Date: Sat, 30 May 2026 19:53:05 +0000 From: Pawel Biernacki <kaktus@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: a64148e21bb4 - main - linux: Add support for PR_SET_VMA to prctl(2) Message-ID: <6a1b4021.27e7b.46004f5e@gitrepo.freebsd.org>
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The branch main has been updated by kaktus: URL: https://cgit.FreeBSD.org/src/commit/?id=a64148e21bb4ac976345cbedbd32942f97f07cc1 commit a64148e21bb4ac976345cbedbd32942f97f07cc1 Author: Pawel Biernacki <kaktus@FreeBSD.org> AuthorDate: 2026-05-30 12:15:21 +0000 Commit: Pawel Biernacki <kaktus@FreeBSD.org> CommitDate: 2026-05-30 19:52:58 +0000 linux: Add support for PR_SET_VMA to prctl(2) Implement dummy support for PR_SET_VMA with PR_SET_VMA_ANON_NAME in prctl(2). This prevents applications from receiving EINVAL when attempting to name anonymous memory regions. --- sys/compat/linux/linux_misc.c | 7 +++++++ sys/compat/linux/linux_misc.h | 2 ++ 2 files changed, 9 insertions(+) diff --git a/sys/compat/linux/linux_misc.c b/sys/compat/linux/linux_misc.c index f89758f41ba0..eafba4f4bd19 100644 --- a/sys/compat/linux/linux_misc.c +++ b/sys/compat/linux/linux_misc.c @@ -1835,6 +1835,13 @@ linux_prctl(struct thread *td, struct linux_prctl_args *args) linux_msg(td, "unsupported prctl PR_SET_PTRACER"); error = EINVAL; break; + case LINUX_PR_SET_VMA: + if (args->arg2 != LINUX_PR_SET_VMA_ANON_NAME) { + linux_msg(td, "unsupported prctl PR_SET_VMA attr %ju", + (uintmax_t)args->arg2); + error = EINVAL; + } + break; default: linux_msg(td, "unsupported prctl option %d", args->option); error = EINVAL; diff --git a/sys/compat/linux/linux_misc.h b/sys/compat/linux/linux_misc.h index 2044f23f30ee..196f9372d4bf 100644 --- a/sys/compat/linux/linux_misc.h +++ b/sys/compat/linux/linux_misc.h @@ -62,6 +62,8 @@ #define LINUX_PR_SET_NO_NEW_PRIVS 38 /* Set no_new_privs attribute */ #define LINUX_PR_GET_NO_NEW_PRIVS 39 /* Get no_new_privs attribute */ #define LINUX_PR_SET_PTRACER 1499557217 +#define LINUX_PR_SET_VMA 1398164801 +#define LINUX_PR_SET_VMA_ANON_NAME 0 #define LINUX_MAX_COMM_LEN 16 /* Maximum length of the process name. */home | help
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