The code to acquire CodeCache_lock in largest_free_block in 7033779 creates ordering problems with ttyLocker.

;; Using jvm: "/export/local/common/jdk/baseline/solaris-i586/jre/lib/i386/server/libjvm.so"
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  Internal Error (/tmp/jprt/P1/B/230440.never/source/src/share/vm/runtime/mutex.cpp:1307), pid=10761, tid=10
#  fatal error: acquiring lock CodeCache_lock/1 out of order with lock tty_lock/0 -- possible deadlock
#
# JRE version: 7.0-b136
# Java VM: Java HotSpot(TM) Server VM (21.0-b05-internal-201104062304.never.7034513-fastdebug compiled mode solaris-x86 )
# Core dump written. Default location: /export/local/46611.JDK7.NIGHTLY.VM+solaris-i586_javase_client_comp_JT_HS/results/workDir/closed/compiler/6457611/log/core or core.10761
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
#

---------------  T H R E A D  ---------------

Current thread (0x08263400):  JavaThread "C2 CompilerThread1" daemon [_thread_in_vm, id=10, stack(0x76c1c000,0x76c9c000)]

Stack: [0x76c1c000,0x76c9c000],  sp=0x76c9afe0,  free space=507k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V  [libjvm.so+0x1cf4da6]  void VMError::report(outputStream*)+0x902;;  void VMError::report(outputStream*)+0x902
V  [libjvm.so+0x1cf5f59]  void VMError::report_and_die()+0x56d;;  void VMError::report_and_die()+0x56d
V  [libjvm.so+0xafda2b]  void report_fatal(const char*,int,const char*)+0x56f;;  void report_fatal(const char*,int,const char*)+0x56f
V  [libjvm.so+0x179380c]  void Monitor::lock_without_safepoint_check()+0x58c;;  void Monitor::lock_without_safepoint_check()+0x58c
V  [libjvm.so+0x9667d9]  void CodeCache::log_state(outputStream*)+0x85;;  void CodeCache::log_state(outputStream*)+0x85
V  [libjvm.so+0x1b51ac0]  void NMethodSweeper::log_sweep(const char*,const char*,...)+0xdc;;  void NMethodSweeper::log_sweep(const char*,const char*,...)+0xdc
V  [libjvm.so+0x1b50c1a]  void NMethodSweeper::sweep_code_cache()+0x88a;;  void NMethodSweeper::sweep_code_cache()+0x88a
V  [libjvm.so+0x1b502f1]  void NMethodSweeper::possibly_sweep()+0x109;;  void NMethodSweeper::possibly_sweep()+0x109
V  [libjvm.so+0x9d9e7f]  void CompileBroker::compiler_thread_loop()+0x45f;;  void CompileBroker::compiler_thread_loop()+0x45f
V  [libjvm.so+0x1bfa762]  void compiler_thread_entry(JavaThread*,Thread*)+0x2e;;  void compiler_thread_entry(JavaThread*,Thread*)+0x2e
V  [libjvm.so+0x1becdb9]  void JavaThread::thread_main_inner()+0x179;;  void JavaThread::thread_main_inner()+0x179
V  [libjvm.so+0x1beca69]  void JavaThread::run()+0x619;;  void JavaThread::run()+0x619
V  [libjvm.so+0x1854693]  java_start+0x6fb;;  java_start+0x6fb
C  [libc.so.1+0xa59a9]  _thr_setup+0x4e;;  _thr_setup+0x4e
C  [libc.so.1+0xa5c90]  __moddi3+0x60;;  _lwp_start+0x0