[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://bz.apache.org/bugzilla/show_bug.cgi?id=56313

Mark Thomas  changed:

   What|Removed |Added

 CC||kevin.g.flynn@thomsonreuter
   ||s.com

--- Comment #18 from Mark Thomas  ---
*** Bug 57140 has been marked as a duplicate of this bug. ***

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://bz.apache.org/bugzilla/show_bug.cgi?id=56313

Mark Thomas  changed:

   What|Removed |Added

 CC||martin.ha...@ysoft.com

--- Comment #17 from Mark Thomas  ---
*** Bug 56415 has been marked as a duplicate of this bug. ***

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://bz.apache.org/bugzilla/show_bug.cgi?id=56313

Mark Thomas  changed:

   What|Removed |Added

 CC||kmash...@yahoo.com

--- Comment #16 from Mark Thomas  ---
*** Bug 55797 has been marked as a duplicate of this bug. ***

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://bz.apache.org/bugzilla/show_bug.cgi?id=56313

--- Comment #14 from Pavel pavel.re...@gmail.com ---
Same issue here, tried using the latest tomcat 7/8 but getting the same error
and tomcat crashes.

Any updates on this? (currently the only solution is to switch to NIO)

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://bz.apache.org/bugzilla/show_bug.cgi?id=56313

Mark Thomas ma...@apache.org changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |DUPLICATE

--- Comment #15 from Mark Thomas ma...@apache.org ---


*** This bug has been marked as a duplicate of bug 57653 ***

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://issues.apache.org/bugzilla/show_bug.cgi?id=56313

--- Comment #9 from Christopher Schultz ch...@christopherschultz.net ---
Could you provide a JMeter test case? I'm sure that would be helpful. I'm not
win32 dev, but I'm sure something that can reproduce the issue would be helpful
to whoever looks at this.

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://issues.apache.org/bugzilla/show_bug.cgi?id=56313

Timcesq ti_m...@poczta.fm changed:

   What|Removed |Added

 OS|All |Windows 8

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://issues.apache.org/bugzilla/show_bug.cgi?id=56313

--- Comment #10 from Timcesq ti_m...@poczta.fm ---
Created attachment 31441
  -- https://issues.apache.org/bugzilla/attachment.cgi?id=31441action=edit
JMeter test plan

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://issues.apache.org/bugzilla/show_bug.cgi?id=56313

Timcesq ti_m...@poczta.fm changed:

   What|Removed |Added

 OS||All

--- Comment #11 from Timcesq ti_m...@poczta.fm ---
I used a debugger to locate the crash address in the source code. It looks like
the crash occurs inside the function Java_org_apache_tomcat_jni_Poll_poll,
specifically inside the following block:

for (i = 0; i  num; i++) {
tcn_socket_t *s = (tcn_socket_t *)fd-client_data;
p-set[i*2+0] = (jlong)(fd-rtnevents);
p-set[i*2+1] = P2J(s);
if (remove) {
apr_pollset_remove(p-pollset, fd);
APR_RING_REMOVE(s-pe, link);
APR_RING_INSERT_TAIL(p-dead_ring, s-pe, tcn_pfde_t, link);
s-pe = NULL;
p-nelts--;
#ifdef TCN_DO_STATISTICS
p-sp_removed++;
#endif
}
else {
/* Update last active with the current time
* after the poll call.
*/
s-last_active = now;
}
fd ++;
}

The crash address suggests that a read of the s-pe variable inside the
if(remove) block fails (the variable is null).

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://issues.apache.org/bugzilla/show_bug.cgi?id=56313

--- Comment #12 from Timcesq ti_m...@poczta.fm ---
What I meant is that the s-pe is NULL, so a read from that address crashes the
application.

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://issues.apache.org/bugzilla/show_bug.cgi?id=56313

--- Comment #13 from Timcesq ti_m...@poczta.fm ---
A quick workaround would be to check for NULL before doing the read. However,
if the library is designed so that there shouldn't be any NULLs at this point
in the code, such patch would only mask the underlying bug (a race condition
maybe?).

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://issues.apache.org/bugzilla/show_bug.cgi?id=56313

ti_m...@poczta.fm changed:

   What|Removed |Added

 OS||Windows 8

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://issues.apache.org/bugzilla/show_bug.cgi?id=56313

--- Comment #1 from ti_m...@poczta.fm ---
Created attachment 31436
  -- https://issues.apache.org/bugzilla/attachment.cgi?id=31436action=edit
another log - same issue

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://issues.apache.org/bugzilla/show_bug.cgi?id=56313

ti_m...@poczta.fm changed:

   What|Removed |Added

 OS||All

--- Comment #2 from ti_m...@poczta.fm ---
APR version is 1.5. OpenSSL 1.0.1f.

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://issues.apache.org/bugzilla/show_bug.cgi?id=56313

--- Comment #3 from ti_m...@poczta.fm ---
Created attachment 31437
  -- https://issues.apache.org/bugzilla/attachment.cgi?id=31437action=edit
third one - same issue. Just to show that this is a recurring thing.

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://issues.apache.org/bugzilla/show_bug.cgi?id=56313

--- Comment #4 from Konstantin Kolinko knst.koli...@gmail.com ---
 Tomcat 8 crashed

What exactly version of Tomcat 8.0.x ?

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://issues.apache.org/bugzilla/show_bug.cgi?id=56313

--- Comment #5 from ti_m...@poczta.fm ---
8.0.3 - currently the latest one, AFAIK.

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://issues.apache.org/bugzilla/show_bug.cgi?id=56313

--- Comment #6 from Christopher Schultz ch...@christopherschultz.net ---
Does high-load appear to be a required factor?

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://issues.apache.org/bugzilla/show_bug.cgi?id=56313

--- Comment #7 from Timcesq ti_m...@poczta.fm ---
Apaprently - yes. I wasn't able to reproduce it with low number of concurrent
users. But it's hard to say if it would never crash or it's just that it would
crash -- only much later.

I used JMeter to simulate high load.

The whole server works flawlessly (including very low request-response latency)
until the very end when it crashes. Nothing exceptional happens in the system:
no unusual disk activity, no other CPU- or RAM-hungry processes. It just
crashes suddenly for no obvious reason.

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[Bug 56313] Tomcat 8 crashes in tcnative-1.dll+0x7923

[bugzilla]

https://issues.apache.org/bugzilla/show_bug.cgi?id=56313

--- Comment #8 from Timcesq ti_m...@poczta.fm ---
With 4000 users, it crashes in less than a minute (Used JMeter to test).

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