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[asan] add option: handle_sigill

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llvm-svn: 255588
This commit is contained in:
Kostya Serebryany
2015-12-15 00:33:45 +00:00
parent ddbdb1e0be
commit 354bbb2ccd
5 changed files with 32 additions and 0 deletions
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2
compiler-rt/lib/asan/asan_posix.cc
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@@ -77,6 +77,8 @@ void AsanOnDeadlySignal(int signo, void *siginfo, void *context) {
ReportStackOverflow(sig);
else if (signo == SIGFPE)
ReportDeadlySignal("FPE", sig);
else if (signo == SIGILL)
ReportDeadlySignal("ILL", sig);
else
ReportDeadlySignal("SEGV", sig);
}

2
compiler-rt/lib/sanitizer_common/sanitizer_flags.inc
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@@ -79,6 +79,8 @@ COMMON_FLAG(bool, handle_segv, SANITIZER_NEEDS_SEGV,
"If set, registers the tool's custom SIGSEGV/SIGBUS handler.")
COMMON_FLAG(bool, handle_abort, false,
"If set, registers the tool's custom SIGABRT handler.")
COMMON_FLAG(bool, handle_sigill, false,
"If set, registers the tool's custom SIGILL handler.")
COMMON_FLAG(bool, handle_sigfpe, true,
"If set, registers the tool's custom SIGFPE handler.")
COMMON_FLAG(bool, allow_user_segv_handler, false,

2
compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
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@@ -1114,6 +1114,8 @@ AndroidApiLevel AndroidGetApiLevel() {
bool IsDeadlySignal(int signum) {
if (common_flags()->handle_abort && signum == SIGABRT)
return true;
if (common_flags()->handle_sigill && signum == SIGILL)
return true;
if (common_flags()->handle_sigfpe && signum == SIGFPE)
return true;
return (signum == SIGSEGV || signum == SIGBUS) && common_flags()->handle_segv;

1
compiler-rt/lib/sanitizer_common/sanitizer_posix_libcdep.cc
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@@ -190,6 +190,7 @@ void InstallDeadlySignalHandlers(SignalHandlerType handler) {
MaybeInstallSigaction(SIGBUS, handler);
MaybeInstallSigaction(SIGABRT, handler);
MaybeInstallSigaction(SIGFPE, handler);
MaybeInstallSigaction(SIGILL, handler);
}
#endif // SANITIZER_GO

25
compiler-rt/test/sanitizer_common/TestCases/Linux/ill.cc Normal file
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@@ -0,0 +1,25 @@
// Test the handle_sigill option.
// RUN: %clang %s -o %t -O1
// RUN: not --crash %run %t 2>&1 | FileCheck --check-prefix=CHECK0 %s
// RUN: %env_tool_opts=handle_sigill=0 not --crash %run %t 2>&1 | FileCheck --check-prefix=CHECK0 %s
// RUN: %env_tool_opts=handle_sigill=1 not %run %t 2>&1 | FileCheck --check-prefix=CHECK1 %s
// FIXME: implement in other sanitizers, not just asan.
// XFAIL: msan
// XFAIL: lsan
// XFAIL: tsan
//
#include <assert.h>
#include <stdio.h>
#include <sanitizer/asan_interface.h>
void death() {
fprintf(stderr, "DEATH CALLBACK\n");
}
int main(int argc, char **argv) {
__sanitizer_set_death_callback(death);
__builtin_trap();
}
// CHECK1: ERROR: {{.*}}Sanitizer:
// CHECK1: DEATH CALLBACK
// CHECK0-NOT: Sanitizer