回复: 回复: 回复: 回复: JVM crashes constantly when High GC happens

[shang xinli]

Hi Andrew/Thomas,

That bug was what I opened for this issue.

The smartctl version is 6.4. One of our hardware engineers found the command is as below.

ioctl(3, SG_IO, {'S', SG_DXFER_FROM_DEV, cmd[16]=[85, 09, 0e, 00, 00, 00, 40, 00, 03, 00, 00, 00, 00, 00, 2f, 00], mx_sb_len=32, iovec_count=0, dxfer_len=32768, timeout=20000, flags=0, data[32768]=["\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...], status=00, masked_status=00, sb[0]=[], host_status=0, driver_status=0, resid=0, duration=5024, info=0}) = 0

Xinli


=

________________________________
发件人: Andrew Haley <aph at redhat.com>
发送时间: 2019年4月26日 1:58
收件人: Thomas Schatzl; shang xinli
抄送: Kim Barrett; shade at redhat.com; hotspot-gc-dev at openjdk.java.net
主题: Re: 回复: 回复: 回复: JVM crashes constantly when High GC happens

On 4/26/19 7:41 AM, Thomas Schatzl wrote:
>   by coincidence I just found a similar recent issue with smartctl in
> the bug tracker: https://bugs.openjdk.java.net/browse/JDK-8220216
>
> Same issue here: you run smartctl, and the VM crashes with random
> apparent memory overwrite, in this case modifying some internal object
> metadata too.

What smartctl command do you use? And what smertctl/kernel versions?

--
Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671
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