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From 7592f62383e6143a54d89885e505834c4977c4a6 Mon Sep 17 00:00:00 2001
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From: Mike Christie <mchristi@redhat.com>
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Date: Tue, 16 Aug 2016 11:44:27 -0500
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Subject: [PATCH 06/11] multipath-tools: check for initialized checker before
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For bz from upstream commit:
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commit b5773d46a4550c3c222bb415197e0bc5f09c1169
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Author: Mike Christie <mchristi@redhat.com>
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Date: Mon Aug 15 12:13:45 2016 -0500
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multipath-tools: check for initialized checker before
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This fixes a regression added with:
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015f87b16a7797a17afd514aec46e65c2a1a2f73
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We can hit a race where when pathinfo is setting up a path, the path
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could have gone down already. In the DI_CHECKER chunk we then do not
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run
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get_state and attach a checker. Later when check_path is run
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path_offline could still return PATH_DOWN or PATH_REMOVED and
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get_state is again not run so we do not get to attach a checker. I
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was then running repair_path since the state was PATH_DOWN, and we
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then
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hit a segfault.
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This has us test if a checker is selected before running repair.
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Signed-off-by: Mike Christie <mchristi@redhat.com>
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---
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libmultipath/checkers.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/libmultipath/checkers.c b/libmultipath/checkers.c
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index fa7d8b7..6cd8d34 100644
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--- a/libmultipath/checkers.c
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+++ b/libmultipath/checkers.c
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@@ -212,7 +212,7 @@ void checker_put (struct checker * dst)
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void checker_repair (struct checker * c)
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{
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- if (!c)
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+ if (!c || !checker_selected(c))
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return;
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c->message[0] = '\0';
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--
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1.8.3.1
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