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Date: Wed, 23 Aug 2023 11:49:16 -0400
From: "Theodore Ts'o" <tytso@....edu>
To: Fengnan Chang <changfengnan@...edance.com>
Cc: adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org
Subject: Re: [PATCH v4] ext4: improve trim efficiency
On Tue, Aug 22, 2023 at 09:51:35AM +0800, Fengnan Chang wrote:
> In commit a015434480dc("ext4: send parallel discards on commit
> completions"), issue all discard commands in parallel make all
> bios could merged into one request, so lowlevel drive can issue
> multi segments in one time which is more efficiency, but commit
> 55cdd0af2bc5 ("ext4: get discard out of jbd2 commit kthread contex")
> seems broke this way, let's fix it.
> In my test:
> 1. create 10 normal files, each file size is 10G.
> 2. deallocate file, punch a 16k holes every 32k.
> 3. trim all fs.
>
> the time of fstrim fs reduce from 6.7s to 1.3s.
>
> Signed-off-by: Fengnan Chang <changfengnan@...edance.com>
Are you set up to run xfstests? This commit is causing generic/251 to
fail, and that test is designed to test fstrim functionality. To
reproduce the failure, please see:
https://github.com/tytso/xfstests-bld/blob/master/Documentation/kvm-quickstart.md
... and then run "kvm-xfstests -c ext4 generic/251".
I've attached the failing test log for your convenience.
When you're working on improving this commit, please run
"kvm-xfstests -c ext4 -g trim"
... to make sure there are no regression caused by the changes.
Thanks!!
- Ted
KERNEL: kernel 6.5.0-rc3-xfstests-00061-g2251f08ac268 #256 SMP PREEMPT_DYNAMIC Wed Aug 23 11:35:44 EDT 2023 x86_64
FSTESTVER: blktests 527d03f (Sun, 6 Aug 2023 23:12:48 -0700)
FSTESTVER: e2fsprogs v1.47.0-144-g441741fc (Tue, 8 Aug 2023 16:08:52 -0400)
FSTESTVER: fio fio-3.35 (Tue, 23 May 2023 12:33:03 -0600)
FSTESTVER: fsverity v1.5-7-g585e14a (Wed, 5 Jul 2023 20:46:59 -0700)
FSTESTVER: ima-evm-utils v1.5 (Mon, 6 Mar 2023 07:40:07 -0500)
FSTESTVER: nvme-cli v1.16 (Thu, 11 Nov 2021 13:09:06 -0800)
FSTESTVER: quota v4.05-53-gd90b7d5 (Tue, 6 Dec 2022 12:59:03 +0100)
FSTESTVER: util-linux v2.39.1 (Tue, 27 Jun 2023 14:31:13 +0200)
FSTESTVER: xfsprogs v6.4.0 (Wed, 19 Jul 2023 14:01:37 +0200)
FSTESTVER: xfstests v2023.08.06-7-g973a461dd (Tue, 8 Aug 2023 20:16:18 -0400)
FSTESTVER: xfstests-bld dff94950 (Thu, 10 Aug 2023 16:35:45 -0400)
FSTESTVER: zz_build-distro bookworm
FSTESTCFG: "ext4/4k"
FSTESTSET: "generic/251"
FSTESTEXC: ""
FSTESTOPT: "aex"
MNTOPTS: ""
CPUS: "2"
MEM: "1975.34"
total used free shared buff/cache available
Mem: 1975 93 1831 0 83 1882
Swap: 0 0 0
BEGIN TEST 4k (1 test): Ext4 4k block Wed Aug 23 11:35:55 EDT 2023
DEVICE: /dev/vdb
EXT_MKFS_OPTIONS: -b 4096
EXT_MOUNT_OPTIONS: -o block_validity
FSTYP -- ext4
PLATFORM -- Linux/x86_64 kvm-xfstests 6.5.0-rc3-xfstests-00061-g2251f08ac268 #256 SMP PREEMPT_DYNAMIC Wed Aug 23 11:35:44 EDT 2023
MKFS_OPTIONS -- -F -q -b 4096 /dev/vdc
MOUNT_OPTIONS -- -o acl,user_xattr -o block_validity /dev/vdc /vdc
generic/251 105s ... [11:35:55][ 3.436826] run fstests generic/251 at 2023-08-23 11:35:55
[ 4.483484] EXT4-fs error (device vdc): mb_free_blocks:1916: group 24, block 786432:freeing already freed block (bit 0); block bitmap corrupt.
