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[139.178.88.99]) by mx.google.com with ESMTPS id 68-20020a17090a09ca00b0028e71a3daaasi812941pjo.73.2024.01.31.01.28.33 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 31 Jan 2024 01:28:33 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-46124-linux.lists.archive=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) client-ip=139.178.88.99; Authentication-Results: mx.google.com; arc=pass (i=1 spf=pass spfdomain=m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com); spf=pass (google.com: domain of linux-kernel+bounces-46124-linux.lists.archive=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) smtp.mailfrom="linux-kernel+bounces-46124-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id D094A295BAE for ; Wed, 31 Jan 2024 09:19:42 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id CED9469D10; Wed, 31 Jan 2024 09:18:08 +0000 (UTC) Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) (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 BEDA869D09 for ; Wed, 31 Jan 2024 09:18:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706692687; cv=none; b=J4U1j0HW3G8EbKa/Wqt7JmJvgI/y9qF9k4aXePsvCxfNkw8vg+WNkS1cb4hAmDdLS8A/bHtRFaEWzsKGER5nOWGSHZR/uX+zuPIRdsp5YZpYUPsZJhqXmO4N/y/ME53yTJtGMXpsH/nlS+p//eYDRD0sll++xvF6BRclaM1ZIy4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706692687; c=relaxed/simple; bh=JlRIUUaFiSTz2KMD2p3Gzm0qVfI+zBn88cFNi0c4+zE=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=KJCwHYnHzBQV17OWynSa4pT605Gv8k49t965LGtL48aNPrjugi/UDNSP/wBJYD9S5482gKJkDLjE27cn7t2QqfhK3Iuqj9l+B7ET1RVXHjVspcAObmfbsOsEnm7bsKrwJW0OpG7hBcfggUFHEpNxtLryYats2831BnAA+NQqaG4= 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=209.85.166.198 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-il1-f198.google.com with SMTP id e9e14a558f8ab-363930ba977so10939465ab.0 for ; Wed, 31 Jan 2024 01:18:04 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1706692684; x=1707297484; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Sq0H4o4P1WbOL5vGEXPpe6xpAZKT6MdAwE5/Gsu5Eq4=; b=U0jy+HHUjF4oRCHme3L8lY/nqpcIdAUGY/tWzKH9hSqamDCAShcKLF/8r92FtJiIMv XvuZ3kf8ptS3a93p7MdhYe20+AkeMkw7Bgj8TgUCvuEGCOK5U+/uU2lPMPmTAStCVHVN 2K4XaJjEmjJ3OmYSWL50767BWQLtp9o0F4vKMY/ruhHKwSbRICTtUAk0PDxi+pIGST3U a+1020v0aATeRnSFLzHfLGpvTgzohz3mPD25nRY+kBi8X8K4e/BZmuQ1GSCyikIASwDO dUvZfmFbuY1LGeeEUx7bMGdUyMwjlYeJyHK1W/rmbJkuwEViStFwz5omahAVTumSP1ko ezqQ== X-Gm-Message-State: AOJu0Yzcq6+Oc2OTh4Y/sCtvl2k4qZ2eScA0AUA8amCUhcSztFwTj/In X9fi2ZdqbikzFTvgcX8EED72TwRnox/SxS0K/+MGRNzIMwCAcprKDMrW9QpPhQHTwFAfD7WevZx C/j3BwIQO0DcWn5jf2Q4yzrLewIrIKWwOJRluyikOSwdwEo6qn/XXT7U= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:154f:b0:35f:c187:ea04 with SMTP id j15-20020a056e02154f00b0035fc187ea04mr114272ilu.3.1706692683972; Wed, 31 Jan 2024 01:18:03 -0800 (PST) Date: Wed, 31 Jan 2024 01:18:03 -0800 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002b4ac906103a5bba@google.com> Subject: Re: [syzbot] [block?] [trace?] INFO: task hung in blk_trace_remove (2) From: syzbot To: eadavis@qq.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: INFO: task hung in blk_trace_setup INFO: task syz-executor.4:5637 blocked for more than 143 seconds. Not tainted 6.8.0-rc2-syzkaller-g1bbb19b6eb1b-dirty #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:27776 pid:5637 tgid:5635 ppid:5428 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5400 [inline] __schedule+0xf12/0x5c00 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6817 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:752 blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 sg_ioctl_common drivers/scsi/sg.c:1118 [inline] sg_ioctl+0x669/0x2760 drivers/scsi/sg.c:1160 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f92fce7cda9 RSP: 002b:00007f92fdcc30c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f92fcfabf80 RCX: 00007f92fce7cda9 RDX: 0000000020000040 RSI: 00000000c0481273 RDI: 0000000000000003 RBP: 00007f92fcec947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f92fcfabf80 R15: 00007ffd5e0ef4b8 INFO: task syz-executor.4:5639 blocked for more than 144 seconds. Not tainted 6.8.0-rc2-syzkaller-g1bbb19b6eb1b-dirty #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:28480 pid:5639 tgid:5635 ppid:5428 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5400 [inline] __schedule+0xf12/0x5c00 