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8257828: SafeFetch may crash if invoked in non-JavaThreads

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Reviewed-by: mdoerr, kbarrett, coleenp, dholmes
This commit is contained in:
Thomas Stuefe 2020-12-15 07:00:54 +00:00
parent 381021aebf
commit 3ab1dfeb8f
12 changed files with 114 additions and 95 deletions
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5
src/hotspot/os_cpu/linux_x86/os_linux_x86.cpp
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@ -221,11 +221,6 @@ bool PosixSignals::pd_hotspot_signal_handler(int sig, siginfo_t* info,
if (info != NULL && uc != NULL && thread != NULL) {
pc = (address) os::Posix::ucontext_get_pc(uc);
if (StubRoutines::is_safefetch_fault(pc)) {
os::Posix::ucontext_set_pc(uc, StubRoutines::continuation_for_safefetch_fault(pc));
return true;
}
#ifndef AMD64
// Halt if SI_KERNEL before more crashes get misdiagnosed as Java bugs
// This can happen in any running code (currently more frequently in