6a49054c25b2/disk-2e1b3cc9.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/0d6873a86739/vmlinux-2e1b3cc9.xz kernel image: https://storage.googleapis.com/syzbot-assets/630443e7db25/bzImage-2e1b3cc9.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/bad1c1b4973a/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ab509d831d9b0222f5fd@syzkaller.appspotmail.com INFO: task syz-executor186:5865 blocked for more than 143 seconds. Not tainted 6.12.0-rc6-syzkaller-00077-g2e1b3cc9d7f7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor186 state:D stack:24080 pid:5865 tgid:5865 ppid:5860 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0x184f/0x4c30 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6782 schedule_timeout+0xb0/0x310 kernel/time/timer.c:2591 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x355/0x620 kernel/sched/completion.c:148 __flush_work+0xa37/0xc50 kernel/workqueue.c:4217 flush_work kernel/workqueue.c:4238 [inline] flush_delayed_work+0x169/0x1c0 kernel/workqueue.c:4260 invalidate_dquots fs/quota/dquot.c:577 [inline] dquot_disable+0x7a7/0x1cd0 fs/quota/dquot.c:2295 ocfs2_disable_quotas+0xf3/0x210 fs/ocfs2/super.c:963 ocfs2_dismount_volume+0x1ad/0x8f0 fs/ocfs2/super.c:1870 generic_shutdown_super+0x13b/0x2d0 fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc6/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373 task_work_run+0x251/0x310 kernel/task_work.c:239 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0xa2f/0x28e0 kernel/exit.c:939 do_group_exit+0x207/0x2c0 kernel/exit.c:1088 __do_sys_exit_group kernel/exit.c:1099 [inline] __se_sys_exit_group kernel/exit.c:1097 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1097 x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe7b944e939 RSP: 002b:00007ffd2b477288 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fe7b944e939 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 00007fe7b94cf390 R08: ffffffffffffffb8 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000246 R12: 00007fe7b94cf390 R13: 0000000000000000 R14: 00007fe7b94d0100 R15: 00007fe7b941c830 INFO: task syz-executor186:5866 blocked for more than 144 seconds. Not tainted 6.12.0-rc6-syzkaller-00077-g2e1b3cc9d7f7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor186 state:D stack:23872 pid:5866 tgid:5866 ppid:5859 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0x184f/0x4c30 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6782 schedule_timeout+0xb0/0x310 kernel/time/timer.c:2591 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x355/0x620 kernel/sched/completion.c:148 __flush_work+0xa37/0xc50 kernel/workqueue.c:4217 flush_work kernel/workqueue.c:4238 [inline] flush_delayed_work+0x169/0x1c0 kernel/workqueue.c:4260 invalidate_dquots fs/quota/dquot.c:577 [inline] dquot_disable+0x7a7/0x1cd0 fs/quota/dquot.c:2295 ocfs2_disable_quotas+0xf3/0x210 fs/ocfs2/super.c:963 ocfs2_dismount_volume+0x1ad/0x8f0 fs/ocfs2/super.c:1870 generic_shutdown_super+0x13b/0x2d0 fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc6/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373 task_work_run+0x251/0x310 kernel/task_work.c:239 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0xa2f/0x28e0 kernel/exit.c:939 do_group_exit+0x207/0x2c0 kernel/exit.c:1088 __do_sys_exit_group kernel/exit.c:1099 [inline] __se_sys_exit_group kernel/exit.c:1097 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1097 x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe7b944e939 RSP: 002b:00007ffd2b477288 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fe7b944e939 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 00007fe7b94cf390 R08: ffffffffffffffb8 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000246 R12: 00007fe7b94cf390 R13: 0000000000000000 R14: 00007fe7b94d0100 R15: 00007fe7b941c830 INFO: task syz-executor186:5867 blocked for more than 145 seconds. Not tainted 6.12.0-rc6-syzkaller-00077-g2e1b3cc9d7f7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor186 