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Message-ID: <20150625092940.08c3fb4b@noble> Date: Thu, 25 Jun 2015 09:29:40 +1000 From: NeilBrown <neilb@...e.com> To: Tomasz Chmielewski <tch@...tall.com> Cc: linux-kernel@...r.kernel.org, linux-raid@...r.kernel.org Subject: Re: 4.0.5: WARNING: CPU: 3 PID: 249 at /home/kernel/COD/linux/mm/backing-dev.c:372 bdi_unregister+0x36/0x40() On Mon, 15 Jun 2015 21:39:03 +0900 Tomasz Chmielewski <tch@...tall.com> wrote: > Got this after stopping a RAID-1 array: > > [ 626.694737] md: md3 still in use. > [ 626.694946] md: delaying resync of md3 until md2 has finished (they > share one or more physical units) > [ 628.256210] md3: detected capacity change from 3888444473344 to 0 > [ 628.256372] md: md3 stopped. > [ 628.256383] md: unbind<sdb4> > [ 628.274852] md: export_rdev(sdb4) > [ 628.274909] md: unbind<sda4> > [ 628.282856] md: export_rdev(sda4) > [ 628.283246] ------------[ cut here ]------------ > [ 628.283258] WARNING: CPU: 3 PID: 249 at > /home/kernel/COD/linux/mm/backing-dev.c:372 bdi_unregister+0x36/0x40() Fixed in 4.0.6. NeilBrown > [ 628.283261] Modules linked in: intel_rapl iosf_mbi > x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm > crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 > lrw gf128mul glue_helper ablk_helper eeepc_wmi asus_wmi ppdev > sparse_keymap parport_pc cryptd video shpchp 8250_fintek lpc_ich lp > tpm_infineon wmi mac_hid parport serio_raw btrfs pata_acpi raid10 > raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor > raid6_pq raid1 ahci r8169 libahci raid0 mii pata_via multipath linear > [ 628.283320] CPU: 3 PID: 249 Comm: kworker/3:1 Not tainted > 4.0.5-040005-generic #201506061639 > [ 628.283322] Hardware name: System manufacturer System Product > Name/P8H67-M PRO, BIOS 3904 04/27/2013 > [ 628.283328] Workqueue: md_misc mddev_delayed_delete > [ 628.283341] 0000000000000174 ffff88040867bca8 ffffffff817e4a5d > 0000000000000007 > [ 628.283347] 0000000000000000 ffff88040867bce8 ffffffff81079227 > ffffffff81adc895 > [ 628.283352] ffff880409197c00 0000000000000000 0000000000000000 > ffff88041f2da900 > [ 628.283365] Call Trace: > [ 628.283374] [<ffffffff817e4a5d>] dump_stack+0x45/0x57 > [ 628.283381] [<ffffffff81079227>] warn_slowpath_common+0x97/0xe0 > [ 628.283386] [<ffffffff8107928a>] warn_slowpath_null+0x1a/0x20 > [ 628.283390] [<ffffffff811a3f16>] bdi_unregister+0x36/0x40 > [ 628.283397] [<ffffffff813955f8>] del_gendisk+0x108/0x260 > [ 628.283402] [<ffffffff81648eec>] md_free+0x4c/0x70 > [ 628.283408] [<ffffffff813b6b62>] kobject_cleanup+0x82/0x1c0 > [ 628.283413] [<ffffffff813b69f0>] kobject_put+0x30/0x70 > [ 628.283417] [<ffffffff81649c44>] mddev_delayed_delete+0x34/0x40 > [ 628.283422] [<ffffffff81092204>] process_one_work+0x144/0x490 > [ 628.283426] [<ffffffff81092c6e>] worker_thread+0x11e/0x450 > [ 628.283431] [<ffffffff81092b50>] ? create_worker+0x1f0/0x1f0 > [ 628.283436] [<ffffffff81098999>] kthread+0xc9/0xe0 > [ 628.283442] [<ffffffff810988d0>] ? flush_kthread_worker+0x90/0x90 > [ 628.283448] [<ffffffff817f1118>] ret_from_fork+0x58/0x90 > [ 628.283453] [<ffffffff810988d0>] ? flush_kthread_worker+0x90/0x90 > [ 628.283457] ---[ end trace 2c187f15cc11aca4 ]--- > > > -- 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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