[ 4.487526] divide error: 0000 [#1] PREEMPT SMP NOPTI
[ 4.487783] CPU: 0 PID: 2802 Comm: fstrim Not tainted 6.5.0-rc3-xfstests-00061-g2251f08ac268 #256
[ 4.488212] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 4.488624] RIP: 0010:mb_update_avg_fragment_size.isra.0+0x29/0x150
[ 4.488907] Code: 90 0f 1f 44 00 00 f6 46 7c 80 0f 84 cb 00 00 00 41 56 41 55 41 54 55 53 8b 42 14 48 89 d3 85 c0 0f 84 a8 00 00 00 99 48 89 f5 <f7> 7b 18 ba ff ff ff ff 0f bd d0 41 89 d4 41 83 ec 01 0f 88 f8 00
[ 4.489734] RSP: 0018:ffffc90003d43be8 EFLAGS: 00010206
[ 4.489969] RAX: 000000000000062b RBX: ffff888009543450 RCX: ffff88800831fdd0
[ 4.490288] RDX: 0000000000000000 RSI: ffff88800c677000 RDI: 000000000000000c
[ 4.490610] RBP: ffff88800c677000 R08: 000000000000000d R09: 0000000000000003
[ 4.490931] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000003
[ 4.491255] R13: 0000000000000000 R14: 0000000000000000 R15: ffffc90003d43d70
[ 4.491575] FS: 00007f06cb0dd840(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000
[ 4.491936] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4.492196] CR2: 00007f06cb37c445 CR3: 000000000c5be002 CR4: 0000000000770ef0
[ 4.492519] PKRU: 55555554
[ 4.492644] Call Trace:
[ 4.492763] <TASK>
[ 4.492865] ? die+0x36/0x80
[ 4.493003] ? do_trap+0xf4/0x100
[ 4.493157] ? mb_update_avg_fragment_size.isra.0+0x29/0x150
[ 4.493415] ? do_error_trap+0x65/0x80
[ 4.493586] ? mb_update_avg_fragment_size.isra.0+0x29/0x150
[ 4.493843] ? exc_divide_error+0x38/0x50
[ 4.494026] ? mb_update_avg_fragment_size.isra.0+0x29/0x150
[ 4.494282] ? asm_exc_divide_error+0x1a/0x20
[ 4.494482] ? mb_update_avg_fragment_size.isra.0+0x29/0x150
[ 4.494739] ? mb_set_largest_free_order.isra.0+0xb4/0x140
[ 4.494986] mb_mark_used+0x319/0x370
[ 4.495156] ext4_try_to_trim_range+0x244/0x650
[ 4.495369] ext4_trim_all_free+0xf0/0x1f0
[ 4.495559] ext4_trim_fs+0x23a/0x2e0
[ 4.495727] __ext4_ioctl+0x615/0x1190
[ 4.495898] ? kmem_cache_free+0x1f5/0x3f0
[ 4.496086] __x64_sys_ioctl+0x94/0xd0
[ 4.496260] do_syscall_64+0x3b/0x90
[ 4.496429] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[ 4.496662] RIP: 0033:0x7f06cb2feafb
[ 4.496828] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
[ 4.497646] RSP: 002b:00007fff3a167cf0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 4.497982] RAX: ffffffffffffffda RBX: 000055abce9da960 RCX: 00007f06cb2feafb
[ 4.498301] RDX: 00007fff3a167d50 RSI: 00000000c0185879 RDI: 0000000000000003
[ 4.498619] RBP: 00007fff3a167e00 R08: 00007f06cb3d3c60 R09: 00007fff3a1670e0
[ 4.498940] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff3a169b22
[ 4.499262] R13: 0000000000000003 R14: 0000000000000000 R15: 00007f06cb0dd7b8
[ 4.499581] </TASK>
[ 4.499696] ---[ end trace 0000000000000000 ]---
[ 4.500054] RIP: 0010:mb_update_avg_fragment_size.isra.0+0x29/0x150
[ 4.500339] Code: 90 0f 1f 44 00 00 f6 46 7c 80 0f 84 cb 00 00 00 41 56 41 55 41 54 55 53 8b 42 14 48 89 d3 85 c0 0f 84 a8 00 00 00 99 48 89 f5 <f7> 7b 18 ba ff ff ff ff 0f bd d0 41 89 d4 41 83 ec 01 0f 88 f8 00
[ 4.501173] RSP: 0018:ffffc90003d43be8 EFLAGS: 00010206
[ 4.501410] RAX: 000000000000062b RBX: ffff888009543450 RCX: ffff88800831fdd0
[ 4.501731] RDX: 0000000000000000 RSI: ffff88800c677000 RDI: 000000000000000c
