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From: bugzilla-daemon@kernel.org
To: linux-f2fs-devel@lists.sourceforge.net
Subject: [f2fs-dev] [Bug 216050] f2fs_gc occupies 100% cpu
Date: Fri, 05 May 2023 23:17:28 +0000	[thread overview]
Message-ID: <bug-216050-202145-YEtOxCO9I3@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-216050-202145@https.bugzilla.kernel.org/>

https://bugzilla.kernel.org/show_bug.cgi?id=216050

--- Comment #168 from Matias (lp610mh@gmail.com) ---
Removed background_gc=sync and it happened again, i hope this message gets sent
so you could take a look, this is the journalctl log after it happens. 

Kernel: 6.3.1 with f2fs updates of 6.4-rc1



May 05 20:13:44 cachyos-x8664 kernel: INFO: task f2fs_ckpt-8:1:204 blocked for
more than 122 seconds.
May 05 20:13:44 cachyos-x8664 kernel:       Not tainted 6.3.1-1-cachyos #1
May 05 20:13:44 cachyos-x8664 kernel: "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 05 20:13:44 cachyos-x8664 kernel: task:f2fs_ckpt-8:1   state:D stack:0    
pid:204   ppid:2      flags:0x00004000
May 05 20:13:44 cachyos-x8664 kernel: Call Trace:
May 05 20:13:44 cachyos-x8664 kernel:  <TASK>
May 05 20:13:44 cachyos-x8664 kernel:  __schedule+0x441/0x17b0
May 05 20:13:44 cachyos-x8664 kernel:  ?
asm_sysvec_apic_timer_interrupt+0x1a/0x20
May 05 20:13:44 cachyos-x8664 kernel:  schedule_preempt_disabled+0x65/0xe0
May 05 20:13:44 cachyos-x8664 kernel:  rwsem_down_write_slowpath+0x22b/0x6c0
May 05 20:13:44 cachyos-x8664 kernel:  ? psi_task_switch+0x12f/0x340
May 05 20:13:44 cachyos-x8664 kernel:  ?
__pfx_issue_checkpoint_thread+0x10/0x10 [f2fs
d2333fc34706e39c1a83271e8b382b177aae887d]
May 05 20:13:44 cachyos-x8664 kernel:  down_write+0x5b/0x60
May 05 20:13:44 cachyos-x8664 kernel: 
__checkpoint_and_complete_reqs+0x7c/0x1b0 [f2fs
d2333fc34706e39c1a83271e8b382b177aae887d]
May 05 20:13:44 cachyos-x8664 kernel:  ?
__pfx_issue_checkpoint_thread+0x10/0x10 [f2fs
d2333fc34706e39c1a83271e8b382b177aae887d]
May 05 20:13:44 cachyos-x8664 kernel:  issue_checkpoint_thread+0x4c/0x110 [f2fs
d2333fc34706e39c1a83271e8b382b177aae887d]
May 05 20:13:44 cachyos-x8664 kernel:  ?
__pfx_autoremove_wake_function+0x10/0x10
May 05 20:13:44 cachyos-x8664 kernel:  kthread+0xdb/0x110
May 05 20:13:44 cachyos-x8664 kernel:  ? __pfx_kthread+0x10/0x10
May 05 20:13:44 cachyos-x8664 kernel:  ret_from_fork+0x29/0x50
May 05 20:13:44 cachyos-x8664 kernel:  </TASK>
May 05 20:13:44 cachyos-x8664 kernel: INFO: task kworker/u16:0:5392 blocked for
more than 122 seconds.
May 05 20:13:44 cachyos-x8664 kernel:       Not tainted 6.3.1-1-cachyos #1
May 05 20:13:44 cachyos-x8664 kernel: "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 05 20:13:44 cachyos-x8664 kernel: task:kworker/u16:0   state:D stack:0    
pid:5392  ppid:2      flags:0x00004000
May 05 20:13:44 cachyos-x8664 kernel: Workqueue: writeback wb_workfn
(flush-8:0)
May 05 20:13:44 cachyos-x8664 kernel: Call Trace:
May 05 20:13:44 cachyos-x8664 kernel:  <TASK>
May 05 20:13:44 cachyos-x8664 kernel:  __schedule+0x441/0x17b0
May 05 20:13:44 cachyos-x8664 kernel:  ? blk_mq_submit_bio+0x396/0x760
