[86390.829326] BUG: unable to handle kernel paging request at 0000000100620100
[86390.829510] IP: [<ffffffff9ed7f2ad>] strnlen+0xd/0x40
[86390.829632] PGD 0 
[86390.829685] Oops: 0000 [#1] SMP 
[86390.829766] Modules linked in: AliSecGuard(OE) binfmt_misc xt_conntrack iptable_filter iptable_nat nf_nat_ipv4 arc4 emp(OE) nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat nf_conntrack eudp(E) libcrc32c ppdev intel_powerclamp crc32_pclmul ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd parport_pc virtio_balloon parport i2c_piix4 pcspkr ip_tables ext4 mbcache jbd2 cirrus drm_kms_helper syscopyarea sysfillrect virtio_net virtio_console virtio_blk sysimgblt fb_sys_fops ttm crct10dif_pclmul crct10dif_common drm crc32c_intel serio_raw floppy virtio_pci virtio_ring virtio drm_panel_orientation_quirks
[86390.831199] CPU: 2 PID: 1311 Comm: KeepAlive Tainted: G           OE  ------------   3.10.0-957.el7.x86_64 #1
[86390.831410] Hardware name: Alibaba Cloud Alibaba Cloud ECS, BIOS 9e9f1cc 04/01/2014
[86390.831580] task: ffff97c77add9040 ti: ffff97c77ade0000 task.ti: ffff97c77ade0000
[86390.831742] RIP: 0010:[<ffffffff9ed7f2ad>]  [<ffffffff9ed7f2ad>] strnlen+0xd/0x40
......
[86390.833643] Call Trace:
[86390.833699]  [<ffffffff9ed8105b>] string.isra.7+0x3b/0xf0
[86390.833805]  [<ffffffff9ed82771>] vsnprintf+0x201/0x6a0
[86390.833908]  [<ffffffff9ed82c1d>] vscnprintf+0xd/0x30
[86390.834011]  [<ffffffff9ea9a24b>] vprintk_emit+0x11b/0x510
[86390.834143]  [<ffffffff9ea9a8a9>] ? vprintk_default+0x29/0x40
[86390.834277]  [<ffffffff9ed77ef0>] ? kobject_put+0x50/0x60
[86390.834407]  [<ffffffff9ea9a65f>] vprintk+0x1f/0x30
[86390.834517]  [<ffffffff9ea975ef>] __warn+0x7f/0x100
[86390.834618]  [<ffffffff9ea976cf>] warn_slowpath_fmt+0x5f/0x80
[86390.834746]  [<ffffffffc02e2b64>] ? close_eudp_mmap_dev+0x1b4/0x200 [eudp]
[86390.834896]  [<ffffffff9ed77ef0>] kobject_put+0x50/0x60
[86390.835013]  [<ffffffff9ec466f8>] cdev_put+0x18/0x30
[86390.835125]  [<ffffffff9ec4350a>] __fput+0x21a/0x260
[86390.835232]  [<ffffffff9ec4363e>] ____fput+0xe/0x10
[86390.835340]  [<ffffffff9eabe79b>] task_work_run+0xbb/0xe0
[86390.835459]  [<ffffffff9ea9dc61>] do_exit+0x2d1/0xa40
[86390.835568]  [<ffffffff9ea9e44f>] do_group_exit+0x3f/0xa0
[86390.835695]  [<ffffffff9eaaf24e>] get_signal_to_deliver+0x1ce/0x5e0
[86390.835830]  [<ffffffff9ea2b527>] do_signal+0x57/0x6f0
[86390.835942]  [<ffffffff9eac57e0>] ? hrtimer_get_res+0x50/0x50
[86390.836068]  [<ffffffff9ea2bc32>] do_notify_resume+0x72/0xc0
[86390.836202]  [<ffffffff9f175124>] int_signal+0x12/0x17
...