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8008560: [parfait] Null pointer deference in hotspot/src/os_cpu/bsd_x86/vm/os_bsd_x86.cpp

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Add null pointer check in signal handler

Reviewed-by: kvn
This commit is contained in:
Morris Meyer 2013-03-14 07:44:18 -07:00
parent bcbdbf9996
commit 46a623ec88
1 changed files with 1 additions and 1 deletions
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hotspot/src/os_cpu/bsd_x86/vm/os_bsd_x86.cpp
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@ -516,7 +516,7 @@ JVM_handle_bsd_signal(int sig,
// here if the underlying file has been truncated.
// Do not crash the VM in such a case.
CodeBlob* cb = CodeCache::find_blob_unsafe(pc);
nmethod* nm = cb->is_nmethod() ? (nmethod*)cb : NULL;
nmethod* nm = (cb != NULL && cb->is_nmethod()) ? (nmethod*)cb : NULL;
if (nm != NULL && nm->has_unsafe_access()) {
stub = StubRoutines::handler_for_unsafe_access();
}