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signal: Remove the task parameter from force_sig_fault

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As synchronous exceptions really only make sense against the current
task (otherwise how are you synchronous) remove the task parameter
from from force_sig_fault to make it explicit that is what is going
on.

The two known exceptions that deliver a synchronous exception to a
stopped ptraced task have already been changed to
force_sig_fault_to_task.

The callers have been changed with the following emacs regular expression
(with obvious variations on the architectures that take more arguments)
to avoid typos:

force_sig_fault[(]\([^,]+\)[,]\([^,]+\)[,]\([^,]+\)[,]\W+current[)]
->
force_sig_fault(\1,\2,\3)

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman
2019-05-23 11:04:24 -05:00
parent 91ca180dbd
commit 2e1661d267
67 changed files with 137 additions and 151 deletions
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2
arch/powerpc/kernel/process.c
View File

@@ -643,7 +643,7 @@ void do_break (struct pt_regs *regs, unsigned long address,
hw_breakpoint_disable();
/* Deliver the signal to userspace */
force_sig_fault(SIGTRAP, TRAP_HWBKPT, (void __user *)address, current);
force_sig_fault(SIGTRAP, TRAP_HWBKPT, (void __user *)address);
}
#endif /* CONFIG_PPC_ADV_DEBUG_REGS */

4
arch/powerpc/kernel/traps.c
View File

@@ -301,7 +301,7 @@ NOKPROBE_SYMBOL(die);
void user_single_step_report(struct pt_regs *regs)
{
force_sig_fault(SIGTRAP, TRAP_TRACE, (void __user *)regs->nip, current);
force_sig_fault(SIGTRAP, TRAP_TRACE, (void __user *)regs->nip);
}
static void show_signal_msg(int signr, struct pt_regs *regs, int code,
@@ -367,7 +367,7 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
if (!exception_common(signr, regs, code, addr))
return;
force_sig_fault(signr, code, (void __user *)addr, current);
force_sig_fault(signr, code, (void __user *)addr);
}
/*