[ 4.502051] RBP: ffff88800c677000 R08: 000000000000000d R09: 0000000000000003
[ 4.502372] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000003
[ 4.502691] R13: 0000000000000000 R14: 0000000000000000 R15: ffffc90003d43d70
[ 4.503012] FS: 00007f06cb0dd840(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000
[ 4.503376] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4.503636] CR2: 00007f06cb37c445 CR3: 000000000c5be002 CR4: 0000000000770ef0
[ 4.503956] PKRU: 55555554
[ 4.504083] note: fstrim[2802] exited with preempt_count 1
[ 4.504336] ------------[ cut here ]------------
[ 4.504554] WARNING: CPU: 0 PID: 2802 at kernel/exit.c:818 do_exit+0x3f6/0x440
[ 4.504882] CPU: 0 PID: 2802 Comm: fstrim Tainted: G D 6.5.0-rc3-xfstests-00061-g2251f08ac268 #256
[ 4.505339] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 4.505750] RIP: 0010:do_exit+0x3f6/0x440
[ 4.505935] Code: d2 48 89 54 24 08 e9 10 fd ff ff e8 c4 7c 1c 00 e9 1a ff ff ff 48 8d 7d 18 e8 e6 3d 06 00 e9 02 fd ff ff 0f 0b e9 44 fc ff ff <0f> 0b e9 79 fc ff ff 4c 89 ee bf 05 06 00 00 e8 b6 fd 00 00 e9 37
[ 4.506757] RSP: 0018:ffffc90003d43ef8 EFLAGS: 00010282
[ 4.506991] RAX: 0000000000000001 RBX: ffff888006425d00 RCX: 0000000000000000
[ 4.507313] RDX: 0000000000000001 RSI: 0000000000002710 RDI: ffff88800c5b5280
[ 4.507635] RBP: ffff8880099d52c0 R08: 0000000000000000 R09: ffffffff8285ed40
[ 4.507960] R10: ffffc90003d43e00 R11: ffffffff828ced88 R12: ffff88800c5b5280
[ 4.508282] R13: 000000000000000b R14: ffff888006425d00 R15: ffffc90003d43b38
[ 4.508603] FS: 00007f06cb0dd840(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000
[ 4.508964] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4.509224] CR2: 00007f06cb37c445 CR3: 000000000c5be002 CR4: 0000000000770ef0
[ 4.509545] PKRU: 55555554
[ 4.509673] Call Trace:
[ 4.509787] <TASK>
[ 4.509887] ? do_exit+0x3f6/0x440
[ 4.510044] ? __warn+0x7c/0x130
[ 4.510192] ? do_exit+0x3f6/0x440
[ 4.510351] ? report_bug+0x173/0x1d0
[ 4.510520] ? handle_bug+0x3c/0x70
[ 4.510682] ? exc_invalid_op+0x17/0x70
[ 4.510858] ? asm_exc_invalid_op+0x1a/0x20
[ 4.511057] ? do_exit+0x3f6/0x440
[ 4.511221] ? do_exit+0x68/0x440
[ 4.511376] make_task_dead+0x77/0x130
[ 4.511548] rewind_stack_and_make_dead+0x17/0x20
[ 4.511764] RIP: 0033:0x7f06cb2feafb
[ 4.511928] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
[ 4.512752] RSP: 002b:00007fff3a167cf0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 4.513090] RAX: ffffffffffffffda RBX: 000055abce9da960 RCX: 00007f06cb2feafb
[ 4.513410] RDX: 00007fff3a167d50 RSI: 00000000c0185879 RDI: 0000000000000003
[ 4.513731] RBP: 00007fff3a167e00 R08: 00007f06cb3d3c60 R09: 00007fff3a1670e0
[ 4.514051] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff3a169b22
[ 4.514378] R13: 0000000000000003 R14: 0000000000000000 R15: 00007f06cb0dd7b8
[ 4.514697] </TASK>
[ 4.514801] ---[ end trace 0000000000000000 ]---
[ 25.517834] rcu: INFO: rcu_preempt self-detected stall on CPU
[ 25.519235] rcu: 0-...!: (6299 ticks this GP) idle=e2f4/1/0x4000000000000000 softirq=8446/8475 fqs=182
[ 25.519906] rcu: (t=6300 jiffies g=1349 q=434 ncpus=2)
[ 25.520147] rcu: rcu_preempt kthread starved for 5754 jiffies! g1349 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
