um: Fix potential integer overflow during physmem setup

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[ Upstream commit a98b7761f6 ]

This issue happens when the real map size is greater than LONG_MAX,
which can be easily triggered on UML/i386.

Fixes: fe205bdd13 ("um: Print minimum physical memory requirement")
Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20240916045950.508910-3-tiwei.btw@antgroup.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Tiwei Bie 2024-09-16 12:59:48 +08:00 • committed by Greg Kroah-Hartman

parent acfaf37888

commit a875c02315

1 changed files with 3 additions and 3 deletions

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arch/um/kernel/physmem.c

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