From nobody Sun Oct 25 22:00:23 2026 X-Original-To: dev-commits-src-branches@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4jCW0835pZz6xCKG for ; Sun, 25 Oct 2026 22:00:24 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 4jCW07740xz4Xm9 for ; Sun, 25 Oct 2026 22:00:23 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1792965624; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=l7CYOD9/ohqbv+4sP8e61AxW/7Q5I3RbzKr/6AHNUW8=; b=S1lgCkvMT07tRyVhr6Ce3lfB8NhJbvdCAVpkUAx9cfvnY43i0tW6Jj9oKohreyqN3+VMg9 SbIny4+YoPy1T6j4jmYiZvW2NB2GAZlylanaCpM3RjMd3tW3fzU4zbnT+GvLa96cLS9/oV Gts2lfNBB65kYJk0r4NETTSLT541DGSnWJpaVcRigkUft+7KnstFRgYO82T2IyDAoYsQ6z ezMJg0HK72lSlWPsAAiBO9E92PcalJub2JMV8ZEGjGaVQi/TSJVcXg7US6mz9KEjm6Moo2 Ec2Q08Yqe9jWniYOiu7tC1KI2zsCQUR+LJDs/mbOsNf2Q+oglz662vsHA4s37A== ARC-Seal: i=1; a=rsa-sha256; d=freebsd.org; s=dkim; cv=none; t=1792965624; b=yD9k5VBIrtBvYGKgHddhF+FQpQNFBjFM2QpSU+FWtei26bVambvndJt7r9SWCosU44H24p ES5EW8y+dcP4xcVP1wMEa88PiCXT3u1JwQZwzzAOVlaFajoB+Grg8rHs1NYyu20yEzH2m8 Q/QB7f/9rBk0vgPsbl1+CahGSpOccuv8CRfp1AqB3nq76EYUsxvmA9BAWUQpIrKF3GbJ7e MrwjUgOIEYjnzEIlnVseToIug4w4XHQcVzU1ivH3xqFTy2FGsN+aItUPOM5GA3dlJdVc5+ jmVez0FwU8VjJQY37OvimuyY3ICLaMwVya02kMIvUtPxI99TqDkYp9m5egPNRw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1792965624; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=l7CYOD9/ohqbv+4sP8e61AxW/7Q5I3RbzKr/6AHNUW8=; b=K/sEr9wJFXLOKH2rdR3PF2kb5ODiRQQrjUqR0DW9j8uIB3AHU37l5midsGRC2jWoxw3Hwe 1mjDZd3CpwEltXi0oMiW5GyHu5yFBL5dB7vQ/YVYiBshLTpHngENG+Z86aOh2V58ywpZug LH+jX4F0KZ4uOXVlv8bh4va0Qvlm8wQEKvc0T7i1c4Q1cHoUrs7m3ZhJBWyuLka2CQiwaT EGgcmbRde8nYAv26P8IrdrKgzmaJkuhPfSC746tljPzk6ZcJP1WauX60RXdGR3Q+AKbQVp 3d7wNchfwZneYB4KZbUgmSO2n+q0SKJb4LSvcqWj5gLTk9f/zbUA0M+akJMe8g== ARC-Authentication-Results: i=1; mx1.freebsd.org; none Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4jCW076WFCz14hk for ; Sun, 25 Oct 2026 22:00:23 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 43947 by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Sun, 25 Oct 2026 22:00:23 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Cc: Ricardo Branco From: Pouria Mousavizadeh Tehrani Subject: git: 8328ca324c36 - stable/15 - linux: Implement PTRACE_GETREGSET NT_PRFPREG and NT_X86_XSTATE List-Archive: https://lists.freebsd.org/archives/dev-commits-src-branches X-BeenThere: dev-commits-src-branches@freebsd.org Sender: owner-dev-commits-src-branches@FreeBSD.org List-Id: Commits to the stable branches of the FreeBSD src repository List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: pouria X-Git-Repository: src X-Git-Refname: refs/heads/stable/15 X-Git-Reftype: branch X-Git-Commit: 8328ca324c3623b038230f99b40411892a99c669 Auto-Submitted: auto-generated Date: Sun, 25 Oct 2026 22:00:23 +0000 Message-Id: <6ade7bf7.43947.62a3c4b8@gitrepo.freebsd.org> The branch stable/15 has been updated by pouria: URL: https://cgit.FreeBSD.org/src/commit/?id=8328ca324c3623b038230f99b40411892a99c669 commit 8328ca324c3623b038230f99b40411892a99c669 Author: Ricardo Branco AuthorDate: 2026-04-26 14:45:35 +0000 Commit: Pouria Mousavizadeh Tehrani CommitDate: 2026-10-25 21:53:16 +0000 linux: Implement PTRACE_GETREGSET NT_PRFPREG and NT_X86_XSTATE Implement NT_PRFPREG and NT_X86_XSTATE for PTRACE_GETREGSET on amd64. Chrome's crashpad handler uses these to collect floating-point and extended CPU register state for crash dumps. Other