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Message-ID: <20160615231248.GI17127@bbox> Date: Thu, 16 Jun 2016 08:12:48 +0900 From: Minchan Kim <minchan@...nel.org> To: Sergey Senozhatsky <sergey.senozhatsky.work@...il.com> CC: Andrew Morton <akpm@...ux-foundation.org>, <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>, Vlastimil Babka <vbabka@...e.cz>, <dri-devel@...ts.freedesktop.org>, Hugh Dickins <hughd@...gle.com>, John Einar Reitan <john.reitan@...s.arm.com>, Jonathan Corbet <corbet@....net>, Joonsoo Kim <iamjoonsoo.kim@....com>, Konstantin Khlebnikov <koct9i@...il.com>, Mel Gorman <mgorman@...e.de>, Naoya Horiguchi <n-horiguchi@...jp.nec.com>, Rafael Aquini <aquini@...hat.com>, Rik van Riel <riel@...hat.com>, Sergey Senozhatsky <sergey.senozhatsky@...il.com>, <virtualization@...ts.linux-foundation.org>, Gioh Kim <gi-oh.kim@...fitbricks.com>, Chan Gyun Jeong <chan.jeong@....com>, Sangseok Lee <sangseok.lee@....com>, Kyeongdon Kim <kyeongdon.kim@....com>, Chulmin Kim <cmlaika.kim@...sung.com> Subject: Re: [PATCH v7 00/12] Support non-lru page migration Hi Sergey, On Wed, Jun 15, 2016 at 04:59:09PM +0900, Sergey Senozhatsky wrote: > Hello Minchan, > > -next 4.7.0-rc3-next-20160614 > > > [ 315.146533] kasan: CONFIG_KASAN_INLINE enabled > [ 315.146538] kasan: GPF could be caused by NULL-ptr deref or user memory access > [ 315.146546] general protection fault: 0000 [#1] PREEMPT SMP KASAN > [ 315.146576] Modules linked in: lzo zram zsmalloc mousedev coretemp hwmon crc32c_intel r8169 i2c_i801 mii snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core acpi_cpufreq snd_pcm snd_timer snd soundcore lpc_ich mfd_core processor sch_fq_codel sd_mod hid_generic usbhid hid ahci libahci libata ehci_pci ehci_hcd scsi_mod usbcore usb_common > [ 315.146785] CPU: 3 PID: 38 Comm: khugepaged Not tainted 4.7.0-rc3-next-20160614-dbg-00004-ga1c2cbc-dirty #488 > [ 315.146841] task: ffff8800bfaf2900 ti: ffff880112468000 task.ti: ffff880112468000 > [ 315.146859] RIP: 0010:[<ffffffffa02c413d>] [<ffffffffa02c413d>] zs_page_migrate+0x355/0xaa0 [zsmalloc] Thanks for the report! zs_page_migrate+0x355? Could you tell me what line is it? It seems to be related to obj_to_head. Could you test with [zsmalloc: keep first object offset in struct page] in mmotm? > [ 315.146892] RSP: 0000:ffff88011246f138 EFLAGS: 00010293 > [ 315.146906] RAX: 736761742d6f6e2c RBX: ffff880017ad9a80 RCX: 0000000000000000 > [ 315.146924] RDX: 1ffffffff064d704 RSI: ffff88000511469a RDI: ffffffff8326ba20 > [ 315.146942] RBP: ffff88011246f328 R08: 0000000000000001 R09: 0000000000000000 > [ 315.146959] R10: ffff88011246f0a8 R11: ffff8800bfc07fff R12: ffff88011246f300 > [ 315.146977] R13: ffffed0015523e6f R14: ffff8800aa91f378 R15: ffffea0000144500 > [ 315.146995] FS: 0000000000000000(0000) GS:ffff880113780000(0000) knlGS:0000000000000000 > [ 315.147015] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 315.147030] CR2: 00007f3f97911000 CR3: 0000000002209000 CR4: 00000000000006e0 > [ 315.147046] Stack: > [ 315.147052] 1ffff10015523e0f ffff88011246f240 ffff880005116800 00017f80e0000000 > [ 315.147083] ffff880017ad9aa8 736761742d6f6e2c 1ffff1002248de34 ffff880017ad9a90 > [ 315.147113] 0000069a1246f660 000000000000069a ffff880005114000 ffffea0002ff0180 > [ 315.147143] Call Trace: > [ 315.147154] [<ffffffffa02c3de8>] ? obj_to_head+0x9d/0x9d [zsmalloc] > [ 315.147175] [<ffffffff81d31dbc>] ? _raw_spin_unlock_irqrestore+0x47/0x5c > [ 315.147195] [<ffffffff812275b1>] ? isolate_freepages_block+0x2f9/0x5a6 > [ 315.147213] [<ffffffff8127f15c>] ? kasan_poison_shadow+0x2f/0x31 > [ 315.147230] [<ffffffff8127f66a>] ? kasan_alloc_pages+0x39/0x3b > [ 315.147246] [<ffffffff812267e6>] ? map_pages+0x1f3/0x3ad > [ 315.147262] [<ffffffff812265f3>] ? update_pageblock_skip+0x18d/0x18d > [ 315.147280] [<ffffffff81115972>] ? up_read+0x1a/0x30 > [ 315.147296] [<ffffffff8111ec7e>] ? debug_check_no_locks_freed+0x150/0x22b > [ 315.147315] [<ffffffff812842d1>] move_to_new_page+0x4dd/0x615 > [ 315.147332] [<ffffffff81283df4>] ? migrate_page+0x75/0x75 > [ 315.147347] [<ffffffff8122785e>] ? isolate_freepages_block+0x5a6/0x5a6 > [ 315.147366] [<ffffffff812851c1>] migrate_pages+0xadd/0x131a > [ 315.147382] [<ffffffff8122785e>] ? isolate_freepages_block+0x5a6/0x5a6 > [ 315.147399] [<ffffffff81226375>] ? kzfree+0x2b/0x2b > [ 315.147414] [<ffffffff812846e4>] ? buffer_migrate_page+0x2db/0x2db > [ 315.147431] [<ffffffff8122a6cf>] compact_zone+0xcdb/0x1155 > [ 315.147448] [<ffffffff812299f4>] ? compaction_suitable+0x76/0x76 > [ 315.147465] [<ffffffff8122ac29>] compact_zone_order+0xe0/0x167 > [ 315.147481] [<ffffffff8111f0ac>] ? debug_show_all_locks+0x226/0x226 > [ 315.147499] [<ffffffff8122ab49>] ? compact_zone+0x1155/0x1155 > [ 315.147515] [<ffffffff810d58d1>] ? finish_task_switch+0x3de/0x484 > [ 315.147533] [<ffffffff8122bcff>] try_to_compact_pages+0x2f1/0x648 > [ 315.147550] [<ffffffff8122bcff>] ? try_to_compact_pages+0x2f1/0x648 > [ 315.147568] [<ffffffff8122ba0e>] ? compaction_zonelist_suitable+0x3a6/0x3a6 > [ 315.147589] [<ffffffff811ee129>] ? get_page_from_freelist+0x2c0/0x129a > [ 315.147608] [<ffffffff811ef1ed>] __alloc_pages_direct_compact+0xea/0x30d > [ 315.147626] [<ffffffff811ef103>] ? get_page_from_freelist+0x129a/0x129a > [ 315.147645] [<ffffffff811f0422>] __alloc_pages_nodemask+0x840/0x16b6 > [ 315.147663] [<ffffffff810dba27>] ? try_to_wake_up+0x696/0x6c8 > [ 315.149147] [<ffffffff811efbe2>] ? warn_alloc_failed+0x226/0x226 > [ 315.150615] [<ffffffff810dba69>] ? wake_up_process+0x10/0x12 > [ 315.152078] [<ffffffff810dbaf4>] ? wake_up_q+0x89/0xa7 > [ 315.153539] [<ffffffff81128b6f>] ? rwsem_wake+0x131/0x15c > [ 315.155007] [<ffffffff812922e7>] ? khugepaged+0x4072/0x484f > [ 315.156471] [<ffffffff8128e449>] khugepaged+0x1d4/0x484f > [ 315.157940] [<ffffffff8128e275>] ? hugepage_vma_revalidate+0xef/0xef > [ 315.159402] [<ffffffff810d58d1>] ? finish_task_switch+0x3de/0x484 > [ 315.160870] [<ffffffff81d31df8>] ? _raw_spin_unlock_irq+0x27/0x45 > [ 315.162341] [<ffffffff8111cde6>] ? trace_hardirqs_on_caller+0x3d2/0x492 > [ 315.163814] [<ffffffff8111112e>] ? prepare_to_wait_event+0x3f7/0x3f7 > [ 315.165295] [<ffffffff81d27ad5>] ? __schedule+0xa4d/0xd16 > [ 315.166763] [<ffffffff810ccde3>] kthread+0x252/0x261 > [ 315.168214] [<ffffffff8128e275>] ? hugepage_vma_revalidate+0xef/0xef > [ 315.169646] [<ffffffff810ccb91>] ? kthread_create_on_node+0x377/0x377 > [ 315.171056] [<ffffffff81d3277f>] ret_from_fork+0x1f/0x40 > [ 315.172462] [<ffffffff810ccb91>] ? kthread_create_on_node+0x377/0x377 > [ 315.173869] Code: 03 b5 60 fe ff ff e8 2e fc ff ff a8 01 74 4c 48 83 e0 fe bf 01 00 00 00 48 89 85 38 fe ff ff e8 41 18 e1 e0 48 8b 85 38 fe ff ff <f0> 0f ba 28 00 73 29 bf 01 00 00 00 41 bc f5 ff ff ff e8 ea 27 > [ 315.175573] RIP [<ffffffffa02c413d>] zs_page_migrate+0x355/0xaa0 [zsmalloc] > [ 315.177084] RSP <ffff88011246f138> > [ 315.186572] ---[ end trace 0962b8ee48c98bbc ]--- > > > > > [ 315.186577] BUG: sleeping function called from invalid context at include/linux/sched.h:2960 > [ 315.186580] in_atomic(): 1, irqs_disabled(): 0, pid: 38, name: khugepaged > [ 315.186581] INFO: lockdep is turned off. > [ 315.186583] Preemption disabled at:[<ffffffffa02c3f1d>] zs_page_migrate+0x135/0xaa0 [zsmalloc] > > [ 315.186594] CPU: 3 PID: 38 Comm: khugepaged Tainted: G D 4.7.0-rc3-next-20160614-dbg-00004-ga1c2cbc-dirty #488 > [ 315.186599] 0000000000000000 ffff88011246ed58 ffffffff814d56bf ffff8800bfaf2900 > [ 315.186604] 0000000000000004 ffff88011246ed98 ffffffff810d5e6a 0000000000000000 > [ 315.186609] ffff8800bfaf2900 ffffffff81e39820 0000000000000b90 0000000000000000 > [ 315.186614] Call Trace: > [ 315.186618] [<ffffffff814d56bf>] dump_stack+0x68/0x92 > [ 315.186622] [<ffffffff810d5e6a>] ___might_sleep+0x3bd/0x3c9 > [ 315.186625] [<ffffffff810d5fd1>] __might_sleep+0x15b/0x167 > [ 