Use ___va() to convert the real address that will skip the input validation. We can get interrupts with IR=0 and with NIP value > PAGE_OFFSET.
Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.ibm.com> --- arch/powerpc/include/asm/processor.h | 9 +++++++++ arch/powerpc/kernel/process.c | 7 ++----- 2 files changed, 11 insertions(+), 5 deletions(-) diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index 4e53df163b92..8bf7921dceca 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -441,6 +441,15 @@ extern void cvt_fd(float *from, double *to); extern void cvt_df(double *from, float *to); extern void _nmask_and_or_msr(unsigned long nmask, unsigned long or_val); +static inline unsigned long fixup_real_addr(struct pt_regs *regs, + unsigned long addr) +{ + if (!(regs->msr & MSR_IR)) + return (unsigned long)___va(addr); + + return addr; +} + #ifdef CONFIG_PPC64 /* * We handle most unaligned accesses in hardware. On the other hand diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 93bf4a766707..de07b796222d 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -1262,12 +1262,9 @@ static void show_instructions(struct pt_regs *regs) /* If executing with the IMMU off, adjust pc rather * than print XXXXXXXX. */ - if (!(regs->msr & MSR_IR)) { - pc = (unsigned long)phys_to_virt(pc); - nip = (unsigned long)phys_to_virt(regs->nip); - } + pc = fixup_real_addr(regs, pc); + nip = fixup_real_addr(regs, nip); #endif - for (i = 0; i < NR_INSN_TO_PRINT; i++) { int instr; -- 2.26.2