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scsi: sg: add sg_remove_request in sg_common_write

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commit 849f8583e955dbe3a1806e03ecacd5e71cce0a08 upstream.

If the dxfer_len is greater than 256M then the request is invalid and we
need to call sg_remove_request in sg_common_write.

Link: https://lore.kernel.org/r/1586777361-17339-1-git-send-email-huawei.libin@huawei.com
Fixes: f930c7043663 ("scsi: sg: only check for dxfer_len greater than 256M")
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Li Bin <huawei.libin@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Li Bin 2020-04-13 19:29:21 +08:00 committed by Greg Kroah-Hartman
parent 3365079c22
commit c1ac17ab54
1 changed files with 3 additions and 1 deletions
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4
drivers/scsi/sg.c
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@ -809,8 +809,10 @@ sg_common_write(Sg_fd * sfp, Sg_request * srp,
"sg_common_write: scsi opcode=0x%02x, cmd_size=%d\n",
(int) cmnd[0], (int) hp->cmd_len));
if (hp->dxfer_len >= SZ_256M)
if (hp->dxfer_len >= SZ_256M) {
sg_remove_request(sfp, srp);
return -EINVAL;
}
k = sg_start_req(srp, cmnd);
if (k) {