From: Yunfeng Ye <yeyunfeng@huawei.com>
To: <catalin.marinas@arm.com>, <will.deacon@arm.com>,
<kstewart@linuxfoundation.org>, <gregkh@linuxfoundation.org>,
<tglx@linutronix.de>, <info@metux.net>
Cc: <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH] arm64: armv8_deprecated: Checking return value for memory allocation
Date: Sun, 29 Sep 2019 12:44:17 +0800 [thread overview]
Message-ID: <ea235720-5bbd-27b7-a9b1-34aa8a344e3a@huawei.com> (raw)
There are no return value checking when using kzalloc() and kcalloc() for
memory allocation. so add it.
Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com>
---
arch/arm64/kernel/armv8_deprecated.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm64/kernel/armv8_deprecated.c b/arch/arm64/kernel/armv8_deprecated.c
index 2ec09de..ca158be 100644
--- a/arch/arm64/kernel/armv8_deprecated.c
+++ b/arch/arm64/kernel/armv8_deprecated.c
@@ -174,6 +174,9 @@ static void __init register_insn_emulation(struct insn_emulation_ops *ops)
struct insn_emulation *insn;
insn = kzalloc(sizeof(*insn), GFP_KERNEL);
+ if (!insn)
+ return;
+
insn->ops = ops;
insn->min = INSN_UNDEF;
@@ -233,6 +236,8 @@ static void __init register_insn_emulation_sysctl(void)
insns_sysctl = kcalloc(nr_insn_emulated + 1, sizeof(*sysctl),
GFP_KERNEL);
+ if (!insns_sysctl)
+ return;
raw_spin_lock_irqsave(&insn_emulation_lock, flags);
list_for_each_entry(insn, &insn_emulation, node) {
--
2.7.4
next reply other threads:[~2019-09-29 4:45 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-29 4:44 Yunfeng Ye [this message]
2019-09-30 13:22 ` [PATCH] arm64: armv8_deprecated: Checking return value for memory allocation Will Deacon
2019-10-07 6:06 ` Yunfeng Ye
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