Re: [PATCH] dvb-core: Fix ULE decapsulation bug when less than 4 bytes of ULE SNDU is packed into the remaining bytes of a MPEG2-TS frame

2010-05-27 Thread Jarod Wilson
On Thu, May 27, 2010 at 01:02:09PM +0800, Ang Way Chuang wrote:
 ULE (Unidirectional Lightweight Encapsulation RFC 4326)
 decapsulation code has a bug that incorrectly treats ULE SNDU packed
 into the remaining 2 or 3 bytes of a MPEG2-TS frame as having
 invalid pointer field on the subsequent MPEG2-TS frame.
 
 This patch was generated and tested against the latest Linus's pre
 2.6.35-rc1 tree.
 
 Signed-off-by: Ang Way Chuang wc...@nav6.org

Looks good to me, thanks for the updated version. Good catch noting that
error needed to be reset to false after it was handled, I'd missed that.

Acked-by: Jarod Wilson ja...@redhat.com

 ---
 diff --git a/drivers/media/dvb/dvb-core/dvb_net.c 
 b/drivers/media/dvb/dvb-core/dvb_net.c
 index f6dac2b..6c3a8a0 100644
 --- a/drivers/media/dvb/dvb-core/dvb_net.c
 +++ b/drivers/media/dvb/dvb-core/dvb_net.c
 @@ -351,6 +351,7 @@ static void dvb_net_ule( struct net_device *dev, const u8 
 *buf, size_t buf_len )
   const u8 *ts, *ts_end, *from_where = NULL;
   u8 ts_remain = 0, how_much = 0, new_ts = 1;
   struct ethhdr *ethh = NULL;
 + bool error = false;
 
 #ifdef ULE_DEBUG
   /* The code inside ULE_DEBUG keeps a history of the last 100 TS cells 
 processed. */
 @@ -460,10 +461,16 @@ static void dvb_net_ule( struct net_device *dev, const 
 u8 *buf, size_t buf_len )
 
   /* Drop partly decoded SNDU, 
 reset state, resync on PUSI. */
   if (priv-ule_skb) {
 - dev_kfree_skb( 
 priv-ule_skb );
 + error = true;
 + 
 dev_kfree_skb(priv-ule_skb);
 + }
 +
 + if (error || 
 priv-ule_sndu_remain) {
   dev-stats.rx_errors++;
   
 dev-stats.rx_frame_errors++;
 + error = false;
   }
 +
   reset_ule(priv);
   priv-need_pusi = 1;
   continue;
 @@ -535,6 +542,7 @@ static void dvb_net_ule( struct net_device *dev, const u8 
 *buf, size_t buf_len )
   from_where += 2;
   }
 
 + priv-ule_sndu_remain = priv-ule_sndu_len + 2;
   /*
* State of current TS:
*   ts_remain (remaining bytes in the current TS cell)
 @@ -544,6 +552,7 @@ static void dvb_net_ule( struct net_device *dev, const u8 
 *buf, size_t buf_len )
*/
   switch (ts_remain) {
   case 1:
 + priv-ule_sndu_remain--;
   priv-ule_sndu_type = from_where[0]  
 8;
   priv-ule_sndu_type_1 = 1; /* first 
 byte of ule_type is set. */
   ts_remain -= 1; from_where += 1;
 @@ -557,6 +566,7 @@ static void dvb_net_ule( struct net_device *dev, const u8 
 *buf, size_t buf_len )
   default: /* complete ULE header is present in 
 current TS. */
   /* Extract ULE type field. */
   if (priv-ule_sndu_type_1) {
 + priv-ule_sndu_type_1 = 0;
   priv-ule_sndu_type |= 
 from_where[0];
   from_where += 1; /* points to 
 payload start. */
   ts_remain -= 1;

-- 
Jarod Wilson
ja...@redhat.com

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[PATCH] dvb-core: Fix ULE decapsulation bug when less than 4 bytes of ULE SNDU is packed into the remaining bytes of a MPEG2-TS frame

2010-05-26 Thread Ang Way Chuang
ULE (Unidirectional Lightweight Encapsulation RFC 4326) decapsulation 
code has a bug that incorrectly treats ULE SNDU packed into the 
remaining 2 or 3 bytes of a MPEG2-TS frame as having invalid pointer 
field on the subsequent MPEG2-TS frame.


This patch was generated and tested against the latest Linus's pre
2.6.35-rc1 tree. 


