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disk/lvm: Do not allow a LV to be it's own segment's node's LV

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This prevents infinite recursion in the diskfilter verification code.

Signed-off-by: Daniel Axtens <dja@axtens.net>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Daniel Axtens authored and Daniel Kiper committed 2021-03-02 15:54:19 +01:00
1 parent 7012936847
commit e18a000738
1 file changed
+7 -3
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grub-core/disk/lvm.c
+7 -3
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@@ -981,9 +981,13 @@ grub_lvm_detect (grub_disk_t disk,
} }
if (lv1->segments[i].nodes[j].pv == NULL) if (lv1->segments[i].nodes[j].pv == NULL)
for (lv2 = vg->lvs; lv2; lv2 = lv2->next) for (lv2 = vg->lvs; lv2; lv2 = lv2->next)
if (grub_strcmp (lv2->name, {
lv1->segments[i].nodes[j].name) == 0) if (lv1 == lv2)
lv1->segments[i].nodes[j].lv = lv2; continue;
if (grub_strcmp (lv2->name,
lv1->segments[i].nodes[j].name) == 0)
lv1->segments[i].nodes[j].lv = lv2;
}
} }
} }