From nobody Fri Aug 14 14:36:02 2026 X-Original-To: dev-commits-src-main@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 4hM4Xg4yvPz6nwZK for ; Fri, 14 Aug 2026 14:36:03 +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 "YR1" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4hM4Xg0Yhyz3gtY for ; Fri, 14 Aug 2026 14:36:03 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1786718163; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=WmKwis7B/NwqbizIidO9VD+RF5OzSwnsls/L8iEeAdw=; b=kY/60yMLlf+/9BfAtf4p/UwOYAPmjs3VNRlfRBkng1ZYdEVg+Ts9ri3Dde2d2Uw1qzX+f9 AqKEiJh0sJyIAx+A8fciMGWwTKqNotd7bbwjE1gSWXqKIoIIPaAeUwgo5yupehQYmKJgTo LBhqW7gwwsmqkspuuJNrltYqv49czZmZ1FK7X4aqOpzH0VPNpXWiRzIxgpDu/zK9OA9kec +ujLlLzyj2sXyX486s2zFjBZ+5cvxEavIncRDbOoEFX2Y+c1ZTLSiRWXrlodDTpClMGDq0 ijEbDYiac+d0HAx1m3NZQJp4W4TJq4JB1/EE2WEXnwJFvZgCYy7ekVU/8RQrYA== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1786718163; a=rsa-sha256; cv=none; b=a3soqGLNFmsbjtLzUD7u+Abo+0nkUQ4aanidVgwhMdGWFEX3MAHHqAauDVn9S+WS8ic+5A r1s9fOHBeY8LgmAOZaRvtqT0VnMSIwbOCaBImDL1uoCzGuCK2CM2e0xqKywcSl4IhY8e4w cVvjekRG0/tpti72s/KmIXAsCBJd5tv7kPZmEjJEGwpBtfmA8SYaYI2+sYf+ZA2ahZIu6D 4xs0CaJ6MOUbm0fzkTkZcihfTzS50O7OILZY3yeLEvz1F/rs95HfItGfVZEp0vu77mEJnY lY1WVXyjfxVhJVptKcpZOIf+DXJIltWUkA19jA/z0u1Q9SmMcInXqcwmc2qwYA== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1786718163; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=WmKwis7B/NwqbizIidO9VD+RF5OzSwnsls/L8iEeAdw=; b=Nje/BtefCbJk7UDq4lxJvDPCdOzshl9hoKu7KGGWRdYtUJi19N+c2F040ELFC8mnx0mImZ VX5W2L7L+Ut1VFIdRJ3hDi9lPn7mFqRnNGpF5i5Xy3cDGcKe4S5cA/0UiW23nlv963AZ6C lZXuIn10va93GrSVd6k9xV35C4DIz84djxQbcbS7ZrOm8l6qwDvkyyoQZ2p5b2bZGI6DW+ EpbWMFNh2vPhI7o3xbXffGxcTtE74FZL5ajsmYGPRFy2u3Za+7UrDQijfWwJ4Qfa64LQYg agZEDoh2yHLpM92eDUlim+16vk/gpgO4GBnVeKDph55DVTBHvTNTjWeV1WWSSw== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4hM4Xf6jd3z11sG for ; Fri, 14 Aug 2026 14:36:02 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 3bc5d by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Fri, 14 Aug 2026 14:36:02 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Konstantin Belousov Subject: git: 1a71d24ecd0d - main - kern/sys_process.c: make vmspace_rwmem() similar to io functions List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-main@freebsd.org Sender: owner-dev-commits-src-main@FreeBSD.org List-Id: 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: kib X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 1a71d24ecd0dbaf61fd2a44166e9be07c328b198 Auto-Submitted: auto-generated Date: Fri, 14 Aug 2026 14:36:02 +0000 Message-Id: <6a7f27d2.3bc5d.13941f00@gitrepo.freebsd.org> The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=1a71d24ecd0dbaf61fd2a44166e9be07c328b198 commit 1a71d24ecd0dbaf61fd2a44166e9be07c328b198 Author: Konstantin Belousov AuthorDate: 2026-08-14 05:46:07 +0000 Commit: Konstantin Belousov CommitDate: 2026-08-14 14:35:38 +0000 kern/sys_process.c: make vmspace_rwmem() similar to io functions In particular, if there were any bytes moved, and then vm_fault() faulted, do not return an error, but report the short io instead. PR: 297512 Reviewed by: markj Tested by: Stéphane D'Alu Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D58838 --- sys/kern/sys_process.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/sys/kern/sys_process.c b/sys/kern/sys_process.c index 73e6b64e900b..46848ca150c0 100644 --- a/sys/kern/sys_process.c +++ b/sys/kern/sys_process.c @@ -451,6 +451,7 @@ vmspace_rwmem(struct vmspace *vm, struct uio *uio) vm_map_t map; vm_offset_t pageno; /* page number */ vm_prot_t reqprot; + ssize_t orig_resid; int error, fault_flags, page_offset, writing; map = &vm->vm_map; @@ -464,10 +465,12 @@ vmspace_rwmem(struct vmspace *vm, struct uio *uio) reqprot = writing ? VM_PROT_COPY | VM_PROT_READ : VM_PROT_READ; fault_flags = writing ? VM_FAULT_DIRTY : VM_FAULT_NORMAL; + orig_resid = uio->uio_resid; + if (writing) { error = priv_check(curthread, PRIV_PROC_MEM_WRITE); if (error != 0) - goto out; + return (error); } /* @@ -524,9 +527,7 @@ vmspace_rwmem(struct vmspace *vm, struct uio *uio) vm_page_unwire(m, PQ_ACTIVE); } while (error == 0 && uio->uio_resid > 0); - -out: - return (error); + return (uio->uio_resid == orig_resid ? error : 0); } int