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Diffstat (limited to 'arch/s390/mm/fault.c')
-rw-r--r--arch/s390/mm/fault.c25
1 files changed, 6 insertions, 19 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index df75d574246d..7b0bb475c166 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -67,20 +67,6 @@ static int __init fault_init(void)
}
early_initcall(fault_init);
-static inline int notify_page_fault(struct pt_regs *regs)
-{
- int ret = 0;
-
- /* kprobe_running() needs smp_processor_id() */
- if (kprobes_built_in() && !user_mode(regs)) {
- preempt_disable();
- if (kprobe_running() && kprobe_fault_handler(regs, 14))
- ret = 1;
- preempt_enable();
- }
- return ret;
-}
-
/*
* Find out which address space caused the exception.
*/
@@ -248,8 +234,7 @@ static noinline void do_sigsegv(struct pt_regs *regs, int si_code)
{
report_user_fault(regs, SIGSEGV, 1);
force_sig_fault(SIGSEGV, si_code,
- (void __user *)(regs->int_parm_long & __FAIL_ADDR_MASK),
- current);
+ (void __user *)(regs->int_parm_long & __FAIL_ADDR_MASK));
}
const struct exception_table_entry *s390_search_extables(unsigned long addr)
@@ -310,8 +295,7 @@ static noinline void do_sigbus(struct pt_regs *regs)
* or user mode.
*/
force_sig_fault(SIGBUS, BUS_ADRERR,
- (void __user *)(regs->int_parm_long & __FAIL_ADDR_MASK),
- current);
+ (void __user *)(regs->int_parm_long & __FAIL_ADDR_MASK));
}
static noinline int signal_return(struct pt_regs *regs)
@@ -343,6 +327,7 @@ static noinline void do_fault_error(struct pt_regs *regs, int access,
case VM_FAULT_BADACCESS:
if (access == VM_EXEC && signal_return(regs) == 0)
break;
+ /* fallthrough */
case VM_FAULT_BADMAP:
/* Bad memory access. Check if it is kernel or user space. */
if (user_mode(regs)) {
@@ -352,7 +337,9 @@ static noinline void do_fault_error(struct pt_regs *regs, int access,
do_sigsegv(regs, si_code);
break;
}
+ /* fallthrough */
case VM_FAULT_BADCONTEXT:
+ /* fallthrough */
case VM_FAULT_PFAULT:
do_no_context(regs);
break;
@@ -414,7 +401,7 @@ static inline vm_fault_t do_exception(struct pt_regs *regs, int access)
*/
clear_pt_regs_flag(regs, PIF_PER_TRAP);
- if (notify_page_fault(regs))
+ if (kprobe_page_fault(regs, 14))
return 0;
mm = tsk->mm;