Bug#908216: btrfs blocked for more than 120 seconds

From	"Russell Mosemann" <rmosemann@futurefoam.com>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#908216: btrfs blocked for more than 120 seconds
Date	2019-01-26 21:10 +0100
Message-ID	<xkCr7-6R3-1@gated-at.bofh.it> (permalink)
References	<wvon0-eY-13@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Package: src:linux
Version: 4.19.12-1~bpo9+1
Severity: important
 
With the debilitating btrfs bugs in 4.19, it probably wasn't prudent to remove 4.17 and 4.18 from the repository, until 4.20 is released.
 
Jan 25 17:17:50 vhost002 kernel: INFO: task btrfs-transacti:661 blocked for more than 120 seconds.
Jan 25 17:17:50 vhost002 kernel:       Tainted: G            E     4.19.0-0.bpo.1-amd64 #1 Debian 4.19.12-1~bpo9+1
Jan 25 17:17:50 vhost002 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jan 25 17:17:50 vhost002 kernel: btrfs-transacti D    0   661      2 0x80000000
Jan 25 17:17:50 vhost002 kernel: Call Trace:
Jan 25 17:17:50 vhost002 kernel:  ? __schedule+0x3f5/0x880
Jan 25 17:17:50 vhost002 kernel:  schedule+0x32/0x80
Jan 25 17:17:50 vhost002 kernel:  btrfs_start_ordered_extent+0xed/0x120 [btrfs]
Jan 25 17:17:50 vhost002 kernel:  ? remove_wait_queue+0x60/0x60
Jan 25 17:17:50 vhost002 kernel:  btrfs_wait_ordered_range+0xa0/0x100 [btrfs]
Jan 25 17:17:50 vhost002 kernel:  __btrfs_wait_cache_io+0x46/0x1c0 [btrfs]
Jan 25 17:17:50 vhost002 kernel:  btrfs_start_dirty_block_groups+0x1ad/0x4b0 [btrfs]
Jan 25 17:17:50 vhost002 kernel:  btrfs_commit_transaction+0xc8/0x8a0 [btrfs]
Jan 25 17:17:50 vhost002 kernel:  ? start_transaction+0x8f/0x3e0 [btrfs]
Jan 25 17:17:50 vhost002 kernel:  transaction_kthread+0x157/0x180 [btrfs]
Jan 25 17:17:50 vhost002 kernel:  kthread+0xf8/0x130
Jan 25 17:17:50 vhost002 kernel:  ? btrfs_cleanup_transaction+0x500/0x500 [btrfs]
Jan 25 17:17:50 vhost002 kernel:  ? kthread_create_worker_on_cpu+0x70/0x70
Jan 25 17:17:50 vhost002 kernel:  ret_from_fork+0x35/0x40

Jan 25 17:19:51 vhost002 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jan 25 17:19:51 vhost002 kernel: btrfs-transacti D    0   661      2 0x80000000
Jan 25 17:19:51 vhost002 kernel: Call Trace:
Jan 25 17:19:51 vhost002 kernel:  ? __schedule+0x3f5/0x880
Jan 25 17:19:51 vhost002 kernel:  schedule+0x32/0x80
Jan 25 17:19:51 vhost002 kernel:  btrfs_start_ordered_extent+0xed/0x120 [btrfs]
Jan 25 17:19:51 vhost002 kernel:  ? remove_wait_queue+0x60/0x60
Jan 25 17:19:51 vhost002 kernel:  btrfs_wait_ordered_range+0xa0/0x100 [btrfs]
Jan 25 17:19:51 vhost002 kernel:  __btrfs_wait_cache_io+0x46/0x1c0 [btrfs]
Jan 25 17:19:51 vhost002 kernel:  btrfs_start_dirty_block_groups+0x1ad/0x4b0 [btrfs]
Jan 25 17:19:51 vhost002 kernel:  btrfs_commit_transaction+0xc8/0x8a0 [btrfs]
Jan 25 17:19:51 vhost002 kernel:  ? start_transaction+0x8f/0x3e0 [btrfs]
Jan 25 17:19:51 vhost002 kernel:  transaction_kthread+0x157/0x180 [btrfs]
Jan 25 17:19:51 vhost002 kernel:  kthread+0xf8/0x130
Jan 25 17:19:51 vhost002 kernel:  ? btrfs_cleanup_transaction+0x500/0x500 [btrfs]
Jan 25 17:19:51 vhost002 kernel:  ? kthread_create_worker_on_cpu+0x70/0x70
Jan 25 17:19:51 vhost002 kernel:  ret_from_fork+0x35/0x40
Jan 25 17:21:52 vhost002 kernel: INFO: task btrfs-transacti:661 blocked for more than 120 seconds.
