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signal/um: Remove task parameter from send_sigtrap 

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 uml send_sigtrap passes current
into force_sig_fault.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2019-02-05 18:35:08 -06:00
parent 28d42ea14e
commit 9d63175981
1 changed files with 4 additions and 4 deletions
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8
arch/um/kernel/ptrace.c
View File

@ -112,13 +112,13 @@ long arch_ptrace(struct task_struct *child, long request,
return ret;
}
static void send_sigtrap(struct task_struct *tsk, struct uml_pt_regs *regs,
int error_code)
static void send_sigtrap(struct uml_pt_regs *regs, int error_code)
{
/* Send us the fake SIGTRAP */
force_sig_fault(SIGTRAP, TRAP_BRKPT,
/* User-mode eip? */
UPT_IS_USER(regs) ? (void __user *) UPT_IP(regs) : NULL, tsk);
UPT_IS_USER(regs) ? (void __user *) UPT_IP(regs) : NULL,
current);
}
/*
@ -147,7 +147,7 @@ void syscall_trace_leave(struct pt_regs *regs)
/* Fake a debug trap */
if (ptraced & PT_DTRACE)
send_sigtrap(current, &regs->regs, 0);
send_sigtrap(&regs->regs, 0);
if (!test_thread_flag(TIF_SYSCALL_TRACE))
return;