* Deadlock after upgrade to 4.1
@ 2015-12-26 2:00 Roman Mamedov
2015-12-26 4:04 ` Duncan
2015-12-26 4:34 ` Chris Murphy
0 siblings, 2 replies; 6+ messages in thread
From: Roman Mamedov @ 2015-12-26 2:00 UTC (permalink / raw)
To: linux-btrfs
[-- Attachment #1: Type: text/plain, Size: 23959 bytes --]
Hello,
On the first or second night after upgrade from a 3.18.21 kernel to 4.1.15,
during concurrent heavy file operations (pruning old backups), I got into this
deadlock(?).
After these messages any attempt to write to the affected filesystem would hang
indefinitely, system load went to ~37, and there seemed to be no HDD activity.
It did not clear up in about 40 minutes, I ended up forcibly rebooting the machine.
Dunno how useful this is as a "new" bugreport, but maybe this looks familiar to
someone, and perhaps this is something that is already fixed in 4.2/4.3?
[Sat Dec 26 04:58:14 2015] INFO: task kworker/u16:4:2786 blocked for more than 120 seconds.
[Sat Dec 26 04:58:14 2015] Not tainted 4.1.15-rm2+ #100
[Sat Dec 26 04:58:14 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat Dec 26 04:58:14 2015] kworker/u16:4 D ffff880002d7f968 0 2786 2 0x00000000
[Sat Dec 26 04:58:14 2015] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[Sat Dec 26 04:58:14 2015] ffff880002d7f968 ffff8807faf01930 ffff88010c76e4c0 ffff880002d7f988
[Sat Dec 26 04:58:14 2015] ffff880002d80000 ffff88013ad77aa8 ffff88010c76e4c0 ffff88010c76e4c0
[Sat Dec 26 04:58:14 2015] ffff880002d7f9b8 ffff880002d7f988 ffffffff8159bc27 ffff88013ad77aa8
[Sat Dec 26 04:58:14 2015] Call Trace:
[Sat Dec 26 04:58:14 2015] [<ffffffff8159bc27>] schedule+0x37/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffffa036fc75>] btrfs_tree_read_lock+0xc5/0x120 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff810b6c50>] ? wait_woken+0x90/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffffa030b2bb>] btrfs_read_lock_root_node+0x3b/0x50 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0310509>] btrfs_search_slot+0x749/0xa30 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff810ac180>] ? enqueue_task_fair+0x1190/0x1400
[Sat Dec 26 04:58:14 2015] [<ffffffffa03296c7>] btrfs_lookup_file_extent+0x37/0x40 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0349bc7>] __btrfs_drop_extents+0x177/0xeb0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0353bad>] ? __set_extent_bit+0x14d/0x570 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff811bf2fb>] ? kmem_cache_alloc+0x12b/0x140
[Sat Dec 26 04:58:14 2015] [<ffffffffa030afba>] ? btrfs_alloc_path+0x1a/0x20 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa03391b5>] insert_reserved_file_extent.constprop.63+0xa5/0x310 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa033f7e9>] btrfs_finish_ordered_io+0x2e9/0x5f0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff810acf00>] ? dequeue_task_fair+0xb10/0xca0
[Sat Dec 26 04:58:14 2015] [<ffffffffa033fdb5>] finish_ordered_fn+0x15/0x20 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0367bb1>] normal_work_helper+0xc1/0x270 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0367ef2>] btrfs_endio_write_helper+0x12/0x20 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff8108e881>] process_one_work+0x151/0x440
[Sat Dec 26 04:58:14 2015] [<ffffffff8108f3f3>] worker_thread+0x73/0x550
[Sat Dec 26 04:58:14 2015] [<ffffffff8108f380>] ? rescuer_thread+0x380/0x380
[Sat Dec 26 04:58:14 2015] [<ffffffff810949ab>] kthread+0xdb/0x100
[Sat Dec 26 04:58:14 2015] [<ffffffff810948d0>] ? kthread_create_on_node+0x190/0x190
[Sat Dec 26 04:58:14 2015] [<ffffffff815a0722>] ret_from_fork+0x42/0x70
[Sat Dec 26 04:58:14 2015] [<ffffffff810948d0>] ? kthread_create_on_node+0x190/0x190
[Sat Dec 26 04:58:14 2015] INFO: task rdiff-backup:3517 blocked for more than 120 seconds.
[Sat Dec 26 04:58:14 2015] Not tainted 4.1.15-rm2+ #100
[Sat Dec 26 04:58:14 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat Dec 26 04:58:14 2015] rdiff-backup D ffff880101c0f808 0 3517 3515 0x00000000
[Sat Dec 26 04:58:14 2015] ffff880101c0f808 ffff8807faf01930 ffff880101d4b260 ffff880101c0f828
[Sat Dec 26 04:58:14 2015] ffff880101c10000 ffff8801390af648 ffff8801390af660 ffff880101c0f858
[Sat Dec 26 04:58:14 2015] ffff8801390af640 ffff880101c0f828 ffffffff8159bc27 ffff8801390af648
[Sat Dec 26 04:58:14 2015] Call Trace:
[Sat Dec 26 04:58:14 2015] [<ffffffff8159bc27>] schedule+0x37/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffffa036ffb5>] btrfs_tree_lock+0x55/0x1d0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff810b6c50>] ? wait_woken+0x90/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffffa030b30b>] btrfs_lock_root_node+0x3b/0x50 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa03106e1>] btrfs_search_slot+0x921/0xa30 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa031222b>] btrfs_insert_empty_items+0x7b/0xe0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0359893>] ? free_extent_buffer+0x53/0xb0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0374dc7>] overwrite_item+0xe7/0x5e0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa037709b>] log_dir_items+0x4eb/0x570 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0374755>] ? copy_items+0x605/0xb90 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0377195>] log_directory_changes+0x75/0xa0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa037794c>] btrfs_log_inode+0x78c/0x950 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0378519>] btrfs_log_inode_parent+0x969/0xc90 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa03797ea>] btrfs_log_dentry_safe+0x6a/0x90 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa034c5b7>] btrfs_sync_file+0x1b7/0x340 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff8120b236>] vfs_fsync_range+0x46/0xb0
[Sat Dec 26 04:58:14 2015] [<ffffffff811d73fc>] ? do_sys_open+0x1ac/0x230
[Sat Dec 26 04:58:14 2015] [<ffffffff8120b304>] do_fsync+0x44/0x70
[Sat Dec 26 04:58:14 2015] [<ffffffff8120b5b0>] SyS_fsync+0x10/0x20
[Sat Dec 26 04:58:14 2015] [<ffffffff815a02f2>] system_call_fastpath+0x16/0x75
[Sat Dec 26 04:58:14 2015] INFO: task rdiff-backup:3520 blocked for more than 120 seconds.
[Sat Dec 26 04:58:14 2015] Not tainted 4.1.15-rm2+ #100
[Sat Dec 26 04:58:14 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat Dec 26 04:58:14 2015] rdiff-backup D ffff88010398bd08 0 3520 3518 0x00000000
[Sat Dec 26 04:58:14 2015] ffff88010398bd08 ffff8807faf03260 ffff880102efe4c0 ffff88010398bce8
[Sat Dec 26 04:58:14 2015] ffff88010398c000 ffff88010398be48 7fffffffffffffff ffff880102efe4c0
[Sat Dec 26 04:58:14 2015] ffff8807f8f4e068 ffff88010398bd28 ffffffff8159bc27 0000000000000200
[Sat Dec 26 04:58:14 2015] Call Trace:
[Sat Dec 26 04:58:14 2015] [<ffffffff8159bc27>] schedule+0x37/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffff8159ee04>] schedule_timeout+0x204/0x280
[Sat Dec 26 04:58:14 2015] [<ffffffff8108ca7a>] ? __queue_delayed_work+0xba/0x1b0
[Sat Dec 26 04:58:14 2015] [<ffffffff8108ce51>] ? try_to_grab_pending+0xc1/0x160
[Sat Dec 26 04:58:14 2015] [<ffffffff8159d254>] wait_for_completion+0x104/0x160
[Sat Dec 26 04:58:14 2015] [<ffffffff810a1f90>] ? wake_up_state+0x20/0x20
[Sat Dec 26 04:58:14 2015] [<ffffffff8120b0f0>] ? SyS_tee+0x3f0/0x3f0
[Sat Dec 26 04:58:14 2015] [<ffffffff812038a8>] sync_inodes_sb+0xa8/0x1c0
[Sat Dec 26 04:58:14 2015] [<ffffffff8120b0f0>] ? SyS_tee+0x3f0/0x3f0
[Sat Dec 26 04:58:14 2015] [<ffffffff8120b109>] sync_inodes_one_sb+0x19/0x20
[Sat Dec 26 04:58:14 2015] [<ffffffff811dbc10>] iterate_supers+0xb0/0x110
[Sat Dec 26 04:58:14 2015] [<ffffffff8120b455>] sys_sync+0x35/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffff815a02f2>] system_call_fastpath+0x16/0x75
[Sat Dec 26 04:58:14 2015] INFO: task rdiff-backup:3523 blocked for more than 120 seconds.