Jan 25 17:21:52 vhost002 kernel:       Tainted: G            E     4.19.0-0.bpo.1-amd64 #1 Debian 4.19.12-1~bpo9+1
Jan 25 17:21:52 vhost002 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jan 25 17:21:52 vhost002 kernel: btrfs-transacti D    0   661      2 0x80000000
Jan 25 17:21:52 vhost002 kernel: Call Trace:
Jan 25 17:21:52 vhost002 kernel:  ? __schedule+0x3f5/0x880
Jan 25 17:21:52 vhost002 kernel:  schedule+0x32/0x80
Jan 25 17:21:52 vhost002 kernel:  btrfs_start_ordered_extent+0xed/0x120 [btrfs]
Jan 25 17:21:52 vhost002 kernel:  ? remove_wait_queue+0x60/0x60
Jan 25 17:21:52 vhost002 kernel:  btrfs_wait_ordered_range+0xa0/0x100 [btrfs]
Jan 25 17:21:52 vhost002 kernel:  __btrfs_wait_cache_io+0x46/0x1c0 [btrfs]
Jan 25 17:21:52 vhost002 kernel:  btrfs_start_dirty_block_groups+0x1ad/0x4b0 [btrfs]
Jan 25 17:21:52 vhost002 kernel:  btrfs_commit_transaction+0xc8/0x8a0 [btrfs]
Jan 25 17:21:52 vhost002 kernel:  ? start_transaction+0x8f/0x3e0 [btrfs]
Jan 25 17:21:52 vhost002 kernel:  transaction_kthread+0x157/0x180 [btrfs]
Jan 25 17:21:52 vhost002 kernel:  kthread+0xf8/0x130
Jan 25 17:21:52 vhost002 kernel:  ? btrfs_cleanup_transaction+0x500/0x500 [btrfs]
Jan 25 17:21:52 vhost002 kernel:  ? kthread_create_worker_on_cpu+0x70/0x70
Jan 25 17:21:52 vhost002 kernel:  ret_from_fork+0x35/0x40

Jan 25 17:23:53 vhost002 kernel: INFO: task btrfs-transacti:661 blocked for more than 120 seconds.
Jan 25 17:23:53 vhost002 kernel:       Tainted: G            E     4.19.0-0.bpo.1-amd64 #1 Debian 4.19.12-1~bpo9+1
Jan 25 17:23:53 vhost002 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jan 25 17:23:53 vhost002 kernel: btrfs-transacti D    0   661      2 0x80000000
Jan 25 17:23:53 vhost002 kernel: Call Trace:
Jan 25 17:23:53 vhost002 kernel:  ? __schedule+0x3f5/0x880
Jan 25 17:23:53 vhost002 kernel:  schedule+0x32/0x80
Jan 25 17:23:53 vhost002 kernel:  btrfs_start_ordered_extent+0xed/0x120 [btrfs]
Jan 25 17:23:53 vhost002 kernel:  ? remove_wait_queue+0x60/0x60
Jan 25 17:23:53 vhost002 kernel:  btrfs_wait_ordered_range+0xa0/0x100 [btrfs]
Jan 25 17:23:53 vhost002 kernel:  __btrfs_wait_cache_io+0x46/0x1c0 [btrfs]
Jan 25 17:23:53 vhost002 kernel:  btrfs_start_dirty_block_groups+0x1ad/0x4b0 [btrfs]
Jan 25 17:23:53 vhost002 kernel:  btrfs_commit_transaction+0xc8/0x8a0 [btrfs]
Jan 25 17:23:53 vhost002 kernel:  ? start_transaction+0x8f/0x3e0 [btrfs]
Jan 25 17:23:53 vhost002 kernel:  transaction_kthread+0x157/0x180 [btrfs]
Jan 25 17:23:53 vhost002 kernel:  kthread+0xf8/0x130
Jan 25 17:23:53 vhost002 kernel:  ? btrfs_cleanup_transaction+0x500/0x500 [btrfs]
Jan 25 17:23:53 vhost002 kernel:  ? kthread_create_worker_on_cpu+0x70/0x70
Jan 25 17:23:53 vhost002 kernel:  ret_from_fork+0x35/0x40
Jan 25 17:25:54 vhost002 kernel: INFO: task btrfs-transacti:661 blocked for more than 120 seconds.
