drivers/virt/acrn/hsm.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-)
The vm_param and cpu_regs need to be freed via kfree()
before return -EINVAL error.
Fixes: 9c5137aedd11 ("virt: acrn: Introduce VM management interfaces")
Fixes: 2ad2aaee1bc9 ("virt: acrn: Introduce an ioctl to set vCPU registers state")
Signed-off-by: Xiaolong Huang <butterflyhuangxx@gmail.com>
Signed-off-by: Fei Li <fei1.li@intel.com>
---
drivers/virt/acrn/hsm.c | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
diff --git a/drivers/virt/acrn/hsm.c b/drivers/virt/acrn/hsm.c
index 5419794fccf1..423ea888d79a 100644
--- a/drivers/virt/acrn/hsm.c
+++ b/drivers/virt/acrn/hsm.c
@@ -136,8 +136,10 @@ static long acrn_dev_ioctl(struct file *filp, unsigned int cmd,
if (IS_ERR(vm_param))
return PTR_ERR(vm_param);
- if ((vm_param->reserved0 | vm_param->reserved1) != 0)
+ if ((vm_param->reserved0 | vm_param->reserved1) != 0) {
+ kfree(vm_param);
return -EINVAL;
+ }
vm = acrn_vm_create(vm, vm_param);
if (!vm) {
@@ -182,21 +184,29 @@ static long acrn_dev_ioctl(struct file *filp, unsigned int cmd,
return PTR_ERR(cpu_regs);
for (i = 0; i < ARRAY_SIZE(cpu_regs->reserved); i++)
- if (cpu_regs->reserved[i])
+ if (cpu_regs->reserved[i]) {
+ kfree(cpu_regs);
return -EINVAL;
+ }
for (i = 0; i < ARRAY_SIZE(cpu_regs->vcpu_regs.reserved_32); i++)
- if (cpu_regs->vcpu_regs.reserved_32[i])
+ if (cpu_regs->vcpu_regs.reserved_32[i]) {
+ kfree(cpu_regs);
return -EINVAL;
+ }
for (i = 0; i < ARRAY_SIZE(cpu_regs->vcpu_regs.reserved_64); i++)
- if (cpu_regs->vcpu_regs.reserved_64[i])
+ if (cpu_regs->vcpu_regs.reserved_64[i]) {
+ kfree(cpu_regs);
return -EINVAL;
+ }
for (i = 0; i < ARRAY_SIZE(cpu_regs->vcpu_regs.gdt.reserved); i++)
if (cpu_regs->vcpu_regs.gdt.reserved[i] |
- cpu_regs->vcpu_regs.idt.reserved[i])
+ cpu_regs->vcpu_regs.idt.reserved[i]) {
+ kfree(cpu_regs);
return -EINVAL;
+ }
ret = hcall_set_vcpu_regs(vm->vmid, virt_to_phys(cpu_regs));
if (ret < 0)
base-commit: 5859a2b1991101d6b978f3feb5325dad39421f29
--
2.25.1On Tue, Mar 08, 2022 at 05:20:47PM +0800, Xiaolong Huang wrote:
> The vm_param and cpu_regs need to be freed via kfree()
> before return -EINVAL error.