315.186630] [<ffffffff810ac4c1>] exit_signals+0x7a/0x34f > [ 315.186633] [<ffffffff810ac447>] ? get_signal+0xd9b/0xd9b > [ 315.186636] [<ffffffff811aee21>] ? irq_work_queue+0x101/0x11c > [ 315.186640] [<ffffffff8111f0ac>] ? debug_show_all_locks+0x226/0x226 > [ 315.186645] [<ffffffff81096357>] do_exit+0x34d/0x1b4e > [ 315.186648] [<ffffffff81130e16>] ? vprintk_emit+0x4b1/0x4d3 > [ 315.186652] [<ffffffff8109600a>] ? is_current_pgrp_orphaned+0x8c/0x8c > [ 315.186655] [<ffffffff81122c56>] ? lock_acquire+0xec/0x147 > [ 315.186658] [<ffffffff811321ef>] ? kmsg_dump+0x12/0x27a > [ 315.186662] [<ffffffff81132448>] ? kmsg_dump+0x26b/0x27a > [ 315.186666] [<ffffffff81036507>] oops_end+0x9d/0xa4 > [ 315.186669] [<ffffffff8103662c>] die+0x55/0x5e > [ 315.186672] [<ffffffff81032aa0>] do_general_protection+0x16c/0x337 > [ 315.186676] [<ffffffff81d33abf>] general_protection+0x1f/0x30 > [ 315.186681] [<ffffffffa02c413d>] ? zs_page_migrate+0x355/0xaa0 [zsmalloc] > [ 315.186686] [<ffffffffa02c4136>] ? zs_page_migrate+0x34e/0xaa0 [zsmalloc] > [ 315.186691] [<ffffffffa02c3de8>] ? obj_to_head+0x9d/0x9d [zsmalloc] > [ 315.186695] [<ffffffff81d31dbc>] ? _raw_spin_unlock_irqrestore+0x47/0x5c > [ 315.186699] [<ffffffff812275b1>] ? isolate_freepages_block+0x2f9/0x5a6 > [ 315.186702] [<ffffffff8127f15c>] ? kasan_poison_shadow+0x2f/0x31 > [ 315.186706] [<ffffffff8127f66a>] ? kasan_alloc_pages+0x39/0x3b > [ 315.186709] [<ffffffff812267e6>] ? map_pages+0x1f3/0x3ad > [ 315.186712] [<ffffffff812265f3>] ? update_pageblock_skip+0x18d/0x18d > [ 315.186716] [<ffffffff81115972>] ? up_read+0x1a/0x30 > [ 315.186719] [<ffffffff8111ec7e>] ? debug_check_no_locks_freed+0x150/0x22b > [ 315.186723] [<ffffffff812842d1>] move_to_new_page+0x4dd/0x615 > [ 315.186726] [<ffffffff81283df4>] ? migrate_page+0x75/0x75 > [ 315.186730] [<ffffffff8122785e>] ? isolate_freepages_block+0x5a6/0x5a6 > [ 315.186733] [<ffffffff812851c1>] migrate_pages+0xadd/0x131a > [ 315.186737] [<ffffffff8122785e>] ? isolate_freepages_block+0x5a6/0x5a6 > [ 315.186740] [<ffffffff81226375>] ? kzfree+0x2b/0x2b > [ 315.186743] [<ffffffff812846e4>] ? buffer_migrate_page+0x2db/0x2db > [ 315.186747] [<ffffffff8122a6cf>] compact_zone+0xcdb/0x1155 > [ 315.186751] [<ffffffff812299f4>] ? compaction_suitable+0x76/0x76 > [ 315.186754] [<ffffffff8122ac29>] compact_zone_order+0xe0/0x167 > [ 315.186757] [<ffffffff8111f0ac>] ? debug_show_all_locks+0x226/0x226 > [ 315.186761] [<ffffffff8122ab49>] ? compact_zone+0x1155/0x1155 > [ 315.186764] [<ffffffff810d58d1>] ? finish_task_switch+0x3de/0x484 > [ 315.186768] [<ffffffff8122bcff>] try_to_compact_pages+0x2f1/0x648 > [ 