failed to attach uprobe on libssl version v1.0.1

[wenhuwang]

env

• kernel version: 5.4.207-1.el7.elrepo.x86_64
• coroot-node-agent version: 1.19.7

logs

coroot-node-agent logs as follows:

I0716 08:16:04.352984   48665 tls.go:107] pid=11925 libssl_version=v1.1.1: libssl uprobes attached
E0716 14:03:02.729460   48665 tls.go:92] pid=45766 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 14:03:02.729460   48665 tls.go:92] pid=45766 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 14:03:02.729460   48665 tls.go:92] pid=45766 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 14:03:02.729460   48665 tls.go:92] pid=45766 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 14:03:15.061455   48665 tls.go:92] pid=46161 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 14:03:15.061455   48665 tls.go:92] pid=46161 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 14:03:15.061455   48665 tls.go:92] pid=46161 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 14:03:15.061455   48665 tls.go:92] pid=46161 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 14:03:27.612450   48665 tls.go:92] pid=46472 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 14:03:27.612450   48665 tls.go:92] pid=46472 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 14:03:27.612450   48665 tls.go:92] pid=46472 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 14:03:27.612450   48665 tls.go:92] pid=46472 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 17:35:50.173498   48665 tls.go:92] pid=31650 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 17:35:50.173498   48665 tls.go:92] pid=31650 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 17:35:50.173498   48665 tls.go:92] pid=31650 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 17:35:50.173498   48665 tls.go:92] pid=31650 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 18:30:02.969410   48665 tls.go:92] pid=18085 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 18:30:02.969410   48665 tls.go:92] pid=18085 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 18:30:02.969410   48665 tls.go:92] pid=18085 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 18:30:02.969410   48665 tls.go:92] pid=18085 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 18:30:13.897468   48665 tls.go:92] pid=18303 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 18:30:13.897468   48665 tls.go:92] pid=18303 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 18:30:13.897468   48665 tls.go:92] pid=18303 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found
E0716 18:30:13.897468   48665 tls.go:92] pid=18303 libssl_version=v1.0.1: failed to attach uprobe: symbol SSL_write_ex: not found

libssl file path is /usr/lib64/libssl.so.1.0.2k with version v1.0.1, this file only have SSL_read and SSL_write symbol.

[wenhuwang]

SSL_read_ex() and SSL_write_ex() function only exists in openssl v1.1.1 and higher version. refer to: openssl/openssl@4ee7d3f and openssl/openssl@7ee8627#diff-38e1eecb6013c2fe8bf194e5020ce1afd6e31c371d7849e041464ad822fe745bR1653