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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2017-06-30 11:01:06 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-07-12 17:06:51 -0400 |
| commit | eeac8cda2c957e156093933b860eec09e488fe15 (patch) | |
| tree | ea0ae90c30da15876cbd6c8d1a127e0461b7e758 /drivers/scsi/cxlflash | |
| parent | c57ec8fb7c025322f25a077afc94e0ef18cc3d89 (diff) | |
| download | op-kernel-dev-eeac8cda2c957e156093933b860eec09e488fe15.zip op-kernel-dev-eeac8cda2c957e156093933b860eec09e488fe15.tar.gz | |
scsi: cxlflash: return -EFAULT if copy_from_user() fails
The copy_from/to_user() functions return the number of bytes remaining
to be copied but we had intended to return -EFAULT here.
Fixes: bc88ac47d5cb ("scsi: cxlflash: Support AFU debug")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/cxlflash')
| -rw-r--r-- | drivers/scsi/cxlflash/main.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c index 077f62e..6a4367c 100644 --- a/drivers/scsi/cxlflash/main.c +++ b/drivers/scsi/cxlflash/main.c @@ -3401,9 +3401,10 @@ static int cxlflash_afu_debug(struct cxlflash_cfg *cfg, if (is_write) { req_flags |= SISL_REQ_FLAGS_HOST_WRITE; - rc = copy_from_user(kbuf, ubuf, ulen); - if (unlikely(rc)) + if (copy_from_user(kbuf, ubuf, ulen)) { + rc = -EFAULT; goto out; + } } } @@ -3431,8 +3432,10 @@ static int cxlflash_afu_debug(struct cxlflash_cfg *cfg, goto out; } - if (ulen && !is_write) - rc = copy_to_user(ubuf, kbuf, ulen); + if (ulen && !is_write) { + if (copy_to_user(ubuf, kbuf, ulen)) + rc = -EFAULT; + } out: kfree(buf); dev_dbg(dev, "%s: returning rc=%d\n", __func__, rc); |
