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OCI - OL 7.5 Instance Hung After Running "firewall-cmd --reload" (Doc ID 2434827.1)

Last updated on JANUARY 30, 2019

Applies to:

Oracle Cloud Infrastructure - Version N/A to N/A [Release 1.0]
Oracle Linux Cloud Service - Version Oracle Linux 7.0 and later
Linux x86-64
Linux x86

Symptoms

OCI OL 7.5 instance freezes after adding a permanent firewall policy followed by firewall reload.

#sudo firewall-cmd --add-masquerade --permanent
#sudo firewall-cmd --reload

The following traces can be observed on serial console :

[337200.196155] INFO: task xfsaild/sda3:820 blocked for more than 120 seconds.
[337200.198096] Not tainted 4.1.12-124.17.1.el7uek.x86_64 #2
[337200.199814] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[337200.201943] xfsaild/sda3 D ffff8807bfd98140 0 820 2 0x00000000
[337200.203934] ffff880793493d18 0000000000000046 0000000000000000 ffff8807944cf000
[337200.206086] ffff88079490d900 ffff880793494000 0000000000000000 ffff8807944cf000
[337200.208203] ffff880794b98d28 ffff88079d97f000 ffff880793493d38 ffffffff8174c947
[337200.210318] Call Trace:
[337200.211507] [<ffffffff8174c947>] schedule+0x37/0x90
[337200.213195] [<ffffffffa0336dec>] _xfs_log_force+0x1bc/0x2b0 [xfs]
[337200.214989] [<ffffffff810ba380>] ? wake_up_state+0x20/0x20
[337200.216709] [<ffffffff810f5e00>] ? internal_add_timer+0xb0/0xb0
[337200.218523] [<ffffffffa0336f11>] xfs_log_force+0x31/0x90 [xfs]
[337200.220304] [<ffffffffa03428f1>] xfsaild+0x161/0x730 [xfs]
[337200.222015] [<ffffffff8174c2fe>] ? __schedule+0x23e/0x850
[337200.223721] [<ffffffffa0342790>] ? xfs_trans_ail_cursor_first+0xb0/0xb0 [xfs]
[337200.225687] [<ffffffff810ab51a>] kthread+0xda/0xf0
[337200.227356] [<ffffffff8174c2fe>] ? __schedule+0x23e/0x850
[337200.229044] [<ffffffff810ab440>] ? kthread_create_on_node+0x1b0/0x1b0
[337200.230886] [<ffffffff817521b8>] ret_from_fork+0x58/0x90
[337200.232548] [<ffffffff810ab440>] ? kthread_create_on_node+0x1b0/0x1b0
[337200.234394] INFO: task auditd:1047 blocked for more than 120 seconds.
[337200.236239] Not tainted 4.1.12-124.17.1.el7uek.x86_64 #2
[337200.237967] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[337200.240052] auditd D ffff8807bfc98140 0 1047 1 0x00000000
[337200.242041] ffff880793ba7b68 0000000000000086 ffff880794bedb18 ffff8807944ef000
[337200.244176] ffff880793ba7ba8 ffff880793ba8000 0000000000000000 7fffffffffffffff
[337200.246295] ffff8807bff157e8 ffffffff8174d250 ffff880793ba7b88 ffffffff8174c947
[337200.248416] Call Trace:
[337200.249582] [<ffffffff8174d250>] ? bit_wait+0x60/0x60
[337200.251245] [<ffffffff8174c947>] schedule+0x37/0x90
[337200.252851] [<ffffffff8174ff0c>] schedule_timeout+0x24c/0x2c0
[337200.254599] [<ffffffff813194c9>] ? blk_peek_request+0x99/0x2c0
[337200.256364] [<ffffffff8106a8ae>] ? kvm_clock_get_cycles+0x1e/0x20
[337200.258169] [<ffffffff810ffac4>] ? ktime_get+0x44/0xa0
[337200.259824] [<ffffffff8174c056>] io_schedule_timeout+0xa6/0x110
[337200.261581] [<ffffffff810d1056>] ? prepare_to_wait+0x56/0x90
[337200.263295] [<ffffffff8174d26f>] bit_wait_io+0x1f/0x70
[337200.264917] [<ffffffff8174cdea>] __wait_on_bit+0x6a/0xa0
[337200.266568] [<ffffffff8119a09b>] wait_on_page_bit+0xcb/0xf0
[337200.268262] [<ffffffff810d14f0>] ? autoremove_wake_function+0x40/0x40
[337200.270112] [<ffffffff8119a1c9>] filemap_fdatawait_range+0x109/0x1c0
[337200.271963] [<ffffffffa030b9f3>] ? xfs_vm_writepages+0x43/0x50 [xfs]
[337200.273798] [<ffffffff811a7ce1>] ? do_writepages+0x21/0x50
[337200.275499] [<ffffffff8119c175>] ? __filemap_fdatawrite_range+0x65/0x90
[337200.277354] [<ffffffff8119c2af>] filemap_write_and_wait_range+0x3f/0x70
[337200.279230] [<ffffffffa0317a6e>] xfs_file_fsync+0x6e/0x220 [xfs]
[337200.280947] [<ffffffff8175321e>] ? apic_timer_interrupt+0x10e/0x1a0
[337200.282741] [<ffffffff8124d680>] vfs_fsync_range+0x40/0xb0
[337200.284377] [<ffffffff8110e940>] ? SyS_futex+0x80/0x180
[337200.285961] [<ffffffff8124d74d>] do_fsync+0x3d/0x70
[337200.287473] [<ffffffff81751c9f>] ? system_call_after_swapgs+0xe9/0x18e
[337200.289253] [<ffffffff81751c98>] ? system_call_after_swapgs+0xe2/0x18e
[337200.291063] [<ffffffff81751c91>] ? system_call_after_swapgs+0xdb/0x18e
[337200.292841] [<ffffffff8124da40>] SyS_fsync+0x10/0x20
[337200.294332] [<ffffffff81751d5c>] system_call_fastpath+0x18/0xd6

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution


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