diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kernel/traps.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index bdf2dd1..77a7581 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -1151,6 +1151,16 @@ void __kprobes program_check_exception(struct pt_regs *regs) } #endif + /* + * If we took the program check in the kernel skip down to sending a + * SIGILL. The subsequent cases all relate to emulating instructions + * which we should only do for userspace. We also do not want to enable + * interrupts for kernel faults because that might lead to further + * faults, and loose the context of the original exception. + */ + if (!user_mode(regs)) + goto sigill; + /* We restore the interrupt state now */ if (!arch_irq_disabled_regs(regs)) local_irq_enable(); @@ -1179,6 +1189,7 @@ void __kprobes program_check_exception(struct pt_regs *regs) } } +sigill: if (reason & REASON_PRIVILEGED) _exception(SIGILL, regs, ILL_PRVOPC, regs->nip); else |