Date: Thu, 16 Mar 2023 19:35:41 GMT From: Lorenzo Salvadore <salvadore@FreeBSD.org> To: doc-committers@FreeBSD.org, dev-commits-doc-all@FreeBSD.org Subject: git: dff50bc55d - main - Status/2023Q1: Add Valgrind report Message-ID: <202303161935.32GJZfsS002570@gitrepo.freebsd.org>
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The branch main has been updated by salvadore: URL: https://cgit.FreeBSD.org/doc/commit/?id=dff50bc55d981f683eecd5b060611f2b66bc06f6 commit dff50bc55d981f683eecd5b060611f2b66bc06f6 Author: Paul Floyd <pjfloyd@wanadoo.fr> AuthorDate: 2023-03-16 18:24:27 +0000 Commit: Lorenzo Salvadore <salvadore@FreeBSD.org> CommitDate: 2023-03-16 18:31:50 +0000 Status/2023Q1: Add Valgrind report Reviewed by: Pau Amma <pauamma@gundo.com> Pull Request: https://github.com/freebsd/freebsd-doc/pull/120/files Differential Revision: https://reviews.freebsd.org/D39022 --- .../en/status/report-2023-01-2023-03/valgrind.adoc | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/website/content/en/status/report-2023-01-2023-03/valgrind.adoc b/website/content/en/status/report-2023-01-2023-03/valgrind.adoc new file mode 100644 index 0000000000..989b880182 --- /dev/null +++ b/website/content/en/status/report-2023-01-2023-03/valgrind.adoc @@ -0,0 +1,29 @@ +=== Valgrind - Preparing for Valgrind 3.21 + +Links: + +link:https://www.valgrind.org/[Valgrind Home Page] URL: link:https://www.valgrind.org/[https://www.valgrind.org/] + +link:https://www.valgrind.org/docs/manual/dist.news.html[Valgrind News] URL: link:https://www.valgrind.org/docs/manual/dist.news.html[https://www.valgrind.org/docs/manual/dist.news.html] + +Contact: Paul Floyd <pjfloyd@wanadoo.fr> + +The package:devel/valgrind-devel[] port had an intermediate update which was submitted on 2023-02-20. +This contains most of what will be in the official release of Valgrind 3.21 which is due out shortly after this status report. + +There is a nice improvement to the vgdb interface. +It's now much easier to see which bits of memory are initialized or not. +There are a couple of fixes to the thread checks done by Helgrind. + +For FreeBSD specifically, the address space limit has been raised to be the same as Linux and Solaris on amd64. +It was 32Gbytes and now it is 128Gbytes. +The `kern.proc.pathname.PID` man:sysctl[3] has been fixed so that it returns the path of the guest exe and not that of the Valgrind host. +At the same time I fixed some `_umtx_op` false positives and corrected auxv `AT_EXECPATH` in a way similar to `kern.proc.pathname.PID`. +Syscall wrappers have been added for man:sctp_generic_sendmsg[2] and man:sctp_generic_recvmsg[2]. + +Not yet available in the ports versions of Valgrind, there is a workaround for the use of man:rfork[2]. +Previously, since it is not supported, it would cause Valgrind to abort. +Now it fails gracefully setting either EINVAL or ENOSYS. +The main use of this system call is in man:posix_spawn[3], which will fall back to using man:vfork[2]. + +The man:mknodat[2] syscall wrapper was incorrectly implemented on i386 and has now been fixed. + +There is a reworking of all of the aligned allocation functions so that they behave less like Linux glibc and more like the Valgrind build platform.
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