riscv: Check if the code to patch lies in the exit section

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[ Upstream commit 420370f3ae ]

Otherwise we fall through to vmalloc_to_page() which panics since the
address does not lie in the vmalloc region.

Fixes: 043cb41a85 ("riscv: introduce interfaces to patch kernel code")
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Charlie Jenkins <charlie@rivosinc.com>
Link: https://lore.kernel.org/r/20231214091926.203439-1-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Alexandre Ghiti 2023-12-14 10:19:26 +01:00 • committed by Greg Kroah-Hartman

parent e111d2319a

commit 8db56df4a9

4 changed files with 15 additions and 1 deletions

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1

arch/riscv/include/asm/sections.h

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11

arch/riscv/kernel/patch.c

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arch/riscv/kernel/vmlinux-xip.lds.S

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arch/riscv/kernel/vmlinux.lds.S

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