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powerpc/kasan: Fix stack overflow by increasing THREAD_SHIFT
[ Upstream commitedbadaf067
] When CONFIG_KASAN is selected, the stack usage is increased. In the same way as x86 and arm64 architectures, increase THREAD_SHIFT when CONFIG_KASAN is selected. Fixes:2edb16efc8
("powerpc/32: Add KASAN support") Reported-by: <erhard_f@mailbox.org> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://bugzilla.kernel.org/show_bug.cgi?id=207129 Link: https://lore.kernel.org/r/2c50f3b1c9bbaa4217c9a98f3044bd2a36c46a4f.1586361277.git.christophe.leroy@c-s.fr Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -747,6 +747,7 @@ config THREAD_SHIFT
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range 13 15
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default "15" if PPC_256K_PAGES
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default "14" if PPC64
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default "14" if KASAN
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default "13"
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help
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Used to define the stack size. The default is almost always what you
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