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Message-Id: <20110903105045.7d195883.akpm@linux-foundation.org> Date: Sat, 3 Sep 2011 10:50:45 -0700 From: Andrew Morton <akpm@...ux-foundation.org> To: Dave Young <hidave.darkstar@...il.com> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Fengguang Wu <wfg@...l.ustc.edu.cn>, linux-usb@...r.kernel.org Subject: Re: [BUG] D state process after unplug and umount usb disk (cc linux-usb) On Sat, 3 Sep 2011 18:31:11 +0800 Dave Young <hidave.darkstar@...il.com> wrote: > Hi, > > Known issue? Not as far as I know. Kernel version? > Reproduce by: > mount /dev/sdb2 /mnt/sdb2 -t ext3 > cat /mnt/sdb2/* >/dev/null > unplug usb disk > umount -f /mnt/sdb2 > > dmesg as below: > > [ 1440.567271] SysRq : Show Blocked State > [ 1440.567278] task PC stack pid father > [ 1440.567312] cat D ffff880037a1e378 4296 2381 2310 0x00000004 > [ 1440.567320] ffff88003cca5838 0000000000000046 ffff88003cca57e8 > ffffffff00000000 > [ 1440.567332] 00000000000134c0 00000000000134c0 00000000000134c0 > ffff880037a1e000 > [ 1440.567339] 00000000000134c0 ffff88003cca5fd8 00000000000134c0 > 00000000000134c0 > [ 1440.567347] Call Trace: > [ 1440.567357] [<ffffffff810c0468>] ? lock_page+0x2a/0x2a > [ 1440.567363] [<ffffffff815e452d>] io_schedule+0x5e/0x79 > [ 1440.567368] [<ffffffff810c0471>] sleep_on_page+0x9/0xd > [ 1440.567373] [<ffffffff815e4adf>] __wait_on_bit_lock+0x41/0x8a > [ 1440.567378] [<ffffffff810c0437>] __lock_page+0x61/0x68 > [ 1440.567384] [<ffffffff81058739>] ? autoremove_wake_function+0x34/0x34 > [ 1440.567390] [<ffffffff8102f704>] ? should_resched+0x9/0x29 > [ 1440.567395] [<ffffffff810c9b0b>] lock_page+0x25/0x29 > [ 1440.567400] [<ffffffff810ca1ac>] truncate_inode_pages_range+0x2a6/0x32d > [ 1440.567406] [<ffffffff810ca240>] truncate_inode_pages+0xd/0xf > [ 1440.567411] [<ffffffff811642cf>] ext3_evict_inode+0xc9/0x1d7 > [ 1440.567417] [<ffffffff8111288e>] evict+0xa3/0x15e > [ 1440.567422] [<ffffffff81112b34>] dispose_list+0x3d/0x49 > [ 1440.567426] [<ffffffff81113475>] evict_inodes+0xf1/0x100 > [ 1440.567431] [<ffffffff810ffd21>] generic_shutdown_super+0x47/0xc7 > [ 1440.567436] [<ffffffff810ffdc3>] kill_block_super+0x22/0x65 > [ 1440.567441] [<ffffffff811000da>] deactivate_locked_super+0x21/0x52 > [ 1440.567445] [<ffffffff811009ab>] deactivate_super+0x35/0x39 > [ 1440.567452] [<ffffffff81116395>] mntput_no_expire+0xcb/0xd0 > [ 1440.567457] [<ffffffff811163bb>] mntput+0x21/0x23 > [ 1440.567461] [<ffffffff810ff8e7>] fput+0x196/0x1a5 > [ 1440.567467] [<ffffffff810fc7a1>] filp_close+0x6b/0x76 > [ 1440.567472] [<ffffffff8103fa8a>] put_files_struct+0x73/0xd1 > [ 1440.567477] [<ffffffff8103fb7b>] exit_files+0x46/0x4f > [ 1440.567481] [<ffffffff8103fe01>] do_exit+0x27d/0x7b3 > [ 1440.567487] [<ffffffff8104d97f>] ? get_signal_to_deliver+0x81/0x4ac > [ 1440.567493] [<ffffffff812e5e27>] ? do_raw_spin_lock+0x6b/0x122 > [ 1440.567497] [<ffffffff810405c5>] do_group_exit+0x7d/0xa8 > [ 1440.567502] [<ffffffff8104dd8b>] get_signal_to_deliver+0x48d/0x4ac > [ 1440.567509] [<ffffffff81001ea2>] do_signal+0x39/0x600 > [ 