Messages in this thread | | | Subject | Re: [PATCH] scsi:sg: add sg_remove_request in sg_write | From | Douglas Gilbert <> | Date | Tue, 14 Apr 2020 14:44:51 -0400 |
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On 2020-04-13 10:13 p.m., Wu Bo wrote: > From: Wu Bo <wubo40@huawei.com> > > If the __copy_from_user function return failed, > it should call sg_remove_request in sg_write.
This is a fix.
Acked-by: Douglas Gilbert <dgilbert@interlog.com> > Signed-off-by: Wu Bo <wubo40@huawei.com> > --- > drivers/scsi/sg.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c > index 4e6af59..ff3f532 100644 > --- a/drivers/scsi/sg.c > +++ b/drivers/scsi/sg.c > @@ -685,8 +685,10 @@ static int get_sg_io_pack_id(int *pack_id, void __user > *buf, size_t count) > hp->flags = input_size; /* structure abuse ... */ > hp->pack_id = old_hdr.pack_id; > hp->usr_ptr = NULL; > - if (copy_from_user(cmnd, buf, cmd_size)) > + if (copy_from_user(cmnd, buf, cmd_size)) { > + sg_remove_request(sfp, srp); > return -EFAULT; > + } > /* > * SG_DXFER_TO_FROM_DEV is functionally equivalent to SG_DXFER_FROM_DEV, > * but is is possible that the app intended SG_DXFER_TO_DEV, because there > -- > 1.8.3.1 >
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