[Sat Dec 26 04:58:14 2015] Not tainted 4.1.15-rm2+ #100
[Sat Dec 26 04:58:14 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat Dec 26 04:58:14 2015] rdiff-backup D ffff880784ea3cc8 0 3523 3521 0x00000000
[Sat Dec 26 04:58:14 2015] ffff880784ea3cc8 ffff8807faf18000 ffff880102f04b90 ffff880784ea3ce8
[Sat Dec 26 04:58:14 2015] ffff880784ea4000 ffff8807f8f4ea98 ffff8807f8f4eac0 ffff88000365d800
[Sat Dec 26 04:58:14 2015] ffff8807f8f4e800 ffff880784ea3ce8 ffffffff8159bc27 ffff8807f8f4ea98
[Sat Dec 26 04:58:14 2015] Call Trace:
[Sat Dec 26 04:58:14 2015] [<ffffffff8159bc27>] schedule+0x37/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffffa0371d56>] wait_for_writer.isra.15+0xa6/0xc0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff810b6c50>] ? wait_woken+0x90/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffffa0378938>] btrfs_sync_log+0xf8/0xa70 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa03797f5>] ? btrfs_log_dentry_safe+0x75/0x90 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa034c6ea>] btrfs_sync_file+0x2ea/0x340 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff8120b236>] vfs_fsync_range+0x46/0xb0
[Sat Dec 26 04:58:14 2015] [<ffffffff811d73fc>] ? do_sys_open+0x1ac/0x230
[Sat Dec 26 04:58:14 2015] [<ffffffff8120b304>] do_fsync+0x44/0x70
[Sat Dec 26 04:58:14 2015] [<ffffffff8120b5b0>] SyS_fsync+0x10/0x20
[Sat Dec 26 04:58:14 2015] [<ffffffff815a02f2>] system_call_fastpath+0x16/0x75
[Sat Dec 26 04:58:14 2015] INFO: task rdiff-backup:3526 blocked for more than 120 seconds.
[Sat Dec 26 04:58:14 2015] Not tainted 4.1.15-rm2+ #100
[Sat Dec 26 04:58:14 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat Dec 26 04:58:14 2015] rdiff-backup D ffff880102fcb6c8 0 3526 3524 0x00000000
[Sat Dec 26 04:58:14 2015] ffff880102fcb6c8 ffff8807faf00000 ffff88002d0d64c0 ffff880102fcb6e8
[Sat Dec 26 04:58:14 2015] ffff880102fcc000 ffff88013ad77aa8 ffff88002d0d64c0 ffff88002d0d64c0
[Sat Dec 26 04:58:14 2015] ffff880102fcb718 ffff880102fcb6e8 ffffffff8159bc27 ffff88013ad77aa8
[Sat Dec 26 04:58:14 2015] Call Trace:
[Sat Dec 26 04:58:14 2015] [<ffffffff8159bc27>] schedule+0x37/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffffa036fc75>] btrfs_tree_read_lock+0xc5/0x120 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff810b6c50>] ? wait_woken+0x90/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffffa030b2bb>] btrfs_read_lock_root_node+0x3b/0x50 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0310509>] btrfs_search_slot+0x749/0xa30 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff8130381b>] ? __sg_alloc_table+0x7b/0x170
[Sat Dec 26 04:58:14 2015] [<ffffffffa03296c7>] btrfs_lookup_file_extent+0x37/0x40 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa033b24e>] btrfs_get_extent+0x15e/0xa80 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa035380e>] ? insert_state+0xae/0x160 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0357438>] __do_readpage+0x188/0x7b0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0354c3b>] ? lock_extent_bits+0x7b/0x230 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa033b0f0>] ? btrfs_real_readdir+0x5d0/0x5d0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0351c68>] ? btrfs_lookup_ordered_range+0x178/0x1b0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0357ddf>] __extent_readpages.constprop.38+0x29f/0x2c0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff81169fce>] ? __add_to_page_cache_locked+0x19e/0x2a0
[Sat Dec 26 04:58:14 2015] [<ffffffffa033b0f0>] ? btrfs_real_readdir+0x5d0/0x5d0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0358edd>] extent_readpages+0x17d/0x1e0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa033b0f0>] ? btrfs_real_readdir+0x5d0/0x5d0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0337f2f>] btrfs_readpages+0x1f/0x30 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff811766dc>] __do_page_cache_readahead+0x18c/0x200
[Sat Dec 26 04:58:14 2015] [<ffffffff81176839>] ondemand_readahead+0xe9/0x270
[Sat Dec 26 04:58:14 2015] [<ffffffffa032d3e1>] ? btrfs_congested_fn+0x31/0xa0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff81176a41>] page_cache_async_readahead+0x81/0xb0
[Sat Dec 26 04:58:14 2015] [<ffffffff8116af97>] generic_file_read_iter+0x407/0x5d0
[Sat Dec 26 04:58:14 2015] [<ffffffff810a91e9>] ? set_next_entity+0xb9/0x4c0
[Sat Dec 26 04:58:14 2015] [<ffffffff811d7b0e>] __vfs_read+0xae/0xe0
[Sat Dec 26 04:58:14 2015] [<ffffffff811d8195>] vfs_read+0x95/0x140
[Sat Dec 26 04:58:14 2015] [<ffffffff811d907f>] SyS_read+0x4f/0xc0
[Sat Dec 26 04:58:14 2015] [<ffffffff815a02f2>] system_call_fastpath+0x16/0x75
[Sat Dec 26 04:58:14 2015] INFO: task rdiff-backup:3529 blocked for more than 120 seconds.
[Sat Dec 26 04:58:14 2015] Not tainted 4.1.15-rm2+ #100
[Sat Dec 26 04:58:14 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat Dec 26 04:58:14 2015] rdiff-backup D ffff8801038abcb8 0 3529 3527 0x00000000
[Sat Dec 26 04:58:14 2015] ffff8801038abcb8 ffff8807faf00000 ffff880107e39930 ffff8801038abcd8
[Sat Dec 26 04:58:14 2015] ffff8801038ac000 0000000000000009 ffff8807f8f4ea98 ffff8807f8f4eaf0
[Sat Dec 26 04:58:14 2015] ffff8807f8f4eb24 ffff8801038abcd8 ffffffff8159bc27 0000000000000009
[Sat Dec 26 04:58:14 2015] Call Trace:
[Sat Dec 26 04:58:14 2015] [<ffffffff8159bc27>] schedule+0x37/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffffa0371c9c>] wait_log_commit.isra.14+0xdc/0xf0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff810b6c50>] ? wait_woken+0x90/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffffa0378c9b>] btrfs_sync_log+0x45b/0xa70 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa03797f5>] ? btrfs_log_dentry_safe+0x75/0x90 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa034c6ea>] btrfs_sync_file+0x2ea/0x340 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff8120b236>] vfs_fsync_range+0x46/0xb0
[Sat Dec 26 04:58:14 2015] [<ffffffff811d73fc>] ? do_sys_open+0x1ac/0x230
[Sat Dec 26 04:58:14 2015] [<ffffffff8120b304>] do_fsync+0x44/0x70
[Sat Dec 26 04:58:14 2015] [<ffffffff8120b5b0>] SyS_fsync+0x10/0x20
[Sat Dec 26 04:58:14 2015] [<ffffffff815a02f2>] system_call_fastpath+0x16/0x75
[Sat Dec 26 04:58:14 2015] INFO: task rdiff-backup:3534 blocked for more than 120 seconds.