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6817 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:752 blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 sg_ioctl_common drivers/scsi/sg.c:1126 [inline] sg_ioctl+0x9ac/0x2760 drivers/scsi/sg.c:1160 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f92fce7cda9 RSP: 002b:00007f92fdca20c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f92fcfac050 RCX: 00007f92fce7cda9 RDX: 0000000000000000 RSI: 0000000000001276 RDI: 0000000000000003 RBP: 00007f92fcec947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f92fcfac050 R15: 00007ffd5e0ef4b8 INFO: task syz-executor.2:5650 blocked for more than 145 seconds. Not tainted 6.8.0-rc2-syzkaller-g1bbb19b6eb1b-dirty #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:27776 pid:5650 tgid:5649 ppid:5430 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5400 [inline] __schedule+0xf12/0x5c00 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6817 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:752 blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 sg_ioctl_common drivers/scsi/sg.c:1118 [inline] sg_ioctl+0x669/0x2760 drivers/scsi/sg.c:1160 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f63a947cda9 RSP: 002b:00007f63aa2680c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f63a95abf80 RCX: 00007f63a947cda9 RDX: 0000000020000040 RSI: 00000000c0481273 RDI: 0000000000000003 RBP: 00007f63a94c947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f63a95abf80 R15: 00007ffeba8b3558 INFO: task syz-executor.2:5651 blocked for more than 145 seconds. Not tainted 6.8.0-rc2-syzkaller-g1bbb19b6eb1b-dirty #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:29536 pid:5651 tgid:5649 ppid:5430 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5400 [inline] __schedule+0xf12/0x5c00 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6817 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:752 blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 sg_ioctl_common drivers/scsi/sg.c:1126 [inline] sg_ioctl+0x9ac/0x2760 drivers/scsi/sg.c:1160 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f63a947cda9 RSP: 002b:00007f63aa2470c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f63a95ac050 RCX: 00007f63a947cda9 RDX: 0000000000000000 RSI: 0000000000001276 RDI: 0000000000000003 RBP: 00007f63a94c947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f63a95ac050 R15: 00007ffeba8b3558 INFO: task syz-executor.0:5660 blocked for more than 146 seconds. Not tainted 6.8.0-rc2-syzkaller-g1bbb19b6eb1b-dirty #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:27776 pid:5660 tgid:5658 ppid:5431 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5400 [inline] __schedule+0xf12/0x5c00 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6817 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:752 blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 sg_ioctl_common drivers/scsi/sg.c:1118 [inline] sg_ioctl+0x669/0x2760 drivers/scsi/sg.c:1160 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f574aa7cda9 RSP: 002b:00007f574b8b00c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f574ababf80 RCX: 00007f574aa7cda9 RDX: 0000000020000040 RSI: 00000000c0481273 RDI: 0000000000000003 RBP: 00007f574aac947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f574ababf80 R15: 00007ffd7a97ed28 INFO: task syz-executor.0:5661 blocked for more than 147 seconds. Not tainted 6.8.0-rc2-syzkaller-g1bbb19b6eb1b-dirty #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:29536 pid:5661 tgid:5658 ppid:5431 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5400 [inline] __schedule+0xf12/0x5c00 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6817 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:752 blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 sg_ioctl_common drivers/scsi/sg.c:1126 [inline] sg_ioctl+0x9ac/0x2760 drivers/scsi/sg.c:1160 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f574aa7cda9 RSP: 002b:00007f574b88f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f574abac050 RCX: 00007f574aa7cda9 RDX: 0000000000000000 RSI: 0000000000001276 RDI: 0000000000000003 RBP: 00007f574aac947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f574abac050 R15: 00007ffd7a97ed28 INFO: task syz-executor.5:5666 blocked for more than 147 seconds. Not tainted 6.8.0-rc2-syzkaller-g1bbb19b6eb1b-dirty #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:27776 pid:5666 tgid:5664 ppid:5427 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5400 [inline] __schedule+0xf12/0x5c00 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6817 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:752 blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 sg_ioctl_common drivers/scsi/sg.c:1118 [inline] sg_ioctl+0x669/0x2760 drivers/scsi/sg.c:1160 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f6b7be7cda9 RSP: 002b:00007f6b7cbf80c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f6b7bfabf80 RCX: 00007f6b7be7cda9 RDX: 0000000020000040 RSI: 00000000c0481273 RDI: 0000000000000003 RBP: 00007f6b7bec947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f6b7bfabf80 R15: 00007ffc5bbb9978 INFO: task syz-executor.5:5668 blocked for more than 148 seconds. Not tainted 6.8.0-rc2-syzkaller-g1bbb19b6eb1b-dirty #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:29536 pid:5668 tgid:5664 ppid:5427 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5400 [inline] __schedule+0xf12/0x5c00 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6817 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:752 blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 sg_ioctl_common drivers/scsi/sg.c:1126 [inline] sg_ioctl+0x9ac/0x2760 drivers/scsi/sg.c:1160 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f6b7be7cda9 RSP: 002b:00007f6b7cbd70c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f6b7bfac050 RCX: 00007f6b7be7cda9 RDX: 0000000000000000 RSI: 0000000000001276 RDI: 0000000000000003 RBP: 00007f6b7bec947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f6b7bfac050 R15: 00007ffc5bbb9978 Showing all locks held in the system: 3 locks held by kworker/0:0/8: #0: ffff88802887ad38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608 #1: ffffc900000d7d80 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609 #2: ffffffff8ecc25a8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xcf/0x14b0 net/ipv6/addrconf.c:4129 3 locks held by kworker/u4:1/12: 1 lock held by khungtaskd/29: #0: ffffffff8d1acbe0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline] #0: ffffffff8d1acbe0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline] #0: ffffffff8d1acbe0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614 2 locks held by kworker/0:2/781: #0: ffff88801308a938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608 #1: ffffc90003e9fd80 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609 2 locks held by getty/4820: #0: ffff88802911a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc6/0x1490 drivers/tty/n_tty.c:2201 5 locks held by kworker/u5:2/5064: #0: ffff88807df2ed38 ((wq_completion)hci7){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608 #1: ffffc90003ccfd80 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609 #2: ffff8881ef9d5060 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x170/0x410 net/bluetooth/hci_sync.c:305 #3: ffff8881ef9d4078 (&hdev->lock){+.+.}-{3:3}, at: hci_abort_conn_sync+0x150/0xb50 net/bluetooth/hci_sync.c:5337 #4: ffffffff8ef238c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1983 [inline] #4: ffffffff8ef238c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_failed+0x158/0x370 net/bluetooth/hci_conn.c:1289 3 locks held by kworker/1:5/5076: #0: ffff88802887ad38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608 #1: ffffc90003d5fd80 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609 #2: ffffffff8ecc25a8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xcf/0x14b0 net/ipv6/addrconf.c:4129 2 locks held by kworker/0:4/5077: 5 locks held by kworker/u5:4/5435: #0: ffff888020c70d38 ((wq_completion)hci6){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608 #1: ffffc900049a7d80 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609 #2: ffff8881ed859060 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x170/0x410 net/bluetooth/hci_sync.c:305 #3: ffff8881ed858078 (&hdev->lock){+.+.}-{3:3}, at: hci_abort_conn_sync+0x150/0xb50 net/bluetooth/hci_sync.c:5337 #4: ffffffff8ef238c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1983 [inline] #4: ffffffff8ef238c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_failed+0x158/0x370 net/bluetooth/hci_conn.c:1289 5 locks held by kworker/u5:7/5441: #0: ffff88807fa3cd38 ((wq_completion)hci9){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608 #1: ffffc90004a87d80 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609 #2: ffff8881f4771060 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x170/0x410 net/bluetooth/hci_sync.c:305 #3: ffff8881f4770078 (&hdev->lock){+.