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Diffstat (limited to 'arch/s390/mm/fault.c')
-rw-r--r--arch/s390/mm/fault.c32
1 files changed, 17 insertions, 15 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 3040d7c78fe0..2505b2ea0ef1 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -48,10 +48,6 @@
48#define __PF_RES_FIELD 0x8000000000000000ULL 48#define __PF_RES_FIELD 0x8000000000000000ULL
49#endif /* CONFIG_64BIT */ 49#endif /* CONFIG_64BIT */
50 50
51#ifdef CONFIG_SYSCTL
52extern int sysctl_userprocess_debug;
53#endif
54
55#define VM_FAULT_BADCONTEXT 0x010000 51#define VM_FAULT_BADCONTEXT 0x010000
56#define VM_FAULT_BADMAP 0x020000 52#define VM_FAULT_BADMAP 0x020000
57#define VM_FAULT_BADACCESS 0x040000 53#define VM_FAULT_BADACCESS 0x040000
@@ -120,6 +116,22 @@ static inline int user_space_fault(unsigned long trans_exc_code)
120 return trans_exc_code != 3; 116 return trans_exc_code != 3;
121} 117}
122 118
119static inline void report_user_fault(struct pt_regs *regs, long int_code,
120 int signr, unsigned long address)
121{
122 if ((task_pid_nr(current) > 1) && !show_unhandled_signals)
123 return;
124 if (!unhandled_signal(current, signr))
125 return;
126 if (!printk_ratelimit())
127 return;
128 printk("User process fault: interruption code 0x%lX ", int_code);
129 print_vma_addr(KERN_CONT "in ", regs->psw.addr & PSW_ADDR_INSN);
130 printk("\n");
131 printk("failing address: %lX\n", address);
132 show_regs(regs);
133}
134
123/* 135/*
124 * Send SIGSEGV to task. This is an external routine 136 * Send SIGSEGV to task. This is an external routine
125 * to keep the stack usage of do_page_fault small. 137 * to keep the stack usage of do_page_fault small.
@@ -133,17 +145,7 @@ static noinline void do_sigsegv(struct pt_regs *regs, long int_code,
133 address = trans_exc_code & __FAIL_ADDR_MASK; 145 address = trans_exc_code & __FAIL_ADDR_MASK;
134 current->thread.prot_addr = address; 146 current->thread.prot_addr = address;
135 current->thread.trap_no = int_code; 147 current->thread.trap_no = int_code;
136#if defined(CONFIG_SYSCTL) || defined(CONFIG_PROCESS_DEBUG) 148 report_user_fault(regs, int_code, SIGSEGV, address);
137#if defined(CONFIG_SYSCTL)
138 if (sysctl_userprocess_debug)
139#endif
140 {
141 printk("User process fault: interruption code 0x%lX\n",
142 int_code);
143 printk("failing address: %lX\n", address);
144 show_regs(regs);
145 }
146#endif
147 si.si_signo = SIGSEGV; 149 si.si_signo = SIGSEGV;
148 si.si_code = si_code; 150 si.si_code = si_code;
149 si.si_addr = (void __user *) address; 151 si.si_addr = (void __user *) address;