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44 lines
1.5 KiB
44 lines
1.5 KiB
From 890212d6800646153210ac264ce73035cc7dd5cc Mon Sep 17 00:00:00 2001
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From: miaoguanqin <miaoguanqin@huawei.com>
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Date: Tue, 4 Apr 2023 19:31:24 +0800
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Subject: [PATCH 116/125] Fix null pointer for incremental in mdadm
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when we excute mdadm --assemble, udev-md-raid-assembly.rules is triggered.
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Then we stop array, we found an coredump for mdadm --incremental.func
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stack are as follows:
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#0 enough (level=10, raid_disks=4, layout=258, clean=1,
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avail=avail@entry=0x0) at util.c:555
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#1 0x0000562170c26965 in Incremental (devlist=<optimized out>,
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c=<optimized out>, st=0x5621729b6dc0) at Incremental.c:514
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#2 0x0000562170bfb6ff in main (argc=<optimized out>,
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argv=<optimized out>) at mdadm.c:1762
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func enough() use array avail,avail allocate space in func count_active,
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it may not alloc space, causing a coredump.We fix this coredump.
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Signed-off-by: Guanqin Miao <miaoguanqin@huawei.com>
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Signed-off-by: lixiaokeng <lixiaokeng@huawei.com>
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Signed-off-by: Jes Sorensen <jes@trained-monkey.org>
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---
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Incremental.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/Incremental.c b/Incremental.c
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index 09b94b9f..49a71f72 100644
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--- a/Incremental.c
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+++ b/Incremental.c
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@@ -507,6 +507,9 @@ int Incremental(struct mddev_dev *devlist, struct context *c,
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GET_OFFSET | GET_SIZE));
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active_disks = count_active(st, sra, mdfd, &avail, &info);
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+ if (!avail)
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+ goto out_unlock;
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+
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journal_device_missing = (info.journal_device_required) && (info.journal_clean == 0);
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if (info.consistency_policy == CONSISTENCY_POLICY_PPL)
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--
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2.38.1
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