Signed-off-by: Ang Way Chuang wc...@nav6.org
---
diff --git a/drivers/media/dvb/dvb-core/dvb_net.c 
b/drivers/media/dvb/dvb-core/dvb_net.c
index f6dac2b..6c3a8a0 100644
--- a/drivers/media/dvb/dvb-core/dvb_net.c
+++ b/drivers/media/dvb/dvb-core/dvb_net.c
@@ -351,6 +351,7 @@ static void dvb_net_ule( struct net_device *dev, const u8 
*buf, size_t buf_len )
const u8 *ts, *ts_end, *from_where = NULL;
u8 ts_remain = 0, how_much = 0, new_ts = 1;
struct ethhdr *ethh = NULL;
+   bool error = false;

#ifdef ULE_DEBUG
/* The code inside ULE_DEBUG keeps a history of the last 100 TS cells 
processed. */
@@ -460,10 +461,16 @@ static void dvb_net_ule( struct net_device *dev, const u8 
*buf, size_t buf_len )

/* Drop partly decoded SNDU, 
reset state, resync on PUSI. */
if (priv-ule_skb) {
-   dev_kfree_skb( 
priv-ule_skb );
+   error = true;
+   
dev_kfree_skb(priv-ule_skb);
+   }
+
+   if (error || 
priv-ule_sndu_remain) {
dev-stats.rx_errors++;

dev-stats.rx_frame_errors++;
+   error = false;
}
+
reset_ule(priv);
priv-need_pusi = 1;
continue;
@@ -535,6 +542,7 @@ static void dvb_net_ule( struct net_device *dev, const u8 
*buf, size_t buf_len )
from_where += 2;
}

+   priv-ule_sndu_remain = priv-ule_sndu_len + 2;
/*
 * State of current TS:
 *   ts_remain (remaining bytes in the current TS cell)
@@ -544,6 +552,7 @@ static void dvb_net_ule( struct net_device *dev, const u8 
*buf, size_t buf_len )
 */
switch (ts_remain) {
case 1:
+   priv-ule_sndu_remain--;
priv-ule_sndu_type = from_where[0]  
8;
priv-ule_sndu_type_1 = 1; /* first 
byte of ule_type is set. */
ts_remain -= 1; from_where += 1;
@@ -557,6 +566,7 @@ static void dvb_net_ule( struct net_device *dev, const u8 
*buf, size_t buf_len )
default: /* complete ULE header is present in 
current TS. */
/* Extract ULE type field. */
if (priv-ule_sndu_type_1) {
+   priv-ule_sndu_type_1 = 0;
priv-ule_sndu_type |= 
from_where[0];
from_where += 1; /* points to 
payload start. */
ts_remain -= 1;
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[PATCH] dvb-core: Fix ULE decapsulation bug when less than 4 bytes of ULE SNDU is packed into the remaining bytes of a MPEG2-TS frame

2010-05-06 Thread Ang Way Chuang
ULE (Unidirectional Lightweight Encapsulation RFC 4326) decapsulation 
code has a bug that incorrectly treats ULE SNDU packed into the 
remaining 2 or 3 bytes of a MPEG2-TS frame as having invalid pointer 
field on the subsequent MPEG2-TS frame.


This patch was generated and tested against v2.6.34-rc6. I suspect 
that this bug was introduced in kernel version 2.6.15, but had not 
verified it.


Care has been taken not to introduce more bug by fixing this bug, but
please scrutinize the code because I always produces buggy code.

Signed-off-by: Ang Way Chuang wc...@nav6.org
---
diff --git a/drivers/media/dvb/dvb-core/dvb_net.c 
b/drivers/media/dvb/dvb-core/dvb_net.c
index 441c064..35a4afb 100644
--- a/drivers/media/dvb/dvb-core/dvb_net.c
+++ b/drivers/media/dvb/dvb-core/dvb_net.c
@@ -458,8 +458,9 @@ static void dvb_net_ule( struct net_device *dev, const u8 
*buf, size_t buf_len )
   field: %u.\n, 
priv-ts_count, *from_where);

/* Drop partly decoded SNDU, 
reset state, resync on PUSI. */
-   if (priv-ule_skb) {
-   dev_kfree_skb( 
priv-ule_skb );
+   if (priv-ule_skb || 
priv-ule_sndu_remain) {
+   if (priv-ule_skb)
+   dev_kfree_skb( 
priv-ule_skb );
dev-stats.rx_errors++;

dev-stats.rx_frame_errors++;
}
@@ -534,6 +535,7 @@ static void dvb_net_ule( struct net_device *dev, const u8 
*buf, size_t buf_len )
from_where += 2;
}

