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OpenCloudOS-Kernel
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Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6 

* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6:
  sh: Handle -ERESTART_RESTARTBLOCK for restartable syscalls.
  sh: oops_enter()/oops_exit() in die().
  sh: Fix restartable syscall arg5 clobbering.
This commit is contained in:
Linus Torvalds 2007-06-19 08:07:34 -07:00
parent 710675d360 3aeb884b4e
commit 3197dac24f
2 changed files with 9 additions and 3 deletions
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9
arch/sh/kernel/signal.c
View File

@ -268,7 +268,7 @@ asmlinkage int sys_rt_sigreturn(unsigned long r4, unsigned long r5,
badframe:
force_sig(SIGSEGV, current);
return 0;
}
}
/*
* Set up a signal frame.
@ -481,7 +481,7 @@ give_sigsegv:
static int
handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *oldset, struct pt_regs *regs)
sigset_t *oldset, struct pt_regs *regs, unsigned int save_r0)
{
int ret;
@ -489,6 +489,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
if (regs->tra >= 0) {
/* If so, check system call restarting.. */
switch (regs->regs[0]) {
case -ERESTART_RESTARTBLOCK:
case -ERESTARTNOHAND:
regs->regs[0] = -EINTR;
break;
@ -500,6 +501,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
}
/* fallthrough */
case -ERESTARTNOINTR:
regs->regs[0] = save_r0;
regs->pc -= instruction_size(
ctrl_inw(regs->pc - 4));
break;
@ -583,7 +585,8 @@ static void do_signal(struct pt_regs *regs, unsigned int save_r0)
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Whee! Actually deliver the signal. */
if (handle_signal(signr, &ka, &info, oldset, regs) == 0) {
if (handle_signal(signr, &ka, &info, oldset,
regs, save_r0) == 0) {
/* a signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply

3
arch/sh/kernel/traps.c
View File

@ -83,6 +83,8 @@ void die(const char * str, struct pt_regs * regs, long err)
{
static int die_counter;
oops_enter();
console_verbose();
spin_lock_irq(&die_lock);
bust_spinlocks(1);
@ -112,6 +114,7 @@ void die(const char * str, struct pt_regs * regs, long err)
if (panic_on_oops)
panic("Fatal exception");
oops_exit();
do_exit(SIGSEGV);
}