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| author |   Liao Chang <liaochang1@huawei.com> | 2022-11-03 09:18:15 +0800 |
|---|---|---|
| committer |   Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2022-11-11 15:45:06 +0100 |
| commit | fa706927f4722a2df723b2a28d139b1904a3e7fa (patch) | |
| tree | 1245de0123de26e0258806532a03a0765d040426 | |
| parent | MIPS: fix duplicate definitions for exported symbols (diff) | |
| download | linux-dev-fa706927f4722a2df723b2a28d139b1904a3e7fa.tar.xz linux-dev-fa706927f4722a2df723b2a28d139b1904a3e7fa.zip | |
MIPS: Loongson64: Add WARN_ON on kexec related kmalloc failed
Add WARN_ON on kexec related kmalloc failed, avoid to pass NULL pointer
to following memcpy and loongson_kexec_prepare.
Fixes: 6ce48897ce47 ("MIPS: Loongson64: Add kexec/kdump support")
Signed-off-by: Liao Chang <liaochang1@huawei.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
| -rw-r--r-- | arch/mips/loongson64/reset.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/mips/loongson64/reset.c b/arch/mips/loongson64/reset.c index 758d5d26aaaa..e420800043b0 100644 --- a/arch/mips/loongson64/reset.c +++ b/arch/mips/loongson64/reset.c @@ -16,6 +16,7 @@ #include <asm/bootinfo.h> #include <asm/idle.h> #include <asm/reboot.h> +#include <asm/bug.h> #include <loongson.h> #include <boot_param.h> @@ -159,8 +160,17 @@ static int __init mips_reboot_setup(void) #ifdef CONFIG_KEXEC kexec_argv = kmalloc(KEXEC_ARGV_SIZE, GFP_KERNEL); + if (WARN_ON(!kexec_argv)) + return -ENOMEM; + kdump_argv = kmalloc(KEXEC_ARGV_SIZE, GFP_KERNEL); + if (WARN_ON(!kdump_argv)) + return -ENOMEM; + kexec_envp = kmalloc(KEXEC_ENVP_SIZE, GFP_KERNEL); + if (WARN_ON(!kexec_envp)) + return -ENOMEM; + fw_arg1 = KEXEC_ARGV_ADDR; memcpy(kexec_envp, (void *)fw_arg2, KEXEC_ENVP_SIZE); |