+   priv-ule_sndu_remain = priv-ule_sndu_len + 2;
/*
 * State of current TS:
 *   ts_remain (remaining bytes in the current TS cell)
@@ -543,6 +545,7 @@ static void dvb_net_ule( struct net_device *dev, const u8 
*buf, size_t buf_len )
 */
switch (ts_remain) {
case 1:
+   priv-ule_sndu_remain--;
priv-ule_sndu_type = from_where[0]  
8;
priv-ule_sndu_type_1 = 1; /* first 
byte of ule_type is set. */
ts_remain -= 1; from_where += 1;
@@ -556,6 +559,7 @@ static void dvb_net_ule( struct net_device *dev, const u8 
*buf, size_t buf_len )
default: /* complete ULE header is present in 
current TS. */
/* Extract ULE type field. */
if (priv-ule_sndu_type_1) {
+   priv-ule_sndu_type_1 = 0;
priv-ule_sndu_type |= 
from_where[0];
from_where += 1; /* points to 
payload start. */
ts_remain -= 1;




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Re: [PATCH] dvb-core: Fix ULE decapsulation bug when less than 4 bytes of ULE SNDU is packed into the remaining bytes of a MPEG2-TS frame

2009-11-24 Thread Ang Way Chuang
Okay, resending. Hope it won't do line wrapping.

ULE (Unidirectional Lightweight Encapsulation RFC 4326) decapsulation
code has a bug that incorrectly treats ULE SNDU packed into the
remaining 2 or 3 bytes of a MPEG2-TS frame as having invalid pointer
field on the subsequent MPEG2-TS frame.

This patch was generated and tested against v2.6.32-rc8. Similar patch
was applied and tested using 2.6.27 which is similar to the latest
dvb_net.c, except for network device statistical data structure. I
suspect that this bug was introduced in kernel version 2.6.15, but had
not verified it.

Care has been taken not to introduce more bug by fixing this bug, but
please scrutinize the code for I always produces buggy code.

Signed-off-by: Ang Way Chuang wc...@nav6.org
---
diff --git a/drivers/media/dvb/dvb-core/dvb_net.c
b/drivers/media/dvb/dvb-core/dvb_net.c
index 0241a7c..7e0db86 100644
--- a/drivers/media/dvb/dvb-core/dvb_net.c
+++ b/drivers/media/dvb/dvb-core/dvb_net.c
@@ -458,8 +458,9 @@ static void dvb_net_ule( struct net_device *dev,
const u8 *buf, size_t buf_len )
   field: %u.\n, 
priv-ts_count, *from_where);

/* Drop partly decoded SNDU, 
reset state, resync on PUSI. */
-   if (priv-ule_skb) {
-   dev_kfree_skb( 
priv-ule_skb );
+   if (priv-ule_skb || 
priv-ule_sndu_remain) {
+   if (priv-ule_skb)
+   dev_kfree_skb( 
priv-ule_skb );
dev-stats.rx_errors++;

dev-stats.rx_frame_errors++;
}
@@ -533,6 +534,7 @@ static void dvb_net_ule( struct net_device *dev,
const u8 *buf, size_t buf_len )
from_where += 2;
}

+   priv-ule_sndu_remain = priv-ule_sndu_len + 2;
/*
 * State of current TS:
 *   ts_remain (remaining bytes in the current TS cell)
@@ -542,6 +544,7 @@ static void dvb_net_ule( struct net_device *dev,
const u8 *buf, size_t buf_len )
 */
switch (ts_remain) {
case 1:
+   priv-ule_sndu_remain--;
priv-ule_sndu_type = from_where[0]  
8;
priv-ule_sndu_type_1 = 1; /* first 
byte of ule_type is set. */
ts_remain -= 1; from_where += 1;
@@ -555,6 +558,7 @@ static void dvb_net_ule( struct net_device *dev,
const u8 *buf, size_t buf_len )
default: /* complete ULE header is present in 
current TS. */
/* Extract ULE type field. */
if (priv-ule_sndu_type_1) {
+   priv-ule_sndu_type_1 = 0;
priv-ule_sndu_type |= 
from_where[0];
from_where += 1; /* points to 
payload start. */
ts_remain -= 1;
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Re: [PATCH] dvb-core: Fix ULE decapsulation bug when less than 4 bytes of ULE SNDU is packed into the remaining bytes of a MPEG2-TS frame

2009-11-24 Thread Ang Way Chuang
Sorry, line wrap again. I shall test and fix the problem first before
resending the patch.

On Tue, Nov 24, 2009 at 4:04 PM, Ang Way Chuang wcan...@gmail.com wrote:
 Okay, resending. Hope it won't do line wrapping.

