ldd 命令 libasan 未显示
我的开发机器中有一个二进制文件 ldd 命令不显示 libasan。但是当我将相同的二进制文件复制到另一台生产机器时。 ldd 命令显示 libasan。我不确定这是怎么发生的。请帮我。
## DEV VM ##
cohesity - main: ldd <path> | grep -i asan
cohesity - main: md5sum <path>
11152b37c616555eed06800ee499323a <path>
### Production machine ##
[support@suresh-test-005056af8cb9-node-1 ~]$ md5sum <path>
11152b37c616555eed06800ee499323a <path>
[support@suresh-test-005056af8cb9-node-1 ~]$ ldd <path> | grep -i asan
libasan.so.4 => <path to libasan> (0x00007f72595e7000)
[support@suresh-test-005056af8cb9-node-1 ~]$ I have a binary in my dev machine ldd command doesn't show libasan. But when I copy the same binary to another production machine. ldd command shows libasan. I am not sure How this happens. Please help me.
## DEV VM ##
cohesity - main: ldd <path> | grep -i asan
cohesity - main: md5sum <path>
11152b37c616555eed06800ee499323a <path>
### Production machine ##
[support@suresh-test-005056af8cb9-node-1 ~]$ md5sum <path>
11152b37c616555eed06800ee499323a <path>
[support@suresh-test-005056af8cb9-node-1 ~]$ ldd <path> | grep -i asan
libasan.so.4 => <path to libasan> (0x00007f72595e7000)
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ldd 命令输出取决于以下几项：
通过将主二进制文件复制到另一台机器，您只能保证“步骤 1”是相同的。
很可能“步骤 2”中的共享库之一是在
node-1上使用-fsanitize=address构建的，但不是在“dev VM”中构建的。您可以使用 readelf -d /path/to/foo.so | 找出哪个库。 grep NEEDED.*libasan.so.4 在 ldd 输出中的每个库上。
The
lddcommand output depends on a few things:preloadlibraries, etc.)By copying the main binary to a different machine, you only guaranteed that "step 1" is identical.
Chances are that one of the shared libraries in "step 2" has been built with
-fsanitize=addressonnode-1, but not in "dev VM".You can find out which library that is by using
readelf -d /path/to/foo.so | grep NEEDED.*libasan.so.4on each of the libraries inlddoutput.