arm64: armv8_deprecated: Checking return value for memory allocation

BugLink: https://bugs.launchpad.net/bugs/1851550
[ Upstream commit 3e7c93bd04edfb0cae7dad1215544c9350254b8f ]

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>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Connor Kuehl <connor.kuehl@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/arch/arm64/kernel/armv8_deprecated.c b/arch/arm64/kernel/armv8_deprecated.c
index 2ec09debc2bb1d444f6e1c4281c10a0ffaa12588..ca158be21f833bcaeac18641777dc0709083b624 100644 (file)
--- 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) {