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37 lines
1.1 KiB
37 lines
1.1 KiB
2 years ago
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From 9ae62977b51dab0f4bb46b1c8ea5ebd1705b2f4d Mon Sep 17 00:00:00 2001
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From: Logan Gunthorpe <logang@deltatee.com>
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Date: Wed, 22 Jun 2022 14:25:10 -0600
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Subject: [PATCH 35/83] monitor: Avoid segfault when calling NULL
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get_bad_blocks
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Not all struct superswitch implement a get_bad_blocks() function,
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yet mdmon seems to call it without checking for NULL and thus
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occasionally segfaults in the test 10ddf-geometry.
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Fix this by checking for NULL before calling it.
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Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
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Acked-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
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Signed-off-by: Jes Sorensen <jes@trained-monkey.org>
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---
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monitor.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/monitor.c b/monitor.c
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index b877e595..820a93d0 100644
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--- a/monitor.c
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+++ b/monitor.c
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@@ -311,6 +311,9 @@ static int check_for_cleared_bb(struct active_array *a, struct mdinfo *mdi)
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struct md_bb *bb;
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int i;
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+ if (!ss->get_bad_blocks)
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+ return -1;
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+
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/*
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* Get a list of bad blocks for an array, then read list of
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* acknowledged bad blocks from kernel and compare it against metadata
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--
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2.38.1
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