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signal/arm: Remove tsk parameter from __do_user_fault

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The __do_user_fault function is always called with tsk == current.
Make that obvious by removing the tsk parameter.

This makes it clear that __do_user_fault calls force_sig_fault
on the current task.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2019-02-05 19:39:11 -06:00
parent e9a0650911
commit fd65cc848e
1 changed files with 6 additions and 5 deletions
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11
arch/arm/mm/fault.c
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@ -157,10 +157,11 @@ __do_kernel_fault(struct mm_struct *mm, unsigned long addr, unsigned int fsr,
* User mode accesses just cause a SIGSEGV * User mode accesses just cause a SIGSEGV
*/ */
static void static void
__do_user_fault(struct task_struct *tsk, unsigned long addr, __do_user_fault(unsigned long addr, unsigned int fsr, unsigned int sig,
unsigned int fsr, unsigned int sig, int code, int code, struct pt_regs *regs)
struct pt_regs *regs)
{ {
struct task_struct *tsk = current;
if (addr > TASK_SIZE) if (addr > TASK_SIZE)
harden_branch_predictor(); harden_branch_predictor();
@ -196,7 +197,7 @@ void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
* have no context to handle this fault with. * have no context to handle this fault with.
*/ */
if (user_mode(regs)) if (user_mode(regs))
__do_user_fault(tsk, addr, fsr, SIGSEGV, SEGV_MAPERR, regs); __do_user_fault(addr, fsr, SIGSEGV, SEGV_MAPERR, regs);
else else
__do_kernel_fault(mm, addr, fsr, regs); __do_kernel_fault(mm, addr, fsr, regs);
} }
@ -392,7 +393,7 @@ retry:
SEGV_ACCERR : SEGV_MAPERR; SEGV_ACCERR : SEGV_MAPERR;
} }
__do_user_fault(tsk, addr, fsr, sig, code, regs); __do_user_fault(addr, fsr, sig, code, regs);
return 0; return 0;
no_context: no_context: