From 5d7417b40ed8717b3f307ed9e53c249a3a26cf1b Mon Sep 17 00:00:00 2001 From: Vadim ProductEngine Date: Tue, 2 Nov 2010 20:26:38 +0200 Subject: STORM-422 FIXED Added command line option "-disablecrashlogger" to disable crash logger. This is a patch originally written by Robin Cornelius. I made it work with Google Breakpad. --- indra/llcommon/llapp.cpp | 32 ++++++++++++++++++++++++++++++++ indra/llcommon/llapp.h | 6 ++++++ indra/newview/app_settings/cmd_line.xml | 8 ++++++++ indra/newview/llappviewer.cpp | 14 ++++++++++++++ 4 files changed, 60 insertions(+) (limited to 'indra') diff --git a/indra/llcommon/llapp.cpp b/indra/llcommon/llapp.cpp index eebd5ed0a6..39daefd1ad 100644 --- a/indra/llcommon/llapp.cpp +++ b/indra/llcommon/llapp.cpp @@ -90,6 +90,10 @@ S32 LL_HEARTBEAT_SIGNAL = (SIGRTMAX >= 0) ? (SIGRTMAX-0) : SIGUSR2; // the static application instance LLApp* LLApp::sApplication = NULL; +// Allows the generation of core files for post mortem under gdb +// and disables crashlogger +BOOL LLApp::sDisableCrashlogger = FALSE; + // Local flag for whether or not to do logging in signal handlers. //static BOOL LLApp::sLogInSignal = FALSE; @@ -461,11 +465,30 @@ bool LLApp::isQuitting() return (APP_STATUS_QUITTING == sStatus); } +// static bool LLApp::isExiting() { return isQuitting() || isError(); } +void LLApp::disableCrashlogger() +{ + // Disable Breakpad exception handler. + if (mExceptionHandler != 0) + { + delete mExceptionHandler; + mExceptionHandler = 0; + } + + sDisableCrashlogger = TRUE; +} + +// static +bool LLApp::isCrashloggerDisabled() +{ + return (sDisableCrashlogger == TRUE); +} + #if !LL_WINDOWS // static U32 LLApp::getSigChildCount() @@ -799,6 +822,15 @@ void default_unix_signal_handler(int signum, siginfo_t *info, void *) { llwarns << "Signal handler - Flagging error status and waiting for shutdown" << llendl; } + + if (LLApp::isCrashloggerDisabled()) // Don't gracefully handle any signal, crash and core for a gdb post mortem + { + clear_signals(); + llwarns << "Fatal signal received, not handling the crash here, passing back to operating system" << llendl; + raise(signum); + return; + } + // Flag status to ERROR, so thread_error does its work. LLApp::setError(); // Block in the signal handler until somebody says that we're done. diff --git a/indra/llcommon/llapp.h b/indra/llcommon/llapp.h index ee1d696829..a536a06ea5 100644 --- a/indra/llcommon/llapp.h +++ b/indra/llcommon/llapp.h @@ -189,6 +189,11 @@ public: // virtual bool mainLoop() = 0; // Override for the application main loop. Needs to at least gracefully notice the QUITTING state and exit. + // + // Crash logging + // + void disableCrashlogger(); // Let the OS handle the crashes + static bool isCrashloggerDisabled(); // Get the here above set value // // Application status @@ -280,6 +285,7 @@ protected: static void setStatus(EAppStatus status); // Use this to change the application status. static EAppStatus sStatus; // Reflects current application status static BOOL sErrorThreadRunning; // Set while the error thread is running + static BOOL sDisableCrashlogger; // Let the OS handle crashes for us. #if !LL_WINDOWS static LLAtomicU32* sSigChildCount; // Number of SIGCHLDs received. diff --git a/indra/newview/app_settings/cmd_line.xml b/indra/newview/app_settings/cmd_line.xml index 00d69f805e..ba3b6a42a4 100644 --- a/indra/newview/app_settings/cmd_line.xml +++ b/indra/newview/app_settings/cmd_line.xml @@ -391,5 +391,13 @@ CrashOnStartup + disablecrashlogger + + desc + Disables the crash logger and lets the OS handle crashes + map-to + DisableCrashLogger + + diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp index 931b9fd2f3..b17e4d77d5 100644 --- a/indra/newview/llappviewer.cpp +++ b/indra/newview/llappviewer.cpp @@ -2020,6 +2020,15 @@ bool LLAppViewer::initConfiguration() // - apply command line settings clp.notify(); + // Register the core crash option as soon as we can + // if we want gdb post-mortem on cores we need to be up and running + // ASAP or we might miss init issue etc. + if(clp.hasOption("disablecrashlogger")) + { + llwarns << "Crashes will be handled by system, stack trace logs and crash logger are both disabled" << llendl; + LLAppViewer::instance()->disableCrashlogger(); + } + // Handle initialization from settings. // Start up the debugging console before handling other options. if (gSavedSettings.getBOOL("ShowConsoleWindow")) @@ -2596,6 +2605,11 @@ void LLAppViewer::handleViewerCrash() abort(); } + if (LLApp::isCrashloggerDisabled()) + { + abort(); + } + // Returns whether a dialog was shown. // Only do the logic in here once if (pApp->mReportedCrash) -- cgit v1.2.3 From 9d97a16481528acbfa28f7681da68a6e485f9a22 Mon Sep 17 00:00:00 2001 From: Andrew Productengine Date: Wed, 3 Nov 2010 18:23:53 +0200 Subject: STORM-472 Fixed crash that happened while decoding jpg image. In case of files provided in ticket problem occured in libjpeg's jpeg_start_decompress(to be more specofic- inside it's _jinit_color_deconverter()) because if cinfo's out_color_space is RGB, then jpeg_color_space can't be JCS_YCCK (JCS_YCCK jpeg_color_space is possible for JCS_CMYK out_color_space). So when the combination of RGB and JCS_YCCK was encountered, jpeglib called ERREXIT() inside which exit() was called and viewer crashed. - Checking for this combination before calling jpeg_start_decompress() would solve this problem in this specific case, but there are a lot of possible error combinations which cause libjpeg to exit and thus crash viewer, so copypasting checks from it into viewer code would be cumbersome, uneffective and ugly. So another approach was used instead- by default libjpeg calls exit() after encountering an error, but user can provide his own error handling function instead. on_jpeg_error() function was added in fix for this. It sets true a boolean flag that is used to determine whether there were errors in getImageDimensionsJpeg(), and this function's return value depends on it. --- indra/llimage/llimagedimensionsinfo.cpp | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) (limited to 'indra') diff --git a/indra/llimage/llimagedimensionsinfo.cpp b/indra/llimage/llimagedimensionsinfo.cpp index 5ea4a236b5..835664c60f 100644 --- a/indra/llimage/llimagedimensionsinfo.cpp +++ b/indra/llimage/llimagedimensionsinfo.cpp @@ -30,6 +30,9 @@ #include "llimagedimensionsinfo.h" +// Value is true if one of Libjpeg's functions has encountered an error while working. +static bool sJpegErrorEncountered = false; + bool LLImageDimensionsInfo::load(const std::string& src_filename,U32 codec) { clean(); @@ -101,9 +104,17 @@ bool LLImageDimensionsInfo::getImageDimensionsPng() return true; } +// Called instead of exit() if Libjpeg encounters an error. +void on_jpeg_error(j_common_ptr cinfo) +{ + (void) cinfo; + sJpegErrorEncountered = true; + llwarns << "Libjpeg has encountered an error!" << llendl; +} bool LLImageDimensionsInfo::getImageDimensionsJpeg() { + sJpegErrorEncountered = false; clean(); FILE *fp = fopen (mSrcFilename.c_str(), "rb"); if (fp == NULL) @@ -115,6 +126,9 @@ bool LLImageDimensionsInfo::getImageDimensionsJpeg() jpeg_error_mgr jerr; jpeg_decompress_struct cinfo; cinfo.err = jpeg_std_error(&jerr); + // Call our function instead of exit() if Libjpeg encounters an error. + // This is done to avoid crash in this case (STORM-472). + cinfo.err->error_exit = on_jpeg_error; jpeg_create_decompress (&cinfo); jpeg_stdio_src (&cinfo, fp); @@ -128,6 +142,6 @@ bool LLImageDimensionsInfo::getImageDimensionsJpeg() jpeg_destroy_decompress(&cinfo); fclose(fp); - return true; + return !sJpegErrorEncountered; } -- cgit v1.2.3