1440.567514] [<ffffffff810fdb37>] ? fsnotify_access+0x5d/0x65 > [ 1440.567519] [<ffffffff810024a4>] do_notify_resume+0x27/0x69 > [ 1440.567524] [<ffffffff812e158e>] ? trace_hardirqs_on_thunk+0x3a/0x3f > [ 1440.567529] [<ffffffff815ecd63>] int_signal+0x12/0x17 > [ 1440.710163] INFO: task cat:2381 blocked for more than 120 seconds. > [ 1440.710170] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" > disables this message. > [ 1440.710175] cat D ffff880037a1e378 4296 2381 2310 0x00000004 > [ 1440.710188] ffff88003cca5838 0000000000000046 ffff88003cca57e8 > ffffffff00000000 > [ 1440.710201] 00000000000134c0 00000000000134c0 00000000000134c0 > ffff880037a1e000 > [ 1440.710218] 00000000000134c0 ffff88003cca5fd8 00000000000134c0 > 00000000000134c0 > [ 1440.710225] Call Trace: > [ 1440.710233] [<ffffffff810c0468>] ? lock_page+0x2a/0x2a > [ 1440.710239] [<ffffffff815e452d>] io_schedule+0x5e/0x79 > [ 1440.710244] [<ffffffff810c0471>] sleep_on_page+0x9/0xd > [ 1440.710249] [<ffffffff815e4adf>] __wait_on_bit_lock+0x41/0x8a > [ 1440.710253] [<ffffffff810c0437>] __lock_page+0x61/0x68 > [ 1440.710259] [<ffffffff81058739>] ? autoremove_wake_function+0x34/0x34 > [ 1440.710264] [<ffffffff8102f704>] ? should_resched+0x9/0x29 > [ 1440.710269] [<ffffffff810c9b0b>] lock_page+0x25/0x29 > [ 1440.710274] [<ffffffff810ca1ac>] truncate_inode_pages_range+0x2a6/0x32d > [ 1440.710279] [<ffffffff810ca240>] truncate_inode_pages+0xd/0xf > [ 1440.710284] [<ffffffff811642cf>] ext3_evict_inode+0xc9/0x1d7 > [ 1440.710289] [<ffffffff8111288e>] evict+0xa3/0x15e > [ 1440.710294] [<ffffffff81112b34>] dispose_list+0x3d/0x49 > [ 1440.710299] [<ffffffff81113475>] evict_inodes+0xf1/0x100 > [ 1440.710303] [<ffffffff810ffd21>] generic_shutdown_super+0x47/0xc7 > [ 1440.710308] [<ffffffff810ffdc3>] kill_block_super+0x22/0x65 > [ 1440.710312] [<ffffffff811000da>] deactivate_locked_super+0x21/0x52 > [ 1440.710316] [<ffffffff811009ab>] deactivate_super+0x35/0x39 > [ 1440.710322] [<ffffffff81116395>] mntput_no_expire+0xcb/0xd0 > [ 1440.710326] [<ffffffff811163bb>] mntput+0x21/0x23 > [ 1440.710330] [<ffffffff810ff8e7>] fput+0x196/0x1a5 > [ 1440.710335] [<ffffffff810fc7a1>] filp_close+0x6b/0x76 > [ 1440.710342] [<ffffffff8103fa8a>] put_files_struct+0x73/0xd1 > [ 1440.710346] [<ffffffff8103fb7b>] exit_files+0x46/0x4f > [ 1440.710350] [<ffffffff8103fe01>] do_exit+0x27d/0x7b3 > [ 1440.710356] [<ffffffff8104d97f>] ? get_signal_to_deliver+0x81/0x4ac > [ 1440.710361] [<ffffffff812e5e27>] ? do_raw_spin_lock+0x6b/0x122 > [ 1440.710366] [<ffffffff810405c5>] do_group_exit+0x7d/0xa8 > [ 1440.710371] [<ffffffff8104dd8b>] get_signal_to_deliver+0x48d/0x4ac > [ 1440.710376] [<ffffffff81001ea2>] do_signal+0x39/0x600 > [ 1440.710381] [<ffffffff810fdb37>] ? fsnotify_access+0x5d/0x65 > [ 1440.710386] [<ffffffff810024a4>] do_notify_resume+0x27/0x69 > [ 1440.710391] [<ffffffff812e158e>] ? trace_hardirqs_on_thunk+0x3a/0x3f > [ 1440.710396] [<ffffffff815ecd63>] int_signal+0x12/0x17 > [ 1440.710399] INFO: lockdep is turned off. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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