diff options
Diffstat (limited to 'lib/sanitizer_common/sanitizer_symbolizer_report.cpp')
| -rw-r--r-- | lib/sanitizer_common/sanitizer_symbolizer_report.cpp | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/lib/sanitizer_common/sanitizer_symbolizer_report.cpp b/lib/sanitizer_common/sanitizer_symbolizer_report.cpp index d6699f3ed..fe9ea1a82 100644 --- a/lib/sanitizer_common/sanitizer_symbolizer_report.cpp +++ b/lib/sanitizer_common/sanitizer_symbolizer_report.cpp @@ -191,9 +191,14 @@ static void ReportDeadlySignalImpl(const SignalContext &sig, u32 tid, SanitizerCommonDecorator d; Printf("%s", d.Warning()); const char *description = sig.Describe(); - Report("ERROR: %s: %s on unknown address %p (pc %p bp %p sp %p T%d)\n", - SanitizerToolName, description, (void *)sig.addr, (void *)sig.pc, - (void *)sig.bp, (void *)sig.sp, tid); + if (sig.is_memory_access && !sig.is_true_faulting_addr) + Report("ERROR: %s: %s on unknown address (pc %p bp %p sp %p T%d)\n", + SanitizerToolName, description, (void *)sig.pc, (void *)sig.bp, + (void *)sig.sp, tid); + else + Report("ERROR: %s: %s on unknown address %p (pc %p bp %p sp %p T%d)\n", + SanitizerToolName, description, (void *)sig.addr, (void *)sig.pc, + (void *)sig.bp, (void *)sig.sp, tid); Printf("%s", d.Default()); if (sig.pc < GetPageSizeCached()) Report("Hint: pc points to the zero page.\n"); @@ -203,7 +208,11 @@ static void ReportDeadlySignalImpl(const SignalContext &sig, u32 tid, ? "WRITE" : (sig.write_flag == SignalContext::READ ? "READ" : "UNKNOWN"); Report("The signal is caused by a %s memory access.\n", access_type); - if (sig.addr < GetPageSizeCached()) + if (!sig.is_true_faulting_addr) + Report("Hint: this fault was caused by a dereference of a high value " + "address (see registers below). Dissassemble the provided pc " + "to learn which register value was used.\n"); + else if (sig.addr < GetPageSizeCached()) Report("Hint: address points to the zero page.\n"); } MaybeReportNonExecRegion(sig.pc); |