Date: Thu, 25 May 2017 16:41:07 +0000 (UTC) From: Ed Maste <emaste@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r318884 - head/contrib/llvm/tools/lldb/source/Plugins/Process/FreeBSD Message-ID: <201705251641.v4PGf7bI007518@repo.freebsd.org>
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Author: emaste Date: Thu May 25 16:41:07 2017 New Revision: 318884 URL: https://svnweb.freebsd.org/changeset/base/318884 Log: lldb: map TRAP_CAP to a trace trap In the absense of a more specific handler for TRAP_CAP (generated by ENOTCAPABLE or ECAPMODE while in capability mode) treat it as a trace trap. Example usage (testing the bug in PR219173): % proccontrol -m trapcap lldb usr.bin/hexdump/obj/hexdump -- -Cv -s 1 /bin/ls ... (lldb) run Process 12980 launching Process 12980 launched: '.../usr.bin/hexdump/obj/hexdump' (x86_64) Process 12980 stopped * thread #1, stop reason = trace frame #0: 0x0000004b80c65f1a libc.so.7`__sys_lseek + 10 ... In the future we should have LLDB control the trapcap procctl itself (as it does with ASLR), as well as report a specific stop reason. This change eliminates an assertion failure from LLDB for now. Modified: head/contrib/llvm/tools/lldb/source/Plugins/Process/FreeBSD/ProcessMonitor.cpp Modified: head/contrib/llvm/tools/lldb/source/Plugins/Process/FreeBSD/ProcessMonitor.cpp ============================================================================== --- head/contrib/llvm/tools/lldb/source/Plugins/Process/FreeBSD/ProcessMonitor.cpp Thu May 25 16:31:53 2017 (r318883) +++ head/contrib/llvm/tools/lldb/source/Plugins/Process/FreeBSD/ProcessMonitor.cpp Thu May 25 16:41:07 2017 (r318884) @@ -1132,6 +1132,8 @@ ProcessMessage ProcessMonitor::MonitorSI case 0: case TRAP_TRACE: + // Map TRAP_CAP to a trace trap in the absense of a more specific handler. + case TRAP_CAP: if (log) log->Printf("ProcessMonitor::%s() received trace event, tid = %" PRIu64 " : si_code = %d",
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