architectures retain the previous EINVAL stub behavior. Signed-off-by: Ricardo Branco PR: 289285 Reviewed by: kib Pull-Request: https://github.com/freebsd/freebsd-src/pull/2165 (cherry picked from commit c515e6040614434a9262ee8b5ac54b81476ec7ff) --- sys/compat/linux/linux_ptrace.c | 91 ++++++++++++++++++++++++++++++++++++++--- 1 file changed, 85 insertions(+), 6 deletions(-) diff --git a/sys/compat/linux/linux_ptrace.c b/sys/compat/linux/linux_ptrace.c index 0dbfd2177122..28a4c42190af 100644 --- a/sys/compat/linux/linux_ptrace.c +++ b/sys/compat/linux/linux_ptrace.c @@ -335,6 +335,87 @@ linux_ptrace_getregset_prstatus(struct thread *td, pid_t pid, l_ulong data) return (error); } +#ifdef __amd64__ +static int +linux_ptrace_getregset_prfpreg(struct thread *td, pid_t pid, l_ulong data) +{ + struct fpreg b_fpreg; + struct linux_pt_fpregset l_fpregset; + struct iovec iov; + size_t len; + int error; + + error = copyin((const void *)data, &iov, sizeof(iov)); + if (error != 0) { + linux_msg(td, "copyin error %d", error); + return (error); + } + + error = kern_ptrace(td, PT_GETFPREGS, pid, &b_fpreg, 0); + if (error != 0) + return (error); + + bsd_to_linux_fpregset(&b_fpreg, &l_fpregset); + + len = MIN(iov.iov_len, sizeof(l_fpregset)); + error = copyout(&l_fpregset, iov.iov_base, len); + if (error != 0) { + linux_msg(td, "copyout error %d", error); + return (error); + } + + iov.iov_len = len; + error = copyout(&iov, (void *)data, sizeof(iov)); + if (error != 0) + linux_msg(td, "iov copyout error %d", error); + + return (error); +} + +static int +linux_ptrace_getregset_xstate(struct thread *td, pid_t pid, l_ulong data) +{ + struct ptrace_xstate_info info; + struct iovec iov; + void *xstate; + size_t len; + int error; + + error = copyin((const void *)data, &iov, sizeof(iov)); + if (error != 0) { + linux_msg(td, "copyin error %d", error); + return (error); + } + + error = kern_ptrace(td, PT_GETXSTATE_INFO, pid, &info, sizeof(info)); + if (error != 0) + return (error); + + xstate = malloc(info.xsave_len, M_LINUX, M_WAITOK | M_ZERO); + + error = kern_ptrace(td, PT_GETXSTATE, pid, xstate, info.xsave_len); + if (error != 0) { + free(xstate, M_LINUX); + return (error); + } + + len = MIN(iov.iov_len, info.xsave_len); + error = copyout(xstate, iov.iov_base, len); + free(xstate, M_LINUX); + if (error != 0) { + linux_msg(td, "copyout error %d", error); + return (error); + } + + iov.iov_len = len; + error = copyout(&iov, (void *)data, sizeof(iov)); + if (error != 0) + linux_msg(td, "iov copyout error %d", error); + + return (error); +} +#endif /* __amd64__ */ + static int linux_ptrace_getregset(struct thread *td, pid_t pid, l_ulong addr, l_ulong data) { @@ -342,14 +423,12 @@ linux_ptrace_getregset(struct thread *td, pid_t pid, l_ulong addr, l_ulong data) switch (addr) { case LINUX_NT_PRSTATUS: return (linux_ptrace_getregset_prstatus(td, pid, data)); +#ifdef __amd64__ case LINUX_NT_PRFPREG: - linux_msg(td, "PTRAGE_GETREGSET NT_PRFPREG not implemented; " - "returning EINVAL"); - return (EINVAL); + return (linux_ptrace_getregset_prfpreg(td, pid, data)); case LINUX_NT_X86_XSTATE: - linux_msg(td, "PTRAGE_GETREGSET NT_X86_XSTATE not implemented; " - "returning EINVAL"); - return (EINVAL); + return (linux_ptrace_getregset_xstate(td, pid, data)); +#endif default: linux_msg(td, "PTRACE_GETREGSET request %#lx not implemented; " "returning EINVAL", addr);