From nobody Thu Mar 5 14:44:11 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 4fRXNq417Zz6T7rp for ; Thu, 05 Mar 2026 14:44:11 +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 "R12" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4fRXNq2H03z3S4g for ; Thu, 05 Mar 2026 14:44:11 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1772721851; 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=cm2sJW5bPtluG0v1TeUS8ChtWQ34hyqwFcg0sPRzgaA=; b=RdhgGSb5HysI7qqSq+AYUwwRl1IXwePOcBaT9za8SroZTz1dwQRAOUPzharhBMHQHBWVpe EfL2QipCVq+5/HBG+QGFGzQ5VdAzSULg7iYE9LtHlfe95uujhjca/uAYbKGNtifR9tMFGd 1VuXQ9ApbvhUduOJIkC3kTyoUgVmQ1cL5P73snZM1ci1en8AsDfefgyUzzblhlEoiFuYJZ gHItVJ8yzkNPKqlsEv7Z+nwgLS3vf0WKV/E7MLFZnDlkig8YV1JtKPbIDFYoALFTEI9qiK zbwVGw1gMF5qS5ZaBLSTJbNwuYiviSQJxH8BuThXyCVxmIohzs8Ys+t/nI3AVw== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1772721851; a=rsa-sha256; cv=none; b=xeAgXn55/6WEykQ4DhDwGuiyGeCTj9mQLz2w9tpZ/fe9cEXHmu7HSBF1ACcSWRdTB7hPPD dzMnMO4Z8mStfNrVVd6utaC+n0icliZrjDapn1jejBODlt/lLO6My7ZucDQnsknpLHk4uJ jzjGtNhONgYy7txFYzW0Sf4sXIUJ+pJ+lDIKRwSF//txenMAVXmipL4MU9BPgmaOVo9ewL D0MelnLIDE/C01d0YJjhpWvrm3NJzQbMX4vHGOyFVY9KhBsvHz9z7YdvT57bhUgjzpkbQY GiuWGxsM9P7/a4xaw+vbR7ME6OSSGqC6uiUMXr1RBrq74KYVX1nY78+Mt7Zu9g== 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=1772721851; 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=cm2sJW5bPtluG0v1TeUS8ChtWQ34hyqwFcg0sPRzgaA=; b=LmX06RLMkcNC0vQboPtxbrdOWRdywrQE/FkojoP6/LLXkucFU4F+fkN8NmhezQg9rkjyQ9 gHzgDmMCMpIR3sAoRlmRGCWgSYX7bnO8wSRPu1NpThZ6BYcavJ0CryUK4wRQGwPoMgUynH lyrm6yhPopkleoTBxr1l/H/onYyBxbXy2T1bhp6/UynTrOghkbrHfN0RXwzwg8qZiNBxq4 q8Mh6L+23kSXK63dZBoGjRAs9JD8fgAoYCPyGrnpU5UkDCzyA/fK6aHQySUN3vZXWmsZTW FjKYi4hg0ZepzxEoGO+HtDYeryL4kXVb/Yq1LeI7bz/UO5nZzAC4bLIhzi0stQ== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4fRXNq1cwHzhP4 for ; Thu, 05 Mar 2026 14:44:11 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 25c68 by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Thu, 05 Mar 2026 14:44:11 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Olivier Certner Subject: git: 16de2cf81f75 - stable/15 - kernel dump: dumpsys_gen_pa_next(): Fix "no more chunks" condition detection 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: olce X-Git-Repository: src X-Git-Refname: refs/heads/stable/15 X-Git-Reftype: branch X-Git-Commit: 16de2cf81f75a7e7752a738e83a42b63d53b75c3 Auto-Submitted: auto-generated Date: Thu, 05 Mar 2026 14:44:11 +0000 Message-Id: <69a996bb.25c68.29b21786@gitrepo.freebsd.org> The branch stable/15 has been updated by olce: URL: https://cgit.FreeBSD.org/src/commit/?id=16de2cf81f75a7e7752a738e83a42b63d53b75c3 commit 16de2cf81f75a7e7752a738e83a42b63d53b75c3 Author: Olivier Certner AuthorDate: 2026-02-04 13:04:20 +0000 Commit: Olivier Certner CommitDate: 2026-03-05 14:43:24 +0000 kernel dump: dumpsys_gen_pa_next(): Fix "no more chunks" condition detection In the (improbable) cases where either: - All entries in dump_map[] are used, so there is no guard entry filled with zeros. - Some dump region has size 0. We would respectively access dump_map[] out-of-bounds or omit further dump regions when iterating. MFC after: 2 weeks Sponsored by: The FreeBSD Foundation (cherry picked from commit 7e5f4bb3a1c999d1893528faa75559f37365de47) --- sys/kern/kern_dump.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sys/kern/kern_dump.c b/sys/kern/kern_dump.c index 67c5844013be..f1354157abf1 100644 --- a/sys/kern/kern_dump.c +++ b/sys/kern/kern_dump.c @@ -82,7 +82,8 @@ dumpsys_gen_pa_next(struct dump_pa *mdp) return (&dump_map[0]); mdp++; - if (mdp->pa_size == 0) + if (mdp - dump_map >= nitems(dump_map) || + (mdp->pa_start == 0 && mdp->pa_size == 0)) mdp = NULL; return (mdp); }