https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229020
Bug ID: 229020
Summary: Potential memory leak in sbin/umount
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Many People
Priority: ---
Component: bin
Assignee: b...@freebsd.org
Reporter: thomas.barabo...@fkie.fraunhofer.de
Created attachment 194258
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=194258&action=edit
Possible patch
There may be a potential memory leak in sbin/umount. In function umountfs there
is a call to getaddrinfo. According to getaddrinfo.3:
"All of the information returned by getaddrinfo() is dynamically allo-
cated: the addrinfo structures themselves as well as the socket address
structures and the canonical host name strings included in the addrinfo
structures.
Memory allocated for the dynamically allocated structures created by a
successful call to getaddrinfo() is released by the freeaddrinfo() func-
tion. The ai pointer should be a addrinfo structure created by a call to
getaddrinfo()."
However, the whole file umount.c does not make a single call to freeaddrinfo().
It would be better to free the addrinfo with freeaddrinfo to prevent a
potential memory leak.
Can you confirm this problem?
I've attached a patch as a possible solution.
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