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Subject[PATCH RESEND] arm64: fault: avoid send SIGBUS two times
Date
If APEI handling the memory error is failed, the do_mem_abort()
and do_sea() will all deliver SIGBUS. In fact, sending one time
can be enough, so correct it.

Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com>
---
arch/arm64/mm/fault.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index fcf2ede3..9e3f7ca 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -570,7 +570,6 @@ static int do_sea(unsigned long addr, unsigned int esr, struct pt_regs *regs)
{
struct siginfo info;
const struct fault_info *inf;
- int ret = 0;

inf = esr_to_fault_info(esr);
pr_err("Synchronous External Abort: %s (0x%08x) at 0x%016lx\n",
@@ -585,7 +584,7 @@ static int do_sea(unsigned long addr, unsigned int esr, struct pt_regs *regs)
if (interrupts_enabled(regs))
nmi_enter();

- ret = ghes_notify_sea();
+ ghes_notify_sea();

if (interrupts_enabled(regs))
nmi_exit();
@@ -600,7 +599,7 @@ static int do_sea(unsigned long addr, unsigned int esr, struct pt_regs *regs)
info.si_addr = (void __user *)addr;
arm64_notify_die("", regs, &info, esr);

- return ret;
+ return 0;
}

static const struct fault_info fault_info[] = {
--
2.10.1
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