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efi_loader: efi_dp_part_node check dp_alloc return value

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dp_alloc() may return NULL. This needs to be caught.

Fixes: 98d48bdf41 ("efi_loader: provide a function to create a partition node")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
This commit is contained in:
Heinrich Schuchardt
2022-10-06 13:36:02 +02:00
parent 80fadf4af6
commit 01caf28778
2 changed files with 7 additions and 1 deletions
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3
lib/efi_loader/efi_device_path.c
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@@ -936,7 +936,8 @@ struct efi_device_path *efi_dp_part_node(struct blk_desc *desc, int part)
dpsize = sizeof(struct efi_device_path_hard_drive_path);
buf = dp_alloc(dpsize);
dp_part_node(buf, desc, part);
if (buf)
dp_part_node(buf, desc, part);
return buf;
}