diff options
Diffstat (limited to 'arch/x86/mm/fault_64.c')
| -rw-r--r-- | arch/x86/mm/fault_64.c | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/arch/x86/mm/fault_64.c b/arch/x86/mm/fault_64.c index 0d3d5979ce2c..dcf430bb62ee 100644 --- a/arch/x86/mm/fault_64.c +++ b/arch/x86/mm/fault_64.c @@ -252,6 +252,18 @@ static int is_prefetch(struct pt_regs *regs, unsigned long addr, return prefetch; } +static void force_sig_info_fault(int si_signo, int si_code, + unsigned long address, struct task_struct *tsk) +{ + siginfo_t info; + + info.si_signo = si_signo; + info.si_errno = 0; + info.si_code = si_code; + info.si_addr = (void __user *)address; + force_sig_info(si_signo, &info, tsk); +} + static int bad_address(void *p) { unsigned long dummy; @@ -415,7 +427,7 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs, unsigned long address; int write, fault; unsigned long flags; - siginfo_t info; + int si_code; /* * We can fault from pretty much anywhere, with unknown IRQ state. @@ -429,7 +441,7 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs, /* get the address */ address = read_cr2(); - info.si_code = SEGV_MAPERR; + si_code = SEGV_MAPERR; /* @@ -532,7 +544,7 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs, * we can handle it.. */ good_area: - info.si_code = SEGV_ACCERR; + si_code = SEGV_ACCERR; write = 0; switch (error_code & (PF_PROT|PF_WRITE)) { default: /* 3: write, present */ @@ -611,11 +623,8 @@ bad_area_nosemaphore: /* Kernel addresses are always protection faults */ tsk->thread.error_code = error_code | (address >= TASK_SIZE); tsk->thread.trap_no = 14; - info.si_signo = SIGSEGV; - info.si_errno = 0; - /* info.si_code has been set above */ - info.si_addr = (void __user *)address; - force_sig_info(SIGSEGV, &info, tsk); + + force_sig_info_fault(SIGSEGV, si_code, address, tsk); return; } @@ -682,11 +691,7 @@ do_sigbus: tsk->thread.cr2 = address; tsk->thread.error_code = error_code; tsk->thread.trap_no = 14; - info.si_signo = SIGBUS; - info.si_errno = 0; - info.si_code = BUS_ADRERR; - info.si_addr = (void __user *)address; - force_sig_info(SIGBUS, &info, tsk); + force_sig_info_fault(SIGBUS, BUS_ADRERR, address, tsk); return; } |