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Posted to common-dev@hadoop.apache.org by "V. Karthik Kumar (JIRA)" <ji...@apache.org> on 2013/06/09 02:21:20 UTC
[jira] [Created] (HADOOP-9635) Potential Stack Overflow in
DomainSocket.c
V. Karthik Kumar created HADOOP-9635:
----------------------------------------
Summary: Potential Stack Overflow in DomainSocket.c
Key: HADOOP-9635
URL: https://issues.apache.org/jira/browse/HADOOP-9635
Project: Hadoop Common
Issue Type: Bug
Components: native
Affects Versions: 2.3.0
Environment: OSX 10.8
Reporter: V. Karthik Kumar
When I was running on OSX, the DataNode was segfaulting. On investigation, it was tracked down to this code. A potential stack overflow was also identified.
{code}
utfLength = (*env)->GetStringUTFLength(env, jstr);
if (utfLength > sizeof(path)) {
jthr = newIOException(env, "path is too long! We expected a path "
"no longer than %zd UTF-8 bytes.", sizeof(path));
goto done;
}
// GetStringUTFRegion does not pad with NUL
(*env)->GetStringUTFRegion(env, jstr, 0, utfLength, path);
...
//strtok_r can set rest pointer to NULL when no tokens found.
//Causes JVM to crash in rest[0]
for (check[0] = '/', check[1] = '\0', rest = path, token = "";
token && rest[0];
token = strtok_r(rest, "/", &rest)) {
{code}
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