savesegment(es, tmp);
err |= __put_user(tmp, (unsigned int __user *)&sc->es);
- err |= __put_user((u32)regs->di, &sc->di);
- err |= __put_user((u32)regs->si, &sc->si);
- err |= __put_user((u32)regs->bp, &sc->bp);
- err |= __put_user((u32)regs->sp, &sc->sp);
- err |= __put_user((u32)regs->bx, &sc->bx);
- err |= __put_user((u32)regs->dx, &sc->dx);
- err |= __put_user((u32)regs->cx, &sc->cx);
- err |= __put_user((u32)regs->ax, &sc->ax);
- err |= __put_user((u32)regs->cs, &sc->cs);
- err |= __put_user((u32)regs->ss, &sc->ss);
+ err |= __put_user(regs->di, &sc->di);
+ err |= __put_user(regs->si, &sc->si);
+ err |= __put_user(regs->bp, &sc->bp);
+ err |= __put_user(regs->sp, &sc->sp);
+ err |= __put_user(regs->bx, &sc->bx);
+ err |= __put_user(regs->dx, &sc->dx);
+ err |= __put_user(regs->cx, &sc->cx);
+ err |= __put_user(regs->ax, &sc->ax);
+ err |= __put_user(regs->cs, &sc->cs);
+ err |= __put_user(regs->ss, &sc->ss);
err |= __put_user(current->thread.trap_no, &sc->trapno);
err |= __put_user(current->thread.error_code, &sc->err);
- err |= __put_user((u32)regs->ip, &sc->ip);
- err |= __put_user((u32)regs->flags, &sc->flags);
- err |= __put_user((u32)regs->sp, &sc->sp_at_signal);
+ err |= __put_user(regs->ip, &sc->ip);
+ err |= __put_user(regs->flags, &sc->flags);
+ err |= __put_user(regs->sp, &sc->sp_at_signal);
tmp = save_i387_xstate_ia32(fpstate);
if (tmp < 0)
err = -EFAULT;
- else {
- clear_used_math();
- stts();
+ else
err |= __put_user(ptr_to_compat(tmp ? fpstate : NULL),
&sc->fpstate);
- }
/* non-iBCS2 extensions.. */
err |= __put_user(mask, &sc->oldmask);
frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate);
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- goto give_sigsegv;
+ return -EFAULT;
- err |= __put_user(sig, &frame->sig);
- if (err)
- goto give_sigsegv;
+ if (__put_user(sig, &frame->sig))
+ return -EFAULT;
- err |= ia32_setup_sigcontext(&frame->sc, fpstate, regs, set->sig[0]);
- if (err)
- goto give_sigsegv;
+ if (ia32_setup_sigcontext(&frame->sc, fpstate, regs, set->sig[0]))
+ return -EFAULT;
if (_COMPAT_NSIG_WORDS > 1) {
- err |= __copy_to_user(frame->extramask, &set->sig[1],
- sizeof(frame->extramask));
- if (err)
- goto give_sigsegv;
+ if (__copy_to_user(frame->extramask, &set->sig[1],
+ sizeof(frame->extramask)))
+ return -EFAULT;
}
if (ka->sa.sa_flags & SA_RESTORER) {
*/
err |= __copy_to_user(frame->retcode, &code, 8);
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* Set up registers for signal handler */
regs->sp = (unsigned long) frame;
#endif
return 0;
-
-give_sigsegv:
- force_sigsegv(sig, current);
- return -EFAULT;
}
int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate);
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- goto give_sigsegv;
+ return -EFAULT;
err |= __put_user(sig, &frame->sig);
err |= __put_user(ptr_to_compat(&frame->info), &frame->pinfo);
err |= __put_user(ptr_to_compat(&frame->uc), &frame->puc);
err |= copy_siginfo_to_user32(&frame->info, info);
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* Create the ucontext. */
if (cpu_has_xsave)
regs, set->sig[0]);
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
if (err)
- goto give_sigsegv;
+ return -EFAULT;
if (ka->sa.sa_flags & SA_RESTORER)
restorer = ka->sa.sa_restorer;
*/
err |= __copy_to_user(frame->retcode, &code, 8);
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* Set up registers for signal handler */
regs->sp = (unsigned long) frame;
#endif
return 0;
-
-give_sigsegv:
- force_sigsegv(sig, current);
- return -EFAULT;
}
#include <asm/uaccess.h>
#include <asm/i387.h>
#include <asm/vdso.h>
+#include <asm/syscall.h>
#include <asm/syscalls.h>
#include "sigframe.h"
return do_sigaltstack(uss, uoss, regs->sp);
}
+#define COPY(x) { \
+ err |= __get_user(regs->x, &sc->x); \
+}
+
+#define COPY_SEG(seg) { \
+ unsigned short tmp; \
+ err |= __get_user(tmp, &sc->seg); \
+ regs->seg = tmp; \
+}
+
+#define COPY_SEG_STRICT(seg) { \
+ unsigned short tmp; \
+ err |= __get_user(tmp, &sc->seg); \
+ regs->seg = tmp | 3; \
+}
+
+#define GET_SEG(seg) { \
+ unsigned short tmp; \
+ err |= __get_user(tmp, &sc->seg); \
+ loadsegment(seg, tmp); \
+}
/*
* Do a signal return; undo the signal stack.
restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
unsigned long *pax)
{
+ void __user *buf;
+ unsigned int tmpflags;
unsigned int err = 0;
/* Always make any pending restarted system calls return -EINTR */
current_thread_info()->restart_block.fn = do_no_restart_syscall;
-#define COPY(x) err |= __get_user(regs->x, &sc->x)
-
-#define COPY_SEG(seg) \
- { unsigned short tmp; \
- err |= __get_user(tmp, &sc->seg); \
- regs->seg = tmp; }
-
-#define COPY_SEG_STRICT(seg) \
- { unsigned short tmp; \
- err |= __get_user(tmp, &sc->seg); \
- regs->seg = tmp|3; }
-
-#define GET_SEG(seg) \
- { unsigned short tmp; \
- err |= __get_user(tmp, &sc->seg); \
- loadsegment(seg, tmp); }
-
GET_SEG(gs);
COPY_SEG(fs);
COPY_SEG(es);
COPY_SEG_STRICT(cs);
COPY_SEG_STRICT(ss);
- {
- unsigned int tmpflags;
-
- err |= __get_user(tmpflags, &sc->flags);
- regs->flags = (regs->flags & ~FIX_EFLAGS) |
- (tmpflags & FIX_EFLAGS);
- regs->orig_ax = -1; /* disable syscall checks */
- }
-
- {
- void __user *buf;
+ err |= __get_user(tmpflags, &sc->flags);
+ regs->flags = (regs->flags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS);
+ regs->orig_ax = -1; /* disable syscall checks */
- err |= __get_user(buf, &sc->fpstate);
- err |= restore_i387_xstate(buf);
- }
+ err |= __get_user(buf, &sc->fpstate);
+ err |= restore_i387_xstate(buf);
err |= __get_user(*pax, &sc->ax);
return err;
return 0;
}
-asmlinkage int sys_rt_sigreturn(unsigned long __unused)
+static long do_rt_sigreturn(struct pt_regs *regs)
{
- struct pt_regs *regs = (struct pt_regs *)&__unused;
struct rt_sigframe __user *frame;
unsigned long ax;
sigset_t set;
return ax;
badframe:
- force_sig(SIGSEGV, current);
+ signal_fault(regs, frame, "rt_sigreturn");
return 0;
}
+asmlinkage int sys_rt_sigreturn(unsigned long __unused)
+{
+ struct pt_regs *regs = (struct pt_regs *)&__unused;
+
+ return do_rt_sigreturn(regs);
+}
+
/*
* Set up a signal frame.
