svn commit: r339144 - stable/11/sys/cddl/contrib/opensolaris/common/nvpair

[Alexander Motin]

Author: mav
Date: Wed Oct  3 14:57:54 2018
New Revision: 339144
URL: https://svnweb.freebsd.org/changeset/base/339144

Log:
  MFC r337219: MFV r337218: 7261 nvlist code should enforce name length limit
  
  illumos/illumos-gate at 48dd5e630c9b1773b7b10d08a3b90b6c9062d713
  
  Reviewed by: Sebastien Roy <sebastien.roy at delphix.com>
  Reviewed by: George Wilson <george.wilson at delphix.com>
  Reviewed by: Robert Mustacchi <rm at joyent.com>
  Approved by: Dan McDonald <danmcd at omniti.com>
  Author: Matthew Ahrens <mahrens at delphix.com>

Modified:
  stable/11/sys/cddl/contrib/opensolaris/common/nvpair/opensolaris_nvpair.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/cddl/contrib/opensolaris/common/nvpair/opensolaris_nvpair.c
==============================================================================
--- stable/11/sys/cddl/contrib/opensolaris/common/nvpair/opensolaris_nvpair.c	Wed Oct  3 14:57:19 2018	(r339143)
+++ stable/11/sys/cddl/contrib/opensolaris/common/nvpair/opensolaris_nvpair.c	Wed Oct  3 14:57:54 2018	(r339144)
@@ -914,6 +914,8 @@ nvlist_add_common(nvlist_t *nvl, const char *name,
 
 	/* calculate sizes of the nvpair elements and the nvpair itself */
 	name_sz = strlen(name) + 1;
+	if (name_sz >= 1ULL << (sizeof (nvp->nvp_name_sz) * 8 - 1))
+		return (EINVAL);
 
 	nvp_sz = NVP_SIZE_CALC(name_sz, value_sz);