signal: Explicitly call force_sig_fault on current

Update the calls of force_sig_fault that pass in a variable that is
set to current earlier to explicitly use current.

This is to make the next change that removes the task parameter
from force_sig_fault easier to verify.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>

arch/arc/kernel/traps.c

@@ -50,7 +50,7 @@ unhandled_exception(const char *str, struct pt_regs *regs,
 
 		tsk->thread.fault_address = (__force unsigned int)addr;
 
-		force_sig_fault(signo, si_code, addr, tsk);
+		force_sig_fault(signo, si_code, addr, current);
 
 	} else {
 		/* If not due to copy_(to|from)_user, we are doomed */

arch/arc/mm/fault.c

@@ -202,7 +202,7 @@ bad_area_nosemaphore:
 	/* User mode accesses just cause a SIGSEGV */
 	if (user_mode(regs)) {
 		tsk->thread.fault_address = address;
-		force_sig_fault(SIGSEGV, si_code, (void __user *)address, tsk);
+		force_sig_fault(SIGSEGV, si_code, (void __user *)address, current);
 		return;
 	}
 
@@ -237,5 +237,5 @@ do_sigbus:
 		goto no_context;
 
 	tsk->thread.fault_address = address;
-	force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, tsk);
+	force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, current);
 }

arch/arm/mm/fault.c

@@ -184,7 +184,7 @@ __do_user_fault(unsigned long addr, unsigned int fsr, unsigned int sig,
 	tsk->thread.address = addr;
 	tsk->thread.error_code = fsr;
 	tsk->thread.trap_no = 14;
-	force_sig_fault(sig, code, (void __user *)addr, tsk);
+	force_sig_fault(sig, code, (void __user *)addr, current);
 }
 
 void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs)

arch/mips/mm/fault.c

@@ -223,7 +223,7 @@ bad_area_nosemaphore:
 			pr_cont("\n");
 		}
 		current->thread.trap_nr = (regs->cp0_cause >> 2) & 0x1f;
-		force_sig_fault(SIGSEGV, si_code, (void __user *)address, tsk);
+		force_sig_fault(SIGSEGV, si_code, (void __user *)address, current);
 		return;
 	}
 
@@ -279,7 +279,7 @@ do_sigbus:
 #endif
 	current->thread.trap_nr = (regs->cp0_cause >> 2) & 0x1f;
 	tsk->thread.cp0_badvaddr = address;
-	force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, tsk);
+	force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, current);
 
 	return;
 #ifndef CONFIG_64BIT

arch/nds32/kernel/traps.c

@@ -263,7 +263,7 @@ static void send_sigtrap(struct pt_regs *regs, int error_code, int si_code)
 	tsk->thread.error_code = error_code;
 
 	force_sig_fault(SIGTRAP, si_code,
-			(void __user *)instruction_pointer(regs), tsk);
+			(void __user *)instruction_pointer(regs), current);
 }
 
 void do_debug_trap(unsigned long entry, unsigned long addr,

arch/nds32/mm/fault.c

@@ -271,7 +271,7 @@ bad_area_nosemaphore:
 		tsk->thread.address = addr;
 		tsk->thread.error_code = error_code;
 		tsk->thread.trap_no = entry;
-		force_sig_fault(SIGSEGV, si_code, (void __user *)addr, tsk);
+		force_sig_fault(SIGSEGV, si_code, (void __user *)addr, current);
 		return;
 	}
 
@@ -340,7 +340,7 @@ do_sigbus:
 	tsk->thread.address = addr;
 	tsk->thread.error_code = error_code;
 	tsk->thread.trap_no = entry;
-	force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)addr, tsk);
+	force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)addr, current);
 
 	return;
 

arch/openrisc/mm/fault.c

@@ -213,7 +213,7 @@ bad_area_nosemaphore:
 	/* User mode accesses just cause a SIGSEGV */
 
 	if (user_mode(regs)) {
-		force_sig_fault(SIGSEGV, si_code, (void __user *)address, tsk);
+		force_sig_fault(SIGSEGV, si_code, (void __user *)address, current);
 		return;
 	}
 
@@ -278,7 +278,7 @@ do_sigbus:
 	 * Send a sigbus, regardless of whether we were in kernel
 	 * or user mode.
 	 */
-	force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, tsk);
+	force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, current);
 