*/
}
static int
-setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
- struct pt_regs *regs)
+__setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
+ struct pt_regs *regs)
{
struct sigframe __user *frame;
void __user *restorer;
int err = 0;
- int usig;
void __user *fpstate = NULL;
frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate);
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- goto give_sigsegv;
+ return -EFAULT;
- usig = current_thread_info()->exec_domain
- && current_thread_info()->exec_domain->signal_invmap
- && sig < 32
- ? current_thread_info()->exec_domain->signal_invmap[sig]
- : sig;
+ if (__put_user(sig, &frame->sig))
+ return -EFAULT;
- err = __put_user(usig, &frame->sig);
- if (err)
- goto give_sigsegv;
-
- err = setup_sigcontext(&frame->sc, fpstate, regs, set->sig[0]);
- if (err)
- goto give_sigsegv;
+ if (setup_sigcontext(&frame->sc, fpstate, regs, set->sig[0]))
+ return -EFAULT;
if (_NSIG_WORDS > 1) {
- err = __copy_to_user(&frame->extramask, &set->sig[1],
- sizeof(frame->extramask));
- if (err)
- goto give_sigsegv;
+ if (__copy_to_user(&frame->extramask, &set->sig[1],
+ sizeof(frame->extramask)))
+ return -EFAULT;
}
if (current->mm->context.vdso)
err |= __put_user(0x80cd, (short __user *)(frame->retcode+6));
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* Set up registers for signal handler */
regs->sp = (unsigned long)frame;
regs->cs = __USER_CS;
return 0;
-
-give_sigsegv:
- force_sigsegv(sig, current);
- return -EFAULT;
}
-static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
- sigset_t *set, struct pt_regs *regs)
+static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
+ sigset_t *set, struct pt_regs *regs)
{
struct rt_sigframe __user *frame;
void __user *restorer;
int err = 0;
- int usig;
void __user *fpstate = NULL;
frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate);
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- goto give_sigsegv;
-
- usig = current_thread_info()->exec_domain
- && current_thread_info()->exec_domain->signal_invmap
- && sig < 32
- ? current_thread_info()->exec_domain->signal_invmap[sig]
- : sig;
+ return -EFAULT;
- err |= __put_user(usig, &frame->sig);
+ err |= __put_user(sig, &frame->sig);
err |= __put_user(&frame->info, &frame->pinfo);
err |= __put_user(&frame->uc, &frame->puc);
err |= copy_siginfo_to_user(&frame->info, info);
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* Create the ucontext. */
if (cpu_has_xsave)
regs, set->sig[0]);
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* Set up to return from userspace. */
restorer = VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn);
err |= __put_user(0x80cd, (short __user *)(frame->retcode+5));
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* Set up registers for signal handler */
regs->sp = (unsigned long)frame;
regs->ip = (unsigned long)ka->sa.sa_handler;
- regs->ax = (unsigned long)usig;
+ regs->ax = (unsigned long)sig;
regs->dx = (unsigned long)&frame->info;
regs->cx = (unsigned long)&frame->uc;
regs->cs = __USER_CS;
return 0;
-
-give_sigsegv:
- force_sigsegv(sig, current);
- return -EFAULT;
}
/*
* OK, we're invoking a handler:
*/
+static int signr_convert(int sig)
+{
+ struct thread_info *info = current_thread_info();
+
+ if (info->exec_domain && info->exec_domain->signal_invmap && sig < 32)
+ return info->exec_domain->signal_invmap[sig];
+ return sig;
+}
+
+#define is_ia32 1
+#define ia32_setup_frame __setup_frame
+#define ia32_setup_rt_frame __setup_rt_frame
+
+static int
+setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
+ sigset_t *set, struct pt_regs *regs)
+{
+ int usig = signr_convert(sig);
+ int ret;
+
+ /* Set up the stack frame */
+ if (is_ia32) {
+ if (ka->sa.sa_flags & SA_SIGINFO)
+ ret = ia32_setup_rt_frame(usig, ka, info, set, regs);
+ else
+ ret = ia32_setup_frame(usig, ka, set, regs);
+ } else
+ ret = __setup_rt_frame(sig, ka, info, set, regs);
+
+ if (ret) {
+ force_sigsegv(sig, current);
+ return -EFAULT;
+ }
+
+ return ret;
+}
+
static int
handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
sigset_t *oldset, struct pt_regs *regs)
int ret;
/* Are we from a system call? */
- if ((long)regs->orig_ax >= 0) {
+ if (syscall_get_nr(current, regs) >= 0) {
/* If so, check system call restarting.. */
- switch (regs->ax) {
+ switch (syscall_get_error(current, regs)) {
case -ERESTART_RESTARTBLOCK:
case -ERESTARTNOHAND:
regs->ax = -EINTR;
likely(test_and_clear_thread_flag(TIF_FORCED_TF)))
regs->flags &= ~X86_EFLAGS_TF;
- /* Set up the stack frame */
- if (ka->sa.sa_flags & SA_SIGINFO)
- ret = setup_rt_frame(sig, ka, info, oldset, regs);
- else
- ret = setup_frame(sig, ka, oldset, regs);
+ ret = setup_rt_frame(sig, ka, info, oldset, regs);
if (ret)
return ret;
+#ifdef CONFIG_X86_64
+ /*
+ * This has nothing to do with segment registers,
+ * despite the name. This magic affects uaccess.h
+ * macros' behavior. Reset it to the normal setting.
