| Message ID | 20240606165939.12950-4-quic_ekangupt@quicinc.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | Add missing features to FastRPC driver | expand |
On Thu, Jun 06, 2024 at 10:29:23PM +0530, Ekansh Gupta wrote: > User is passing capability ioctl structure(argp) to get DSP > capabilities. This argp is copied to a local structure to get domain > and attribute_id information. After getting the capability, only > capability value is getting copied to user argp which will not be > useful if the use is trying to get the capability by checking the > capability member of fastrpc_ioctl_capability structure. Add changes > to copy the complete capability structure so that user can get the > capability value from the expected member of the structure. Nit: s/Add changes to copy/Copy/ Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> > > Fixes: 6c16fd8bdd40 ("misc: fastrpc: Add support to get DSP capabilities") > Cc: stable <stable@kernel.org> > Signed-off-by: Ekansh Gupta <quic_ekangupt@quicinc.com> > --- > drivers/misc/fastrpc.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) >
On 06/06/2024 18:59, Ekansh Gupta wrote: > User is passing capability ioctl structure(argp) to get DSP > capabilities. This argp is copied to a local structure to get domain > and attribute_id information. After getting the capability, only > capability value is getting copied to user argp which will not be > useful if the use is trying to get the capability by checking the > capability member of fastrpc_ioctl_capability structure. Add changes > to copy the complete capability structure so that user can get the > capability value from the expected member of the structure. > > Fixes: 6c16fd8bdd40 ("misc: fastrpc: Add support to get DSP capabilities") > Cc: stable <stable@kernel.org> > Signed-off-by: Ekansh Gupta <quic_ekangupt@quicinc.com> Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org> > --- > drivers/misc/fastrpc.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c > index abf7df7c0c85..f64781c3012f 100644 > --- a/drivers/misc/fastrpc.c > +++ b/drivers/misc/fastrpc.c > @@ -1784,7 +1784,7 @@ static int fastrpc_get_dsp_info(struct fastrpc_user *fl, char __user *argp) > if (err) > return err; > > - if (copy_to_user(argp, &cap.capability, sizeof(cap.capability))) > + if (copy_to_user(argp, &cap, sizeof(cap))) > return -EFAULT; > > return 0;
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c index abf7df7c0c85..f64781c3012f 100644 --- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -1784,7 +1784,7 @@ static int fastrpc_get_dsp_info(struct fastrpc_user *fl, char __user *argp) if (err) return err; - if (copy_to_user(argp, &cap.capability, sizeof(cap.capability))) + if (copy_to_user(argp, &cap, sizeof(cap))) return -EFAULT; return 0;
User is passing capability ioctl structure(argp) to get DSP capabilities. This argp is copied to a local structure to get domain and attribute_id information. After getting the capability, only capability value is getting copied to user argp which will not be useful if the use is trying to get the capability by checking the capability member of fastrpc_ioctl_capability structure. Add changes to copy the complete capability structure so that user can get the capability value from the expected member of the structure. Fixes: 6c16fd8bdd40 ("misc: fastrpc: Add support to get DSP capabilities") Cc: stable <stable@kernel.org> Signed-off-by: Ekansh Gupta <quic_ekangupt@quicinc.com> --- drivers/misc/fastrpc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)