+.}-{3:3}, at: hci_abort_conn_sync+0x150/0xb50 net/bluetooth/hci_sync.c:5337 #4: ffffffff8d1b8438 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline] #4: ffffffff8d1b8438 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3ff/0x800 kernel/rcu/tree_exp.h:995 1 lock held by syz-executor.3/5626: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_cleanup kernel/trace/blktrace.c:406 [inline] #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: __blk_trace_remove+0x109/0x250 kernel/trace/blktrace.c:418 3 locks held by syz-executor.1/5633: 1 lock held by syz-executor.4/5637: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 1 lock held by syz-executor.4/5639: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 1 lock held by syz-executor.2/5650: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 1 lock held by syz-executor.2/5651: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 1 lock held by syz-executor.0/5660: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 1 lock held by syz-executor.0/5661: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 1 lock held by syz-executor.5/5666: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 1 lock held by syz-executor.5/5668: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 1 lock held by syz-executor.3/5969: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 1 lock held by syz-executor.3/5970: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 1 lock held by syz-executor.1/5973: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 1 lock held by syz-executor.1/5975: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 1 lock held by syz-executor.4/5986: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 1 lock held by syz-executor.4/5988: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 1 lock held by syz-executor.0/5998: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 1 lock held by syz-executor.0/5999: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 1 lock held by syz-executor.2/6001: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 1 lock held by syz-executor.2/6002: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 1 lock held by syz-executor.5/6004: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 1 lock held by syz-executor.5/6005: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 1 lock held by syz-executor.3/6075: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 1 lock held by syz-executor.3/6076: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 1 lock held by syz-executor.1/6099: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 1 lock held by syz-executor.1/6100: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 1 lock held by syz-executor.0/6115: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 1 lock held by syz-executor.0/6116: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 1 lock held by syz-executor.4/6119: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 1 lock held by syz-executor.4/6120: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 1 lock held by syz-executor.2/6122: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 1 lock held by syz-executor.2/6123: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 1 lock held by syz-executor.5/6125: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_setup+0x33/0x60 kernel/trace/blktrace.c:669 1 lock held by syz-executor.5/6126: #0: ffff88801f2e3b40 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:427 3 locks held by syz-executor.3/6128: #0: ffffffff8ecc25a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8ecc25a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe00 net/core/rtnetlink.c:6612 #1: ffff88802ac793e8 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_open+0x203/0x4e0 drivers/net/wireguard/device.c:50 #2: ffffffff8d1b8438 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline] #2: ffffffff8d1b8438 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3ff/0x800 kernel/rcu/tree_exp.h:995 7 locks held by syz-executor.1/6139: #0: ffff888028d7c420 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12f/0x250 fs/read_write.c:643 #1: ffff888036f8e088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x27d/0x500 fs/kernfs/file.c:325 #2: ffff88802169b6d0 (kn->active#50){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a0/0x500 fs/kernfs/file.c:326 #3: ffffffff8e356208 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd2/0x4b0 drivers/net/netdevsim/bus.c:216 #4: ffff88806895e0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #4: ffff88806895e0e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline] #4: ffff88806895e0e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292 #5: ffff888068958250 (&devlink->lock_key#15){+.+.}-{3:3}, at: nsim_drv_remove+0x4a/0x1d0 drivers/net/netdevsim/dev.c:1672 #6: ffffffff8ecc25a8 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x39/0x1c0 drivers/net/netdevsim/netdev.c:417 2 locks held by syz-executor.0/6152: #0: ffffffff8ecacf50 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2cc/0x660 net/core/net_namespace.c:491 #1: ffffffff8ecc25a8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10391 2 locks held by syz-executor.4/6158: #0: ffffffff8ecacf50 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2cc/0x660 net/core/net_namespace.c:491 #1: ffffffff8ecc25a8 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_init_net+0x225/0x5e0 net/ipv4/ip_tunnel.c:1090 2 locks held by syz-executor.2/6161: #0: ffffffff8ecacf50 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2cc/0x660 net/core/net_namespace.c:491 #1: ffffffff8ecc25a8 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_init_net+0x225/0x5e0 net/ipv4/ip_tunnel.c:1090 2 locks held by syz-executor.5/6164: #0: ffffffff8ecacf50 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2cc/0x660 net/core/net_namespace.c:491 #1: ffffffff8ecc25a8 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_init_net+0x225/0x5e0 net/ipv4/ip_tunnel.c:1090 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc2-syzkaller-g1bbb19b6eb1b-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x277/0x390 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x299/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xf87/0x1210 kernel/hung_task.c:379 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5490 Comm: kworker/0:5 Not tainted 6.8.0-rc2-syzkaller-g1bbb19b6eb1b-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Workqueue: events nsim_dev_trap_report_work RIP: 0010:stack_access_ok+0x2/0x270 arch/x86/kernel/unwind_orc.c:389 Code: 89 85 30 ff ff ff e8 cd b9 a5 00 48 8b 95 18 ff ff ff 48 8b 8d 28 ff ff ff 44 8b 85 30 ff ff ff e9 6f fe ff ff 0f 1f 00 41 57 <41> 56 41 55 41 54 55 48 89 f5 53 48 89 fb 4c 8d 63 08 48 83 ec 10 RSP: 0018:ffffc90004e876f8 EFLAGS: 00000097 RAX: 0000000000000000 RBX: ffffc90004e87788 RCX: 0000000000000001 RDX: 0000000000000008 RSI: ffffc90004e87ac0 RDI: ffffc90004e87788 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000004 R10: 0000000000000001 R11: 0000000000000004 R12: ffffc90004e87ac0 R13: ffffc90004e87ad8 R14: 0000000000000001 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5266cd5000 CR3: 000000002147d000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: deref_stack_reg arch/x86/kernel/unwind_orc.c:403 [inline] unwind_next_frame+0x1a98/0x2390 arch/x86/kernel/unwind_orc.c:648 arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122 kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 __kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:586 insert_work+0x38/0x230 kernel/workqueue.c:1653 __queue_work+0x62e/0x11d0 kernel/workqueue.c:1802 __queue_delayed_work+0x1bf/0x270 kernel/workqueue.c:1953 queue_delayed_work_on+0x106/0x130 kernel/workqueue.c:1989 queue_delayed_work include/linux/workqueue.h:563 [inline] schedule_delayed_work include/linux/workqueue.h:677 [inline] nsim_dev_trap_report_work+0x9c0/0xc80 drivers/net/netdevsim/dev.c:842 process_one_work+0x886/0x15d0 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x8b9/0x1290 kernel/workqueue.c:2787 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Tested on: commit: 1bbb19b6 Merge tag 'erofs-for-6.8-rc3-fixes' of git://.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master console output: https://syzkaller.appspot.com/x/log.txt?x=1041cb97e80000 kernel config: https://syzkaller.appspot.com/x/.config?x=b168fa511db3ca08 dashboard link: https://syzkaller.appspot.com/bug?extid=2373f6be3e6de4f92562 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=10419e1fe80000