[Sat Dec 26 04:58:14 2015] Not tainted 4.1.15-rm2+ #100
[Sat Dec 26 04:58:14 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat Dec 26 04:58:14 2015] rdiff-backup D ffff88010389b9d8 0 3534 3530 0x00000000
[Sat Dec 26 04:58:14 2015] ffff88010389b9d8 ffff8807faf00000 ffff880102f064c0 ffff88010389b9f8
[Sat Dec 26 04:58:14 2015] ffff88010389c000 ffff88013ad77aa8 ffff880102f064c0 ffff880102f064c0
[Sat Dec 26 04:58:14 2015] ffff88010389ba28 ffff88010389b9f8 ffffffff8159bc27 ffff88013ad77aa8
[Sat Dec 26 04:58:14 2015] Call Trace:
[Sat Dec 26 04:58:14 2015] [<ffffffff8159bc27>] schedule+0x37/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffffa036fc75>] btrfs_tree_read_lock+0xc5/0x120 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff810b6c50>] ? wait_woken+0x90/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffffa030b2bb>] btrfs_read_lock_root_node+0x3b/0x50 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0310509>] btrfs_search_slot+0x749/0xa30 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff811bf5d0>] ? __slab_free.isra.68+0x130/0x1b0
[Sat Dec 26 04:58:14 2015] [<ffffffffa03287e4>] btrfs_lookup_dir_item+0x74/0xb0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa03432f6>] btrfs_lookup_dentry+0xa6/0x530 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff811f2c03>] ? __d_alloc+0x123/0x180
[Sat Dec 26 04:58:14 2015] [<ffffffffa0343796>] btrfs_lookup+0x16/0x40 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff811e1f6d>] lookup_real+0x1d/0x70
[Sat Dec 26 04:58:14 2015] [<ffffffff811e2a98>] __lookup_hash+0x38/0x50
[Sat Dec 26 04:58:14 2015] [<ffffffff811e874d>] path_lookupat+0x83d/0xd30
[Sat Dec 26 04:58:14 2015] [<ffffffff811bf1fd>] ? kmem_cache_alloc+0x2d/0x140
[Sat Dec 26 04:58:14 2015] [<ffffffff811e9701>] ? getname_flags+0x61/0x220
[Sat Dec 26 04:58:14 2015] [<ffffffff811e8c70>] filename_lookup+0x30/0xc0
[Sat Dec 26 04:58:14 2015] [<ffffffff811eaa1e>] user_path_at_empty+0x5e/0xb0
[Sat Dec 26 04:58:14 2015] [<ffffffff8110c8e2>] ? from_kgid_munged+0x12/0x20
[Sat Dec 26 04:58:14 2015] [<ffffffff811dd552>] ? cp_new_stat+0x142/0x160
[Sat Dec 26 04:58:14 2015] [<ffffffff811eaa81>] user_path_at+0x11/0x20
[Sat Dec 26 04:58:14 2015] [<ffffffff811dd0f9>] vfs_fstatat+0x49/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffff811dd5d2>] SYSC_newlstat+0x22/0x40
[Sat Dec 26 04:58:14 2015] [<ffffffff811dd82e>] SyS_newlstat+0xe/0x10
[Sat Dec 26 04:58:14 2015] [<ffffffff815a02f2>] system_call_fastpath+0x16/0x75
[Sat Dec 26 04:58:14 2015] INFO: task rdiff-backup:3535 blocked for more than 120 seconds.
[Sat Dec 26 04:58:14 2015] Not tainted 4.1.15-rm2+ #100
[Sat Dec 26 04:58:14 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat Dec 26 04:58:14 2015] rdiff-backup D ffff880102fcf6c8 0 3535 3531 0x00000000
[Sat Dec 26 04:58:14 2015] ffff880102fcf6c8 ffffffff81a13540 ffff880101d4e4c0 ffff880102fcf6e8
[Sat Dec 26 04:58:14 2015] ffff880102fd0000 ffff88013ad77aa8 ffff880101d4e4c0 ffff880101d4e4c0
[Sat Dec 26 04:58:14 2015] ffff880102fcf718 ffff880102fcf6e8 ffffffff8159bc27 ffff88013ad77aa8
[Sat Dec 26 04:58:14 2015] Call Trace:
[Sat Dec 26 04:58:14 2015] [<ffffffff8159bc27>] schedule+0x37/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffffa036fc75>] btrfs_tree_read_lock+0xc5/0x120 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff810b6c50>] ? wait_woken+0x90/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffffa030b2bb>] btrfs_read_lock_root_node+0x3b/0x50 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0310509>] btrfs_search_slot+0x749/0xa30 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa03296c7>] btrfs_lookup_file_extent+0x37/0x40 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa033b24e>] btrfs_get_extent+0x15e/0xa80 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa035380e>] ? insert_state+0xae/0x160 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0357438>] __do_readpage+0x188/0x7b0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0354c3b>] ? lock_extent_bits+0x7b/0x230 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa033b0f0>] ? btrfs_real_readdir+0x5d0/0x5d0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0351c68>] ? btrfs_lookup_ordered_range+0x178/0x1b0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0357ddf>] __extent_readpages.constprop.38+0x29f/0x2c0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff81169fce>] ? __add_to_page_cache_locked+0x19e/0x2a0
[Sat Dec 26 04:58:14 2015] [<ffffffffa033b0f0>] ? btrfs_real_readdir+0x5d0/0x5d0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0358edd>] extent_readpages+0x17d/0x1e0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa033b0f0>] ? btrfs_real_readdir+0x5d0/0x5d0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0337f2f>] btrfs_readpages+0x1f/0x30 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff811766dc>] __do_page_cache_readahead+0x18c/0x200
[Sat Dec 26 04:58:14 2015] [<ffffffff81176839>] ondemand_readahead+0xe9/0x270
[Sat Dec 26 04:58:14 2015] [<ffffffffa032d3e1>] ? btrfs_congested_fn+0x31/0xa0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff81176a41>] page_cache_async_readahead+0x81/0xb0
[Sat Dec 26 04:58:14 2015] [<ffffffff8116af97>] generic_file_read_iter+0x407/0x5d0
[Sat Dec 26 04:58:14 2015] [<ffffffff811d7b0e>] __vfs_read+0xae/0xe0
[Sat Dec 26 04:58:14 2015] [<ffffffff811d8195>] vfs_read+0x95/0x140
[Sat Dec 26 04:58:14 2015] [<ffffffff811d907f>] SyS_read+0x4f/0xc0
[Sat Dec 26 04:58:14 2015] [<ffffffff815a02f2>] system_call_fastpath+0x16/0x75
[Sat Dec 26 04:58:14 2015] INFO: task rdiff-backup:3541 blocked for more than 120 seconds.
[Sat Dec 26 04:58:14 2015] Not tainted 4.1.15-rm2+ #100
[Sat Dec 26 04:58:14 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat Dec 26 04:58:14 2015] rdiff-backup D ffff88079b5f3cb8 0 3541 3539 0x00000000
[Sat Dec 26 04:58:14 2015] ffff88079b5f3cb8 ffff8807faf18000 ffff8805fd1f64c0 ffff88079b5f3cd8
[Sat Dec 26 04:58:14 2015] ffff88079b5f4000 0000000000000009 ffff8807f8f4ea98 ffff8807f8f4eaf0
[Sat Dec 26 04:58:14 2015] ffff8807f8f4eb24 ffff88079b5f3cd8 ffffffff8159bc27 0000000000000009
[Sat Dec 26 04:58:14 2015] Call Trace:
[Sat Dec 26 04:58:14 2015] [<ffffffff8159bc27>] schedule+0x37/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffffa0371c9c>] wait_log_commit.isra.14+0xdc/0xf0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff810b6c50>] ? wait_woken+0x90/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffffa0378c9b>] btrfs_sync_log+0x45b/0xa70 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa03797f5>] ? btrfs_log_dentry_safe+0x75/0x90 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa034c6ea>] btrfs_sync_file+0x2ea/0x340 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff8120b236>] vfs_fsync_range+0x46/0xb0
[Sat Dec 26 04:58:14 2015] [<ffffffff811d73fc>] ? do_sys_open+0x1ac/0x230
[Sat Dec 26 04:58:14 2015] [<ffffffff8120b304>] do_fsync+0x44/0x70
[Sat Dec 26 04:58:14 2015] [<ffffffff8120b5b0>] SyS_fsync+0x10/0x20
[Sat Dec 26 04:58:14 2015] [<ffffffff815a02f2>] system_call_fastpath+0x16/0x75
[Sat Dec 26 04:58:14 2015] INFO: task rdiff-backup:3544 blocked for more than 120 seconds.