>
> Fixes: 9c5137aedd11 ("virt: acrn: Introduce VM management interfaces")
> Fixes: 2ad2aaee1bc9 ("virt: acrn: Introduce an ioctl to set vCPU registers state")
> Signed-off-by: Xiaolong Huang <butterflyhuangxx@gmail.com>
> Signed-off-by: Fei Li <fei1.li@intel.com>
> ---
> drivers/virt/acrn/hsm.c | 20 +++++++++++++++-----
> 1 file changed, 15 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/virt/acrn/hsm.c b/drivers/virt/acrn/hsm.c
> index 5419794fccf1..423ea888d79a 100644
> --- a/drivers/virt/acrn/hsm.c
> +++ b/drivers/virt/acrn/hsm.c
> @@ -136,8 +136,10 @@ static long acrn_dev_ioctl(struct file *filp, unsigned int cmd,
> if (IS_ERR(vm_param))
> return PTR_ERR(vm_param);
>
> - if ((vm_param->reserved0 | vm_param->reserved1) != 0)
> + if ((vm_param->reserved0 | vm_param->reserved1) != 0) {
> + kfree(vm_param);
> return -EINVAL;
> + }
>
> vm = acrn_vm_create(vm, vm_param);
> if (!vm) {
> @@ -182,21 +184,29 @@ static long acrn_dev_ioctl(struct file *filp, unsigned int cmd,
> return PTR_ERR(cpu_regs);
>
> for (i = 0; i < ARRAY_SIZE(cpu_regs->reserved); i++)
> - if (cpu_regs->reserved[i])
> + if (cpu_regs->reserved[i]) {
> + kfree(cpu_regs);
> return -EINVAL;
> + }
>
> for (i = 0; i < ARRAY_SIZE(cpu_regs->vcpu_regs.reserved_32); i++)
> - if (cpu_regs->vcpu_regs.reserved_32[i])
> + if (cpu_regs->vcpu_regs.reserved_32[i]) {
> + kfree(cpu_regs);
> return -EINVAL;
> + }
>
> for (i = 0; i < ARRAY_SIZE(cpu_regs->vcpu_regs.reserved_64); i++)
> - if (cpu_regs->vcpu_regs.reserved_64[i])
> + if (cpu_regs->vcpu_regs.reserved_64[i]) {
> + kfree(cpu_regs);
> return -EINVAL;
> + }
>
> for (i = 0; i < ARRAY_SIZE(cpu_regs->vcpu_regs.gdt.reserved); i++)
> if (cpu_regs->vcpu_regs.gdt.reserved[i] |
> - cpu_regs->vcpu_regs.idt.reserved[i])
> + cpu_regs->vcpu_regs.idt.reserved[i]) {
> + kfree(cpu_regs);
> return -EINVAL;
> + }
>
> ret = hcall_set_vcpu_regs(vm->vmid, virt_to_phys(cpu_regs));
> if (ret < 0)
>
> base-commit: 5859a2b1991101d6b978f3feb5325dad39421f29
> --
> 2.25.1
>
How did you test this?
No, not yet. I just code audit.
Regards,
butt3rflyh4ck.
On Tue, Mar 8, 2022 at 5:56 PM Greg KH <gregkh@linuxfoundation.org> wrote:
>
> On Tue, Mar 08, 2022 at 05:20:47PM +0800, Xiaolong Huang wrote:
> > The vm_param and cpu_regs need to be freed via kfree()
> > before return -EINVAL error.
> >
> > Fixes: 9c5137aedd11 ("virt: acrn: Introduce VM management interfaces")
> > Fixes: 2ad2aaee1bc9 ("virt: acrn: Introduce an ioctl to set vCPU registers state")
> > Signed-off-by: Xiaolong Huang <butterflyhuangxx@gmail.com>
> > Signed-off-by: Fei Li <fei1.li@intel.com>
> > ---
> > drivers/virt/acrn/hsm.c | 20 +++++++++++++++-----
> > 1 file changed, 15 insertions(+), 5 deletions(-)
> >
> > diff --git a/drivers/virt/acrn/hsm.c b/drivers/virt/acrn/hsm.c
> > index 5419794fccf1..423ea888d79a 100644
> > --- a/drivers/virt/acrn/hsm.c
> > +++ b/drivers/virt/acrn/hsm.c
> > @@ -136,8 +136,10 @@ static long acrn_dev_ioctl(struct file *filp, unsigned int cmd,
> > if (IS_ERR(vm_param))
> > return PTR_ERR(vm_param);
> >
> > - if ((vm_param->reserved0 | vm_param->reserved1) != 0)
> > + if ((vm_param->reserved0 | vm_param->reserved1) != 0) {
> > + kfree(vm_param);
> > return -EINVAL;
> > + }
> >
> > vm = acrn_vm_create(vm, vm_param);
> > if (!vm) {
> > @@ -182,21 +184,29 @@ static long acrn_dev_ioctl(struct file *filp, unsigned int cmd,
> > return PTR_ERR(cpu_regs);
> >
> > for (i = 0; i < ARRAY_SIZE(cpu_regs->reserved); i++)
> > - if (cpu_regs->reserved[i])
> > + if (cpu_regs->reserved[i]) {
> > + kfree(cpu_regs);
> > return -EINVAL;
> > + }
> >
> > for (i = 0; i < ARRAY_SIZE(cpu_regs->vcpu_regs.reserved_32); i++)
> > - if (cpu_regs->vcpu_regs.reserved_32[i])
> > + if (cpu_regs->vcpu_regs.reserved_32[i]) {
> > + kfree(cpu_regs);
> > return -EINVAL;
> > + }
> >
> > for (i = 0; i < ARRAY_SIZE(cpu_regs->vcpu_regs.reserved_64); i++)
> > - if (cpu_regs->vcpu_regs.reserved_64[i])
> > + if (cpu_regs->vcpu_regs.reserved_64[i]) {
> > + kfree(cpu_regs);
> > return -EINVAL;
> > + }
> >
> > for (i = 0; i < ARRAY_SIZE(cpu_regs->vcpu_regs.gdt.reserved); i++)
> > if (cpu_regs->vcpu_regs.gdt.reserved[i] |
> > - cpu_regs->vcpu_regs.idt.reserved[i])
> > + cpu_regs->vcpu_regs.idt.reserved[i]) {
> > + kfree(cpu_regs);
> > return -EINVAL;
> > + }
> >
> > ret = hcall_set_vcpu_regs(vm->vmid, virt_to_phys(cpu_regs));
> > if (ret < 0)
> >
> > base-commit: 5859a2b1991101d6b978f3feb5325dad39421f29
> > --
> > 2.25.1
> >
>
> How did you test this?
--
Active Defense Lab of Venustech
On Tue, Mar 08, 2022 at 06:14:31PM +0800, butt3rflyh4ck wrote: > No, not yet. I just code audit. Please test things like this so that we know it actually is correct. thanks, greg k-h
Hi, Greg, could you tell me how to test (like this)? Thank you, butt3rflyh4ck. On Tue, Mar 8, 2022 at 6:16 PM Greg KH <gregkh@linuxfoundation.org> wrote: > > On Tue, Mar 08, 2022 at 06:14:31PM +0800, butt3rflyh4ck wrote: > > No, not yet. I just code audit. > > Please test things like this so that we know it actually is correct. > > thanks, > > greg k-h -- Active Defense Lab of Venustech
On Tue, Mar 15, 2022 at 10:44:09AM +0800, butt3rflyh4ck wrote: > Hi, Greg, could you tell me how to test (like this)? I have no context at all what "like this" is sorry. greg k-h
Ok, thanks. By the way, I want to explain, Firstly there is just some parameter that should be freed before func returns the -EINVAL error in the patch. I think it was correct, no need to test it. And secondly the commitor Li Fei1 also reviewed the patch code. finally I am sorry that no arcn hso hardware to test it. Regards, butt3rflyh4ck. On Tue, Mar 15, 2022 at 2:49 PM Greg KH <gregkh@linuxfoundation.org> wrote: > > On Tue, Mar 15, 2022 at 10:44:09AM +0800, butt3rflyh4ck wrote: > > Hi, Greg, could you tell me how to test (like this)? > > I have no context at all what "like this" is sorry. > > greg k-h -- Active Defense Lab of Venustech
On Tue, Mar 15, 2022 at 03:36:11PM +0800, butt3rflyh4ck wrote: > Ok, thanks. By the way, I want to explain, Firstly there is just some > parameter that should be freed before func returns the -EINVAL error > in the patch. What patch? I see nothing here :( > I think it was correct, no need to test it. And secondly the commitor > Li Fei1 also reviewed the patch code. finally I am sorry that no arcn > hso hardware to test it. I still have no context at all. Please properly quote your email threads so that we can all understand and respond properly. thanks, greg k-h
On Tue, Mar 8, 2022 at 5:56 PM Greg KH <gregkh@linuxfoundation.org> wrote:
>
> On Tue, Mar 08, 2022 at 05:20:47PM +0800, Xiaolong Huang wrote:
> > The vm_param and cpu_regs need to be freed via kfree()
> > before return -EINVAL error.
