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[ Upstream commit0c710050c4] Handle VM_FAULT_SIGSEGV in the page fault path so that we correctly kill the process and we don't BUG() the kernel. Fixes:07037db5d4("RISC-V: Paging and MMU") Signed-off-by: Zhe Qiao <qiaozhe@iscas.ac.cn> Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com> Link: https://lore.kernel.org/r/20240731084547.85380-1-qiaozhe@iscas.ac.cn Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> Signed-off-by: Sasha Levin <sashal@kernel.org>