315.186771] [<ffffffff8122bcff>] ? try_to_compact_pages+0x2f1/0x648 > [ 315.186775] [<ffffffff8122ba0e>] ? compaction_zonelist_suitable+0x3a6/0x3a6 > [ 315.186780] [<ffffffff811ee129>] ? get_page_from_freelist+0x2c0/0x129a > [ 315.186783] [<ffffffff811ef1ed>] __alloc_pages_direct_compact+0xea/0x30d > [ 315.186787] [<ffffffff811ef103>] ? get_page_from_freelist+0x129a/0x129a > [ 315.186791] [<ffffffff811f0422>] __alloc_pages_nodemask+0x840/0x16b6 > [ 315.186794] [<ffffffff810dba27>] ? try_to_wake_up+0x696/0x6c8 > [ 315.186798] [<ffffffff811efbe2>] ? warn_alloc_failed+0x226/0x226 > [ 315.186801] [<ffffffff810dba69>] ? wake_up_process+0x10/0x12 > [ 315.186804] [<ffffffff810dbaf4>] ? wake_up_q+0x89/0xa7 > [ 315.186807] [<ffffffff81128b6f>] ? rwsem_wake+0x131/0x15c > [ 315.186811] [<ffffffff812922e7>] ? khugepaged+0x4072/0x484f > [ 315.186815] [<ffffffff8128e449>] khugepaged+0x1d4/0x484f > [ 315.186819] [<ffffffff8128e275>] ? hugepage_vma_revalidate+0xef/0xef > [ 315.186822] [<ffffffff810d58d1>] ? finish_task_switch+0x3de/0x484 > [ 315.186826] [<ffffffff81d31df8>] ? _raw_spin_unlock_irq+0x27/0x45 > [ 315.186829] [<ffffffff8111cde6>] ? trace_hardirqs_on_caller+0x3d2/0x492 > [ 315.186832] [<ffffffff8111112e>] ? prepare_to_wait_event+0x3f7/0x3f7 > [ 315.186836] [<ffffffff81d27ad5>] ? __schedule+0xa4d/0xd16 > [ 315.186840] [<ffffffff810ccde3>] kthread+0x252/0x261 > [ 315.186843] [<ffffffff8128e275>] ? hugepage_vma_revalidate+0xef/0xef > [ 315.186846] [<ffffffff810ccb91>] ? kthread_create_on_node+0x377/0x377 > [ 315.186851] [<ffffffff81d3277f>] ret_from_fork+0x1f/0x40 > [ 315.186854] [<ffffffff810ccb91>] ? kthread_create_on_node+0x377/0x377 > [ 315.186869] note: khugepaged[38] exited with preempt_count 4 > > > > [ 340.319852] NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [jbd2/zram0-8:405] > [ 340.319856] Modules linked in: lzo zram zsmalloc mousedev coretemp hwmon crc32c_intel r8169 i2c_i801 mii snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core acpi_cpufreq snd_pcm snd_timer snd soundcore lpc_ich mfd_core processor sch_fq_codel sd_mod hid_generic usbhid hid ahci libahci libata ehci_pci ehci_hcd scsi_mod usbcore usb_common > [ 340.319900] irq event stamp: 834296 > [ 340.319902] hardirqs last enabled at (834295): [<ffffffff81280b07>] quarantine_put+0xa1/0xe6 > [ 340.319911] hardirqs last disabled at (834296): [<ffffffff81d31e68>] _raw_write_lock_irqsave+0x13/0x4c > [ 340.319917] softirqs last enabled at (833836): [<ffffffff81d3455e>] __do_softirq+0x406/0x48f > [ 340.319922] softirqs last disabled at (833831): [<ffffffff8109914a>] irq_exit+0x6a/0x113 > [ 340.319929] CPU: 2 PID: 405 