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commit 0fa7374deaeb6d5797b85155f508efd7f6657c5b
Author: David Bidner <[email protected]>
Date: Mon Sep 21 17:44:17 2026 +0200
vm: re-find the start entry after coalescing in vm_map_protect
vm_map_protect() calls vm_map_coalesce_entry() for the start entry too.
Coalescing can merge that entry into its predecessor and free it, but the
old pointer is still passed to vm_map_pageable_scan(), which then walks the
freed entry's recycled vme_next list.
Re-find the entry containing start, with the map write lock still held,
before calling vm_map_pageable_scan(). This is the same lookup done before
the loop, so the non-coalescing path is unchanged.
Applies to GNU Mach master c5701c1c.
Message-ID: <[email protected]>
-----------------------------------------------------------------------
Summary of changes:
vm/vm_map.c | 3 +++
1 file changed, 3 insertions(+)
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