GitHub pull request #3153 of commit aa00928f957a6dbbfe77262a85c029bd12d86601, no merge conflicts.sha1origin/pr/3153/mergeghprbActualCommitaa00928f957a6dbbfe77262a85c029bd12d86601ghprbActualCommitAuthorYonghong SongghprbActualCommitAuthorEmailyhs@fb.comghprbAuthorRepoGitUrlhttps://github.com/iovisor/bcc.gitghprbTriggerAuthorghprbTriggerAuthorEmailghprbTriggerAuthorLoginghprbTriggerAuthorLoginMentionghprbPullId3153ghprbTargetBranchmasterghprbSourceBranchyhs_devGIT_BRANCHyhs_devghprbPullAuthorEmailghprbPullAuthorLoginyonghong-songghprbPullAuthorLoginMention@yonghong-songghprbPullDescriptionGitHub pull request #3153 of commit aa00928f957a6dbbfe77262a85c029bd12d86601, no merge conflicts.ghprbPullTitleuse correct arch register for the 4th param of x86_64 syscallsghprbPullLinkhttps://github.com/iovisor/bcc/pull/3153ghprbPullLongDescriptionFix #3150\r\n\r\nOn x86_64, for syscalls, the calling convension is to use\r\nr10 instead of rcx for the 4th parameter. I have verified this\r\nwith disassembling vmlinux codes.\r\n https://www.systutorials.com/x86-64-calling-convention-by-gcc/\r\n\r\nbcc previously used rcx for the 4th parameter for all cases.\r\nThis patch fixed the issue by using r10 for syscalls.\r\nA macro PT_REGS_PARM4_SYSCALL() is also introduced in helpers.h\r\nto access the 4th parameter for r10.\r\n\r\nSigned-off-by: Yonghong Song <yhs@fb.com>ghprbCommentBodynullghprbGhRepositoryiovisor/bccghprbCredentialsId6d3daf13-69b8-48b1-9c8f-ec5353264113false<a title="use correct arch register for the 4th param of x86_64 syscalls" href="https://github.com/iovisor/bcc/pull/3153">PR #3153</a>: use correct arch register f...#73711259117460664bcc-pr #737737false7375905SUCCESS1604448644455https://buildbot.iovisor.org/jenkins/user/danobi/my-views/view/all/job/bcc-pr/737/git737https://buildbot.iovisor.org/jenkins/user/danobi/my-views/view/all/job/bcc-pr/label=fc25/737/737https://buildbot.iovisor.org/jenkins/user/danobi/my-views/view/all/job/bcc-pr/label=fc26/737/737https://buildbot.iovisor.org/jenkins/user/danobi/my-views/view/all/job/bcc-pr/label=fc27/737/737https://buildbot.iovisor.org/jenkins/user/danobi/my-views/view/all/job/bcc-pr/label=fc28/737/737https://buildbot.iovisor.org/jenkins/user/danobi/my-views/view/all/job/bcc-pr/label=ubuntu1604/737/737https://buildbot.iovisor.org/jenkins/user/danobi/my-views/view/all/job/bcc-pr/label=ubuntu1710/737/737https://buildbot.iovisor.org/jenkins/user/danobi/my-views/view/all/job/bcc-pr/label=ubuntu1804/737/