Comm: jbd2/zram0-8 Tainted: G D 4.7.0-rc3-next-20160614-dbg-00004-ga1c2cbc-dirty #488 > [ 340.319935] task: ffff8800bb512900 ti: ffff8800a69c0000 task.ti: ffff8800a69c0000 > [ 340.319937] RIP: 0010:[<ffffffff814ed772>] [<ffffffff814ed772>] delay_tsc+0x0/0xa4 > [ 340.319943] RSP: 0018:ffff8800a69c70f8 EFLAGS: 00000206 > [ 340.319945] RAX: 0000000000000001 RBX: ffff8800aa91f300 RCX: 0000000000000000 > [ 340.319947] RDX: 0000000000000003 RSI: ffffffff81ed2840 RDI: 0000000000000001 > [ 340.319949] RBP: ffff8800a69c7100 R08: 0000000000000001 R09: 0000000000000000 > [ 340.319951] R10: ffff8800a69c70e8 R11: 000000007e7516b9 R12: ffff8800aa91f310 > [ 340.319954] R13: ffff8800aa91f308 R14: 000000001f3306fa R15: 0000000000000000 > [ 340.319956] FS: 0000000000000000(0000) GS:ffff880113700000(0000) knlGS:0000000000000000 > [ 340.319959] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 340.319961] CR2: 00007fc99caba080 CR3: 00000000b9796000 CR4: 00000000000006e0 > [ 340.319963] Stack: > [ 340.319964] ffffffff814ed89c ffff8800a69c7148 ffffffff8112795d ffffed0015523e60 > [ 340.319970] 000000009e857390 ffff8800aa91f300 ffff8800bbe21cc0 ffff8800047d6f80 > [ 340.319975] ffff8800a69c72b0 ffff8800aa91f300 ffff8800a69c7168 ffffffff81d31bed > [ 340.319980] Call Trace: > [ 340.319983] [<ffffffff814ed89c>] ? __delay+0xa/0xc > [ 340.319988] [<ffffffff8112795d>] do_raw_spin_lock+0x197/0x257 > [ 340.319991] [<ffffffff81d31bed>] _raw_spin_lock+0x35/0x3c > [ 340.319998] [<ffffffffa02c6062>] ? zs_free+0x191/0x27a [zsmalloc] > [ 340.320003] [<ffffffffa02c6062>] zs_free+0x191/0x27a [zsmalloc] > [ 340.320008] [<ffffffffa02c5ed1>] ? free_zspage+0xe8/0xe8 [zsmalloc] > [ 340.320012] [<ffffffff810d58d1>] ? finish_task_switch+0x3de/0x484 > [ 340.320015] [<ffffffff810d58a6>] ? finish_task_switch+0x3b3/0x484 > [ 340.320021] [<ffffffff81d27ad5>] ? __schedule+0xa4d/0xd16 > [ 340.320024] [<ffffffff81d28086>] ? preempt_schedule+0x1f/0x21 > [ 340.320028] [<ffffffff81d27ff9>] ? preempt_schedule_common+0xb7/0xe8 > [ 340.320034] [<ffffffffa02d3f0e>] zram_free_page+0x112/0x1f6 [zram] > [ 340.320039] [<ffffffffa02d5e6c>] zram_make_request+0x45d/0x89f [zram] > [ 340.320045] [<ffffffffa02d5a0f>] ? zram_rw_page+0x21d/0x21d [zram] > [ 340.320048] [<ffffffff81493657>] ? blk_exit_rl+0x39/0x39 > [ 340.320053] [<ffffffff8148fe3f>] ? handle_bad_sector+0x192/0x192 > [ 340.320056] [<ffffffff8127f83e>] ? kasan_slab_alloc+0x12/0x14 > [ 340.320059] [<ffffffff8127ca68>] ? kmem_cache_alloc+0xf3/0x101 > [ 340.320062] [<ffffffff81494e37>] generic_make_request+0x2bc/0x496 > [ 340.320066] [<ffffffff81494b7b>] ? blk_plug_queued_count+0x103/0x103 > [ 340.320069] [<ffffffff8111ec7e>] ? debug_check_no_locks_freed+0x150/0x22b > [ 340.320072] [<ffffffff81495309>] submit_bio+0x2f8/0x324 > [ 340.320075] [<ffffffff81495011>] ? generic_make_request+0x496/0x496 > [ 340.320078] [<ffffffff811190fc>] ? lockdep_init_map+0x1ef/0x4b0 > [ 340.320082] [<ffffffff814880a4>] submit_bio_wait+0xff/0x138 > [ 340.320085] [<ffffffff81487fa5>] ? bio_add_page+0x292/0x292 > [ 340.320090] [<ffffffff814ab82c>] blkdev_issue_discard+0xee/0x148 > [ 340.320093] [<ffffffff814ab73e>] ? __blkdev_issue_discard+0x399/0x399 > [ 340.320097] [<ffffffff8111f0ac>] ? debug_show_all_locks+0x226/0x226 > [ 340.320101] [<ffffffff81404de8>] ext4_free_data_callback+0x2cc/0x8bc > [ 340.320104] [<ffffffff81404de8>] ? ext4_free_data_callback+0x2cc/0x8bc > [ 340.320107] [<ffffffff81404b1c>] ? ext4_mb_release_context+0x10aa/0x10aa > [ 340.320111] [<ffffffff81122c56>] ? lock_acquire+0xec/0x147 > [ 340.320115] [<ffffffff813c8a6a>] ? ext4_journal_commit_callback+0x203/0x220 > [ 340.320119] [<ffffffff813c8a61>] ext4_journal_commit_callback+0x1fa/0x220 > [ 340.320124] [<ffffffff81438bf5>] jbd2_journal_commit_transaction+0x3753/0x3c20 > [ 340.320128] [<ffffffff814354a2>] ? journal_submit_commit_record+0x777/0x777 > [ 340.320132] [<ffffffff8111f0ac>] ? debug_show_all_locks+0x226/0x226 > [ 340.320135] [<ffffffff811205a5>] ? __lock_acquire+0x14f9/0x33b8 > [ 340.320139] [<ffffffff81d31db0>] ? _raw_spin_unlock_irqrestore+0x3b/0x5c > [ 340.320143] [<ffffffff8111cde6>] ? trace_hardirqs_on_caller+0x3d2/0x492 > [ 340.320146] [<ffffffff81d31dbc>] ? _raw_spin_unlock_irqrestore+0x47/0x5c > [ 340.320151] [<ffffffff81156945>] ? try_to_del_timer_sync+0xa5/0xce > [ 340.320154] [<ffffffff8111cde6>] ? trace_hardirqs_on_caller+0x3d2/0x492 > [ 340.320157] [<ffffffff8143febd>] kjournald2+0x246/0x6e1 > [ 340.320160] [<ffffffff8143febd>] ? kjournald2+0x246/0x6e1 > [ 340.320163] [<ffffffff8143fc77>] ? commit_timeout+0xb/0xb > [ 340.320167] [<ffffffff8111112e>] ? prepare_to_wait_event+0x3f7/0x3f7 > [ 340.320171] [<ffffffff810ccde3>] kthread+0x252/0x261 > [ 340.320174] [<ffffffff8143fc77>] ? commit_timeout+0xb/0xb > [ 340.320177] [<ffffffff810ccb91>] ? kthread_create_on_node+0x377/0x377 > [ 340.320181] [<ffffffff81d3277f>] ret_from_fork+0x1f/0x40 > [ 340.320185] [<ffffffff810ccb91>] ? kthread_create_on_node+0x377/0x377 > [ 340.320186] Code: 5c 5d c3 55 48 8d 04 bd 00 00 00 00 65 48 8b 15 8d 59 b2 7e 48 69 d2 fa 00 00 00 48 89 e5 f7 e2 48 8d 7a 01 e8 22 01 00 00 5d c3 <55> 48 89 e5 41 56 41 55 41 54 53 49 89 fd bf 01 00 00 00 e8 ed > > -ss
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