Jan 25 17:25:54 vhost002 kernel:       Tainted: G            E     4.19.0-0.bpo.1-amd64 #1 Debian 4.19.12-1~bpo9+1
Jan 25 17:25:54 vhost002 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jan 25 17:25:54 vhost002 kernel: btrfs-transacti D    0   661      2 0x80000000
Jan 25 17:25:54 vhost002 kernel: Call Trace:
Jan 25 17:25:54 vhost002 kernel:  ? __schedule+0x3f5/0x880
Jan 25 17:25:54 vhost002 kernel:  schedule+0x32/0x80
Jan 25 17:25:54 vhost002 kernel:  btrfs_start_ordered_extent+0xed/0x120 [btrfs]
Jan 25 17:25:54 vhost002 kernel:  ? remove_wait_queue+0x60/0x60
Jan 25 17:25:54 vhost002 kernel:  btrfs_wait_ordered_range+0xa0/0x100 [btrfs]
Jan 25 17:25:54 vhost002 kernel:  __btrfs_wait_cache_io+0x46/0x1c0 [btrfs]
Jan 25 17:25:54 vhost002 kernel:  btrfs_start_dirty_block_groups+0x1ad/0x4b0 [btrfs]
Jan 25 17:25:54 vhost002 kernel:  btrfs_commit_transaction+0xc8/0x8a0 [btrfs]
Jan 25 17:25:54 vhost002 kernel:  ? start_transaction+0x8f/0x3e0 [btrfs]
Jan 25 17:25:54 vhost002 kernel:  transaction_kthread+0x157/0x180 [btrfs]
Jan 25 17:25:54 vhost002 kernel:  kthread+0xf8/0x130
Jan 25 17:25:54 vhost002 kernel:  ? btrfs_cleanup_transaction+0x500/0x500 [btrfs]
Jan 25 17:25:54 vhost002 kernel:  ? kthread_create_worker_on_cpu+0x70/0x70
Jan 25 17:25:54 vhost002 kernel:  ret_from_fork+0x35/0x40

Jan 25 17:27:54 vhost002 kernel: INFO: task btrfs-transacti:661 blocked for more than 120 seconds.
Jan 25 17:27:54 vhost002 kernel:       Tainted: G            E     4.19.0-0.bpo.1-amd64 #1 Debian 4.19.12-1~bpo9+1
Jan 25 17:27:54 vhost002 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jan 25 17:27:54 vhost002 kernel: btrfs-transacti D    0   661      2 0x80000000
Jan 25 17:27:54 vhost002 kernel: Call Trace:
Jan 25 17:27:54 vhost002 kernel:  ? __schedule+0x3f5/0x880
Jan 25 17:27:54 vhost002 kernel:  schedule+0x32/0x80
Jan 25 17:27:54 vhost002 kernel:  btrfs_start_ordered_extent+0xed/0x120 [btrfs]
Jan 25 17:27:54 vhost002 kernel:  ? remove_wait_queue+0x60/0x60
Jan 25 17:27:54 vhost002 kernel:  btrfs_wait_ordered_range+0xa0/0x100 [btrfs]
Jan 25 17:27:54 vhost002 kernel:  __btrfs_wait_cache_io+0x46/0x1c0 [btrfs]
Jan 25 17:27:54 vhost002 kernel:  btrfs_start_dirty_block_groups+0x1ad/0x4b0 [btrfs]
Jan 25 17:27:54 vhost002 kernel:  btrfs_commit_transaction+0xc8/0x8a0 [btrfs]
Jan 25 17:27:54 vhost002 kernel:  ? start_transaction+0x8f/0x3e0 [btrfs]
Jan 25 17:27:54 vhost002 kernel:  transaction_kthread+0x157/0x180 [btrfs]
Jan 25 17:27:54 vhost002 kernel:  kthread+0xf8/0x130
Jan 25 17:27:54 vhost002 kernel:  ? btrfs_cleanup_transaction+0x500/0x500 [btrfs]
Jan 25 17:27:54 vhost002 kernel:  ? kthread_create_worker_on_cpu+0x70/0x70
Jan 25 17:27:54 vhost002 kernel:  ret_from_fork+0x35/0x40
Jan 25 17:29:55 vhost002 kernel: INFO: task btrfs-transacti:661 blocked for more than 120 seconds.