state:D stack:24432 pid:5867 tgid:5867 ppid:5862 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0x184f/0x4c30 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6782 schedule_timeout+0xb0/0x310 kernel/time/timer.c:2591 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x355/0x620 kernel/sched/completion.c:148 __flush_work+0xa37/0xc50 kernel/workqueue.c:4217 flush_work kernel/workqueue.c:4238 [inline] flush_delayed_work+0x169/0x1c0 kernel/workqueue.c:4260 invalidate_dquots fs/quota/dquot.c:577 [inline] dquot_disable+0x7a7/0x1cd0 fs/quota/dquot.c:2295 ocfs2_disable_quotas+0xf3/0x210 fs/ocfs2/super.c:963 ocfs2_dismount_volume+0x1ad/0x8f0 fs/ocfs2/super.c:1870 generic_shutdown_super+0x13b/0x2d0 fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc6/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373 task_work_run+0x251/0x310 kernel/task_work.c:239 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0xa2f/0x28e0 kernel/exit.c:939 do_group_exit+0x207/0x2c0 kernel/exit.c:1088 __do_sys_exit_group kernel/exit.c:1099 [inline] __se_sys_exit_group kernel/exit.c:1097 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1097 x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe7b944e939 RSP: 002b:00007ffd2b477288 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fe7b944e939 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 00007fe7b94cf390 R08: ffffffffffffffb8 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000246 R12: 00007fe7b94cf390 R13: 0000000000000000 R14: 00007fe7b94d0100 R15: 00007fe7b941c830 INFO: task syz-executor186:5868 blocked for more than 146 seconds. Not tainted 6.12.0-rc6-syzkaller-00077-g2e1b3cc9d7f7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor186 state:D stack:23584 pid:5868 tgid:5868 ppid:5861 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0x184f/0x4c30 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6782 schedule_timeout+0xb0/0x310 kernel/time/timer.c:2591 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x355/0x620 kernel/sched/completion.c:148 __flush_work+0xa37/0xc50 kernel/workqueue.c:4217 flush_work kernel/workqueue.c:4238 [inline] flush_delayed_work+0x169/0x1c0 kernel/workqueue.c:4260 invalidate_dquots fs/quota/dquot.c:577 [inline] dquot_disable+0x7a7/0x1cd0 fs/quota/dquot.c:2295 ocfs2_disable_quotas+0xf3/0x210 fs/ocfs2/super.c:963 ocfs2_dismount_volume+0x1ad/0x8f0 fs/ocfs2/super.c:1870 generic_shutdown_super+0x13b/0x2d0 fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc6/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373 task_work_run+0x251/0x310 kernel/task_work.c:239 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0xa2f/0x28e0 kernel/exit.c:939 do_group_exit+0x207/0x2c0 kernel/exit.c:1088 __do_sys_exit_group kernel/exit.c:1099 [inline] __se_sys_exit_group kernel/exit.c:1097 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1097 x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe7b944e939 RSP: 002b:00007ffd2b477288 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fe7b944e939 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 00007fe7b94cf390 R08: ffffffffffffffb8 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000246 R12: 00007fe7b94cf390 R13: 0000000000000000 R14: 00007fe7b94d0100 R15: 00007fe7b941c830 INFO: task syz-executor186:5869 blocked for more than 147 seconds. Not tainted 6.12.0-rc6-syzkaller-00077-g2e1b3cc9d7f7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor186 state:D stack:23584 pid:5869 tgid:5869 ppid:5863 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0x184f/0x4c30 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6782 schedule_timeout+0xb0/0x310 kernel/time/timer.c:2591 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x355/0x620 kernel/sched/completion.c:148 __flush_work+0xa37/0xc50 kernel/workqueue.c:4217 flush_work kernel/workqueue.c:4238 [inline] flush_delayed_work+0x169/0x1c0 kernel/workqueue.c:4260 invalidate_dquots fs/quota/dquot.c:577 [inline] dquot_disable+0x7a7/0x1cd0 