diff options
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas_base.c')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_base.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index 78b4fe845245..e6dfa8108301 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -3602,7 +3602,7 @@ static int megasas_init_fw(struct megasas_instance *instance) } instance->max_sectors_per_req = instance->max_num_sge * - PAGE_SIZE / 512; + SGE_BUFFER_SIZE / 512; if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) instance->max_sectors_per_req = tmp_sectors; @@ -5051,6 +5051,9 @@ static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) int i; int error = 0; compat_uptr_t ptr; + unsigned long local_raw_ptr; + u32 local_sense_off; + u32 local_sense_len; if (clear_user(ioc, sizeof(*ioc))) return -EFAULT; @@ -5068,9 +5071,15 @@ static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) * sense_len is not null, so prepare the 64bit value under * the same condition. */ - if (ioc->sense_len) { + if (get_user(local_raw_ptr, ioc->frame.raw) || + get_user(local_sense_off, &ioc->sense_off) || + get_user(local_sense_len, &ioc->sense_len)) + return -EFAULT; + + + if (local_sense_len) { void __user **sense_ioc_ptr = - (void __user **)(ioc->frame.raw + ioc->sense_off); + (void __user **)((u8*)local_raw_ptr + local_sense_off); compat_uptr_t *sense_cioc_ptr = (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off); if (get_user(ptr, sense_cioc_ptr) || |