Christopher, I'll try turning off the APR next time I get a crashing form.
Thanks, Chad ________________________________________ From: Christopher Schultz <ch...@christopherschultz.net> Sent: Friday, October 03, 2014 2:01 PM To: Tomcat Users List Subject: Re: Tomcat JVM Crash -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Jess, On 10/3/14 2:46 PM, Jess Holle wrote: > On 10/3/2014 1:11 PM, Mark Thomas wrote: >> On 03/10/2014 17:07, Chad Maniccia wrote: >>> Hi, >>> >>> I have discovered the source of the JVM crashes. I figured it >>> best to share with the group because it is quite odd. I have >>> tested this and confirmed with a colleague so as odd as it >>> sounds it is reproducible. >>> >>> The crash is caused by a combination of Chrome web browser, >>> HTTPS, and posting a form with an exact amount of data. If you >>> use HTTP to submit the form=no crash, If you use IE and >>> HTTPS=no crash. If you add/remove a single character to the >>> form=no crash. I have attached the latest crash log. Please >>> note that Tomcat crashes before it logs the request to >>> "localhost_access_log" and before it passes the request to the >>> servlet. This problem is present between multiple versions of >>> Java and Tomcat. >>> >>> Here is another user reporting a similar issue. >>> >>> https://bugs.openjdk.java.net/browse/JDK-8049855 >>> >>> I did like they suggested and added the following line. This >>> doesn't fix the problem but it prevents the server from >>> crashing, you get a blank page instead. Why is this? >>> >>> -XX:CompileCommand=exclude,com/sun/crypto/provider/*.* >>> >>> Whose problem is this: Google, Apache Tomcat, GoDaddy(SSL), or >>> Oracle? >> Oracle. >> >> Regardless of whether the input is valid or not it should not >> trigger a JVM crash. > > Agreed. > > That said, one thing that really bothers me about including /any/ > native additional native libraries (ala JNI) in a Java process > (but particularly a Java /server/ process) is that when the JVM > experiences a native crash you cannot categorically blame the JVM > vendor in this case. > > If you /don't/ have any additional native code, then you /can > /categorically blame the JVM vendor -- clear and simple. > > This is one reason of several reasons that for me using APR in > Tomcat is a non-starter. > > [Yes, you could always reproduce the issue with Java connectors, > but that's painful and there are, of course, other reason for > avoiding native libraries, e.g. having to build them across the > numerous architectures one supports, rather than simple > write-once-run-anywhere.] The thread that evidently crashed the JVM was a NIO thread, but it's a good catch that there were APR threads running as well. Chad, can you disable the APR connector and still reproduce the problem? Can you create a set of step-by-step instructions for reproducing this problem so someone outside of your environment can make it happen? - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org iQIcBAEBCAAGBQJULvKSAAoJEBzwKT+lPKRYx6YP/RGiKXeJmLwU9R+jdYP8OSFv P5xYbMNsNQlGy9rHt9jSH1YH4fOGZRTGByoeLR9gno+9R3sFr5ABg8qXoQD/tqTS RN9AYHgTjSrraNEG3/LOvHT7KlD+EpINo5iTHHWxFsyltra4k16VgdNX9ueVkAQM ezE1HWorl6yMPFND/itgftqtQiik0ZPLu0UYGuAA0vbmdJgzYj1xFquP/4xy/0qD T8WvHjWcWYUHouE3MJ3EGhh+kO1XdCRgLH8TvV2OQDvjPCo2pawpC2s816KEf7XM xU/AbIDOxE9oM5ccJABEQywHMeC9n2FYwduFe0Ar42qsLIbaqRpUIF7yDRAjokW9 o092uzr626k+l4VlJdTWDH1I0h5DBa3kCkWehBbIAneGbo2arDbhNmtoBMwQCCBo TKdRUSeeg7CbjpL2DavPLMZFeSSnp7wYnVMyIg9hRHj2X9gOSo/FjxzCfd7cBW+s QkoSVR8Wc5mMylt4XED4BpzwxQb1HX2efSJkGC5Rqn4HXjekG7itbFrPveQ5n0ff /D//Pb3OhxoD0E1Eh1ubb8QHi12LoJPFDIDQl4jQ0L2iaEvFQZOYdmyeOJwRQlvA biXbUinIZPsYWH25QzzVOFsXhD2Oycjp9+XAjFJsuKn+hGpgViqYAEXq1xrU8KFh jqhYIaRMyXVH3P//Xffo =Rsxn -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
