From nobody Tue Jan 27 19:16:11 2026 X-Original-To: dev-commits-src-all@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 4f0w9m5GD6z6QJFb for ; Tue, 27 Jan 2026 19:16:12 +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 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R13" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4f0w9l44glz3Ddf for ; Tue, 27 Jan 2026 19:16:11 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1769541371; 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=12Df9holnyd2t0HnzgNKQf7P61UYTo7udPGFbwJdCPU=; b=a1JhD/1qC5GUmehKD/AkGAPoF3QANy/yvFM5X8LMZmf/UCxYRaPG1bUgO6cGWcTYj7ywjT ua8y2GePUY4Zg1yf/xSa05pReCovL2rWf1/Hoi87uVkpORG3TnxypjBzbBX2Sg4xaz8AVn oQNX9gZsc6LSP2+IJx5xQIEdYFEe9ryEBh4Ju6159e9fv1BFS784uhiqQMCW9rw67GXups RMSsQYkHxzGIhno26T6M/g3SJ7SdW1vggodKMBLRlZkJp0y526YVxPMqnaEqKhIhG1ypyo jblW1PfyZY1DtDb513PbJsHB4Gge2Ng1OsA6O1CsBg9Vy7rurS7xPCVdjE/BOg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1769541371; 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=12Df9holnyd2t0HnzgNKQf7P61UYTo7udPGFbwJdCPU=; b=e+Wzm8jW41uzzS7gTCBOrXAAdsx0VxkxaeDA523wsWJH4j5yf3QrB8VAgdgbp2pB1/SkiB FkrNL/pWfbQtAe+HLyNV2IMxECGsytWS2UoJ62iDmGq/M2c8C+8J2hGcynR007C/Zbu4r4 O6hzbd4v4GGsJ9ml2r+S61CEE1XlLJ/rPfJRloxkyrGpN0yoEVveFMAFePyVD7QJ989/FX jgC+nLCsZ6lmE2AGI5s4sdVWAhxAU1kWrcMEWEaTjh0SbR39Lm+SU0ORpFrZJUR5I+WgKW DFu8CQMhWuhnQuvnYSCpOOESAdprNqCEWzVSMWQdaYllTYLLDm3LwBLjsBLeRw== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1769541371; a=rsa-sha256; cv=none; b=Xd9m3T1qQ+W0u6oZdUEeTzq+E58f5yUUJLUW5Vn+yEmgvUXq+BRUuhB3dGN1Ue+e+AgN6M QBG+ZROS9GxfSQvkZGUZL+FhHxcJsEfhd42ZxL0URtlJex3dfRvk9wTVO6vHuYlxLXKyVx pdLehSfFqv7EZHupZExiTem/dadTsSG1bg+/nFIPpdY44i+D3UhIACSWyVI/6zztOw4ufy C1elTN8sAwonrwOgJPk74V7frCFXJBSGX2o+T+UhBwTBMMairqbEsgOBUNXrwF0u9pHckx iaxqStU3PkDSKsPARPpRHG4blU4YGg/EwwOFxJ4lNDCAsEtGTrQU0xhnU0YgwA== 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 4f0w9l3cmQz4jr for ; Tue, 27 Jan 2026 19:16:11 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 235e3 by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Tue, 27 Jan 2026 19:16:11 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Cc: Andrew Turner From: Mark Johnston Subject: git: 3ba856f715ca - releng/14.3 - arm64: Correctly align the SVE signal context List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-all@freebsd.org Sender: owner-dev-commits-src-all@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: markj X-Git-Repository: src X-Git-Refname: refs/heads/releng/14.3 X-Git-Reftype: branch X-Git-Commit: 3ba856f715cac056b451faadd7633f17f64ebfd5 Auto-Submitted: auto-generated Date: Tue, 27 Jan 2026 19:16:11 +0000 Message-Id: <69790efb.235e3.72ff53e8@gitrepo.freebsd.org> The branch releng/14.3 has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=3ba856f715cac056b451faadd7633f17f64ebfd5 commit 3ba856f715cac056b451faadd7633f17f64ebfd5 Author: Andrew Turner AuthorDate: 2026-01-06 10:35:55 +0000 Commit: Mark Johnston CommitDate: 2026-01-26 16:47:27 +0000 arm64: Correctly align the SVE signal context The SVE signal context needs to be correctly aligned. Fix this by creating a new macro to calculate the needed size to provide this alignment, and use it when setting and checking the saved SVE signal context. Approved by: so Security: FreeBSD-EN-26:02.arm64 Reported by: cperciva Reviewed by: cperciva, markj Sponsored by: Arm Ltd Differential Revision: https://reviews.freebsd.org/D54396 (cherry picked from commit a9e77eb7016df70723c208fc09fbd01ec23a732d) (cherry picked from commit bcd6bb8067d13d28d13a309e32818cda9e0d29ff) --- sys/arm64/arm64/exec_machdep.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/sys/arm64/arm64/exec_machdep.c b/sys/arm64/arm64/exec_machdep.c index 67760850c56a..aba338762139 100644 --- a/sys/arm64/arm64/exec_machdep.c +++ b/sys/arm64/arm64/exec_machdep.c @@ -60,6 +60,10 @@ #include #endif +#define CTX_SIZE_SVE(buf_size) \ + roundup2(sizeof(struct sve_context) + (buf_size), \ + _Alignof(struct sve_context)) + _Static_assert(sizeof(mcontext_t) == 880, "mcontext_t size incorrect"); _Static_assert(sizeof(ucontext_t) == 960, "ucontext_t size incorrect"); _Static_assert(sizeof(siginfo_t) == 80, "siginfo_t size incorrect"); @@ -545,8 +549,7 @@ set_mcontext(struct thread *td, mcontext_t *mcp) buf_size = sve_buf_size(td); /* Check the size is valid */ - if (ctx.ctx_size != - (sizeof(sve_ctx) + buf_size)) + if (ctx.ctx_size != CTX_SIZE_SVE(buf_size)) return (EINVAL); memset(pcb->pcb_svesaved, 0, @@ -689,7 +692,7 @@ sendsig_ctx_sve(struct thread *td, vm_offset_t *addrp) { struct sve_context ctx; struct pcb *pcb; - size_t buf_size; + size_t buf_size, ctx_size; vm_offset_t ctx_addr; pcb = td->td_pcb; @@ -700,14 +703,15 @@ sendsig_ctx_sve(struct thread *td, vm_offset_t *addrp) MPASS(pcb->pcb_svesaved != NULL); buf_size = sve_buf_size(td); + ctx_size = CTX_SIZE_SVE(buf_size); /* Address for the full context */ - *addrp -= sizeof(ctx) + buf_size; + *addrp -= ctx_size; ctx_addr = *addrp; memset(&ctx, 0, sizeof(ctx)); ctx.sve_ctx.ctx_id = ARM64_CTX_SVE; - ctx.sve_ctx.ctx_size = sizeof(ctx) + buf_size; + ctx.sve_ctx.ctx_size = ctx_size; ctx.sve_vector_len = pcb->pcb_sve_len; ctx.sve_flags = 0;