Date: Sat, 03 Jan 2026 09:10:40 +0000 From: Dag-Erling=?utf-8?Q? Sm=C3=B8rg?=rav <des@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 27894e20f140 - main - libgeom: Fix segfault in 32-on-64 case Message-ID: <6958dd10.b4b9.2aebecda@gitrepo.freebsd.org>
index | next in thread | raw e-mail
The branch main has been updated by des: URL: https://cgit.FreeBSD.org/src/commit/?id=27894e20f140ee2729c14b589035870c8185b87d commit 27894e20f140ee2729c14b589035870c8185b87d Author: Dag-Erling Smørgrav <des@FreeBSD.org> AuthorDate: 2026-01-03 09:09:51 +0000 Commit: Dag-Erling Smørgrav <des@FreeBSD.org> CommitDate: 2026-01-03 09:10:23 +0000 libgeom: Fix segfault in 32-on-64 case We were using strtoul() to parse object identifiers, which are kernel pointers. This works fine as long as the kernel and userland match, but in a 32-bit libgeom on a 64-bit kernel this will return ULONG_MAX for all objects, resulting in memory corruption when we later pick the wrong object while resolving consumer-producer references. MFC after: 1 week PR: 292127 Reviewed by: imp Differential Revision: https://reviews.freebsd.org/D54452 --- lib/libgeom/geom_xml2tree.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/libgeom/geom_xml2tree.c b/lib/libgeom/geom_xml2tree.c index 2d2c43e29e77..161425d9fadf 100644 --- a/lib/libgeom/geom_xml2tree.c +++ b/lib/libgeom/geom_xml2tree.c @@ -76,10 +76,10 @@ StartElement(void *userData, const char *name, const char **attr) ref = NULL; for (i = 0; attr[i] != NULL; i += 2) { if (!strcmp(attr[i], "id")) { - id = (void *)strtoul(attr[i + 1], NULL, 0); + id = (void *)strtoumax(attr[i + 1], NULL, 0); mt->nident++; } else if (!strcmp(attr[i], "ref")) { - ref = (void *)strtoul(attr[i + 1], NULL, 0); + ref = (void *)strtoumax(attr[i + 1], NULL, 0); } else printf("%*.*s[%s = %s]\n", mt->level + 1, mt->level + 1, "",home | help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?6958dd10.b4b9.2aebecda>