[ 25.520600] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
[ 25.521006] rcu: RCU grace-period kthread stack dump:
[ 25.521238] task:rcu_preempt state:R running task stack:0 pid:16 ppid:2 flags:0x00004000
[ 25.521680] Call Trace:
[ 25.521795] <TASK>
[ 25.521898] __schedule+0x2a2/0x820
[ 25.522063] ? __pfx_rcu_gp_kthread+0x10/0x10
[ 25.522263] schedule+0x5e/0xd0
[ 25.522409] schedule_timeout+0x98/0x170
[ 25.522595] ? __pfx_process_timeout+0x10/0x10
[ 25.522799] rcu_gp_fqs_loop+0x15b/0x680
[ 25.522978] rcu_gp_kthread+0x1bb/0x270
[ 25.523159] kthread+0xef/0x120
[ 25.523305] ? __pfx_kthread+0x10/0x10
[ 25.523481] ret_from_fork+0x31/0x50
[ 25.523648] ? __pfx_kthread+0x10/0x10
[ 25.523822] ret_from_fork_asm+0x1b/0x30
[ 25.524001] RIP: 0000:0x0
[ 25.524126] Code: Unable to access opcode bytes at 0xffffffffffffffd6.
[ 25.524414] RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
[ 25.524755] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 25.525072] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 25.525393] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 25.525714] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 25.526030] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 25.526349] </TASK>
[ 25.526453] rcu: Stack dump where RCU GP kthread last ran:
[ 25.526702] CPU: 0 PID: 2806 Comm: fstrim Tainted: G D W 6.5.0-rc3-xfstests-00061-g2251f08ac268 #256
[ 25.527165] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 25.527581] RIP: 0010:kvm_wait+0x4f/0x60
[ 25.527760] Code: 74 1d fb c3 cc cc cc cc 0f b6 07 40 38 c6 75 f3 66 90 0f 00 2d 16 6f 1a 01 f4 c3 cc cc cc cc 66 90 0f 00 2d 07 6f 1a 01 fb f4 <c3> cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
[ 25.528587] RSP: 0018:ffffc90003dbbd10 EFLAGS: 00000246
[ 25.528822] RAX: 0000000000000003 RBX: 0000000000040000 RCX: 0000000000000008
[ 25.529140] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88800c574600
[ 25.529459] RBP: 0000000000000001 R08: 0000000000000008 R09: 0000000000000000
[ 25.529778] R10: ffff88807dc2d640 R11: 0000000000000001 R12: 0000000000000100
[ 25.530099] R13: ffff88800c574600 R14: ffff88807dc2d640 R15: 0000000000000000
[ 25.530423] FS: 00007f795203b840(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000
[ 25.530786] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 25.531046] CR2: ffffffffffffffd6 CR3: 000000000c71e006 CR4: 0000000000770ef0
[ 25.531373] PKRU: 55555554
[ 25.531499] Call Trace:
[ 25.531616] <IRQ>
[ 25.531715] ? rcu_check_gp_kthread_starvation+0x120/0x1a0
[ 25.531964] ? print_cpu_stall+0x13b/0x290
[ 25.532150] ? check_cpu_stall+0xe9/0x240
[ 25.532337] ? rcu_sched_clock_irq+0xdf/0x440
[ 25.532536] ? update_process_times+0x74/0xb0
[ 25.532739] ? tick_sched_timer+0x77/0xb0
[ 25.532922] ? __pfx_tick_sched_timer+0x10/0x10
[ 25.533131] ? __hrtimer_run_queues+0x10d/0x2a0
[ 25.533336] ? hrtimer_interrupt+0xf8/0x230
[ 25.533529] ? __sysvec_apic_timer_interrupt+0x5e/0x130
[ 25.533767] ? sysvec_apic_timer_interrupt+0x65/0x80
[ 25.533994] </IRQ>
[ 25.534095] <TASK>
[ 25.534194] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 25.534432] ? kvm_wait+0x4f/0x60
[ 25.534588] __pv_queued_spin_lock_slowpath+0x333/0x370
[ 25.534825] _raw_spin_lock+0x29/0x30
