From e18a00073890021362b4a48097672f1d4b340d3c Mon Sep 17 00:00:00 2001
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From: Daniel Axtens <dja@axtens.net>
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Date: Fri, 22 Jan 2021 14:42:21 +1100
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Subject: [PATCH] disk/lvm: Do not allow a LV to be it's own segment's node's
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LV
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This prevents infinite recursion in the diskfilter verification code.
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Signed-off-by: Daniel Axtens <dja@axtens.net>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
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---
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grub-core/disk/lvm.c | 10 +++++++---
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1 file changed, 7 insertions(+), 3 deletions(-)
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diff --git a/grub-core/disk/lvm.c b/grub-core/disk/lvm.c
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index ed0712f..81dc375 100644
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--- a/grub-core/disk/lvm.c
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+++ b/grub-core/disk/lvm.c
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@@ -838,9 +838,13 @@ grub_lvm_detect (grub_disk_t disk,
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}
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if (lv1->segments[i].nodes[j].pv == NULL)
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for (lv2 = vg->lvs; lv2; lv2 = lv2->next)
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- if (grub_strcmp (lv2->name,
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- lv1->segments[i].nodes[j].name) == 0)
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- lv1->segments[i].nodes[j].lv = lv2;
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+ {
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+ if (lv1 == lv2)
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+ continue;
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+ if (grub_strcmp (lv2->name,
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+ lv1->segments[i].nodes[j].name) == 0)
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+ lv1->segments[i].nodes[j].lv = lv2;
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+ }
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}
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}
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--
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2.14.2
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