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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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12
arch/mips/kernel/traps.c
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@@ -705,7 +705,7 @@ asmlinkage void do_ov(struct pt_regs *regs)
prev_state = exception_enter();
die_if_kernel("Integer overflow", regs);
force_sig_fault(SIGFPE, FPE_INTOVF, (void __user *)regs->cp0_epc, current);
force_sig_fault(SIGFPE, FPE_INTOVF, (void __user *)regs->cp0_epc);
exception_exit(prev_state);
}
@@ -750,7 +750,7 @@ int process_fpemu_return(int sig, void __user *fault_addr, unsigned long fcr31)
return 1;
case SIGBUS:
force_sig_fault(SIGBUS, BUS_ADRERR, fault_addr, current);
force_sig_fault(SIGBUS, BUS_ADRERR, fault_addr);
return 1;
case SIGSEGV:
@@ -761,7 +761,7 @@ int process_fpemu_return(int sig, void __user *fault_addr, unsigned long fcr31)
else
si_code = SEGV_MAPERR;
up_read(&current->mm->mmap_sem);
force_sig_fault(SIGSEGV, si_code, fault_addr, current);
force_sig_fault(SIGSEGV, si_code, fault_addr);
return 1;
default:
@@ -943,7 +943,7 @@ void do_trap_or_bp(struct pt_regs *regs, unsigned int code, int si_code,
die_if_kernel(b, regs);
force_sig_fault(SIGFPE,
code == BRK_DIVZERO ? FPE_INTDIV : FPE_INTOVF,
(void __user *) regs->cp0_epc, current);
(void __user *) regs->cp0_epc);
break;
case BRK_BUG:
die_if_kernel("Kernel bug detected", regs);
@@ -968,7 +968,7 @@ void do_trap_or_bp(struct pt_regs *regs, unsigned int code, int si_code,
scnprintf(b, sizeof(b), "%s instruction in kernel code", str);
die_if_kernel(b, regs);
if (si_code) {
force_sig_fault(SIGTRAP, si_code, NULL, current);
force_sig_fault(SIGTRAP, si_code, NULL);
} else {
force_sig(SIGTRAP);
}
@@ -1521,7 +1521,7 @@ asmlinkage void do_watch(struct pt_regs *regs)
if (test_tsk_thread_flag(current, TIF_LOAD_WATCH)) {
mips_read_watch_registers();
local_irq_enable();
force_sig_fault(SIGTRAP, TRAP_HWBKPT, NULL, current);
force_sig_fault(SIGTRAP, TRAP_HWBKPT, NULL);
} else {
mips_clear_watch_registers();
local_irq_enable();