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powerpc/xics: Check return value of kasprintf in icp_native_map_one_cpu
[ Upstream commit 45b1ba7e5d
]
kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful
by checking the pointer validity.
Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231122030651.3818-1-chentao@kylinos.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 2 additions and 0 deletions
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@ -236,6 +236,8 @@ static int __init icp_native_map_one_cpu(int hw_id, unsigned long addr,
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rname = kasprintf(GFP_KERNEL, "CPU %d [0x%x] Interrupt Presentation",
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cpu, hw_id);
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if (!rname)
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return -ENOMEM;
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if (!request_mem_region(addr, size, rname)) {
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pr_warn("icp_native: Could not reserve ICP MMIO for CPU %d, interrupt server #0x%x\n",
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cpu, hw_id);
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