diff options
Diffstat (limited to 'arch/s390/mm/fault.c')
| -rw-r--r-- | arch/s390/mm/fault.c | 37 |
1 files changed, 19 insertions, 18 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index fc102e70d9c..2505b2ea0ef 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -30,6 +30,7 @@ #include <linux/kprobes.h> #include <linux/uaccess.h> #include <linux/hugetlb.h> +#include <asm/asm-offsets.h> #include <asm/system.h> #include <asm/pgtable.h> #include <asm/s390_ext.h> @@ -47,10 +48,6 @@ #define __PF_RES_FIELD 0x8000000000000000ULL #endif /* CONFIG_64BIT */ -#ifdef CONFIG_SYSCTL -extern int sysctl_userprocess_debug; -#endif - #define VM_FAULT_BADCONTEXT 0x010000 #define VM_FAULT_BADMAP 0x020000 #define VM_FAULT_BADACCESS 0x040000 @@ -59,15 +56,13 @@ static inline int notify_page_fault(struct pt_regs *regs) { int ret = 0; -#ifdef CONFIG_KPROBES /* kprobe_running() needs smp_processor_id() */ - if (!user_mode(regs)) { + if (kprobes_built_in() && !user_mode(regs)) { preempt_disable(); if (kprobe_running() && kprobe_fault_handler(regs, 14)) ret = 1; preempt_enable(); } -#endif return ret; } @@ -121,6 +116,22 @@ static inline int user_space_fault(unsigned long trans_exc_code) return trans_exc_code != 3; } +static inline void report_user_fault(struct pt_regs *regs, long int_code, + int signr, unsigned long address) +{ + if ((task_pid_nr(current) > 1) && !show_unhandled_signals) + return; + if (!unhandled_signal(current, signr)) + return; + if (!printk_ratelimit()) + return; + printk("User process fault: interruption code 0x%lX ", int_code); + print_vma_addr(KERN_CONT "in ", regs->psw.addr & PSW_ADDR_INSN); + printk("\n"); + printk("failing address: %lX\n", address); + show_regs(regs); +} + /* * Send SIGSEGV to task. This is an external routine * to keep the stack usage of do_page_fault small. @@ -134,17 +145,7 @@ static noinline void do_sigsegv(struct pt_regs *regs, long int_code, address = trans_exc_code & __FAIL_ADDR_MASK; current->thread.prot_addr = address; current->thread.trap_no = int_code; -#if defined(CONFIG_SYSCTL) || defined(CONFIG_PROCESS_DEBUG) -#if defined(CONFIG_SYSCTL) - if (sysctl_userprocess_debug) -#endif - { - printk("User process fault: interruption code 0x%lX\n", - int_code); - printk("failing address: %lX\n", address); - show_regs(regs); - } -#endif + report_user_fault(regs, int_code, SIGSEGV, address); si.si_signo = SIGSEGV; si.si_code = si_code; si.si_addr = (void __user *) address; |