The send_sigtrap function is always called with task == current. Make
that explicit by removing the task parameter.
This also makes it clear that the x86 send_sigtrap passes current
into force_sig_fault.
Signed-off-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
---
arch/x86/include/asm/ptrace.h | 3 +--
arch/x86/kernel/ptrace.c | 7 ++++---
arch/x86/kernel/traps.c | 2 +-
3 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/x86/include/asm/ptrace.h b/arch/x86/include/asm/ptrace.h
index 8a7fc0cca2d1..28779bf7951f 100644
--- a/arch/x86/include/asm/ptrace.h
+++ b/arch/x86/include/asm/ptrace.h
@@ -102,8 +102,7 @@ extern unsigned long profile_pc(struct pt_regs *regs);
extern unsigned long
convert_ip_to_linear(struct task_struct *child, struct pt_regs *regs);
-extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs,
- int error_code, int si_code);
+extern void send_sigtrap(struct pt_regs *regs, int error_code, int si_code);
static inline unsigned long regs_return_value(struct pt_regs *regs)
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 4b8ee05dd6ad..00148141f138 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -1360,9 +1360,10 @@ const struct user_regset_view *task_user_regset_view(struct task_struct *task)
#endif
}
-void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs,
- int error_code, int si_code)
+void send_sigtrap(struct pt_regs *regs, int error_code, int si_code)
{
+ struct task_struct *tsk = current;
+
tsk->thread.trap_nr = X86_TRAP_DB;
tsk->thread.error_code = error_code;
@@ -1373,5 +1374,5 @@ void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs,
void user_single_step_report(struct pt_regs *regs)
{
- send_sigtrap(current, regs, 0, TRAP_BRKPT);
+ send_sigtrap(regs, 0, TRAP_BRKPT);
}
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index e54f0cad4b2e..30a9b843ef04 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -805,7 +805,7 @@ dotraplinkage void do_debug(struct pt_regs *regs, long error_code)
}
si_code = get_si_code(tsk->thread.debugreg6);
if (tsk->thread.debugreg6 & (DR_STEP | DR_TRAP_BITS) || user_icebp)
- send_sigtrap(tsk, regs, error_code, si_code);
+ send_sigtrap(regs, error_code, si_code);
cond_local_irq_disable(regs);
debug_stack_usage_dec();
--
2.21.0
