From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Stephen Biggs" Date: Thu, 10 Feb 2005 21:34:29 +0000 Subject: [KJ] [PATCH][7/26] drivers/isdn/i4l/* - compile warning cleanup Message-Id: <420BEF85.28194.58794A@localhost> MIME-Version: 1 Content-Type: multipart/mixed; boundary="===============37645539254876503==" List-Id: To: kernel-janitors@vger.kernel.org --===============37645539254876503== Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Content-description: Mail message body Description: compile warning cleanup - handle copy_to/from_user error returns, initialize return value to reasonable number in case used before initialized. Signed-off-by: Stephen Biggs diff -Nurdp -X dontdiff-osdl linux-2.6.11-rc3-mm-original/drivers/isdn/i4l/isdn_common.c linux-2.6.11-rc3-mm/drivers/isdn/i4l/isdn_common.c --- linux-2.6.11-rc3-mm-original/drivers/isdn/i4l/isdn_common.c 2005-02-03 03:55:36.000000000 +0200 +++ linux-2.6.11-rc3-mm/drivers/isdn/i4l/isdn_common.c 2005-02-07 18:30:54.000000000 +0200 @@ -1842,8 +1842,12 @@ isdn_writebuf_stub(int drvidx, int chan, if (!skb) return 0; skb_reserve(skb, hl); - copy_from_user(skb_put(skb, len), buf, len); + if(copy_from_user(skb_put(skb, len), buf, len)) { + ret = -EFAULT; + goto after_writebuf_skb; + } ret = dev->drv[drvidx]->interface->writebuf_skb(drvidx, chan, 1, skb); +after_writebuf_skb: if (ret <= 0) dev_kfree_skb(skb); if (ret > 0) diff -Nurdp -X dontdiff-osdl linux-2.6.11-rc3-mm-original/drivers/isdn/i4l/isdn_ppp.c linux-2.6.11-rc3-mm/drivers/isdn/i4l/isdn_ppp.c --- linux-2.6.11-rc3-mm-original/drivers/isdn/i4l/isdn_ppp.c 2005-02-03 03:56:11.000000000 +0200 +++ linux-2.6.11-rc3-mm/drivers/isdn/i4l/isdn_ppp.c 2005-02-07 20:50:34.000000000 +0200 @@ -789,7 +789,8 @@ isdn_ppp_read(int min, struct file *file is->first = b; spin_unlock_irqrestore(&is->buflock, flags); - copy_to_user(buf, save_buf, count); + if(copy_to_user(buf, save_buf, count)) + count = -EFAULT; /* make sure we free the save_buf */ kfree(save_buf); return count; diff -Nurdp -X dontdiff-osdl linux-2.6.11-rc3-mm-original/drivers/isdn/i4l/isdn_v110.c linux-2.6.11-rc3-mm/drivers/isdn/i4l/isdn_v110.c --- linux-2.6.11-rc3-mm-original/drivers/isdn/i4l/isdn_v110.c 2005-02-03 03:57:04.000000000 +0200 +++ linux-2.6.11-rc3-mm/drivers/isdn/i4l/isdn_v110.c 2005-02-07 15:41:54.000000000 +0200 @@ -520,7 +520,7 @@ isdn_v110_stat_callback(int idx, isdn_ct { isdn_v110_stream *v = NULL; int i; - int ret; + int ret = 0; if (idx < 0) return 0; --===============37645539254876503== Content-Type: text/plain; charset="iso-8859-1" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline _______________________________________________ Kernel-janitors mailing list Kernel-janitors@lists.osdl.org http://lists.osdl.org/mailman/listinfo/kernel-janitors --===============37645539254876503==--