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| author | Julia Lawall <julia@diku.dk> | 2009-09-11 18:22:27 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-09-15 12:02:34 -0700 |
| commit | 2bb6a12a88aeac9bab4ed0cf0da1edc03f5eb686 (patch) | |
| tree | 7d81f9c9d2208af2df80c7fe2d5241c757d40a3f | |
| parent | a2279ae5b58edb7cbe2196d08572fcf59f292354 (diff) | |
| download | lwn-2bb6a12a88aeac9bab4ed0cf0da1edc03f5eb686.tar.gz lwn-2bb6a12a88aeac9bab4ed0cf0da1edc03f5eb686.zip | |
Staging: dream: introduce missing kfree
Error handling code following a kmalloc or kzalloc should free the
allocated data.
The semantic match that finds the problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r exists@
local idexpression x;
statement S;
expression E;
identifier f,f1,l;
position p1,p2;
expression *ptr != NULL;
@@
x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
<... when != x
when != if (...) { <+...x...+> }
(
x->f1 = E
|
(x->f1 == NULL || ...)
|
f(...,x->f1,...)
)
...>
(
return \(0\|<+...x...+>\|ptr\);
|
return@p2 ...;
)
@script:python@
p1 << r.p1;
p2 << r.p2;
@@
print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
| -rw-r--r-- | drivers/staging/dream/camera/msm_v4l2.c | 8 | ||||
| -rw-r--r-- | drivers/staging/dream/camera/msm_vfe8x_proc.c | 16 |
2 files changed, 18 insertions, 6 deletions
diff --git a/drivers/staging/dream/camera/msm_v4l2.c b/drivers/staging/dream/camera/msm_v4l2.c index 46a6eb1cf53f..6a7d46cf11eb 100644 --- a/drivers/staging/dream/camera/msm_v4l2.c +++ b/drivers/staging/dream/camera/msm_v4l2.c @@ -521,13 +521,17 @@ static int msm_v4l2_s_fmt_cap(struct file *f, ctrlcmd->value = pfmt; ctrlcmd->timeout_ms = 10000; - if (pfmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + if (pfmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { + kfree(ctrlcmd); return -1; + } #if 0 /* FIXEME */ - if (pfmt->fmt.pix.pixelformat != V4L2_PIX_FMT_YVU420) + if (pfmt->fmt.pix.pixelformat != V4L2_PIX_FMT_YVU420) { + kfree(ctrlcmd); return -EINVAL; + } #endif /* Ok, but check other params, too. */ diff --git a/drivers/staging/dream/camera/msm_vfe8x_proc.c b/drivers/staging/dream/camera/msm_vfe8x_proc.c index 5436f7120018..10aef0e59bab 100644 --- a/drivers/staging/dream/camera/msm_vfe8x_proc.c +++ b/drivers/staging/dream/camera/msm_vfe8x_proc.c @@ -967,8 +967,10 @@ vfe_send_af_stats_msg(uint32_t afBufAddress) /* fill message with right content. */ /* @todo This is causing issues, need further investigate */ /* spin_lock_irqsave(&ctrl->state_lock, flags); */ - if (ctrl->vstate != VFE_STATE_ACTIVE) + if (ctrl->vstate != VFE_STATE_ACTIVE) { + kfree(msg); goto af_stats_done; + } msg->_d = VFE_MSG_ID_STATS_AUTOFOCUS; msg->_u.msgStatsAf.afBuffer = afBufAddress; @@ -1053,8 +1055,10 @@ static void vfe_send_awb_stats_msg(uint32_t awbBufAddress) /* fill message with right content. */ /* @todo This is causing issues, need further investigate */ /* spin_lock_irqsave(&ctrl->state_lock, flags); */ - if (ctrl->vstate != VFE_STATE_ACTIVE) + if (ctrl->vstate != VFE_STATE_ACTIVE) { + kfree(msg); goto awb_stats_done; + } msg->_d = VFE_MSG_ID_STATS_WB_EXP; msg->_u.msgStatsWbExp.awbBuffer = awbBufAddress; @@ -1483,8 +1487,10 @@ static void vfe_send_output2_msg( /* fill message with right content. */ /* @todo This is causing issues, need further investigate */ /* spin_lock_irqsave(&ctrl->state_lock, flags); */ - if (ctrl->vstate != VFE_STATE_ACTIVE) + if (ctrl->vstate != VFE_STATE_ACTIVE) { + kfree(msg); goto output2_msg_done; + } msg->_d = VFE_MSG_ID_OUTPUT2; @@ -1518,8 +1524,10 @@ static void vfe_send_output1_msg( /* @todo This is causing issues, need further investigate */ /* spin_lock_irqsave(&ctrl->state_lock, flags); */ - if (ctrl->vstate != VFE_STATE_ACTIVE) + if (ctrl->vstate != VFE_STATE_ACTIVE) { + kfree(msg); goto output1_msg_done; + } msg->_d = VFE_MSG_ID_OUTPUT1; memmove(&(msg->_u), |