[Sat Dec 26 04:58:14 2015] Not tainted 4.1.15-rm2+ #100
[Sat Dec 26 04:58:14 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat Dec 26 04:58:14 2015] rdiff-backup D ffff88076efa36c8 0 3544 3542 0x00000000
[Sat Dec 26 04:58:14 2015] ffff88076efa36c8 ffffffff81a13540 ffff880101d48000 ffff88076efa36e8
[Sat Dec 26 04:58:14 2015] ffff88076efa4000 ffff88013ad77aa8 ffff880101d48000 ffff880101d48000
[Sat Dec 26 04:58:14 2015] ffff88076efa3718 ffff88076efa36e8 ffffffff8159bc27 ffff88013ad77aa8
[Sat Dec 26 04:58:14 2015] Call Trace:
[Sat Dec 26 04:58:14 2015] [<ffffffff8159bc27>] schedule+0x37/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffffa036fc75>] btrfs_tree_read_lock+0xc5/0x120 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff810b6c50>] ? wait_woken+0x90/0x90
[Sat Dec 26 04:58:14 2015] [<ffffffffa030b2bb>] btrfs_read_lock_root_node+0x3b/0x50 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0310509>] btrfs_search_slot+0x749/0xa30 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0041c24>] ? sd_init_command+0x64/0xe50 [sd_mod]
[Sat Dec 26 04:58:14 2015] [<ffffffffa03296c7>] btrfs_lookup_file_extent+0x37/0x40 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa033b24e>] btrfs_get_extent+0x15e/0xa80 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa035380e>] ? insert_state+0xae/0x160 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0357438>] __do_readpage+0x188/0x7b0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0354c3b>] ? lock_extent_bits+0x7b/0x230 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa033b0f0>] ? btrfs_real_readdir+0x5d0/0x5d0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0351c68>] ? btrfs_lookup_ordered_range+0x178/0x1b0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0357ddf>] __extent_readpages.constprop.38+0x29f/0x2c0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff81169fce>] ? __add_to_page_cache_locked+0x19e/0x2a0
[Sat Dec 26 04:58:14 2015] [<ffffffffa033b0f0>] ? btrfs_real_readdir+0x5d0/0x5d0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0358edd>] extent_readpages+0x17d/0x1e0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa033b0f0>] ? btrfs_real_readdir+0x5d0/0x5d0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffffa0337f2f>] btrfs_readpages+0x1f/0x30 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff811766dc>] __do_page_cache_readahead+0x18c/0x200
[Sat Dec 26 04:58:14 2015] [<ffffffff81176839>] ondemand_readahead+0xe9/0x270
[Sat Dec 26 04:58:14 2015] [<ffffffffa032d3e1>] ? btrfs_congested_fn+0x31/0xa0 [btrfs]
[Sat Dec 26 04:58:14 2015] [<ffffffff81176a41>] page_cache_async_readahead+0x81/0xb0
[Sat Dec 26 04:58:14 2015] [<ffffffff8116af97>] generic_file_read_iter+0x407/0x5d0
[Sat Dec 26 04:58:14 2015] [<ffffffff810a91e9>] ? set_next_entity+0xb9/0x4c0
[Sat Dec 26 04:58:14 2015] [<ffffffff811d7b0e>] __vfs_read+0xae/0xe0
[Sat Dec 26 04:58:14 2015] [<ffffffff811d8195>] vfs_read+0x95/0x140
[Sat Dec 26 04:58:14 2015] [<ffffffff811d907f>] SyS_read+0x4f/0xc0
[Sat Dec 26 04:58:14 2015] [<ffffffff815a02f2>] system_call_fastpath+0x16/0x75
--
With respect,
Roman
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 198 bytes --]
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Deadlock after upgrade to 4.1
2015-12-26 2:00 Deadlock after upgrade to 4.1 Roman Mamedov
@ 2015-12-26 4:04 ` Duncan
2015-12-26 4:34 ` Chris Murphy
1 sibling, 0 replies; 6+ messages in thread
From: Duncan @ 2015-12-26 4:04 UTC (permalink / raw)
To: linux-btrfs
Roman Mamedov posted on Sat, 26 Dec 2015 07:00:04 +0500 as excerpted:
> On the first or second night after upgrade from a 3.18.21 kernel to
> 4.1.15,
> during concurrent heavy file operations (pruning old backups), I got
> into this deadlock(?).
>
> After these messages any attempt to write to the affected filesystem
> would hang indefinitely, system load went to ~37, and there seemed to be
> no HDD activity.
>
> It did not clear up in about 40 minutes, I ended up forcibly rebooting
> the machine.
>
> Dunno how useful this is as a "new" bugreport, but maybe this looks
> familiar to someone, and perhaps this is something that is already fixed
> in 4.2/4.3?
I'm not a dev and the traces don't mean a lot to me, but as a list
regular... 4.1 is the current latest LTS (tho 4.4 is soon to take the LTS
"latest" label) and is thus well within the supported range.
(So is/was 3.18 as the second latest LTS, but it's about to lose that to
4.1 when 4.4 becomes the latest, and the two latest LTS, as well as the
two latest current kernels, are where the focus is, so 3.18 is already
losing some focus as 4.4 nears.)
So this report would certainly seem to be a concern, the more so since
others are no doubt working on upgrades from 3.18 as well. Even if it's
not happening in 4.3/4.4, that simply means LTS is still missing a
patch. Tho last I knew Greg was working his way out from a post-vacation
patch backlog, so it's possible it's already in the queue.
Thanks for the report, particularly because as I said, others are likely
to be upgrading ATM as well due to the status changes when 4.4 releases.
I'm sure the devs will be looking at it.
--
Duncan - List replies preferred. No HTML msgs.
"Every nonfree program has a lord, a master --
and if you use the program, he is your master." Richard Stallman
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Deadlock after upgrade to 4.1
2015-12-26 2:00 Deadlock after upgrade to 4.1 Roman Mamedov
2015-12-26 4:04 ` Duncan
@ 2015-12-26 4:34 ` Chris Murphy
2015-12-29 13:24 ` Rich Freeman
2016-01-10 0:31 ` Reproduced deadlock after upgrade from 3.18 to 4.1 or 4.3 (+ more info) Roman Mamedov
1 sibling, 2 replies; 6+ messages in thread
From: Chris Murphy @ 2015-12-26 4:34 UTC (permalink / raw)
To: Roman Mamedov; +Cc: Btrfs BTRFS
This could be an unintended regression, I'm not finding much related
at all in recent history in the traces. I'd say reproduce and get a
sysrq+w captured. Most of the traces are actually from rdiff-backup,
but the first one is a kworker. So something happens and then due to
the ensuing congestion it all just gets worse. Maybe it would have
eventually recovered but once it's this congested it might have taken
a really long time.
I would then also try to reproduce with 4.2.8 or 4.3.3 because those
have ~ 25% backports than made it to 4.1.15, so there's an off chance
it's fixed there. But even better to just go straight to 4.4.rc6 if
you can, because an unintended regression that's not known will likely
happen in 4.4 and would need to be fixed now before it'd get
backported anyway. *shrug*
Chris Murphy
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Deadlock after upgrade to 4.1
2015-12-26 4:34 ` Chris Murphy
@ 2015-12-29 13:24 ` Rich Freeman
2016-01-10 0:31 ` Reproduced deadlock after upgrade from 3.18 to 4.1 or 4.3 (+ more info) Roman Mamedov
1 sibling, 0 replies; 6+ messages in thread
From: Rich Freeman @ 2015-12-29 13:24 UTC (permalink / raw)
To: Chris Murphy; +Cc: Roman Mamedov, Btrfs BTRFS
On Fri, Dec 25, 2015 at 11:34 PM, Chris Murphy <lists@colorremedies.com> wrote:
> I would then also try to reproduce with 4.2.8 or 4.3.3 because those
> have ~ 25% backports than made it to 4.1.15, so there's an off chance
> it's fixed there.
