!92 mdadm: Fix double free

From: @liuh0329 
Reviewed-by: @swf504 
Signed-off-by: @swf504
This commit is contained in:
openeuler-ci-bot 2024-06-05 11:42:36 +00:00 committed by Gitee
commit dd3ff69d9b
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2 changed files with 38 additions and 1 deletions

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@ -0,0 +1,33 @@
From 5ce5a15f0bf007e850e15259bba4f53736605fb2 Mon Sep 17 00:00:00 2001
From: Lukasz Florczak <lukasz.florczak@linux.intel.com>
Date: Fri, 25 Mar 2022 12:48:59 +0100
Subject: mdadm: Fix double free
If there was a size mismatch after creation it would get fixed on grow
in imsm_fix_size_mismatch(), but due to double free "double free or corruption (fasttop)"
error occurs and grow cannot proceed.
Signed-off-by: Lukasz Florczak <lukasz.florczak@linux.intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
---
super-intel.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/super-intel.c b/super-intel.c
index d5fad10..bf6ba9f 100644
--- a/super-intel.c
+++ b/super-intel.c
@@ -11783,9 +11783,8 @@ static int imsm_fix_size_mismatch(struct supertype *st, int subarray_index)
st->update_tail = &st->updates;
} else {
imsm_sync_metadata(st);
+ free(update);
}
-
- free(update);
}
ret_val = 0;
exit:
--
2.27.0

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@ -1,6 +1,6 @@
Name: mdadm
Version: 4.2
Release: 10
Release: 11
Summary: The software RAID arrays user manage tools
License: GPLv2+
URL: http://www.kernel.org/pub/linux/utils/raid/mdadm/
@ -21,6 +21,7 @@ Patch8: 0008-fix-NULL-dereference-in-super_by_fd.patch
Patch9: 0009-fix-mdmonitor-oneshot.service-start-error.patch
Patch10: 0010-Fix-null-pointer-for-incremental-in-mdadm.patch
Patch11: 0011-Fix-race-of-mdadm-add-and-mdadm-incremental.patch
Patch12: 0012-mdadm-Fix-double-free.patch
BuildRequires: systemd gcc binutils libudev-devel
Requires(post): systemd coreutils
@ -86,6 +87,9 @@ install -d -m 710 %{buildroot}/var/run/mdadm/
%{_mandir}/man*/*
%changelog
* Wed May 29 2024 liuh <liuhuan01@kylinos.cn> - 4.2-11
- sync patch from community
* Thu Dec 14 2023 wuguanghao <wuguanghao3@huawei.com> - 4.2-10
* Fix race of "mdadm --add" and "mdadm --incremental"