fs/quota/dquot.c:2295 ocfs2_disable_quotas+0xf3/0x210 fs/ocfs2/super.c:963 ocfs2_dismount_volume+0x1ad/0x8f0 fs/ocfs2/super.c:1870 generic_shutdown_super+0x13b/0x2d0 fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc6/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373 task_work_run+0x251/0x310 kernel/task_work.c:239 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0xa2f/0x28e0 kernel/exit.c:939 do_group_exit+0x207/0x2c0 kernel/exit.c:1088 __do_sys_exit_group kernel/exit.c:1099 [inline] __se_sys_exit_group kernel/exit.c:1097 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1097 x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe7b944e939 RSP: 002b:00007ffd2b477288 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fe7b944e939 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 00007fe7b94cf390 R08: ffffffffffffffb8 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000246 R12: 00007fe7b94cf390 R13: 0000000000000000 R14: 00007fe7b94d0100 R15: 00007fe7b941c830 INFO: task syz-executor186:5870 blocked for more than 149 seconds. Not tainted 6.12.0-rc6-syzkaller-00077-g2e1b3cc9d7f7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor186 state:D stack:23192 pid:5870 tgid:5870 ppid:5864 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0x184f/0x4c30 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6782 schedule_timeout+0xb0/0x310 kernel/time/timer.c:2591 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x355/0x620 kernel/sched/completion.c:148 __flush_work+0xa37/0xc50 kernel/workqueue.c:4217 flush_work kernel/workqueue.c:4238 [inline] flush_delayed_work+0x169/0x1c0 kernel/workqueue.c:4260 invalidate_dquots fs/quota/dquot.c:577 [inline] dquot_disable+0x7a7/0x1cd0 fs/quota/dquot.c:2295 ocfs2_disable_quotas+0x1bc/0x210 fs/ocfs2/super.c:963 ocfs2_dismount_volume+0x1ad/0x8f0 fs/ocfs2/super.c:1870 generic_shutdown_super+0x13b/0x2d0 fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc6/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373 task_work_run+0x251/0x310 kernel/task_work.c:239 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0xa2f/0x28e0 kernel/exit.c:939 do_group_exit+0x207/0x2c0 kernel/exit.c:1088 __do_sys_exit_group kernel/exit.c:1099 [inline] __se_sys_exit_group kernel/exit.c:1097 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1097 x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe7b944e939 RSP: 002b:00007ffd2b477288 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fe7b944e939 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 00007fe7b94cf390 R08: ffffffffffffffb8 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000246 R12: 00007fe7b94cf390 R13: 0000000000000000 R14: 00007fe7b94d0100 R15: 00007fe7b941c830 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6720 5 locks held by kworker/u8:2/33: #0: ffff8880b863ea98 (&rq->__lock){-.-.}-{2:2} , at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598 #1: ffff8880b8628948 (&per_cpu_ptr(group->pcpu, cpu)->seq ){-.-.}-{0:0} , at: psi_task_switch+0x41d/0x7a0 kernel/sched/psi.c:987 #2: ffff8880b862a718 (&base->lock ){-.-.}-{2:2} , at: lock_timer_base+0x112/0x240 kernel/time/timer.c:1051 #3: ffffffff8e9eda48 (jump_label_mutex){+.+.}-{3:3} , at: jump_label_lock kernel/jump_label.c:27 [inline] , at: static_key_enable_cpuslocked+0xd7/0x260 kernel/jump_label.c:207 #4: ffffffff8e7e6f48 ( text_mutex ){+.+.}-{3:3} , at: arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:145 10 locks held by kworker/u8:7/1125: 2 locks held by getty/5598: #0: ffff8880351d20a0 ( &tty->ldisc_sem ){++++}-{0:0} , at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc90002f062f0 ( &ldata->atomic_read_lock ){+.+.}-{3:3} , at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211 1 lock held by syz-executor186/5865: #0: ffff888033d4c0e0 (&type->s_umount_key #47){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #47){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #47){+.+.