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powerpc/kasan: Fix stack overflow by increasing THREAD_SHIFT

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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
This commit is contained in:
Christophe Leroy 2020-04-08 15:58:49 +00:00 committed by Michael Ellerman
parent 4cdb2da654
commit edbadaf067
1 changed files with 1 additions and 0 deletions
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arch/powerpc/Kconfig
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@ -772,6 +772,7 @@ config THREAD_SHIFT
range 13 15 range 13 15
default "15" if PPC_256K_PAGES default "15" if PPC_256K_PAGES
default "14" if PPC64 default "14" if PPC64
default "14" if KASAN
default "13" default "13"
help help
Used to define the stack size. The default is almost always what you Used to define the stack size. The default is almost always what you