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Fix for 1st-gen Ryzen crashes

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This commit is contained in:
SChernykh 2019-12-27 12:40:38 +02:00
parent 99826a6b51
commit 3a2941b719
10 changed files with 102 additions and 9 deletions
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38
src/crypto/rx/Rx_linux.cpp
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@ -43,6 +43,8 @@
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <signal.h>
#include <ucontext.h>
namespace xmrig {
@ -178,6 +180,29 @@ static bool wrmsr(const MsrItems &preset, bool save)
}
static void MainLoopHandler(int sig, siginfo_t *info, void *ucontext)
{
# if defined(__x86_64__) || defined(__amd64__)
ucontext_t *ucp = (ucontext_t*) ucontext;
LOG_INFO(YELLOW_BOLD("%s at %p"), (sig == SIGSEGV) ? "SIGSEGV" : "SIGILL", ucp->uc_mcontext.gregs[REG_RIP]);
void* p = reinterpret_cast<void*>(ucp->uc_mcontext.gregs[REG_RIP]);
const std::pair<const void*, const void*>& loopBounds = xmrig::Rx::getMainLoopBounds();
if ((loopBounds.first <= p) && (p < loopBounds.second)) {
ucp->uc_mcontext.gregs[REG_RIP] = reinterpret_cast<size_t>(loopBounds.second);
}
else {
abort();
}
# endif
}
thread_local std::pair<const void*, const void*> Rx::mainLoopBounds = { nullptr, nullptr };
} // namespace xmrig
@ -208,3 +233,16 @@ void xmrig::Rx::msrDestroy()
LOG_ERR(CLEAR "%s" RED_BOLD_S "failed to restore initial state" BLACK_BOLD(" (%" PRIu64 " ms)"), tag, Chrono::steadyMSecs() - ts);
}
}
void xmrig::Rx::SetupMainLoopExceptionFrame()
{
# if defined(__x86_64__) || defined(__amd64__)
struct sigaction act = {};
act.sa_sigaction = MainLoopHandler;
act.sa_flags = SA_RESTART | SA_SIGINFO;
sigaction(SIGSEGV, &act, nullptr);
sigaction(SIGILL, &act, nullptr);
# endif
}