 	/* Kernel mode? Handle exceptions or die */
 	if (!user_mode(regs))

arch/riscv/kernel/traps.c

@@ -76,7 +76,7 @@ void do_trap(struct pt_regs *regs, int signo, int code, unsigned long addr)
 		show_regs(regs);
 	}
 
-	force_sig_fault(signo, code, (void __user *)addr, tsk);
+	force_sig_fault(signo, code, (void __user *)addr, current);
 }
 
 static void do_trap_error(struct pt_regs *regs, int signo, int code,

arch/sh/math-emu/math.c

@@ -560,7 +560,7 @@ static int ieee_fpe_handler(struct pt_regs *regs)
 			task_thread_info(tsk)->status |= TS_USEDFPU;
 		} else {
 			force_sig_fault(SIGFPE, FPE_FLTINV,
-					(void __user *)regs->pc, tsk);
+					(void __user *)regs->pc, current);
 		}
 
 		regs->pc = nextpc;

arch/unicore32/mm/fault.c

@@ -124,7 +124,7 @@ static void __do_user_fault(unsigned long addr, unsigned int fsr,
 	tsk->thread.address = addr;
 	tsk->thread.error_code = fsr;
 	tsk->thread.trap_no = 14;
-	force_sig_fault(sig, code, (void __user *)addr, tsk);
+	force_sig_fault(sig, code, (void __user *)addr, current);
 }
 
 void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs)

arch/x86/kernel/ptrace.c

@@ -1369,7 +1369,7 @@ void send_sigtrap(struct pt_regs *regs, int error_code, int si_code)
 
 	/* Send us the fake SIGTRAP */
 	force_sig_fault(SIGTRAP, si_code,
-			user_mode(regs) ? (void __user *)regs->ip : NULL, tsk);
+			user_mode(regs) ? (void __user *)regs->ip : NULL, current);
 }
 
 void user_single_step_report(struct pt_regs *regs)

arch/x86/kernel/traps.c

@@ -256,7 +256,7 @@ do_trap(int trapnr, int signr, char *str, struct pt_regs *regs,
 	if (!sicode)
 		force_sig(signr);
 	else
-		force_sig_fault(signr, sicode, addr, tsk);
+		force_sig_fault(signr, sicode, addr, current);
 }
 NOKPROBE_SYMBOL(do_trap);
 
@@ -856,7 +856,7 @@ static void math_error(struct pt_regs *regs, int error_code, int trapnr)
 		return;
 
 	force_sig_fault(SIGFPE, si_code,
-			(void __user *)uprobe_get_trap_addr(regs), task);
+			(void __user *)uprobe_get_trap_addr(regs), current);
 }
 
 dotraplinkage void do_coprocessor_error(struct pt_regs *regs, long error_code)

arch/x86/kernel/umip.c

@@ -277,7 +277,7 @@ static void force_sig_info_umip_fault(void __user *addr, struct pt_regs *regs)
 	tsk->thread.error_code	= X86_PF_USER | X86_PF_WRITE;
 	tsk->thread.trap_nr	= X86_TRAP_PF;
 
-	force_sig_fault(SIGSEGV, SEGV_MAPERR, addr, tsk);
+	force_sig_fault(SIGSEGV, SEGV_MAPERR, addr, current);
 
 	if (!(show_unhandled_signals && unhandled_signal(tsk, SIGSEGV)))
 		return;

arch/x86/mm/fault.c

@@ -757,7 +757,7 @@ no_context(struct pt_regs *regs, unsigned long error_code,
 
 			/* XXX: hwpoison faults will set the wrong code. */
 			force_sig_fault(signal, si_code, (void __user *)address,
-					tsk);
+					current);
 		}
 
 		/*
@@ -918,7 +918,7 @@ __bad_area_nosemaphore(struct pt_regs *regs, unsigned long error_code,
 		if (si_code == SEGV_PKUERR)
 			force_sig_pkuerr((void __user *)address, pkey);
 
-		force_sig_fault(SIGSEGV, si_code, (void __user *)address, tsk);
+		force_sig_fault(SIGSEGV, si_code, (void __user *)address, current);
 
 		return;
 	}
@@ -1044,7 +1044,7 @@ do_sigbus(struct pt_regs *regs, unsigned long error_code, unsigned long address,
 		return;
 	}
 #endif
-	force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, tsk);
+	force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, current);
 }
 
 static noinline void