I take it that those backports are in the queue though? I was
actually thinking about updating to 4.1 over the holidays but this
thread is making me think that btrfs isn't quite ready in 4.1 yet.
3.18.25 is about the best experience with btrfs I've had so far, and I
guess I don't really have any reason to update until raid5 is stable
(which seems a long way off).
--
Rich
^ permalink raw reply [flat|nested] 6+ messages in thread
* Reproduced deadlock after upgrade from 3.18 to 4.1 or 4.3 (+ more info)
2015-12-26 4:34 ` Chris Murphy
2015-12-29 13:24 ` Rich Freeman
@ 2016-01-10 0:31 ` Roman Mamedov
2016-01-25 15:53 ` Roman Mamedov
1 sibling, 1 reply; 6+ messages in thread
From: Roman Mamedov @ 2016-01-10 0:31 UTC (permalink / raw)
To: Chris Murphy; +Cc: Btrfs BTRFS
[-- Attachment #1.1: Type: text/plain, Size: 22532 bytes --]
On Fri, 25 Dec 2015 21:34:43 -0700
Chris Murphy <lists@colorremedies.com> wrote:
> This could be an unintended regression, I'm not finding much related
> at all in recent history in the traces. I'd say reproduce and get a
> sysrq+w captured. Most of the traces are actually from rdiff-backup,
> but the first one is a kworker. So something happens and then due to
> the ensuing congestion it all just gets worse. Maybe it would have
> eventually recovered but once it's this congested it might have taken
> a really long time.
>
> I would then also try to reproduce with 4.2.8 or 4.3.3 because those
> have ~ 25% backports than made it to 4.1.15, so there's an off chance
> it's fixed there. But even better to just go straight to 4.4.rc6 if
> you can, because an unintended regression that's not known will likely
> happen in 4.4 and would need to be fixed now before it'd get
> backported anyway. *shrug*
Hello,
After this case I went back to 3.18.25, and the system worked fine for about 2
weeks more. However now I decided to try upgrading again, this time to 4.3.3 -
and hit the deadlock on the very first attempt to use the same script.
The script launches many rdiff-backup processes at once to prune old backups,
so it's heavy concurrent load of directory listing and file deletion.
In dmesg I got the following, sysrq+w is attached (I don't think it managed to fit
into dmesg from beginning, but still seems to be some useful stuff there)
[ 7676.096403] INFO: task kworker/u16:10:5653 blocked for more than 120 seconds.
[ 7676.096429] Not tainted 4.3.3-rm1+ #101
[ 7676.096438] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 7676.096452] kworker/u16:10 D ffff88082ecd5cc0 0 5653 2 0x00000000
[ 7676.096496] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[ 7676.096500] ffff8807512979b8 0000000000000046 ffff88080af10000 ffff8807ff411d40
[ 7676.096505] ffff880751298000 00000000ffffff00 ffff8807ff411d40 ffff8807ff411d40
[ 7676.096510] ffff8800ad8e9928 ffff8807512979d0 ffffffff815ca143 ffff8800ad8e9990
[ 7676.096515] Call Trace:
[ 7676.096525] [<ffffffff815ca143>] schedule+0x33/0x80
[ 7676.096555] [<ffffffffa036c26c>] btrfs_tree_read_lock+0xec/0x140 [btrfs]
[ 7676.096561] [<ffffffff810bc270>] ? wait_woken+0x90/0x90
[ 7676.096579] [<ffffffffa0304644>] btrfs_read_lock_root_node+0x34/0x50 [btrfs]
[ 7676.096597] [<ffffffffa03099d4>] btrfs_search_slot+0x744/0x9f0 [btrfs]
[ 7676.096602] [<ffffffff8130900e>] ? cpumask_next_and+0x2e/0x40
[ 7676.096623] [<ffffffffa03231e7>] btrfs_lookup_file_extent+0x47/0x70 [btrfs]
[ 7676.096650] [<ffffffffa03447bc>] __btrfs_drop_extents+0x19c/0xf10 [btrfs]
[ 7676.096679] [<ffffffffa034e681>] ? __set_extent_bit+0x221/0x5a0 [btrfs]
[ 7676.096685] [<ffffffff811cde2b>] ? kmem_cache_alloc+0x11b/0x130
[ 7676.096701] [<ffffffffa030439a>] ? btrfs_alloc_path+0x1a/0x20 [btrfs]
[ 7676.096726] [<ffffffffa03329f4>] insert_reserved_file_extent.constprop.63+0xb4/0x320 [btrfs]
[ 7676.096752] [<ffffffffa03397d4>] btrfs_finish_ordered_io+0x2f4/0x650 [btrfs]
[ 7676.096759] [<ffffffff81020989>] ? sched_clock+0x9/0x10
[ 7676.096783] [<ffffffffa0339db5>] finish_ordered_fn+0x15/0x20 [btrfs]
[ 7676.096811] [<ffffffffa03627bf>] normal_work_helper+0xbf/0x250 [btrfs]
[ 7676.096839] [<ffffffffa0362ae2>] btrfs_endio_write_helper+0x12/0x20 [btrfs]
[ 7676.096845] [<ffffffff81092e80>] process_one_work+0x150/0x3f0
[ 7676.096849] [<ffffffff81093929>] worker_thread+0x69/0x470
[ 7676.096853] [<ffffffff810938c0>] ? rescuer_thread+0x310/0x310
[ 7676.096858] [<ffffffff8109901a>] kthread+0xea/0x100
[ 7676.096863] [<ffffffff81098f30>] ? kthread_park+0x60/0x60
[ 7676.096868] [<ffffffff815ce74f>] ret_from_fork+0x3f/0x70
[ 7676.096873] [<ffffffff81098f30>] ? kthread_park+0x60/0x60
[ 7676.096927] INFO: task kworker/u16:7:10989 blocked for more than 120 seconds.
[ 7676.096938] Not tainted 4.3.3-rm1+ #101
[ 7676.096946] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 7676.096958] kworker/u16:7 D 0000000000000004 0 10989 2 0x00000000
[ 7676.096990] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[ 7676.096993] ffff8804ec65b9b8 0000000000000046 ffff8807ffee57c0 ffff88066ed59d40
[ 7676.096998] ffff8804ec65c000 00000000ffffff00 ffff88066ed59d40 ffff88066ed59d40
[ 7676.097002] ffff8800ad8e9928 ffff8804ec65b9d0 ffffffff815ca143 ffff8800ad8e9990
[ 7676.097007] Call Trace:
[ 7676.097012] [<ffffffff815ca143>] schedule+0x33/0x80
[ 7676.097040] [<ffffffffa036c26c>] btrfs_tree_read_lock+0xec/0x140 [btrfs]
[ 7676.097045] [<ffffffff810bc270>] ? wait_woken+0x90/0x90
[ 7676.097062] [<ffffffffa0304644>] btrfs_read_lock_root_node+0x34/0x50 [btrfs]
[ 7676.097079] [<ffffffffa03099d4>] btrfs_search_slot+0x744/0x9f0 [btrfs]
[ 7676.097101] [<ffffffffa03231e7>] btrfs_lookup_file_extent+0x47/0x70 [btrfs]
[ 7676.097127] [<ffffffffa03447bc>] __btrfs_drop_extents+0x19c/0xf10 [btrfs]
[ 7676.097132] [<ffffffff811ce05f>] ? __slab_free.isra.69+0x7f/0x1a0
[ 7676.097161] [<ffffffffa034e681>] ? __set_extent_bit+0x221/0x5a0 [btrfs]
[ 7676.097166] [<ffffffff811cde2b>] ? kmem_cache_alloc+0x11b/0x130
[ 7676.097183] [<ffffffffa030439a>] ? btrfs_alloc_path+0x1a/0x20 [btrfs]
[ 7676.097207] [<ffffffffa03329f4>] insert_reserved_file_extent.constprop.63+0xb4/0x320 [btrfs]
[ 7676.097232] [<ffffffffa03397d4>] btrfs_finish_ordered_io+0x2f4/0x650 [btrfs]
[ 7676.097257] [<ffffffffa0339db5>] finish_ordered_fn+0x15/0x20 [btrfs]
[ 7676.097284] [<ffffffffa03627bf>] normal_work_helper+0xbf/0x250 [btrfs]
[ 7676.097312] [<ffffffffa0362ae2>] btrfs_endio_write_helper+0x12/0x20 [btrfs]
[ 7676.097316] [<ffffffff81092e80>] process_one_work+0x150/0x3f0
[ 7676.097320] [<ffffffff81093929>] worker_thread+0x69/0x470
[ 7676.097324] [<ffffffff810938c0>] ? rescuer_thread+0x310/0x310
[ 7676.097329] [<ffffffff8109901a>] kthread+0xea/0x100
[ 7676.097333] [<ffffffff81098f30>] ? kthread_park+0x60/0x60
[ 7676.097338] [<ffffffff815ce74f>] ret_from_fork+0x3f/0x70
[ 7676.097343] [<ffffffff81098f30>] ? kthread_park+0x60/0x60
[ 7676.097347] INFO: task kworker/u16:9:10992 blocked for more than 120 seconds.