+ */
+ set_fs(USER_DS);
+#endif
+
/*
* Clear the direction flag as per the ABI for function entry.
*/
return 0;
}
+#define NR_restart_syscall __NR_restart_syscall
/*
* Note that 'init' is a special process: it doesn't get signals it doesn't
* want to handle. Thus you cannot kill init even with a SIGKILL even by
}
/* Did we come from a system call? */
- if ((long)regs->orig_ax >= 0) {
+ if (syscall_get_nr(current, regs) >= 0) {
/* Restart the system call - no handlers present */
- switch (regs->ax) {
+ switch (syscall_get_error(current, regs)) {
case -ERESTARTNOHAND:
case -ERESTARTSYS:
case -ERESTARTNOINTR:
break;
case -ERESTART_RESTARTBLOCK:
- regs->ax = __NR_restart_syscall;
+ regs->ax = NR_restart_syscall;
regs->ip -= 2;
break;
}
void
do_notify_resume(struct pt_regs *regs, void *unused, __u32 thread_info_flags)
{
+#if defined(CONFIG_X86_64) && defined(CONFIG_X86_MCE)
+ /* notify userspace of pending MCEs */
+ if (thread_info_flags & _TIF_MCE_NOTIFY)
+ mce_notify_user();
+#endif /* CONFIG_X86_64 && CONFIG_X86_MCE */
+
/* deal with pending signal delivery */
if (thread_info_flags & _TIF_SIGPENDING)
do_signal(regs);
tracehook_notify_resume(regs);
}
+#ifdef CONFIG_X86_32
clear_thread_flag(TIF_IRET);
+#endif /* CONFIG_X86_32 */
+}
+
+void signal_fault(struct pt_regs *regs, void __user *frame, char *where)
+{
+ struct task_struct *me = current;
+
+ if (show_unhandled_signals && printk_ratelimit()) {
+ printk(KERN_INFO
+ "%s[%d] bad frame in %s frame:%p ip:%lx sp:%lx orax:%lx",
+ me->comm, me->pid, where, frame,
+ regs->ip, regs->sp, regs->orig_ax);
+ print_vma_addr(" in ", regs->ip);
+ printk(KERN_CONT "\n");
+ }
+
+ force_sig(SIGSEGV, me);
}
return do_sigaltstack(uss, uoss, regs->sp);
}
+#define COPY(x) { \
+ err |= __get_user(regs->x, &sc->x); \
+}
+
+#define COPY_SEG_STRICT(seg) { \
+ unsigned short tmp; \
+ err |= __get_user(tmp, &sc->seg); \
+ regs->seg = tmp | 3; \
+}
+
/*
* Do a signal return; undo the signal stack.
*/
restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
unsigned long *pax)
{
+ void __user *buf;
+ unsigned int tmpflags;
unsigned int err = 0;
/* Always make any pending restarted system calls return -EINTR */
current_thread_info()->restart_block.fn = do_no_restart_syscall;
-#define COPY(x) (err |= __get_user(regs->x, &sc->x))
-
COPY(di); COPY(si); COPY(bp); COPY(sp); COPY(bx);
COPY(dx); COPY(cx); COPY(ip);
COPY(r8);
/* Kernel saves and restores only the CS segment register on signals,
* which is the bare minimum needed to allow mixed 32/64-bit code.
* App's signal handler can save/restore other segments if needed. */
- {
- unsigned cs;
- err |= __get_user(cs, &sc->cs);
- regs->cs = cs | 3; /* Force into user mode */
- }
+ COPY_SEG_STRICT(cs);
- {
- unsigned int tmpflags;
- err |= __get_user(tmpflags, &sc->flags);
- regs->flags = (regs->flags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS);
- regs->orig_ax = -1; /* disable syscall checks */
- }
+ err |= __get_user(tmpflags, &sc->flags);
+ regs->flags = (regs->flags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS);
+ regs->orig_ax = -1; /* disable syscall checks */
- {
- struct _fpstate __user *buf;
- err |= __get_user(buf, &sc->fpstate);
- err |= restore_i387_xstate(buf);
- }
+ err |= __get_user(buf, &sc->fpstate);
+ err |= restore_i387_xstate(buf);
err |= __get_user(*pax, &sc->ax);
return err;
}
-asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
+static long do_rt_sigreturn(struct pt_regs *regs)
{
struct rt_sigframe __user *frame;
- sigset_t set;
unsigned long ax;
+ sigset_t set;
frame = (struct rt_sigframe __user *)(regs->sp - sizeof(long));
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
return ax;
badframe:
- signal_fault(regs, frame, "sigreturn");
+ signal_fault(regs, frame, "rt_sigreturn");
return 0;
}
+asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
+{
+ return do_rt_sigreturn(regs);
+}
+
/*
* Set up a signal frame.