}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 1 lock held by syz-executor186/5866: #0: ffff88807d8ca0e0 (&type->s_umount_key#47){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] (&type->s_umount_key#47){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] (&type->s_umount_key#47){+.+.}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 1 lock held by syz-executor186/5867: #0: ffff8880781be0e0 (&type->s_umount_key#47){+.+.}-{3:3} , at: __super_lock fs/super.c:56 [inline] , at: __super_lock_excl fs/super.c:71 [inline] , at: deactivate_super+0xb5/0xf0 fs/super.c:505 1 lock held by syz-executor186/5868: #0: ffff88807df000e0 (&type->s_umount_key#47){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] (&type->s_umount_key#47){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] (&type->s_umount_key#47){+.+.}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 1 lock held by syz-executor186/5869: #0: ffff8880775e20e0 (&type->s_umount_key#47){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff8880775e20e0 (&type->s_umount_key#47){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff8880775e20e0 (&type->s_umount_key#47){+.+.}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 1 lock held by syz-executor186/5870: #0: ffff888031f9a0e0 (&type->s_umount_key#47){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff888031f9a0e0 (&type->s_umount_key#47){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff888031f9a0e0 (&type->s_umount_key#47){+.+.}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 ============================================= NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc6-syzkaller-00077-g2e1b3cc9d7f7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline] watchdog+0xff4/0x1040 kernel/hung_task.c:379 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 1125 Comm: kworker/u8:7 Not tainted 6.12.0-rc6-syzkaller-00077-g2e1b3cc9d7f7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events_unbound quota_release_workfn RIP: 0010:trace_hardirqs_on+0x0/0x40 kernel/trace/trace_preemptirq.c:54 Code: ff ff 90 0f 0b 90 e9 77 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 65 8b 05 6d b8 66 7e 85 c0 74 14 48 8b 3c 24 e8 b8 fe RSP: 0018:ffffc90000a18ca8 EFLAGS: 00000086 RAX: 0000000000000001 RBX: ffff8880b872a700 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880b872a700 RBP: ffffc90000a18e10 R08: ffff8880b872a703 R09: 1ffff110170e54e0 R10: dffffc0000000000 R11: ffffed10170e54e1 R12: ffff8880b872a748 R13: ffffc90000a18d60 R14: dffffc0000000000 R15: 00000000fffffd10 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d3cad44600 CR3: 0000000034136000 CR4: 0000000000350ef0 Call Trace: __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] _raw_spin_unlock_irq+0x23/0x50 kernel/locking/spinlock.c:202 __run_timer_base+0x1c0/0x8e0 kernel/time/timer.c:2431 run_timer_base kernel/time/timer.c:2439 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449 handle_softirqs+0x2c7/0x980 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2042 [inline] RIP: 0010:vprintk_emit+0x700/0xa10 kernel/printk/printk.c:2406 Code: 00 e8 f4 c2 20 00 4c 8d bc 24 a0 00 00 00 4d 85 e4 75 07 e8 e2 c2 20 00 eb 06 e8 db c2 20 00 fb 49 bc 00 00 00 00 00 fc ff df <48> c7 c7 80 33 81 8e 31 f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 RSP: 0018:ffffc90004897600 EFLAGS: 00000293 RAX: ffffffff81741785 RBX: 0000000000000000 RCX: ffff8880275c5a00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90004897710 R08: ffffffff8174175e R09: 1ffffffff2859b1a R10: dffffc0000000000 R11: fffffbfff2859b1b R12: dffffc0000000000 R13: 1ffff92000912ec4 R14: ffffffff817415c0 R15: ffffc900048976a0 _printk+0xd5/0x120 kernel/printk/printk.c:2432 __mlog_printk+0x281/0x2b0 fs/ocfs2/cluster/masklog.c:77 ocfs2_release_dquot+0x8a2/0xc40 fs/ocfs2/quota_global.c:765 quota_release_workfn+0x3a1/0x650 fs/quota/dquot.c:839 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 3.031 msecs --- 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