Hi, I am a security researcher, my name is Dongyang Zhan. I found a potential bug.
I hope you can help me to confirm it. Thank you. In Linux 4.10.17, smp_init_package_map() in /arch/x86/kernel/smpboot.c does not handle the failure of memory allocation, which may cause a null pointer dereference bug. Source code link: https://elixir.bootlin.com/linux/v4.10.17/source/arch/x86/kernel/smpboot.c#L326 Source code and comments: physical_to_logical_pkg = kmalloc(size, GFP_KERNEL); memset(physical_to_logical_pkg, 0xff, size); // does not check if kmalloc fails