[ 7676.097357] Not tainted 4.3.3-rm1+ #101
[ 7676.097365] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 7676.097379] kworker/u16:9 D ffff88082ec15cc0 0 10992 2 0x00000000
[ 7676.097410] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[ 7676.097413] ffff8804e56039b8 0000000000000046 ffffffff81a14540 ffff8807055e3a80
[ 7676.097418] ffff8804e5604000 00000000ffffff00 ffff8807055e3a80 ffff8807055e3a80
[ 7676.097422] ffff8800ad8e9928 ffff8804e56039d0 ffffffff815ca143 ffff8800ad8e9990
[ 7676.097427] Call Trace:
[ 7676.097432] [<ffffffff815ca143>] schedule+0x33/0x80
[ 7676.097459] [<ffffffffa036c26c>] btrfs_tree_read_lock+0xec/0x140 [btrfs]
[ 7676.097464] [<ffffffff810bc270>] ? wait_woken+0x90/0x90
[ 7676.097480] [<ffffffffa0304644>] btrfs_read_lock_root_node+0x34/0x50 [btrfs]
[ 7676.097497] [<ffffffffa03099d4>] btrfs_search_slot+0x744/0x9f0 [btrfs]
[ 7676.097504] [<ffffffff810a3d35>] ? ttwu_do_activate.constprop.91+0x65/0x70
[ 7676.097525] [<ffffffffa03231e7>] btrfs_lookup_file_extent+0x47/0x70 [btrfs]
[ 7676.097551] [<ffffffffa03447bc>] __btrfs_drop_extents+0x19c/0xf10 [btrfs]
[ 7676.097579] [<ffffffffa034e681>] ? __set_extent_bit+0x221/0x5a0 [btrfs]
[ 7676.097585] [<ffffffff811cde2b>] ? kmem_cache_alloc+0x11b/0x130
[ 7676.097601] [<ffffffffa030439a>] ? btrfs_alloc_path+0x1a/0x20 [btrfs]
[ 7676.097625] [<ffffffffa03329f4>] insert_reserved_file_extent.constprop.63+0xb4/0x320 [btrfs]
[ 7676.097650] [<ffffffffa03397d4>] btrfs_finish_ordered_io+0x2f4/0x650 [btrfs]
[ 7676.097675] [<ffffffffa0339db5>] finish_ordered_fn+0x15/0x20 [btrfs]
[ 7676.097703] [<ffffffffa03627bf>] normal_work_helper+0xbf/0x250 [btrfs]
[ 7676.097730] [<ffffffffa0362ae2>] btrfs_endio_write_helper+0x12/0x20 [btrfs]
[ 7676.097735] [<ffffffff81092e80>] process_one_work+0x150/0x3f0
[ 7676.097739] [<ffffffff81093929>] worker_thread+0x69/0x470
[ 7676.097742] [<ffffffff810938c0>] ? rescuer_thread+0x310/0x310
[ 7676.097747] [<ffffffff8109901a>] kthread+0xea/0x100
[ 7676.097752] [<ffffffff81098f30>] ? kthread_park+0x60/0x60
[ 7676.097757] [<ffffffff815ce74f>] ret_from_fork+0x3f/0x70
[ 7676.097762] [<ffffffff81098f30>] ? kthread_park+0x60/0x60
[ 7676.097766] INFO: task kworker/u16:14:10994 blocked for more than 120 seconds.
[ 7676.097779] Not tainted 4.3.3-rm1+ #101
[ 7676.097787] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 7676.099024] kworker/u16:14 D ffff88082ec55cc0 0 10994 2 0x00000000
[ 7676.099054] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[ 7676.099057] ffff88076865b9b8 0000000000000046 ffff88080aefba80 ffff8807bfb18000
[ 7676.099062] ffff88076865c000 00000000ffffff00 ffff8807bfb18000 ffff8807bfb18000
[ 7676.099066] ffff8800ad8e9928 ffff88076865b9d0 ffffffff815ca143 ffff8800ad8e9990
[ 7676.099071] Call Trace:
[ 7676.099075] [<ffffffff815ca143>] schedule+0x33/0x80
[ 7676.099103] [<ffffffffa036c26c>] btrfs_tree_read_lock+0xec/0x140 [btrfs]
[ 7676.099107] [<ffffffff810bc270>] ? wait_woken+0x90/0x90
[ 7676.099124] [<ffffffffa0304644>] btrfs_read_lock_root_node+0x34/0x50 [btrfs]
[ 7676.099144] [<ffffffffa03099d4>] btrfs_search_slot+0x744/0x9f0 [btrfs]
[ 7676.099165] [<ffffffffa03231e7>] btrfs_lookup_file_extent+0x47/0x70 [btrfs]
[ 7676.099190] [<ffffffffa03447bc>] __btrfs_drop_extents+0x19c/0xf10 [btrfs]
[ 7676.099219] [<ffffffffa034e681>] ? __set_extent_bit+0x221/0x5a0 [btrfs]
[ 7676.099224] [<ffffffff811cde2b>] ? kmem_cache_alloc+0x11b/0x130
[ 7676.099240] [<ffffffffa030439a>] ? btrfs_alloc_path+0x1a/0x20 [btrfs]
[ 7676.099265] [<ffffffffa03329f4>] insert_reserved_file_extent.constprop.63+0xb4/0x320 [btrfs]
[ 7676.099290] [<ffffffffa03397d4>] btrfs_finish_ordered_io+0x2f4/0x650 [btrfs]
[ 7676.099315] [<ffffffffa0339db5>] finish_ordered_fn+0x15/0x20 [btrfs]
[ 7676.099343] [<ffffffffa03627bf>] normal_work_helper+0xbf/0x250 [btrfs]
[ 7676.099371] [<ffffffffa0362ae2>] btrfs_endio_write_helper+0x12/0x20 [btrfs]
[ 7676.099375] [<ffffffff81092e80>] process_one_work+0x150/0x3f0
[ 7676.099380] [<ffffffff81093929>] worker_thread+0x69/0x470
[ 7676.099384] [<ffffffff810938c0>] ? rescuer_thread+0x310/0x310
[ 7676.099388] [<ffffffff8109901a>] kthread+0xea/0x100
[ 7676.099393] [<ffffffff81098f30>] ? kthread_park+0x60/0x60
[ 7676.099398] [<ffffffff815ce74f>] ret_from_fork+0x3f/0x70
[ 7676.099403] [<ffffffff81098f30>] ? kthread_park+0x60/0x60
[ 7676.099412] INFO: task rdiff-backup:17190 blocked for more than 120 seconds.
[ 7676.099422] Not tainted 4.3.3-rm1+ #101
[ 7676.099430] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 7676.099443] rdiff-backup D 0000000000000006 0 17190 17188 0x00000000
[ 7676.099448] ffff8804e50c7cd0 0000000000000082 ffff88047d961d40 ffff88015a480000
[ 7676.099452] ffff8804e50c8000 0000000000000012 ffff88080946aa98 ffff88080946aad8
[ 7676.099457] ffff88080946ab20 ffff8804e50c7ce8 ffffffff815ca143 ffff88080946a800
[ 7676.099461] Call Trace:
[ 7676.099466] [<ffffffff815ca143>] schedule+0x33/0x80
[ 7676.099493] [<ffffffffa036d299>] wait_log_commit+0xe9/0x110 [btrfs]
[ 7676.099498] [<ffffffff810bc270>] ? wait_woken+0x90/0x90
[ 7676.099526] [<ffffffffa0372d5a>] btrfs_sync_log+0x3ea/0xac0 [btrfs]
[ 7676.099531] [<ffffffff81200701>] ? dput+0xc1/0x240
[ 7676.099559] [<ffffffffa0373a15>] ? btrfs_log_dentry_safe+0x75/0x90 [btrfs]
[ 7676.099585] [<ffffffffa034728e>] btrfs_sync_file+0x2ee/0x350 [btrfs]
[ 7676.099591] [<ffffffff8121ce76>] vfs_fsync_range+0x46/0xc0
[ 7676.099596] [<ffffffff811e75ab>] ? do_sys_open+0x1bb/0x240
[ 7676.099600] [<ffffffff8121cf54>] do_fsync+0x44/0x70
[ 7676.099604] [<ffffffff8121d200>] SyS_fsync+0x10/0x20
[ 7676.099610] [<ffffffff815ce3b6>] entry_SYSCALL_64_fastpath+0x16/0x75
[ 7676.099614] INFO: task rdiff-backup:17227 blocked for more than 120 seconds.