[ 25.534992] ext4_trim_all_free+0xbb/0x1f0
[ 25.535184] ext4_trim_fs+0x23a/0x2e0
[ 25.535356] __ext4_ioctl+0x615/0x1190
[ 25.535533] ? kmem_cache_free+0x1f5/0x3f0
[ 25.535723] __x64_sys_ioctl+0x94/0xd0
[ 25.535896] do_syscall_64+0x3b/0x90
[ 25.536061] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[ 25.536296] RIP: 0033:0x7f795225cafb
[ 25.536461] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
[ 25.537290] RSP: 002b:00007ffd6b698520 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 25.537632] RAX: ffffffffffffffda RBX: 0000559e989b9960 RCX: 00007f795225cafb
[ 25.537954] RDX: 00007ffd6b698580 RSI: 00000000c0185879 RDI: 0000000000000003
[ 25.538274] RBP: 00007ffd6b698630 R08: 00007f7952331c60 R09: 00007ffd6b697910
[ 25.538595] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd6b699b22
[ 25.538915] R13: 0000000000000003 R14: 0000000000000000 R15: 00007f795203b7b8
[ 25.539237] </TASK>
[ 25.539341] CPU: 0 PID: 2806 Comm: fstrim Tainted: G D W 6.5.0-rc3-xfstests-00061-g2251f08ac268 #256
[ 25.539804] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 25.540216] RIP: 0010:kvm_wait+0x4f/0x60
[ 25.540396] Code: 74 1d fb c3 cc cc cc cc 0f b6 07 40 38 c6 75 f3 66 90 0f 00 2d 16 6f 1a 01 f4 c3 cc cc cc cc 66 90 0f 00 2d 07 6f 1a 01 fb f4 <c3> cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
[ 25.541216] RSP: 0018:ffffc90003dbbd10 EFLAGS: 00000246
[ 25.541452] RAX: 0000000000000003 RBX: 0000000000040000 RCX: 0000000000000008
[ 25.541774] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88800c574600
[ 25.542098] RBP: 0000000000000001 R08: 0000000000000008 R09: 0000000000000000
[ 25.542417] R10: ffff88807dc2d640 R11: 0000000000000001 R12: 0000000000000100
[ 25.542738] R13: ffff88800c574600 R14: ffff88807dc2d640 R15: 0000000000000000
[ 25.543057] FS: 00007f795203b840(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000
[ 25.543420] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 25.543681] CR2: ffffffffffffffd6 CR3: 000000000c71e006 CR4: 0000000000770ef0
[ 25.543997] PKRU: 55555554
[ 25.544124] Call Trace:
[ 25.544238] <IRQ>
[ 25.544336] ? rcu_dump_cpu_stacks+0xf7/0x180
[ 25.544534] ? print_cpu_stall+0x140/0x290
[ 25.544720] ? check_cpu_stall+0xe9/0x240
[ 25.544905] ? rcu_sched_clock_irq+0xdf/0x440
[ 25.545109] ? update_process_times+0x74/0xb0
[ 25.545309] ? tick_sched_timer+0x77/0xb0
[ 25.545492] ? __pfx_tick_sched_timer+0x10/0x10
[ 25.545696] ? __hrtimer_run_queues+0x10d/0x2a0
[ 25.545905] ? hrtimer_interrupt+0xf8/0x230
[ 25.546097] ? __sysvec_apic_timer_interrupt+0x5e/0x130
[ 25.546336] ? sysvec_apic_timer_interrupt+0x65/0x80
[ 25.546564] </IRQ>
[ 25.546664] <TASK>
[ 25.546762] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 25.547001] ? kvm_wait+0x4f/0x60
[ 25.547155] __pv_queued_spin_lock_slowpath+0x333/0x370
[ 25.547394] _raw_spin_lock+0x29/0x30
[ 25.547562] ext4_trim_all_free+0xbb/0x1f0
[ 25.547747] ext4_trim_fs+0x23a/0x2e0
[ 25.547919] __ext4_ioctl+0x615/0x1190
[ 25.548092] ? kmem_cache_free+0x1f5/0x3f0
[ 25.548278] __x64_sys_ioctl+0x94/0xd0
[ 25.548451] do_syscall_64+0x3b/0x90
[ 25.548617] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[ 25.548842] RIP: 0033:0x7f795225cafb
[ 25.549005] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
