System hang due to xfs in xlog_grant_head_wait()
Issue
- System hang due to xfs in xlog_grant_head_wait().
- System hang with below backtrace:
PID: 2322 TASK: ffff88022ed816c0 CPU: 0 COMMAND: "xxx"
#0 [ffff8800ba55b8d0] __schedule at ffffffff815e6c7d
#1 [ffff8800ba55b938] schedule at ffffffff815e71b9
#2 [ffff8800ba55b948] xlog_grant_head_wait at ffffffffa021a06d [xfs]
#3 [ffff8800ba55b998] xlog_grant_head_check at ffffffffa021a1ee [xfs]
#4 [ffff8800ba55b9d8] xfs_log_reserve at ffffffffa021daef [xfs]
#5 [ffff8800ba55ba10] xfs_trans_reserve at ffffffffa01d7204 [xfs]
#6 [ffff8800ba55ba58] xfs_attr_set_int at ffffffffa01de8d7 [xfs]
#7 [ffff8800ba55bb58] xfs_attr_set at ffffffffa01df13f [xfs]
#8 [ffff8800ba55bb98] xfs_initxattrs at ffffffffa01cd5a1 [xfs]
#9 [ffff8800ba55bbb8] security_inode_init_security at ffffffff8125134a
#10 [ffff8800ba55bc40] xfs_init_security at ffffffffa01cd558 [xfs]
#11 [ffff8800ba55bc50] xfs_vn_mknod at ffffffffa01cd69d [xfs]
#12 [ffff8800ba55bcb0] xfs_vn_create at ffffffffa01cd7d3 [xfs]
#13 [ffff8800ba55bcc0] vfs_create at ffffffff811befdd
#14 [ffff8800ba55bcf8] do_last at ffffffff811bfbf4
#15 [ffff8800ba55bda0] path_openat at ffffffff811c0322
#16 [ffff8800ba55be48] do_filp_open at ffffffff811c0f3b
#17 [ffff8800ba55bf18] do_sys_open at ffffffff811aede3
#18 [ffff8800ba55bf70] sys_open at ffffffff811aeefe
#19 [ffff8800ba55bf80] system_call_fastpath at ffffffff815f2119
Environment
- Red Hat Enterprise Linux 7.0
- kernel-3.10.0-123.el7.x86_64
- XFS
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