From: Mark Salyzyn Date: Tue, 13 Oct 2015 21:30:51 +0000 (-0700) Subject: arm64: AArch32 user space PC alignment exception X-Git-Tag: v4.13~4251^2~48 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=77f3228f771506bac4b1308571a62c769552f8f8;p=mirror_ubuntu-bionic-kernel.git arm64: AArch32 user space PC alignment exception ARMv7 does not have a PC alignment exception. ARMv8 AArch32 user space however can produce a PC alignment exception. Add handler so that we do not dump an unexpected stack trace in the logs. Signed-off-by: Mark Salyzyn Signed-off-by: Catalin Marinas --- diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S index 4306c937b1ff..7ed3d75f6304 100644 --- a/arch/arm64/kernel/entry.S +++ b/arch/arm64/kernel/entry.S @@ -430,6 +430,8 @@ el0_sync_compat: b.eq el0_fpsimd_acc cmp x24, #ESR_ELx_EC_FP_EXC32 // FP/ASIMD exception b.eq el0_fpsimd_exc + cmp x24, #ESR_ELx_EC_PC_ALIGN // pc alignment exception + b.eq el0_sp_pc cmp x24, #ESR_ELx_EC_UNKNOWN // unknown exception in EL0 b.eq el0_undef cmp x24, #ESR_ELx_EC_CP15_32 // CP15 MRC/MCR trap