[ 7676.099624] Not tainted 4.3.3-rm1+ #101
[ 7676.099632] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 7676.099644] rdiff-backup D ffff88082ecd5cc0 0 17227 17225 0x00000000
[ 7676.099649] ffff88015a73f870 0000000000000086 ffff88080af10000 ffff88014d29ba80
[ 7676.099654] ffff88015a740000 ffff88058b93cb58 ffff88058b93cb70 ffff88015a73f8b0
[ 7676.099658] ffff88058b93cb50 ffff88015a73f888 ffffffff815ca143 ffff88058b93caf0
[ 7676.099663] Call Trace:
[ 7676.099667] [<ffffffff815ca143>] schedule+0x33/0x80
[ 7676.099695] [<ffffffffa036c579>] btrfs_tree_lock+0x79/0x210 [btrfs]
[ 7676.099699] [<ffffffff810bc270>] ? wait_woken+0x90/0x90
[ 7676.099716] [<ffffffffa0304694>] btrfs_lock_root_node+0x34/0x50 [btrfs]
[ 7676.099733] [<ffffffffa0309b76>] btrfs_search_slot+0x8e6/0x9f0 [btrfs]
[ 7676.099751] [<ffffffffa030b738>] btrfs_insert_empty_items+0x78/0xd0 [btrfs]
[ 7676.099779] [<ffffffffa036fbe7>] overwrite_item+0xf7/0x5f0 [btrfs]
[ 7676.099805] [<ffffffffa03ac015>] log_dir_items+0x2c5/0x4c2 [btrfs]
[ 7676.099831] [<ffffffffa03ac27e>] log_directory_changes+0x6c/0xb4 [btrfs]
[ 7676.099857] [<ffffffffa03ace15>] btrfs_log_inode+0xb4f/0xbcf [btrfs]
[ 7676.099862] [<ffffffff81200701>] ? dput+0xc1/0x240
[ 7676.099890] [<ffffffffa0371d59>] btrfs_log_inode_parent+0x2c9/0xee0 [btrfs]
[ 7676.099896] [<ffffffff811f81d3>] ? putname+0x53/0x60
[ 7676.099919] [<ffffffffa032f221>] ? wait_current_trans.isra.21+0x31/0x120 [btrfs]
[ 7676.099924] [<ffffffff811cdd3d>] ? kmem_cache_alloc+0x2d/0x130
[ 7676.099947] [<ffffffffa032ece5>] ? join_transaction.isra.15+0x25/0x440 [btrfs]
[ 7676.099975] [<ffffffffa0373a0a>] btrfs_log_dentry_safe+0x6a/0x90 [btrfs]
[ 7676.100001] [<ffffffffa03471dd>] btrfs_sync_file+0x23d/0x350 [btrfs]
[ 7676.100007] [<ffffffff8121ce76>] vfs_fsync_range+0x46/0xc0
[ 7676.100011] [<ffffffff811e75ab>] ? do_sys_open+0x1bb/0x240
[ 7676.100015] [<ffffffff8121cf54>] do_fsync+0x44/0x70
[ 7676.100019] [<ffffffff8121d200>] SyS_fsync+0x10/0x20
[ 7676.100025] [<ffffffff815ce3b6>] entry_SYSCALL_64_fastpath+0x16/0x75
[ 7676.100029] INFO: task rdiff-backup:17230 blocked for more than 120 seconds.
[ 7676.100068] Not tainted 4.3.3-rm1+ #101
[ 7676.100076] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 7676.100089] rdiff-backup D 0000000000000001 0 17230 17228 0x00000000
[ 7676.100093] ffff880467a4f9a8 0000000000000086 ffff880806d6ba80 ffff88070549ba80
[ 7676.100098] ffff880467a50000 00000000ffffff00 ffff88070549ba80 ffff88070549ba80
[ 7676.100102] ffff8800ad8e9928 ffff880467a4f9c0 ffffffff815ca143 ffff8800ad8e9990
[ 7676.100107] Call Trace:
[ 7676.100111] [<ffffffff815ca143>] schedule+0x33/0x80
[ 7676.100139] [<ffffffffa036c26c>] btrfs_tree_read_lock+0xec/0x140 [btrfs]
[ 7676.100143] [<ffffffff810bc270>] ? wait_woken+0x90/0x90
[ 7676.100160] [<ffffffffa0304644>] btrfs_read_lock_root_node+0x34/0x50 [btrfs]
[ 7676.100177] [<ffffffffa03099d4>] btrfs_search_slot+0x744/0x9f0 [btrfs]
[ 7676.100182] [<ffffffff812c8c11>] ? crypto_shash_update+0x41/0x100
[ 7676.100203] [<ffffffffa0322323>] btrfs_lookup_dir_item+0x83/0xd0 [btrfs]
[ 7676.100227] [<ffffffffa033dc06>] btrfs_lookup_dentry+0xc6/0x560 [btrfs]
[ 7676.100232] [<ffffffff8120209f>] ? __d_alloc+0x11f/0x170
[ 7676.100257] [<ffffffffa033e0b2>] btrfs_lookup+0x12/0x40 [btrfs]
[ 7676.100261] [<ffffffff811f220d>] lookup_real+0x1d/0x60
[ 7676.100266] [<ffffffff811f25c7>] __lookup_hash+0x47/0x70
[ 7676.100270] [<ffffffff811f4035>] walk_component+0x215/0x4d0
[ 7676.100275] [<ffffffff811f495f>] link_path_walk+0x17f/0x580
[ 7676.100279] [<ffffffff811f4e6c>] path_lookupat+0x7c/0x110
[ 7676.100284] [<ffffffff811f867e>] filename_lookup+0xbe/0x1a0
[ 7676.100290] [<ffffffff810b2bcb>] ? should_numa_migrate_memory+0x6b/0x150
[ 7676.100295] [<ffffffff811cdd3d>] ? kmem_cache_alloc+0x2d/0x130
[ 7676.100299] [<ffffffff811f8241>] ? getname_flags+0x61/0x210
[ 7676.100304] [<ffffffff811f884f>] user_path_at_empty+0x3f/0x50
[ 7676.100308] [<ffffffff811ed15b>] vfs_fstatat+0x5b/0xc0
[ 7676.100312] [<ffffffff811ed741>] SYSC_newlstat+0x31/0x60
[ 7676.100323] [<ffffffff8106603c>] ? __do_page_fault+0x1cc/0x410
[ 7676.100366] [<ffffffff81209724>] ? mntput+0x24/0x40
[ 7676.100370] [<ffffffff811eda0e>] SyS_newlstat+0xe/0x10
[ 7676.100376] [<ffffffff815ce3b6>] entry_SYSCALL_64_fastpath+0x16/0x75
[ 7676.100380] INFO: task rdiff-backup:17235 blocked for more than 120 seconds.
