From 0cf650f0459def7d1929c5274a71df8630ef96cc Mon Sep 17 00:00:00 2001
From: Andrea Monaco <andrea.monaco@autistici.org>
Date: Sun, 21 Nov 2021 20:21:33 +0100
Subject: acpi: Unignore some mmap failure

* acpi/acpi.c (acpi_get_num_tables): Do not ignore mmap failure.
---
 acpi/acpi.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'acpi/acpi.c')

diff --git a/acpi/acpi.c b/acpi/acpi.c
index a6ad1609..94b449a9 100644
--- a/acpi/acpi.c
+++ b/acpi/acpi.c
@@ -138,6 +138,11 @@ acpi_get_num_tables(size_t *num_tables)
         err = mmap_phys_acpi_header(acpi_ptr32, &next, &virt_addr2, fd_mem);
       }
 
+      if (err) {
+        munmap(virt_addr, ESCD_SIZE);
+        return err;
+      }
+
       if (next->signature[0] == '\0' || next->length == 0) {
         munmap(virt_addr2, ESCD_SIZE);
         continue;
-- 
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