[ 25.549829] RSP: 002b:00007ffd6b698520 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 25.550166] RAX: ffffffffffffffda RBX: 0000559e989b9960 RCX: 00007f795225cafb
[ 25.550487] RDX: 00007ffd6b698580 RSI: 00000000c0185879 RDI: 0000000000000003
[ 25.550805] RBP: 00007ffd6b698630 R08: 00007f7952331c60 R09: 00007ffd6b697910
[ 25.551117] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd6b699b22
[ 25.551467] R13: 0000000000000003 R14: 0000000000000000 R15: 00007f795203b7b8
[ 25.551903] </TASK>
[ 28.044765] watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [ext4lazyinit:163]
[ 28.046276] CPU: 1 PID: 163 Comm: ext4lazyinit Tainted: G D W 6.5.0-rc3-xfstests-00061-g2251f08ac268 #256
[ 28.047924] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 28.048535] RIP: 0010:__pv_queued_spin_lock_slowpath+0x275/0x370
[ 28.048926] Code: 40 d6 02 00 8d 42 ff 48 98 48 03 2c c5 00 a9 6c 82 4c 89 75 00 b8 00 80 00 00 eb 13 84 c0 75 08 0f b6 55 14 84 d2 75 4b f3 90 <83> e8 01 74 44 41 8b 56 08 85 d2 74 e5 41 8b 46 08 85 c0 75 0a f3
[ 28.050207] RSP: 0018:ffffc90000a57db0 EFLAGS: 00000202
[ 28.050544] RAX: 0000000000006e6b RBX: 0000000000080000 RCX: 0000000000000001
[ 28.051007] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88807dd2d654
[ 28.051494] RBP: ffff88807dc2d640 R08: 0000000000000000 R09: 0000000000031590
[ 28.051954] R10: 0000000000000000 R11: ffff888003f5a540 R12: 0000000000000600
[ 28.052420] R13: ffff88800c574600 R14: ffff88807dd2d640 R15: 0000000000000000
[ 28.052887] FS: 0000000000000000(0000) GS:ffff88807dd00000(0000) knlGS:0000000000000000
[ 28.053409] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 28.053785] CR2: 000055e824c511dc CR3: 0000000008168004 CR4: 0000000000770ee0
[ 28.054255] PKRU: 55555554
[ 28.054411] Call Trace:
[ 28.054555] <IRQ>
[ 28.054678] ? watchdog_timer_fn+0x1b3/0x220
[ 28.054966] ? __pfx_watchdog_timer_fn+0x10/0x10
[ 28.055256] ? __hrtimer_run_queues+0x10d/0x2a0
[ 28.055548] ? hrtimer_interrupt+0xf8/0x230
[ 28.055807] ? __sysvec_apic_timer_interrupt+0x5e/0x130
[ 28.056141] ? sysvec_apic_timer_interrupt+0x65/0x80
[ 28.056460] </IRQ>
[ 28.056578] <TASK>
[ 28.056717] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 28.057071] ? __pv_queued_spin_lock_slowpath+0x275/0x370
[ 28.057413] _raw_spin_lock+0x29/0x30
[ 28.057635] ext4_init_inode_table+0x315/0x370
[ 28.057916] ext4_run_li_request+0xc7/0x250
[ 28.058177] ext4_lazyinit_thread.part.0+0x1cd/0x3b0
[ 28.058492] ? __pfx_ext4_lazyinit_thread+0x10/0x10
[ 28.058799] kthread+0xef/0x120
[ 28.058985] ? __pfx_kthread+0x10/0x10
[ 28.059195] ret_from_fork+0x31/0x50
[ 28.059425] ? __pfx_kthread+0x10/0x10
[ 28.059648] ret_from_fork_asm+0x1b/0x30
[ 28.059883] RIP: 0000:0x0
[ 28.060035] Code: Unable to access opcode bytes at 0xffffffffffffffd6.
[ 28.060460] RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
[ 28.060955] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 28.061418] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 28.061886] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 28.062347] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 28.062812] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 28.063291] </TASK>
QEMU: Terminated
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