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Diffstat (limited to 'arch/x86_64/kernel/signal.c')
-rw-r--r--arch/x86_64/kernel/signal.c26
1 files changed, 15 insertions, 11 deletions
diff --git a/arch/x86_64/kernel/signal.c b/arch/x86_64/kernel/signal.c
index 429c0269dc4e..3c5f30893715 100644
--- a/arch/x86_64/kernel/signal.c
+++ b/arch/x86_64/kernel/signal.c
@@ -34,9 +34,9 @@
34 34
35#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) 35#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
36 36
37void ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 37int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
38 sigset_t *set, struct pt_regs * regs); 38 sigset_t *set, struct pt_regs * regs);
39void ia32_setup_frame(int sig, struct k_sigaction *ka, 39int ia32_setup_frame(int sig, struct k_sigaction *ka,
40 sigset_t *set, struct pt_regs * regs); 40 sigset_t *set, struct pt_regs * regs);
41 41
42asmlinkage long 42asmlinkage long
@@ -238,7 +238,7 @@ get_stack(struct k_sigaction *ka, struct pt_regs *regs, unsigned long size)
238 return (void __user *)round_down(rsp - size, 16); 238 return (void __user *)round_down(rsp - size, 16);
239} 239}
240 240
241static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 241static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
242 sigset_t *set, struct pt_regs * regs) 242 sigset_t *set, struct pt_regs * regs)
243{ 243{
244 struct rt_sigframe __user *frame; 244 struct rt_sigframe __user *frame;
@@ -327,20 +327,23 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
327 current->comm, current->pid, frame, regs->rip, frame->pretcode); 327 current->comm, current->pid, frame, regs->rip, frame->pretcode);
328#endif 328#endif
329 329
330 return; 330 return 1;
331 331
332give_sigsegv: 332give_sigsegv:
333 force_sigsegv(sig, current); 333 force_sigsegv(sig, current);
334 return 0;
334} 335}
335 336
336/* 337/*
337 * OK, we're invoking a handler 338 * OK, we're invoking a handler
338 */ 339 */
339 340
340static void 341static int
341handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, 342handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
342 sigset_t *oldset, struct pt_regs *regs) 343 sigset_t *oldset, struct pt_regs *regs)
343{ 344{
345 int ret;
346
344#ifdef DEBUG_SIG 347#ifdef DEBUG_SIG
345 printk("handle_signal pid:%d sig:%lu rip:%lx rsp:%lx regs=%p\n", 348 printk("handle_signal pid:%d sig:%lu rip:%lx rsp:%lx regs=%p\n",
346 current->pid, sig, 349 current->pid, sig,
@@ -384,20 +387,22 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
384#ifdef CONFIG_IA32_EMULATION 387#ifdef CONFIG_IA32_EMULATION
385 if (test_thread_flag(TIF_IA32)) { 388 if (test_thread_flag(TIF_IA32)) {
386 if (ka->sa.sa_flags & SA_SIGINFO) 389 if (ka->sa.sa_flags & SA_SIGINFO)
387 ia32_setup_rt_frame(sig, ka, info, oldset, regs); 390 ret = ia32_setup_rt_frame(sig, ka, info, oldset, regs);
388 else 391 else
389 ia32_setup_frame(sig, ka, oldset, regs); 392 ret = ia32_setup_frame(sig, ka, oldset, regs);
390 } else 393 } else
391#endif 394#endif
392 setup_rt_frame(sig, ka, info, oldset, regs); 395 ret = setup_rt_frame(sig, ka, info, oldset, regs);
393 396
394 if (!(ka->sa.sa_flags & SA_NODEFER)) { 397 if (ret && !(ka->sa.sa_flags & SA_NODEFER)) {
395 spin_lock_irq(&current->sighand->siglock); 398 spin_lock_irq(&current->sighand->siglock);
396 sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask); 399 sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
397 sigaddset(&current->blocked,sig); 400 sigaddset(&current->blocked,sig);
398 recalc_sigpending(); 401 recalc_sigpending();
399 spin_unlock_irq(&current->sighand->siglock); 402 spin_unlock_irq(&current->sighand->siglock);
400 } 403 }
404
405 return ret;
401} 406}
402 407
403/* 408/*
@@ -437,8 +442,7 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset)
437 asm volatile("movq %0,%%db7" : : "r" (current->thread.debugreg7)); 442 asm volatile("movq %0,%%db7" : : "r" (current->thread.debugreg7));
438 443
439 /* Whee! Actually deliver the signal. */ 444 /* Whee! Actually deliver the signal. */
440 handle_signal(signr, &info, &ka, oldset, regs); 445 return handle_signal(signr, &info, &ka, oldset, regs);
441 return 1;
442 } 446 }
443 447
444 no_signal: 448 no_signal: