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Commit 479a0cff authored by Kunwu Chan's avatar Kunwu Chan Committed by Greg Kroah-Hartman
Browse files

powerpc/xics: Check return value of kasprintf in icp_native_map_one_cpu 



[ Upstream commit 45b1ba7e5d1f6881050d558baf9bc74a2ae13930 ]

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: default avatarKunwu Chan <chentao@kylinos.cn>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231122030651.3818-1-chentao@kylinos.cn


Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 6b344eb8

arch/powerpc/sysdev/xics/icp-native.c

+2 −0
Original line number Diff line number Diff line
@@ -240,6 +240,8 @@ static int __init icp_native_map_one_cpu(int hw_id, unsigned long addr, 
	rname = kasprintf(GFP_KERNEL, "CPU %d [0x%x] Interrupt Presentation",

			  cpu, hw_id);



	if (!rname)

		return -ENOMEM;

	if (!request_mem_region(addr, size, rname)) {

		pr_warn("icp_native: Could not reserve ICP MMIO for CPU %d, interrupt server #0x%x\n",

			cpu, hw_id);