https://bugzilla.kernel.org/show_bug.cgi?id=200835 Bug ID: 200835 Summary: XFS hangs in xfs_reclaim_inode() Product: File System Version: 2.5 Kernel Version: 4.14.62 Hardware: Intel OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: XFS Assignee: filesystem_xfs@xxxxxxxxxxxxxxxxxxxxxx Reporter: peter.klotz99@xxxxxxxxx Regression: No Created attachment 277895 --> https://bugzilla.kernel.org/attachment.cgi?id=277895&action=edit Hang of kernel 4.14.62 The attached file shows backtraces that occur in quick succession and ultimately lead to a complete server hang. The backtraces seem related to inode reclamation. For example the first backtrace: Aug 16 02:33:30 hpmicroserver kernel: INFO: task khugepaged:28 blocked for more than 120 seconds. Aug 16 02:33:30 hpmicroserver kernel: Not tainted 4.14.62-1-lts #1 Aug 16 02:33:30 hpmicroserver kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Aug 16 02:33:30 hpmicroserver kernel: khugepaged D 0 28 2 0x80000000 Aug 16 02:33:30 hpmicroserver kernel: Call Trace: Aug 16 02:33:30 hpmicroserver kernel: ? __schedule+0x284/0x860 Aug 16 02:33:30 hpmicroserver kernel: schedule+0x28/0x80 Aug 16 02:33:30 hpmicroserver kernel: schedule_timeout+0x292/0x370 Aug 16 02:33:30 hpmicroserver kernel: ? check_preempt_curr+0x62/0x90 Aug 16 02:33:30 hpmicroserver kernel: wait_for_completion+0xaf/0x140 Aug 16 02:33:30 hpmicroserver kernel: ? wake_up_q+0x70/0x70 Aug 16 02:33:30 hpmicroserver kernel: flush_work+0x116/0x1d0 Aug 16 02:33:30 hpmicroserver kernel: ? worker_detach_from_pool+0xa0/0xa0 Aug 16 02:33:30 hpmicroserver kernel: xlog_cil_force_lsn+0x78/0x210 [xfs] Aug 16 02:33:30 hpmicroserver kernel: ? enqueue_task_fair+0x5a/0x500 Aug 16 02:33:30 hpmicroserver kernel: ? native_sched_clock+0x37/0x90 Aug 16 02:33:30 hpmicroserver kernel: ? __switch_to_asm+0x40/0x70 Aug 16 02:33:30 hpmicroserver kernel: _xfs_log_force_lsn+0x71/0x340 [xfs] Aug 16 02:33:30 hpmicroserver kernel: ? try_to_wake_up+0x54/0x4b0 Aug 16 02:33:30 hpmicroserver kernel: ? update_group_capacity+0x27/0x1e0 Aug 16 02:33:30 hpmicroserver kernel: ? xfs_reclaim_inode+0xe3/0x340 [xfs] Aug 16 02:33:30 hpmicroserver kernel: __xfs_iunpin_wait+0xa7/0x160 [xfs] Aug 16 02:33:30 hpmicroserver kernel: ? bit_waitqueue+0x30/0x30 Aug 16 02:33:30 hpmicroserver kernel: xfs_reclaim_inode+0xe3/0x340 [xfs] Aug 16 02:33:30 hpmicroserver kernel: xfs_reclaim_inodes_ag+0x1b1/0x300 [xfs] Aug 16 02:33:30 hpmicroserver kernel: xfs_reclaim_inodes_nr+0x31/0x40 [xfs] Aug 16 02:33:30 hpmicroserver kernel: super_cache_scan+0x152/0x1a0 Aug 16 02:33:30 hpmicroserver kernel: shrink_slab.part.45+0x1e8/0x3c0 Aug 16 02:33:30 hpmicroserver kernel: shrink_node+0x123/0x310 Aug 16 02:33:30 hpmicroserver kernel: do_try_to_free_pages+0xc3/0x330 Aug 16 02:33:30 hpmicroserver kernel: try_to_free_pages+0xf4/0x1b0 Aug 16 02:33:30 hpmicroserver kernel: __alloc_pages_slowpath+0x3e4/0xd80 Aug 16 02:33:30 hpmicroserver kernel: ? __switch_to+0x170/0x4b0 Aug 16 02:33:30 hpmicroserver kernel: ? __switch_to_asm+0x34/0x70 Aug 16 02:33:30 hpmicroserver kernel: ? __switch_to_asm+0x34/0x70 Aug 16 02:33:30 hpmicroserver kernel: ? __switch_to_asm+0x40/0x70 Aug 16 02:33:30 hpmicroserver kernel: __alloc_pages_nodemask+0x226/0x240 Aug 16 02:33:30 hpmicroserver kernel: khugepaged_alloc_page+0x17/0x50 Aug 16 02:33:30 hpmicroserver kernel: khugepaged+0xbcb/0x2120 Aug 16 02:33:30 hpmicroserver kernel: ? wait_woken+0x80/0x80 Aug 16 02:33:30 hpmicroserver kernel: ? collapse_shmem+0xb90/0xb90 Aug 16 02:33:30 hpmicroserver kernel: kthread+0x119/0x130 Aug 16 02:33:30 hpmicroserver kernel: ? __kthread_parkme+0xa0/0xa0 Aug 16 02:33:30 hpmicroserver kernel: ret_from_fork+0x22/0x40 The problem has occurred twice so far. Once in kernel 4.14.52 and once in 4.14.62. I am using the Arch Linux LTS kernel so it is more or less the vanilla kernel. The server has two XFS filesystems. One is a 30TB XFS/LUKS/RAID setup, the other one is a plain 4TB XFS volume. -- You are receiving this mail because: You are watching the assignee of the bug.