Jan 25 17:29:55 vhost002 kernel:       Tainted: G            E     4.19.0-0.bpo.1-amd64 #1 Debian 4.19.12-1~bpo9+1
Jan 25 17:29:55 vhost002 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jan 25 17:29:55 vhost002 kernel: btrfs-transacti D    0   661      2 0x80000000
Jan 25 17:29:55 vhost002 kernel: Call Trace:
Jan 25 17:29:55 vhost002 kernel:  ? __schedule+0x3f5/0x880
Jan 25 17:29:55 vhost002 kernel:  schedule+0x32/0x80
Jan 25 17:29:55 vhost002 kernel:  btrfs_start_ordered_extent+0xed/0x120 [btrfs]
Jan 25 17:29:55 vhost002 kernel:  ? remove_wait_queue+0x60/0x60
Jan 25 17:29:55 vhost002 kernel:  btrfs_wait_ordered_range+0xa0/0x100 [btrfs]
Jan 25 17:29:55 vhost002 kernel:  __btrfs_wait_cache_io+0x46/0x1c0 [btrfs]
Jan 25 17:29:55 vhost002 kernel:  btrfs_start_dirty_block_groups+0x1ad/0x4b0 [btrfs]
Jan 25 17:29:55 vhost002 kernel:  btrfs_commit_transaction+0xc8/0x8a0 [btrfs]
Jan 25 17:29:55 vhost002 kernel:  ? start_transaction+0x8f/0x3e0 [btrfs]
Jan 25 17:29:55 vhost002 kernel:  transaction_kthread+0x157/0x180 [btrfs]
Jan 25 17:29:55 vhost002 kernel:  kthread+0xf8/0x130
Jan 25 17:29:55 vhost002 kernel:  ? btrfs_cleanup_transaction+0x500/0x500 [btrfs]
Jan 25 17:29:55 vhost002 kernel:  ? kthread_create_worker_on_cpu+0x70/0x70
Jan 25 17:29:55 vhost002 kernel:  ret_from_fork+0x35/0x40
Jan 25 17:31:56 vhost002 kernel: INFO: task btrfs-transacti:661 blocked for more than 120 seconds.
Jan 25 17:31:56 vhost002 kernel:       Tainted: G            E     4.19.0-0.bpo.1-amd64 #1 Debian 4.19.12-1~bpo9+1
Jan 25 17:31:56 vhost002 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jan 25 17:31:56 vhost002 kernel: btrfs-transacti D    0   661      2 0x80000000
Jan 25 17:31:56 vhost002 kernel: Call Trace:
Jan 25 17:31:56 vhost002 kernel:  ? __schedule+0x3f5/0x880
Jan 25 17:31:56 vhost002 kernel:  schedule+0x32/0x80
Jan 25 17:31:56 vhost002 kernel:  btrfs_start_ordered_extent+0xed/0x120 [btrfs]
Jan 25 17:31:56 vhost002 kernel:  ? remove_wait_queue+0x60/0x60
Jan 25 17:31:56 vhost002 kernel:  btrfs_wait_ordered_range+0xa0/0x100 [btrfs]
Jan 25 17:31:56 vhost002 kernel:  __btrfs_wait_cache_io+0x46/0x1c0 [btrfs]
Jan 25 17:31:56 vhost002 kernel:  btrfs_start_dirty_block_groups+0x1ad/0x4b0 [btrfs]
Jan 25 17:31:56 vhost002 kernel:  btrfs_commit_transaction+0xc8/0x8a0 [btrfs]
Jan 25 17:31:56 vhost002 kernel:  ? start_transaction+0x8f/0x3e0 [btrfs]
Jan 25 17:31:56 vhost002 kernel:  transaction_kthread+0x157/0x180 [btrfs]
Jan 25 17:31:56 vhost002 kernel:  kthread+0xf8/0x130
Jan 25 17:31:56 vhost002 kernel:  ? btrfs_cleanup_transaction+0x500/0x500 [btrfs]
Jan 25 17:31:56 vhost002 kernel:  ? kthread_create_worker_on_cpu+0x70/0x70
Jan 25 17:31:56 vhost002 kernel:  ret_from_fork+0x35/0x40
Jan 25 17:33:57 vhost002 kernel: INFO: task btrfs-transacti:661 blocked for more than 120 seconds.
