diff options
Diffstat (limited to 'arch')
-rw-r--r-- | arch/x86/include/asm/extable.h | 9 | ||||
-rw-r--r-- | arch/x86/kernel/cpu/mce/severity.c | 5 | ||||
-rw-r--r-- | arch/x86/mm/extable.c | 12 |
3 files changed, 20 insertions, 6 deletions
diff --git a/arch/x86/include/asm/extable.h b/arch/x86/include/asm/extable.h index d8c2198d543b..1f0cbc52937c 100644 --- a/arch/x86/include/asm/extable.h +++ b/arch/x86/include/asm/extable.h @@ -29,10 +29,17 @@ struct pt_regs; (b)->handler = (tmp).handler - (delta); \ } while (0) +enum handler_type { + EX_HANDLER_NONE, + EX_HANDLER_FAULT, + EX_HANDLER_UACCESS, + EX_HANDLER_OTHER +}; + extern int fixup_exception(struct pt_regs *regs, int trapnr, unsigned long error_code, unsigned long fault_addr); extern int fixup_bug(struct pt_regs *regs, int trapnr); -extern bool ex_has_fault_handler(unsigned long ip); +extern enum handler_type ex_get_fault_handler_type(unsigned long ip); extern void early_fixup_exception(struct pt_regs *regs, int trapnr); #endif diff --git a/arch/x86/kernel/cpu/mce/severity.c b/arch/x86/kernel/cpu/mce/severity.c index 0b072dc231ad..c6494e6579c1 100644 --- a/arch/x86/kernel/cpu/mce/severity.c +++ b/arch/x86/kernel/cpu/mce/severity.c @@ -225,10 +225,13 @@ static struct severity { */ static int error_context(struct mce *m, struct pt_regs *regs) { + enum handler_type t; + if ((m->cs & 3) == 3) return IN_USER; - if (mc_recoverable(m->mcgstatus) && ex_has_fault_handler(m->ip)) { + t = ex_get_fault_handler_type(m->ip); + if (mc_recoverable(m->mcgstatus) && t == EX_HANDLER_FAULT) { m->kflags |= MCE_IN_KERNEL_RECOV; return IN_KERNEL_RECOV; } diff --git a/arch/x86/mm/extable.c b/arch/x86/mm/extable.c index 1d6cb07f4f86..de43525df69b 100644 --- a/arch/x86/mm/extable.c +++ b/arch/x86/mm/extable.c @@ -125,17 +125,21 @@ __visible bool ex_handler_clear_fs(const struct exception_table_entry *fixup, } EXPORT_SYMBOL(ex_handler_clear_fs); -__visible bool ex_has_fault_handler(unsigned long ip) +enum handler_type ex_get_fault_handler_type(unsigned long ip) { const struct exception_table_entry *e; ex_handler_t handler; e = search_exception_tables(ip); if (!e) - return false; + return EX_HANDLER_NONE; handler = ex_fixup_handler(e); - - return handler == ex_handler_fault; + if (handler == ex_handler_fault) + return EX_HANDLER_FAULT; + else if (handler == ex_handler_uaccess) + return EX_HANDLER_UACCESS; + else + return EX_HANDLER_OTHER; } int fixup_exception(struct pt_regs *regs, int trapnr, unsigned long error_code, |