From: "Eric W. Biederman" <ebiederm@xmission.com>
To: linux-kernel@vger.kernel.org
Cc: linux-arch@vger.kernel.org, linux-snps-arc@lists.infradead.org,
Vineet Gupta <vgupta@synopsys.com>,
"Eric W. Biederman" <ebiederm@xmission.com>
Subject: [REVIEW][PATCH 2/2] signal/arc: Use force_sig_fault where appropriate
Date: Mon, 24 Sep 2018 16:49:10 +0200 [thread overview]
Message-ID: <20180924144910.14902-2-ebiederm@xmission.com> (raw)
In-Reply-To: <874lef2bqn.fsf@xmission.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
---
arch/arc/mm/fault.c | 20 +++++---------------
1 file changed, 5 insertions(+), 15 deletions(-)
diff --git a/arch/arc/mm/fault.c b/arch/arc/mm/fault.c
index db6913094be3..c9da6102eb4f 100644
--- a/arch/arc/mm/fault.c
+++ b/arch/arc/mm/fault.c
@@ -66,14 +66,12 @@ void do_page_fault(unsigned long address, struct pt_regs *regs)
struct vm_area_struct *vma = NULL;
struct task_struct *tsk = current;
struct mm_struct *mm = tsk->mm;
- siginfo_t info;
+ int si_code;
int ret;
vm_fault_t fault;
int write = regs->ecr_cause & ECR_C_PROTV_STORE; /* ST/EX */
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
- clear_siginfo(&info);
-
/*
* We fault-in kernel-space virtual memory on-demand. The
* 'reference' page table is init_mm.pgd.
@@ -91,7 +89,7 @@ void do_page_fault(unsigned long address, struct pt_regs *regs)
return;
}
- info.si_code = SEGV_MAPERR;
+ si_code = SEGV_MAPERR;
/*
* If we're in an interrupt or have no user
@@ -119,7 +117,7 @@ void do_page_fault(unsigned long address, struct pt_regs *regs)
* we can handle it..
*/
good_area:
- info.si_code = SEGV_ACCERR;
+ si_code = SEGV_ACCERR;
/* Handle protection violation, execute on heap or stack */
@@ -199,11 +197,7 @@ void do_page_fault(unsigned long address, struct pt_regs *regs)
/* User mode accesses just cause a SIGSEGV */
if (user_mode(regs)) {
tsk->thread.fault_address = address;
- info.si_signo = SIGSEGV;
- info.si_errno = 0;
- /* info.si_code has been set above */
- info.si_addr = (void __user *)address;
- force_sig_info(SIGSEGV, &info, tsk);
+ force_sig_fault(SIGSEGV, si_code, (void __user *)address, tsk);
return;
}
@@ -238,9 +232,5 @@ void do_page_fault(unsigned long address, struct pt_regs *regs)
goto no_context;
tsk->thread.fault_address = address;
- info.si_signo = SIGBUS;
- info.si_errno = 0;
- info.si_code = BUS_ADRERR;
- info.si_addr = (void __user *)address;
- force_sig_info(SIGBUS, &info, tsk);
+ force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, tsk);
}
--
2.17.1
next prev parent reply other threads:[~2018-09-24 14:50 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-24 14:47 [REVIEW][PATCH 0/2] signal/arc: siginfo cleanups Eric W. Biederman
2018-09-24 14:49 ` [REVIEW][PATCH 1/2] signal/arc: Push siginfo generation into unhandled_exception Eric W. Biederman
2018-09-24 17:37 ` Vineet Gupta
2018-09-24 14:49 ` Eric W. Biederman [this message]
2018-09-24 17:37 ` [REVIEW][PATCH 2/2] signal/arc: Use force_sig_fault where appropriate Vineet Gupta
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