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| author | Dongjiu Geng <gengdongjiu@huawei.com> | 2017-12-13 18:36:47 +0800 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2017-12-13 09:58:13 +0000 |
| commit | faa75e147b583417273902552c61cf3250a44308 (patch) | |
| tree | 7301fe6882973bd87f4ea1c4ab9dfab95188bed3 /arch | |
| parent | 0e17cada2a5b4dc847082e1db0e3f84599ffd436 (diff) | |
| download | linux-0-day-faa75e147b583417273902552c61cf3250a44308.tar.gz linux-0-day-faa75e147b583417273902552c61cf3250a44308.tar.xz | |
arm64: fault: avoid send SIGBUS two times
do_sea() calls arm64_notify_die() which will always signal
user-space. It also returns whether APEI claimed the external
abort as a RAS notification. If it returns failure do_mem_abort()
will signal user-space too.
do_mem_abort() wants to know if we handled the error, we always
call arm64_notify_die() so can always return success.
Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com>
Reviewed-by: James Morse <james.morse@arm.com>
Reviewed-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/mm/fault.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c index 22168cd0dde73..9b7f89df49dbf 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -574,7 +574,6 @@ 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", @@ -589,7 +588,7 @@ 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(); @@ -604,7 +603,7 @@ 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[] = { |