GitHub pull request #3000 of commit 1034a4521a123551fbfd2cc265dbd1f70da7d58a, no merge conflicts.sha1origin/pr/3000/mergeghprbActualCommit1034a4521a123551fbfd2cc265dbd1f70da7d58aghprbActualCommitAuthorghprbActualCommitAuthorEmailghprbAuthorRepoGitUrlhttps://github.com/michalgr/bcc.gitghprbTriggerAuthorghprbTriggerAuthorEmailghprbTriggerAuthorLoginyonghong-songghprbTriggerAuthorLoginMention@yonghong-songghprbPullId3000ghprbTargetBranchmasterghprbSourceBranchfix_symfsGIT_BRANCHfix_symfsghprbPullAuthorEmailghprbPullAuthorLoginmichalgrghprbPullAuthorLoginMention@michalgrghprbPullDescriptionGitHub pull request #3000 of commit 1034a4521a123551fbfd2cc265dbd1f70da7d58a, no merge conflicts.ghprbPullTitleFix symbol resolution via symfsghprbPullLinkhttps://github.com/iovisor/bcc/pull/3000ghprbPullLongDescriptionPaths that are passed to find_debug_via_symfs often start with /proc/PID/root/\r\nprefix which is followed by actual path. This breaks symfs symbol resoultion.\r\nSymfs directory usually does not contain proc subdirectory and subdirectories\r\nfor each pid.\r\n\r\nHere are examples of stack traces I got when tracing dlopen on Android before:\r\n```\r\n7acc558ef8 dlopen+0 (/system/lib64/libdl.so)\r\n7a2222f988 EglThreadState::GetProcAddress(char const*)+64 (/vendor/lib64/egl/libGLESv2_adreno.so)\r\n7ac8e3ecbc eglGetProcAddress+540 (/system/lib64/libEGL.so)\r\n7acb824a58 GrGLMakeAssembledGLESInterface(void*, void (* ()(void, char const*))())+8136 (/system/lib64/libhwui.so)\r\n7acb83a9b0 GrGLCreateNativeInterface()+48 (/system/lib64/libhwui.so)\r\n7acb63443c 0x7acb63443c ([unknown])\r\n7acb9cd33c 0x7acb9cd33c ([unknown])\r\n7acb9cdd70 0x7acb9cdd70 ([unknown])\r\n7acb9c7f20 0x7acb9c7f20 ([unknown])\r\n7acb9cbcc8 0x7acb9cbcc8 ([unknown])\r\n7acb98348c 0x7acb98348c ([unknown])\r\n7acb65da30 0x7acb65da30 ([unknown])\r\n7aca096b84 android::Thread::_threadLoop(void*)+284 (/system/lib64/libutils.so)\r\n7acc2c6288 __pthread_start(void*)+40 (/system/lib64/libc.so)\r\n7acc266500 __start_thread+72 (/system/lib64/libc.so)\r\n```\r\n\r\nand after:\r\n```\r\n7acc558ef8 dlopen+0 (/system/lib64/libdl.so)\r\n7a23a2d988 EglThreadState::GetProcAddress(char const*)+64 (/vendor/lib64/egl/libGLESv2_adreno.so)\r\n7ac8e3ecbc eglGetProcAddress+540 (/system/lib64/libEGL.so)\r\n7acb824a58 0x7acb824a58 ([unknown])\r\n7acb83a9b0 GrGLCreateNativeInterface()+48 (/system/lib64/libhwui.so)\r\n7acb63443c android::uirenderer::debug::GlesDriver::getSkiaInterface()+20 (/system/lib64/libhwui.so)\r\n7acb9cd33c android::uirenderer::renderthread::EglManager::initialize()+700 (/system/lib64/libhwui.so)\r\n7acb9cdd70 android::uirenderer::renderthread::EglManager::createSurface(ANativeWindow*, bool)+48 (/system/lib64/libhwui.so)\r\n7acb9c7f20 android::uirenderer::skiapipeline::SkiaOpenGLPipeline::setSurface(android::Surface*, android::uirenderer::renderthread::SwapBehavior, android::uirenderer::renderthread::ColorMode)+88 (/system/lib64/libhwui.so)\r\n7acb9cbcc8 android::uirenderer::renderthread::CanvasContext::setSurface(android::sp<android::Surface>&&)+88 (/system/lib64/libhwui.so)\r\n7acb98348c android::uirenderer::WorkQueue::process()+172 (/system/lib64/libhwui.so)\r\n7acb65da30 0x7acb65da30 ([unknown])\r\n7aca096b84 android::Thread::_threadLoop(void*)+284 (/system/lib64/libutils.so)\r\n7acc2c6288 __pthread_start(void*)+40 (/system/lib64/libc.so)\r\n7acc266500 __start_thread+72 (/system/lib64/libc.so)\r\n```ghprbCommentBody[buildbot, test this please]ghprbGhRepositoryiovisor/bccghprbCredentialsId6d3daf13-69b8-48b1-9c8f-ec5353264113false<a title="Fix symbol resolution via symfs" href="https://github.com/iovisor/bcc/pull/3000">PR #3000</a>: Fix symbol resolution via s...#58411851707460664bcc-pr #584584false5844680SUCCESS1593879415704https://buildbot.iovisor.org/jenkins/view/all/job/bcc-pr/584/git584https://buildbot.iovisor.org/jenkins/view/all/job/bcc-pr/label=fc25/584/584https://buildbot.iovisor.org/jenkins/view/all/job/bcc-pr/label=fc26/584/584https://buildbot.iovisor.org/jenkins/view/all/job/bcc-pr/label=fc27/584/584https://buildbot.iovisor.org/jenkins/view/all/job/bcc-pr/label=fc28/584/584https://buildbot.iovisor.org/jenkins/view/all/job/bcc-pr/label=ubuntu1604/584/584https://buildbot.iovisor.org/jenkins/view/all/job/bcc-pr/label=ubuntu1710/584/584https://buildbot.iovisor.org/jenkins/view/all/job/bcc-pr/label=ubuntu1804/584/