> >
> > Fixes: 9c5137aedd11 ("virt: acrn: Introduce VM management interfaces")
> > Fixes: 2ad2aaee1bc9 ("virt: acrn: Introduce an ioctl to set vCPU registers state")
> > Signed-off-by: Xiaolong Huang <butterflyhuangxx@gmail.com>
> > Signed-off-by: Fei Li <fei1.li@intel.com>
> > ---
> > drivers/virt/acrn/hsm.c | 20 +++++++++++++++-----
> > 1 file changed, 15 insertions(+), 5 deletions(-)
> >
> > diff --git a/drivers/virt/acrn/hsm.c b/drivers/virt/acrn/hsm.c
> > index 5419794fccf1..423ea888d79a 100644
> > --- a/drivers/virt/acrn/hsm.c
> > +++ b/drivers/virt/acrn/hsm.c
> > @@ -136,8 +136,10 @@ static long acrn_dev_ioctl(struct file *filp, unsigned int cmd,
> > if (IS_ERR(vm_param))
> > return PTR_ERR(vm_param);
> >
> > - if ((vm_param->reserved0 | vm_param->reserved1) != 0)
> > + if ((vm_param->reserved0 | vm_param->reserved1) != 0) {
> > + kfree(vm_param);
> > return -EINVAL;
> > + }
> >
> > vm = acrn_vm_create(vm, vm_param);
> > if (!vm) {
> > @@ -182,21 +184,29 @@ static long acrn_dev_ioctl(struct file *filp, unsigned int cmd,
> > return PTR_ERR(cpu_regs);
> >
> > for (i = 0; i < ARRAY_SIZE(cpu_regs->reserved); i++)
> > - if (cpu_regs->reserved[i])
> > + if (cpu_regs->reserved[i]) {
> > + kfree(cpu_regs);
> > return -EINVAL;
> > + }
> >
> > for (i = 0; i < ARRAY_SIZE(cpu_regs->vcpu_regs.reserved_32); i++)
> > - if (cpu_regs->vcpu_regs.reserved_32[i])
> > + if (cpu_regs->vcpu_regs.reserved_32[i]) {
> > + kfree(cpu_regs);
> > return -EINVAL;
> > + }
> >
> > for (i = 0; i < ARRAY_SIZE(cpu_regs->vcpu_regs.reserved_64); i++)
> > - if (cpu_regs->vcpu_regs.reserved_64[i])
> > + if (cpu_regs->vcpu_regs.reserved_64[i]) {
> > + kfree(cpu_regs);
> > return -EINVAL;
> > + }
> >
> > for (i = 0; i < ARRAY_SIZE(cpu_regs->vcpu_regs.gdt.reserved); i++)
> > if (cpu_regs->vcpu_regs.gdt.reserved[i] |
> > - cpu_regs->vcpu_regs.idt.reserved[i])
> > + cpu_regs->vcpu_regs.idt.reserved[i]) {
> > + kfree(cpu_regs);
> > return -EINVAL;
> > + }
> >
> > ret = hcall_set_vcpu_regs(vm->vmid, virt_to_phys(cpu_regs));
> > if (ret < 0)
> >
> > base-commit: 5859a2b1991101d6b978f3feb5325dad39421f29
> > --
> > 2.25.1
> >
>
> How did you test this?
Ok, thanks. Firstly there is just some
parameter that should be freed before func returns the -EINVAL error
in the patch. I think it was correct, no need to test it. And
secondly the commitor
Li Fei1 also reviewed the patch code. finally I am sorry that no arcn
hso hardware to test it.
Regards,
butt3rflyh4ck.
--
Active Defense Lab of Venustech
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