Author: Peter Collingbourne Date: 2020-12-29T14:36:50-08:00 New Revision: 7e5a187de31358741f9868cdee7b0c63c1343d8d
URL: https://github.com/llvm/llvm-project/commit/7e5a187de31358741f9868cdee7b0c63c1343d8d DIFF: https://github.com/llvm/llvm-project/commit/7e5a187de31358741f9868cdee7b0c63c1343d8d.diff LOG: CrashReason: Add MTE tag check faults to the list of crash reasons. As of Linux 5.10, the kernel may report either of the two following crash reasons: - SEGV_MTEAERR: async MTE tag check fault - SEGV_MTESERR: sync MTE tag check fault Teach LLDB about them. Differential Revision: https://reviews.llvm.org/D93495 Added: Modified: lldb/source/Plugins/Process/POSIX/CrashReason.cpp lldb/source/Plugins/Process/POSIX/CrashReason.h Removed: ################################################################################ diff --git a/lldb/source/Plugins/Process/POSIX/CrashReason.cpp b/lldb/source/Plugins/Process/POSIX/CrashReason.cpp index 579077b45bf9..c6ede61cfe1b 100644 --- a/lldb/source/Plugins/Process/POSIX/CrashReason.cpp +++ b/lldb/source/Plugins/Process/POSIX/CrashReason.cpp @@ -58,6 +58,18 @@ CrashReason GetCrashReasonForSIGSEGV(const siginfo_t &info) { #endif case SEGV_BNDERR: return CrashReason::eBoundViolation; +#ifdef __linux__ +#ifndef SEGV_MTEAERR +#define SEGV_MTEAERR 8 +#endif + case SEGV_MTEAERR: + return CrashReason::eAsyncTagCheckFault; +#ifndef SEGV_MTESERR +#define SEGV_MTESERR 9 +#endif + case SEGV_MTESERR: + return CrashReason::eSyncTagCheckFault; +#endif // __linux__ } return CrashReason::eInvalidCrashReason; @@ -166,6 +178,13 @@ std::string GetCrashReasonString(CrashReason reason, lldb::addr_t fault_addr) { case CrashReason::eBoundViolation: str = "signal SIGSEGV: bound violation"; break; + case CrashReason::eAsyncTagCheckFault: + str = "signal SIGSEGV: async tag check fault"; + break; + case CrashReason::eSyncTagCheckFault: + str = "signal SIGSEGV: sync tag check fault"; + AppendFaultAddr(str, fault_addr); + break; case CrashReason::eIllegalOpcode: str = "signal SIGILL: illegal instruction"; break; @@ -246,6 +265,12 @@ const char *CrashReasonAsString(CrashReason reason) { case CrashReason::eBoundViolation: str = "eBoundViolation"; break; + case CrashReason::eAsyncTagCheckFault: + str = "eAsyncTagCheckFault"; + break; + case CrashReason::eSyncTagCheckFault: + str = "eSyncTagCheckFault"; + break; // SIGILL crash reasons. case CrashReason::eIllegalOpcode: diff --git a/lldb/source/Plugins/Process/POSIX/CrashReason.h b/lldb/source/Plugins/Process/POSIX/CrashReason.h index 9b4784a1e68e..f5213891d976 100644 --- a/lldb/source/Plugins/Process/POSIX/CrashReason.h +++ b/lldb/source/Plugins/Process/POSIX/CrashReason.h @@ -22,6 +22,8 @@ enum class CrashReason { eInvalidAddress, ePrivilegedAddress, eBoundViolation, + eAsyncTagCheckFault, + eSyncTagCheckFault, // SIGILL crash reasons. eIllegalOpcode, _______________________________________________ lldb-commits mailing list lldb-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