May 05 20:13:44 cachyos-x8664 kernel:  ? ttwu_queue_wakelist+0xef/0x110
May 05 20:13:44 cachyos-x8664 kernel:  schedule+0x5e/0xd0
May 05 20:13:44 cachyos-x8664 kernel:  schedule_timeout+0x329/0x390
May 05 20:13:44 cachyos-x8664 kernel:  ? autoremove_wake_function+0x32/0x60
May 05 20:13:44 cachyos-x8664 kernel:  wait_for_completion+0x86/0x160
May 05 20:13:44 cachyos-x8664 kernel:  f2fs_issue_checkpoint+0x11f/0x200 [f2fs
d2333fc34706e39c1a83271e8b382b177aae887d]
May 05 20:13:44 cachyos-x8664 kernel:  f2fs_balance_fs_bg+0x12e/0x3b0 [f2fs
d2333fc34706e39c1a83271e8b382b177aae887d]
May 05 20:13:44 cachyos-x8664 kernel:  f2fs_write_node_pages+0x85/0xa00 [f2fs
d2333fc34706e39c1a83271e8b382b177aae887d]
May 05 20:13:44 cachyos-x8664 kernel:  ? __pfx_ata_scsi_rw_xlat+0x10/0x10
May 05 20:13:44 cachyos-x8664 kernel:  ? ata_qc_issue+0x138/0x270
May 05 20:13:44 cachyos-x8664 kernel:  ? ata_scsi_queuecmd+0xe4/0x170
May 05 20:13:44 cachyos-x8664 kernel:  ? select_task_rq_fair+0x15d/0x2880
May 05 20:13:44 cachyos-x8664 kernel:  ? __pfx_f2fs_write_node_pages+0x10/0x10
[f2fs d2333fc34706e39c1a83271e8b382b177aae887d]
May 05 20:13:44 cachyos-x8664 kernel:  do_writepages+0x8c/0x610
May 05 20:13:44 cachyos-x8664 kernel:  ? blk_mq_do_dispatch_sched+0xa7/0x3c0
May 05 20:13:44 cachyos-x8664 kernel:  ? _flat_send_IPI_mask+0x1f/0x30
May 05 20:13:44 cachyos-x8664 kernel:  ? ttwu_queue_wakelist+0xef/0x110
May 05 20:13:44 cachyos-x8664 kernel:  ? try_to_wake_up+0xd9/0xcb0
May 05 20:13:44 cachyos-x8664 kernel:  __writeback_single_inode+0x3d/0x360
May 05 20:13:44 cachyos-x8664 kernel:  writeback_sb_inodes+0x1ed/0x530
May 05 20:13:44 cachyos-x8664 kernel:  ? __wake_up+0x8b/0xc0
May 05 20:13:44 cachyos-x8664 kernel:  __writeback_inodes_wb+0x4c/0xf0
May 05 20:13:44 cachyos-x8664 kernel:  wb_writeback+0x1fe/0x390
May 05 20:13:44 cachyos-x8664 kernel:  wb_workfn+0x412/0x600
May 05 20:13:44 cachyos-x8664 kernel:  ? __schedule+0x449/0x17b0
May 05 20:13:44 cachyos-x8664 kernel:  process_one_work+0x24b/0x460
May 05 20:13:44 cachyos-x8664 kernel:  worker_thread+0x55/0x4f0
May 05 20:13:44 cachyos-x8664 kernel:  ? __pfx_worker_thread+0x10/0x10
May 05 20:13:44 cachyos-x8664 kernel:  kthread+0xdb/0x110
May 05 20:13:44 cachyos-x8664 kernel:  ? __pfx_kthread+0x10/0x10
May 05 20:13:44 cachyos-x8664 kernel:  ret_from_fork+0x29/0x50

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  parent reply	other threads:[~2023-05-05 23:17 UTC|newest]

Thread overview: 182+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-30 11:28 [f2fs-dev] [Bug 216050] New: fsfs_gc occupies 100% cpu bugzilla-daemon
2022-05-30 11:52 ` [f2fs-dev] [Bug 216050] " bugzilla-daemon
2022-05-30 23:47 ` bugzilla-daemon
2022-05-31  0:51 ` bugzilla-daemon
2022-05-31 18:15 ` [f2fs-dev] [Bug 216050] f2fs_gc " bugzilla-daemon
2022-05-31 21:30 ` bugzilla-daemon
2022-06-01  2:24 ` bugzilla-daemon
2022-06-01  2:35 ` bugzilla-daemon
2022-06-01  2:35 ` bugzilla-daemon
2022-06-01  3:11 ` bugzilla-daemon
2022-06-01  3:19 ` bugzilla-daemon
2022-06-01  3:28 ` bugzilla-daemon
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