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signal/x86: Remove the pkey parameter from do_sigbus 

The function do_sigbus never sets si_code to PKUERR so it can never
return a pkey to userspace.  Therefore remove the unusable pkey
parameter from do_sigbus.

Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
hifive-unleashed-5.1
Eric W. Biederman 2018-09-18 00:16:01 +02:00
parent 768fd9c69b
commit 27274f731c
1 changed files with 3 additions and 3 deletions
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6
arch/x86/mm/fault.c
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@ -962,7 +962,7 @@ bad_area_access_error(struct pt_regs *regs, unsigned long error_code,
static void
do_sigbus(struct pt_regs *regs, unsigned long error_code, unsigned long address,
u32 *pkey, unsigned int fault)
unsigned int fault)
{
struct task_struct *tsk = current;
@ -995,7 +995,7 @@ do_sigbus(struct pt_regs *regs, unsigned long error_code, unsigned long address,
return;
}
#endif
force_sig_info_fault(SIGBUS, BUS_ADRERR, address, tsk, pkey);
force_sig_info_fault(SIGBUS, BUS_ADRERR, address, tsk, NULL);
}
static noinline void
@ -1024,7 +1024,7 @@ mm_fault_error(struct pt_regs *regs, unsigned long error_code,
} else {
if (fault & (VM_FAULT_SIGBUS|VM_FAULT_HWPOISON|
VM_FAULT_HWPOISON_LARGE))
do_sigbus(regs, error_code, address, pkey, fault);
do_sigbus(regs, error_code, address, fault);
else if (fault & VM_FAULT_SIGSEGV)
bad_area_nosemaphore(regs, error_code, address);
else