[ 7676.100391] Not tainted 4.3.3-rm1+ #101
[ 7676.100401] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 7676.100426] rdiff-backup D ffff88082edd5cc0 0 17235 17233 0x00000000
[ 7676.100474] ffff88014d22bcd0 0000000000000082 ffff88080af30000 ffff88014d29d7c0
[ 7676.100547] ffff88014d22c000 0000000000000012 ffff88080946aa98 ffff88080946aad8
[ 7676.100621] ffff88080946ab20 ffff88014d22bce8 ffffffff815ca143 ffff88080946a800
[ 7676.100627] Call Trace:
[ 7676.100633] [<ffffffff815ca143>] schedule+0x33/0x80
[ 7676.100662] [<ffffffffa036d299>] wait_log_commit+0xe9/0x110 [btrfs]
[ 7676.100667] [<ffffffff810bc270>] ? wait_woken+0x90/0x90
[ 7676.100697] [<ffffffffa0372d5a>] btrfs_sync_log+0x3ea/0xac0 [btrfs]
[ 7676.100702] [<ffffffff81200701>] ? dput+0xc1/0x240
[ 7676.100731] [<ffffffffa0373a15>] ? btrfs_log_dentry_safe+0x75/0x90 [btrfs]
[ 7676.100759] [<ffffffffa034728e>] btrfs_sync_file+0x2ee/0x350 [btrfs]
[ 7676.100765] [<ffffffff8121ce76>] vfs_fsync_range+0x46/0xc0
[ 7676.100770] [<ffffffff811e75ab>] ? do_sys_open+0x1bb/0x240
[ 7676.100774] [<ffffffff8121cf54>] do_fsync+0x44/0x70
[ 7676.100779] [<ffffffff8121d200>] SyS_fsync+0x10/0x20
[ 7676.100785] [<ffffffff815ce3b6>] entry_SYSCALL_64_fastpath+0x16/0x75
[ 7676.100790] INFO: task rdiff-backup:17238 blocked for more than 120 seconds.
[ 7676.100801] Not tainted 4.3.3-rm1+ #101
[ 7676.100809] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 7676.100822] rdiff-backup D ffff88082edd5cc0 0 17238 17236 0x00000000
[ 7676.100828] ffff88015a74b8c8 0000000000000082 ffff88080af30000 ffff88015a630000
[ 7676.100834] ffff88015a74c000 ffff88058b93cb58 ffff88058b93cb70 ffff88015a74b908
[ 7676.100839] ffff88058b93cb50 ffff88015a74b8e0 ffffffff815ca143 ffff88058b93caf0
[ 7676.100845] Call Trace:
[ 7676.100850] [<ffffffff815ca143>] schedule+0x33/0x80
[ 7676.100878] [<ffffffffa036c579>] btrfs_tree_lock+0x79/0x210 [btrfs]
[ 7676.100884] [<ffffffff810bc270>] ? wait_woken+0x90/0x90
[ 7676.100901] [<ffffffffa0304694>] btrfs_lock_root_node+0x34/0x50 [btrfs]
[ 7676.100919] [<ffffffffa0309b76>] btrfs_search_slot+0x8e6/0x9f0 [btrfs]
[ 7676.100938] [<ffffffffa030b738>] btrfs_insert_empty_items+0x78/0xd0 [btrfs]
[ 7676.100965] [<ffffffffa03aa883>] insert_dir_log_key+0x54/0xbd [btrfs]
[ 7676.100992] [<ffffffffa03ac1ee>] log_dir_items+0x49e/0x4c2 [btrfs]
[ 7676.101020] [<ffffffffa03ac27e>] log_directory_changes+0x6c/0xb4 [btrfs]
[ 7676.101048] [<ffffffffa03ace15>] btrfs_log_inode+0xb4f/0xbcf [btrfs]
[ 7676.101054] [<ffffffff81200701>] ? dput+0xc1/0x240
[ 7676.101082] [<ffffffffa0371d59>] btrfs_log_inode_parent+0x2c9/0xee0 [btrfs]
[ 7676.101088] [<ffffffff811f81d3>] ? putname+0x53/0x60
[ 7676.101114] [<ffffffffa032f221>] ? wait_current_trans.isra.21+0x31/0x120 [btrfs]
[ 7676.101120] [<ffffffff811cdd3d>] ? kmem_cache_alloc+0x2d/0x130
[ 7676.101145] [<ffffffffa032ece5>] ? join_transaction.isra.15+0x25/0x440 [btrfs]
[ 7676.101193] [<ffffffffa0373a0a>] btrfs_log_dentry_safe+0x6a/0x90 [btrfs]
[ 7676.101236] [<ffffffffa03471dd>] btrfs_sync_file+0x23d/0x350 [btrfs]
[ 7676.101257] [<ffffffff8121ce76>] vfs_fsync_range+0x46/0xc0
[ 7676.101278] [<ffffffff811e75ab>] ? do_sys_open+0x1bb/0x240
[ 7676.101299] [<ffffffff8121cf54>] do_fsync+0x44/0x70
[ 7676.101320] [<ffffffff8121d200>] SyS_fsync+0x10/0x20
[ 7676.101345] [<ffffffff815ce3b6>] entry_SYSCALL_64_fastpath+0x16/0x75
[ 7676.101366] INFO: task rdiff-backup:17241 blocked for more than 120 seconds.
[ 7676.101386] Not tainted 4.3.3-rm1+ #101
[ 7676.101405] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 7676.101417] rdiff-backup D ffff88082ec95cc0 0 17241 17239 0x00000000
[ 7676.101423] ffff88046cc8f9b8 0000000000000082 ffff88080aefd7c0 ffff88047ed41d40
[ 7676.101428] ffff88046cc90000 ffff880665f385e0 ffff880665f385f8 ffff88046cc8f9f8
[ 7676.101433] ffff880665f385d8 ffff88046cc8f9d0 ffffffff815ca143 ffff880665f38578
[ 7676.101439] Call Trace:
[ 7676.101444] [<ffffffff815ca143>] schedule+0x33/0x80
[ 7676.101472] [<ffffffffa036c579>] btrfs_tree_lock+0x79/0x210 [btrfs]
[ 7676.101477] [<ffffffff810bc270>] ? wait_woken+0x90/0x90
[ 7676.101496] [<ffffffffa030997e>] btrfs_search_slot+0x6ee/0x9f0 [btrfs]
[ 7676.101518] [<ffffffffa0322764>] btrfs_lookup_xattr+0x84/0xd0 [btrfs]
[ 7676.101547] [<ffffffffa034a53b>] do_setxattr+0x30b/0x440 [btrfs]
[ 7676.101572] [<ffffffffa0330a92>] ? start_transaction+0x92/0x580 [btrfs]
[ 7676.101601] [<ffffffffa034a90f>] __btrfs_setxattr+0x8f/0x100 [btrfs]
[ 7676.101629] [<ffffffffa03a8f57>] __btrfs_set_acl+0xd7/0x180 [btrfs]
[ 7676.101658] [<ffffffffa03a9138>] btrfs_set_acl+0x18/0x20 [btrfs]
[ 7676.101664] [<ffffffff812481e7>] posix_acl_xattr_set+0xf7/0x120
[ 7676.101670] [<ffffffff8120e429>] generic_setxattr+0x69/0x80
[ 7676.101698] [<ffffffffa034adfd>] btrfs_setxattr+0xbd/0xe0 [btrfs]
[ 7676.101704] [<ffffffff8120ef21>] __vfs_setxattr_noperm+0x71/0x1b0
[ 7676.101710] [<ffffffff81286d32>] ? security_inode_setxattr+0x92/0xb0
[ 7676.101714] [<ffffffff8120f109>] vfs_setxattr+0xa9/0xb0
[ 7676.101720] [<ffffffff8120f290>] setxattr+0x180/0x200
[ 7676.101726] [<ffffffff812060bf>] ? notify_change+0x2df/0x360
[ 7676.101730] [<ffffffff811cdd3d>] ? kmem_cache_alloc+0x2d/0x130
[ 7676.101736] [<ffffffff811f8241>] ? getname_flags+0x61/0x210
[ 7676.101742] [<ffffffff810c249d>] ? percpu_down_read+0x1d/0x80
[ 7676.101748] [<ffffffff8120f3ba>] path_setxattr+0xaa/0xe0
[ 7676.101754] [<ffffffff8120f5b4>] SyS_setxattr+0x14/0x20
[ 7676.101760] [<ffffffff815ce3b6>] entry_SYSCALL_64_fastpath+0x16/0x75
--
With respect,
Roman
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^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2016-01-25 15:53 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2015-12-26 2:00 Deadlock after upgrade to 4.1 Roman Mamedov
2015-12-26 4:04 ` Duncan
2015-12-26 4:34 ` Chris Murphy
2015-12-29 13:24 ` Rich Freeman
2016-01-10 0:31 ` Reproduced deadlock after upgrade from 3.18 to 4.1 or 4.3 (+ more info) Roman Mamedov
2016-01-25 15:53 ` Roman Mamedov
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