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Date:      Tue, 6 Jul 2021 18:25:57 GMT
From:      Mariusz Zaborski <oshogbo@FreeBSD.org>
To:        src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org
Subject:   git: 6c33105c1a81 - stable/12 - libnv: fix double free
Message-ID:  <202107061825.166IPv9H093262@gitrepo.freebsd.org>

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The branch stable/12 has been updated by oshogbo:

URL: https://cgit.FreeBSD.org/src/commit/?id=6c33105c1a817e4cc3d6e59998fb53e8d9bd5748

commit 6c33105c1a817e4cc3d6e59998fb53e8d9bd5748
Author:     Mariusz Zaborski <oshogbo@FreeBSD.org>
AuthorDate: 2019-02-17 18:26:27 +0000
Commit:     Mariusz Zaborski <oshogbo@FreeBSD.org>
CommitDate: 2021-07-06 17:58:09 +0000

    libnv: fix double free
    
    In r343986 we introduced a double free. The structure was already
    freed fixed in the r302966. This problem was introduced
    because the GitHub version was out of sync with the FreeBSD one.
    
    Submitted by:   Mindaugas Rasiukevicius <rmind@netbsd.org>
    MFC with:       r343986
    
    (cherry picked from commit d97753b5c8f1d32fbcdcbb0d129b49f808245865)
---
 sys/contrib/libnv/nvpair.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/sys/contrib/libnv/nvpair.c b/sys/contrib/libnv/nvpair.c
index 556203f740fc..34ea8c6bc1d5 100644
--- a/sys/contrib/libnv/nvpair.c
+++ b/sys/contrib/libnv/nvpair.c
@@ -229,14 +229,6 @@ nvpair_remove_nvlist_array(nvpair_t *nvp)
 	nvlarray = __DECONST(nvlist_t **,
 	    nvpair_get_nvlist_array(nvp, &count));
 	for (i = 0; i < count; i++) {
-		nvlist_t *nvl;
-		nvpair_t *nnvp;
-
-		nvl = nvlarray[i];
-		nnvp = nvlist_get_array_next_nvpair(nvl);
-		if (nnvp != NULL) {
-			nvpair_free_structure(nnvp);
-		}
 		nvlist_set_array_next(nvl, NULL);
 		nvlist_set_parent(nvl, NULL);
 	}



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