From e9a06509113619938d35181e79e92e370dfd3e00 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Tue, 5 Feb 2019 19:35:42 -0600 Subject: [PATCH] signal/arm: Remove tsk parameter from ptrace_break The ptrace_break function is always called with tsk == current. Make that obvious by removing the tsk parameter. This also makes it clear that ptrace_break calls force_sig_fault on the current task. Signed-off-by: "Eric W. Biederman" --- arch/arm/include/asm/traps.h | 2 +- arch/arm/kernel/ptrace.c | 6 +++--- arch/arm/kernel/traps.c | 2 +- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/arm/include/asm/traps.h b/arch/arm/include/asm/traps.h index a00288d7..172b08f 100644 --- a/arch/arm/include/asm/traps.h +++ b/arch/arm/include/asm/traps.h @@ -30,7 +30,7 @@ static inline int __in_irqentry_text(unsigned long ptr) extern void __init early_trap_init(void *); extern void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame); -extern void ptrace_break(struct task_struct *tsk, struct pt_regs *regs); +extern void ptrace_break(struct pt_regs *regs); extern void *vectors_page; diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c index 6fa5b63..f9cbd08 100644 --- a/arch/arm/kernel/ptrace.c +++ b/arch/arm/kernel/ptrace.c @@ -201,15 +201,15 @@ void ptrace_disable(struct task_struct *child) /* * Handle hitting a breakpoint. */ -void ptrace_break(struct task_struct *tsk, struct pt_regs *regs) +void ptrace_break(struct pt_regs *regs) { force_sig_fault(SIGTRAP, TRAP_BRKPT, - (void __user *)instruction_pointer(regs), tsk); + (void __user *)instruction_pointer(regs), current); } static int break_trap(struct pt_regs *regs, unsigned int instr) { - ptrace_break(current, regs); + ptrace_break(regs); return 0; } diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c index 33af097..288989c 100644 --- a/arch/arm/kernel/traps.c +++ b/arch/arm/kernel/traps.c @@ -606,7 +606,7 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs) case NR(breakpoint): /* SWI BREAK_POINT */ regs->ARM_pc -= thumb_mode(regs) ? 2 : 4; - ptrace_break(current, regs); + ptrace_break(regs); return regs->ARM_r0; /* -- 2.7.4