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a784a3a39c
Add three more checks for buflen and numwritten. The buflen should be at least two, that means at least one char and the null-end. The error case check is added by checking numwriten < 0 instead of numwritten < 1. And the truncate case is checked. The test will exit if any of these conditions aren't met. Additionally, add more print information when a write failure occurs or a truncated write happens, providing clearer diagnostics. Link: https://lore.kernel.org/20260402014543.1671131-5-chuhu@redhat.com Signed-off-by: Chunyu Hu <chuhu@redhat.com> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Reviewed-by: Lorenzo Stoakes <ljs@kernel.org> Cc: Nico Pache <npache@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>