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powerpc/kexec_file: Use inclusive range checks in add_usable_mem()

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add_usable_mem() adds usable memory ranges for the kdump kernel.

The ranges are inclusive, but the partial overlap check uses exclusive
comparisons. This skips ranges with base == loc_end or end == loc_base.
Use inclusive comparisons instead.

Fixes: 7c64e21a1c ("powerpc/kexec_file: Restrict memory usage of kdump kernel")
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260809162403.18142-2-thorsten.blum@linux.dev
This commit is contained in:
Thorsten Blum 2026-08-09 18:24:01 +02:00 committed by Madhavan Srinivasan
parent 8a4978c17a
commit c6755be483
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/kexec/file_load_64.c
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@ -113,7 +113,7 @@ static int add_usable_mem(struct umem_info *um_info, u64 base, u64 end)
loc_end = um_info->ranges[i].end;
if (loc_base >= base && loc_end <= end)
add = true;
else if (base < loc_end && end > loc_base) {
else if (base <= loc_end && end >= loc_base) {
if (loc_base < base)
loc_base = base;
if (loc_end > end)