*/
return (void __user *)round_down(sp - size, 64);
}
-static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
- sigset_t *set, struct pt_regs *regs)
+static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
+ sigset_t *set, struct pt_regs *regs)
{
struct rt_sigframe __user *frame;
void __user *fp = NULL;
(unsigned long)fp - sizeof(struct rt_sigframe), 16) - 8;
if (save_i387_xstate(fp) < 0)
- err |= -1;
+ return -EFAULT;
} else
frame = get_stack(ka, regs, sizeof(struct rt_sigframe)) - 8;
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- goto give_sigsegv;
+ return -EFAULT;
if (ka->sa.sa_flags & SA_SIGINFO) {
- err |= copy_siginfo_to_user(&frame->info, info);
- if (err)
- goto give_sigsegv;
+ if (copy_siginfo_to_user(&frame->info, info))
+ return -EFAULT;
}
/* Create the ucontext. */
err |= __put_user(ka->sa.sa_restorer, &frame->pretcode);
} else {
/* could use a vstub here */
- goto give_sigsegv;
+ return -EFAULT;
}
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* Set up registers for signal handler */
regs->di = sig;
regs->cs = __USER_CS;
return 0;
-
-give_sigsegv:
- force_sigsegv(sig, current);
- return -EFAULT;
}
/*
* OK, we're invoking a handler
*/
+static int signr_convert(int sig)
+{
+ return sig;
+}
+
+#ifdef CONFIG_IA32_EMULATION
+#define is_ia32 test_thread_flag(TIF_IA32)
+#else
+#define is_ia32 0
+#endif
+
+static int
+setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
+ sigset_t *set, struct pt_regs *regs)
+{
+ int usig = signr_convert(sig);
+ int ret;
+
+ /* Set up the stack frame */
+ if (is_ia32) {
+ if (ka->sa.sa_flags & SA_SIGINFO)
+ ret = ia32_setup_rt_frame(usig, ka, info, set, regs);
+ else
+ ret = ia32_setup_frame(usig, ka, set, regs);
+ } else
+ ret = __setup_rt_frame(sig, ka, info, set, regs);
+
+ if (ret) {
+ force_sigsegv(sig, current);
+ return -EFAULT;
+ }
+
+ return ret;
+}
static int
handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
likely(test_and_clear_thread_flag(TIF_FORCED_TF)))
regs->flags &= ~X86_EFLAGS_TF;
-#ifdef CONFIG_IA32_EMULATION
- if (test_thread_flag(TIF_IA32)) {
- if (ka->sa.sa_flags & SA_SIGINFO)
- ret = ia32_setup_rt_frame(sig, ka, info, oldset, regs);
- else
- ret = ia32_setup_frame(sig, ka, oldset, regs);
- } else
-#endif
ret = setup_rt_frame(sig, ka, info, oldset, regs);
- if (ret == 0) {
- /*
- * This has nothing to do with segment registers,
- * despite the name. This magic affects uaccess.h
- * macros' behavior. Reset it to the normal setting.
- */
- set_fs(USER_DS);
+ if (ret)
+ return ret;
- /*
- * Clear the direction flag as per the ABI for function entry.
- */
- regs->flags &= ~X86_EFLAGS_DF;
+#ifdef CONFIG_X86_64
+ /*
+ * This has nothing to do with segment registers,
+ * despite the name. This magic affects uaccess.h
+ * macros' behavior. Reset it to the normal setting.
+ */
+ set_fs(USER_DS);
+#endif
- /*
- * Clear TF when entering the signal handler, but
- * notify any tracer that was single-stepping it.
- * The tracer may want to single-step inside the
- * handler too.
- */
- regs->flags &= ~X86_EFLAGS_TF;
+ /*
+ * Clear the direction flag as per the ABI for function entry.
