From: Ian Munsie <imun...@au1.ibm.com>
If the system has a PCI device with a memory-controller device node,
kexec-lite would spew hundreds of double free warnings and eventually
segfault. This would result in a "kexec load failed" message from
petitboot.
This was due to kexec_memory_map() searching for "memory" nodes, but
actually matching any node that started with "memory", including these
"memory-controller" nodes. This patch changes the search to look for
nodes starting with "memory@", which should only match memory nodes.
An example of a device tree that can trigger this bug is as follows:
{
pciex@3fffe40000000 {
...
pci@0 {
#address-cells = <0x3>;
#size-cells = <0x2>;
...
memory-controller@0 {
reg = <0x10000 0x0 0x0 0x0 0x0>;
...
};
};
};
};
Signed-off-by: Ian Munsie <imun...@au1.ibm.com>
---
kexec_memory_map.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kexec_memory_map.c b/kexec_memory_map.c
index fc1b7af..7f18de7 100644
--- a/kexec_memory_map.c
+++ b/kexec_memory_map.c
@@ -192,7 +192,7 @@ void kexec_memory_map(void *fdt, int reserve_initrd)
name = fdt_get_name(fdt, nodeoffset, NULL);
- if (!name || strncmp(name, "memory", strlen("memory")))
+ if (!name || strncmp(name, "memory@", strlen("memory@")))
continue;
reg = fdt_getprop(fdt, nodeoffset, "reg", &len);
--
2.1.4
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