Thanks for reviewing.
The 2 struct members were not marked as __user, which this patch does
here. This was causing warnings with copy from/to user (see commit
description). This patch also propagates the annotation to the couple
of functions that are using those members.
On Sat, May 30, 2015 at 7:27 PM, Greg Kroah-Hartman
<gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> On Mon, May 25, 2015 at 09:40:04PM -0700, David Decotigny wrote:
>> This fixes the following sparse warnings:
>> drivers/staging/lustre/lnet/lnet/api-ni.c:1926:38: warning: incorrect type in argument 1 (different address spaces)
>> drivers/staging/lustre/lnet/lnet/api-ni.c:1926:38: expected void [noderef] <asn:1>*to
>> drivers/staging/lustre/lnet/lnet/api-ni.c:1926:38: got struct lnet_process_id_t [usertype] *
>> drivers/staging/lustre/lnet/selftest/conctl.c:833:37: warning: incorrect type in argument 2 (different address spaces)
>> drivers/staging/lustre/lnet/selftest/conctl.c:833:37: expected void const [noderef] <asn:1>*from
>> drivers/staging/lustre/lnet/selftest/conctl.c:833:37: got char *ioc_pbuf1
>> drivers/staging/lustre/lnet/selftest/conctl.c:918:30: warning: incorrect type in argument 1 (different address spaces)
>> drivers/staging/lustre/lnet/selftest/conctl.c:918:30: expected void [noderef] <asn:1>*to
>> drivers/staging/lustre/lnet/selftest/conctl.c:918:30: got char *ioc_pbuf2
>>
>> Signed-off-by: David Decotigny <ddecotig@xxxxxxxxx>
>> ---
>> drivers/staging/lustre/include/linux/libcfs/libcfs_ioctl.h | 4 ++--
>> drivers/staging/lustre/include/linux/lnet/lib-lnet.h | 2 +-
>> drivers/staging/lustre/lnet/lnet/api-ni.c | 5 +++--
>> 3 files changed, 6 insertions(+), 5 deletions(-)
>>
>> diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs_ioctl.h b/drivers/staging/lustre/include/linux/libcfs/libcfs_ioctl.h
>> index 3ee3878..aa687b7 100644
>> --- a/drivers/staging/lustre/include/linux/libcfs/libcfs_ioctl.h
>> +++ b/drivers/staging/lustre/include/linux/libcfs/libcfs_ioctl.h
>> @@ -61,9 +61,9 @@ struct libcfs_ioctl_data {
>> char *ioc_inlbuf2;
>>
>> __u32 ioc_plen1; /* buffers in userspace */
>> - char *ioc_pbuf1;
>> + char __user *ioc_pbuf1;
>> __u32 ioc_plen2; /* buffers in userspace */
>> - char *ioc_pbuf2;
>> + char __user *ioc_pbuf2;
>>
>> char ioc_bulk[0];
>> };
>> diff --git a/drivers/staging/lustre/include/linux/lnet/lib-lnet.h b/drivers/staging/lustre/include/linux/lnet/lib-lnet.h
>> index 0038d29..7f06b9f7 100644
>> --- a/drivers/staging/lustre/include/linux/lnet/lib-lnet.h
>> +++ b/drivers/staging/lustre/include/linux/lnet/lib-lnet.h
>> @@ -858,7 +858,7 @@ void lnet_swap_pinginfo(lnet_ping_info_t *info);
>> int lnet_ping_target_init(void);
>> void lnet_ping_target_fini(void);
>> int lnet_ping(lnet_process_id_t id, int timeout_ms,
>> - lnet_process_id_t *ids, int n_ids);
>> + lnet_process_id_t __user *ids, int n_ids);
>>
>> int lnet_parse_ip2nets(char **networksp, char *ip2nets);
>> int lnet_parse_routes(char *route_str, int *im_a_router);
>> diff --git a/drivers/staging/lustre/lnet/lnet/api-ni.c b/drivers/staging/lustre/lnet/lnet/api-ni.c
>> index 4a14e51..1a0cd57 100644
>> --- a/drivers/staging/lustre/lnet/lnet/api-ni.c
>> +++ b/drivers/staging/lustre/lnet/lnet/api-ni.c
>> @@ -1470,7 +1470,7 @@ LNetCtl(unsigned int cmd, void *arg)
>> id.nid = data->ioc_nid;
>> id.pid = data->ioc_u32[0];
>> rc = lnet_ping(id, data->ioc_u32[1], /* timeout */
>> - (lnet_process_id_t *)data->ioc_pbuf1,
>> + (lnet_process_id_t __user *)data->ioc_pbuf1,
>
> Why is this marking needed? If so, something must be wrong as isn't
> this variable already __user now due to the other part of this patch?
>
> thanks,
>
> greg k-h
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