+ */
+ regs->flags &= ~X86_EFLAGS_DF;
- spin_lock_irq(¤t->sighand->siglock);
- sigorsets(¤t->blocked, ¤t->blocked, &ka->sa.sa_mask);
- if (!(ka->sa.sa_flags & SA_NODEFER))
- sigaddset(¤t->blocked, sig);
- recalc_sigpending();
- spin_unlock_irq(¤t->sighand->siglock);
+ /*
+ * Clear TF when entering the signal handler, but
+ * notify any tracer that was single-stepping it.
+ * The tracer may want to single-step inside the
+ * handler too.
+ */
+ regs->flags &= ~X86_EFLAGS_TF;
- tracehook_signal_handler(sig, info, ka, regs,
- test_thread_flag(TIF_SINGLESTEP));
- }
+ spin_lock_irq(¤t->sighand->siglock);
+ sigorsets(¤t->blocked, ¤t->blocked, &ka->sa.sa_mask);
+ if (!(ka->sa.sa_flags & SA_NODEFER))
+ sigaddset(¤t->blocked, sig);
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
- return ret;
+ tracehook_signal_handler(sig, info, ka, regs,
+ test_thread_flag(TIF_SINGLESTEP));
+
+ return 0;
}
+#define NR_restart_syscall \
+ test_thread_flag(TIF_IA32) ? __NR_ia32_restart_syscall : __NR_restart_syscall
/*
* Note that 'init' is a special process: it doesn't get signals it doesn't
* want to handle. Thus you cannot kill init even with a SIGKILL even by
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
- /* Re-enable any watchpoints before delivering the
+ /*
+ * Re-enable any watchpoints before delivering the
* signal to user space. The processor register will
* have been cleared if the watchpoint triggered
* inside the kernel.
if (current->thread.debugreg7)
set_debugreg(current->thread.debugreg7, 7);
- /* Whee! Actually deliver the signal. */
+ /* Whee! Actually deliver the signal. */
if (handle_signal(signr, &info, &ka, oldset, regs) == 0) {
/*
* A signal was successfully delivered; the saved
regs->ax = regs->orig_ax;
regs->ip -= 2;
break;
+
case -ERESTART_RESTARTBLOCK:
- regs->ax = test_thread_flag(TIF_IA32) ?
- __NR_ia32_restart_syscall :
- __NR_restart_syscall;
+ regs->ax = NR_restart_syscall;
regs->ip -= 2;
break;
}
}
}
-void do_notify_resume(struct pt_regs *regs, void *unused,
- __u32 thread_info_flags)
+/*
+ * notification of userspace execution resumption
+ * - triggered by the TIF_WORK_MASK flags
+ */
+void
+do_notify_resume(struct pt_regs *regs, void *unused, __u32 thread_info_flags)
{
-#ifdef CONFIG_X86_MCE
+#if defined(CONFIG_X86_64) && defined(CONFIG_X86_MCE)
/* notify userspace of pending MCEs */
if (thread_info_flags & _TIF_MCE_NOTIFY)
mce_notify_user();
-#endif /* CONFIG_X86_MCE */
+#endif /* CONFIG_X86_64 && CONFIG_X86_MCE */
/* deal with pending signal delivery */
if (thread_info_flags & _TIF_SIGPENDING)
clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(regs);
}
+
+#ifdef CONFIG_X86_32
+ clear_thread_flag(TIF_IRET);
+#endif /* CONFIG_X86_32 */
}
void signal_fault(struct pt_regs *regs, void __user *frame, char *where)
{
struct task_struct *me = current;
+
if (show_unhandled_signals && printk_ratelimit()) {
- printk("%s[%d] bad frame in %s frame:%p ip:%lx sp:%lx orax:%lx",
- me->comm, me->pid, where, frame, regs->ip,
- regs->sp, regs->orig_ax);
+ printk(KERN_INFO
+ "%s[%d] bad frame in %s frame:%p ip:%lx sp:%lx orax:%lx",
+ me->comm, me->pid, where, frame,
+ regs->ip, regs->sp, regs->orig_ax);
print_vma_addr(" in ", regs->ip);
- printk("\n");
+ printk(KERN_CONT "\n");
}
force_sig(SIGSEGV, me);
#ifdef CONFIG_X86_32
extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs,
int error_code);
-#else
-void signal_fault(struct pt_regs *regs, void __user *frame, char *where);
#endif
+void signal_fault(struct pt_regs *regs, void __user *frame, char *where);
+
extern long syscall_trace_enter(struct pt_regs *);
extern void syscall_trace_leave(struct pt_regs *);
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