Re: [patch] kvm: fix GFP_KERNEL allocation in atomic section in kvm_dev_ioctl_create_vcpu()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Ingo Molnar wrote:
Subject: [patch] kvm: fix GFP_KERNEL allocation in atomic section in kvm_dev_ioctl_create_vcpu()
From: Ingo Molnar <[email protected]>

fix a GFP_KERNEL allocation in atomic section bug: kvm_dev_ioctl_create_vcpu() called kvm_mmu_init(), which calls alloc_pages(), while holding the vcpu. The fix is to set up the MMU state earlier, it does not require a loaded CPU state.

Yes it does. It calls nonpaging_init_context() which calls vmx_set_cr3() which promptly trashes address space of the VM that previously ran on that vcpu (or, if there were none, logs a vmwrite error).

--
error compiling committee.c: too many arguments to function

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux