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MIPS: Loongson64: Add WARN_ON on kexec related kmalloc failed
[ Upstream commitfa706927f4
] Add WARN_ON on kexec related kmalloc failed, avoid to pass NULL pointer to following memcpy and loongson_kexec_prepare. Fixes:6ce48897ce
("MIPS: Loongson64: Add kexec/kdump support") Signed-off-by: Liao Chang <liaochang1@huawei.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 10 additions and 0 deletions
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@ -16,6 +16,7 @@
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#include <asm/bootinfo.h>
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#include <asm/idle.h>
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#include <asm/reboot.h>
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#include <asm/bug.h>
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#include <loongson.h>
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#include <boot_param.h>
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@ -159,8 +160,17 @@ static int __init mips_reboot_setup(void)
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#ifdef CONFIG_KEXEC
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kexec_argv = kmalloc(KEXEC_ARGV_SIZE, GFP_KERNEL);
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if (WARN_ON(!kexec_argv))
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return -ENOMEM;
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kdump_argv = kmalloc(KEXEC_ARGV_SIZE, GFP_KERNEL);
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if (WARN_ON(!kdump_argv))
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return -ENOMEM;
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kexec_envp = kmalloc(KEXEC_ENVP_SIZE, GFP_KERNEL);
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if (WARN_ON(!kexec_envp))
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return -ENOMEM;
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fw_arg1 = KEXEC_ARGV_ADDR;
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memcpy(kexec_envp, (void *)fw_arg2, KEXEC_ENVP_SIZE);
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