Jan 25 17:33:57 vhost002 kernel:       Tainted: G            E     4.19.0-0.bpo.1-amd64 #1 Debian 4.19.12-1~bpo9+1
Jan 25 17:33:57 vhost002 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jan 25 17:33:57 vhost002 kernel: btrfs-transacti D    0   661      2 0x80000000
Jan 25 17:33:57 vhost002 kernel: Call Trace:
Jan 25 17:33:57 vhost002 kernel:  ? __schedule+0x3f5/0x880
Jan 25 17:33:57 vhost002 kernel:  schedule+0x32/0x80
Jan 25 17:33:57 vhost002 kernel:  btrfs_start_ordered_extent+0xed/0x120 [btrfs]
Jan 25 17:33:57 vhost002 kernel:  ? remove_wait_queue+0x60/0x60
Jan 25 17:33:57 vhost002 kernel:  btrfs_wait_ordered_range+0xa0/0x100 [btrfs]
Jan 25 17:33:57 vhost002 kernel:  __btrfs_wait_cache_io+0x46/0x1c0 [btrfs]
Jan 25 17:33:57 vhost002 kernel:  btrfs_start_dirty_block_groups+0x1ad/0x4b0 [btrfs]
Jan 25 17:33:57 vhost002 kernel:  btrfs_commit_transaction+0xc8/0x8a0 [btrfs]
Jan 25 17:33:57 vhost002 kernel:  ? start_transaction+0x8f/0x3e0 [btrfs]
Jan 25 17:33:57 vhost002 kernel:  transaction_kthread+0x157/0x180 [btrfs]
Jan 25 17:33:57 vhost002 kernel:  kthread+0xf8/0x130
Jan 25 17:33:57 vhost002 kernel:  ? btrfs_cleanup_transaction+0x500/0x500 [btrfs]
Jan 25 17:33:57 vhost002 kernel:  ? kthread_create_worker_on_cpu+0x70/0x70
Jan 25 17:33:57 vhost002 kernel:  ret_from_fork+0x35/0x40
Jan 25 17:35:58 vhost002 kernel: INFO: task btrfs-transacti:661 blocked for more than 120 seconds.
Jan 25 17:35:58 vhost002 kernel:       Tainted: G            E     4.19.0-0.bpo.1-amd64 #1 Debian 4.19.12-1~bpo9+1
Jan 25 17:35:58 vhost002 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jan 25 17:35:58 vhost002 kernel: btrfs-transacti D    0   661      2 0x80000000
Jan 25 17:35:58 vhost002 kernel: Call Trace:
Jan 25 17:35:58 vhost002 kernel:  ? __schedule+0x3f5/0x880
Jan 25 17:35:58 vhost002 kernel:  schedule+0x32/0x80
Jan 25 17:35:58 vhost002 kernel:  btrfs_start_ordered_extent+0xed/0x120 [btrfs]
Jan 25 17:35:58 vhost002 kernel:  ? remove_wait_queue+0x60/0x60
Jan 25 17:35:58 vhost002 kernel:  btrfs_wait_ordered_range+0xa0/0x100 [btrfs]
Jan 25 17:35:58 vhost002 kernel:  __btrfs_wait_cache_io+0x46/0x1c0 [btrfs]
Jan 25 17:35:58 vhost002 kernel:  btrfs_start_dirty_block_groups+0x1ad/0x4b0 [btrfs]
Jan 25 17:35:58 vhost002 kernel:  btrfs_commit_transaction+0xc8/0x8a0 [btrfs]
Jan 25 17:35:58 vhost002 kernel:  ? start_transaction+0x8f/0x3e0 [btrfs]
Jan 25 17:35:58 vhost002 kernel:  transaction_kthread+0x157/0x180 [btrfs]
Jan 25 17:35:58 vhost002 kernel:  kthread+0xf8/0x130
Jan 25 17:35:58 vhost002 kernel:  ? btrfs_cleanup_transaction+0x500/0x500 [btrfs]
Jan 25 17:35:58 vhost002 kernel:  ? kthread_create_worker_on_cpu+0x70/0x70
Jan 25 17:35:58 vhost002 kernel:  ret_from_fork+0x35/0x40

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Bug#908216: btrfs blocked for more than 120 seconds "Russell Mosemann" <rmosemann@futurefoam.com> - 2019-01-26 21:10 +0100

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