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All,
On 5/21/13 1:25 PM, James Snider wrote:
> [error occurred during error reporting (printing native stack), id
> 0xc0000005]
>
> Java frames: (J=compiled Java code, j=interpreted, Vv=VM code) j
> org.apache.tomcat.jni.Socket.sendbb(JII)I+0
The only line of code in Socket.sendbb that could possibly(*) be
causing a SEGV is this one:
ss = (*s->net->send)(s->opaque, s->jsbbuff + offset + sent, &wr);
Both s->opaque and s->jsbuff have been null-checked via assertions(*)
so only s->net or s->net->send could be null. I don't know enough
about how tcnative works with APR to know which one is more likely, or
whether this is a safe-fail situation (because some wrapper data has
been blanked-out and discarded) or if it is a potential security
problem (overwriting a later response).
- -chris
* The assertions themselves could be causing a problem, as they look
like this:
TCN_ASSERT(s->opaque != NULL);
TCN_ASSERT(s->jsbbuff != NULL);
So, if "s" is null, it could cause the seg fault. Since "s" is
passed-in from Java code (it's a jint), it probably should be checked
for NULL before dereferencing it.
- -chris
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