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[Kees Cook <kees@xxxxxxxxxx>]

Public bug reported:

During default startup, openjdk-6 appears to allocate heap memory based
on something different than getrlimit(RLIMIT_AS):

$ free
             total       used       free     shared    buffers     cached
Mem:       8000320    7907296      93024          0     574804    4336192
-/+ buffers/cache:    2996300    5004020
Swap:      3903672     301564    3602108

$ bootstrap/jdk1.6.0/bin/java -version
java version "1.6.0_0"
OpenJDK 1.4 (6b14-0ubuntu15~kees1.fortify) Runtime Environment (build 1.6.0_0-b14)
OpenJDK 64-Bit Server VM (build 14.0-b08, mixed mode)

$ ulimit -v 1024000

$ bootstrap/jdk1.6.0/bin/java -version
Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.

$ strace -f -e trace=mmap bootstrap/jdk1.6.0/bin/java -version
...
[pid  1187] mmap(NULL, 2225078272, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = -1 ENOMEM (Cannot allocate memory)
...

$ bootstrap/jdk1.6.0/bin/java -Xmx128m -version
java version "1.6.0_0"
OpenJDK 1.4 (6b14-0ubuntu15~kees1.fortify) Runtime Environment (build 1.6.0_0-b14)
OpenJDK 64-Bit Server VM (build 14.0-b08, mixed mode)

** Affects: openjdk-6 (Ubuntu)
     Importance: Undecided
         Status: New

-- 
allocates heap memory beyond RLIMIT_AS
https://bugs.launchpad.net/bugs/338852
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Status in “openjdk-6” source package in Ubuntu: New

Bug description:
During default startup, openjdk-6 appears to allocate heap memory based on something different than getrlimit(RLIMIT_AS):

$ free
             total       used       free     shared    buffers     cached
Mem:       8000320    7907296      93024          0     574804    4336192
-/+ buffers/cache:    2996300    5004020
Swap:      3903672     301564    3602108

$ bootstrap/jdk1.6.0/bin/java -version
java version "1.6.0_0"
OpenJDK 1.4 (6b14-0ubuntu15~kees1.fortify) Runtime Environment (build 1.6.0_0-b14)
OpenJDK 64-Bit Server VM (build 14.0-b08, mixed mode)

$ ulimit -v 1024000

$ bootstrap/jdk1.6.0/bin/java -version
Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.

$ strace -f -e trace=mmap bootstrap/jdk1.6.0/bin/java -version
...
[pid  1187] mmap(NULL, 2225078272, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = -1 ENOMEM (Cannot allocate memory)
...

$ bootstrap/jdk1.6.0/bin/java -Xmx128m -version
java version "1.6.0_0"
OpenJDK 1.4 (6b14-0ubuntu15~kees1.fortify) Runtime Environment (build 1.6.0_0-b14)
OpenJDK 64-Bit Server VM (build 14.0-b08, mixed mode)