 ULE (Unidirectional Lightweight Encapsulation RFC 4326) decapsulation
 code has a bug that incorrectly treats ULE SNDU packed into the
 remaining 2 or 3 bytes of a MPEG2-TS frame as having invalid pointer
 field on the subsequent MPEG2-TS frame.

 This patch was generated and tested against v2.6.32-rc8. Similar patch
 was applied and tested using 2.6.27 which is similar to the latest
 dvb_net.c, except for network device statistical data structure. I
 suspect that this bug was introduced in kernel version 2.6.15, but had
 not verified it.

 Care has been taken not to introduce more bug by fixing this bug, but
 please scrutinize the code for I always produces buggy code.

 Signed-off-by: Ang Way Chuang wc...@nav6.org
 ---
 diff --git a/drivers/media/dvb/dvb-core/dvb_net.c
 b/drivers/media/dvb/dvb-core/dvb_net.c
 index 0241a7c..7e0db86 100644
 --- a/drivers/media/dvb/dvb-core/dvb_net.c
 +++ b/drivers/media/dvb/dvb-core/dvb_net.c
 @@ -458,8 +458,9 @@ static void dvb_net_ule( struct net_device *dev,
 const u8 *buf, size_t buf_len )
                                                       field: %u.\n, 
 priv-ts_count, *from_where);

                                                /* Drop partly decoded SNDU, 
 reset state, resync on PUSI. */
 -                                               if (priv-ule_skb) {
 -                                                       dev_kfree_skb( 
 priv-ule_skb );
 +                                               if (priv-ule_skb || 
 priv-ule_sndu_remain) {
 +                                                       if (priv-ule_skb)
 +                                                               
 dev_kfree_skb( priv-ule_skb );
                                                        dev-stats.rx_errors++;
                                                        
 dev-stats.rx_frame_errors++;
                                                }
 @@ -533,6 +534,7 @@ static void dvb_net_ule( struct net_device *dev,
 const u8 *buf, size_t buf_len )
                                from_where += 2;
                        }

 +                       priv-ule_sndu_remain = priv-ule_sndu_len + 2;
                        /*
                         * State of current TS:
                         *   ts_remain (remaining bytes in the current TS cell)
 @@ -542,6 +544,7 @@ static void dvb_net_ule( struct net_device *dev,
 const u8 *buf, size_t buf_len )
                         */
                        switch (ts_remain) {
                                case 1:
 +                                       priv-ule_sndu_remain--;
                                        priv-ule_sndu_type = from_where[0]  
 8;
                                        priv-ule_sndu_type_1 = 1; /* first 
 byte of ule_type is set. */
                                        ts_remain -= 1; from_where += 1;
 @@ -555,6 +558,7 @@ static void dvb_net_ule( struct net_device *dev,
 const u8 *buf, size_t buf_len )
                                default: /* complete ULE header is present in 
 current TS. */
                                        /* Extract ULE type field. */
                                        if (priv-ule_sndu_type_1) {
 +                                               priv-ule_sndu_type_1 = 0;
                                                priv-ule_sndu_type |= 
 from_where[0];
                                                from_where += 1; /* points to 
 payload start. */
                                                ts_remain -= 1;

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Re: [PATCH] dvb-core: Fix ULE decapsulation bug when less than 4 bytes of ULE SNDU is packed into the remaining bytes of a MPEG2-TS frame

2009-11-24 Thread Dan Carpenter
On Mon, Nov 23, 2009 at 05:37:57PM +0800, Ang Way Chuang wrote:
 --- a/drivers/media/dvb/dvb-core/dvb_net.c
 +++ b/drivers/media/dvb/dvb-core/dvb_net.c
 @@ -458,8 +458,9 @@ static void dvb_net_ule( struct net_device *dev,
 const u8 *buf, size_t buf_len )

Your email client line broke the line starting with @@ into 2 lines so
the patch doesn't apply.

Could you resend the patch without line wrapping?

regards,
dan carpenter

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[PATCH] dvb-core: Fix ULE decapsulation bug when less than 4 bytes of ULE SNDU is packed into the remaining bytes of a MPEG2-TS frame

2009-11-23 Thread Ang Way Chuang
ULE (Unidirectional Lightweight Encapsulation RFC 4326) decapsulation
code has a bug that incorrectly treats ULE SNDU packed into the
remaining 2 or 3 bytes of a MPEG2-TS frame as having invalid pointer
field on the subsequent MPEG2-TS frame.

This patch was generated and tested against v2.6.32-rc8. Similar patch
was applied and tested using 2.6.27 which is similar to the latest
dvb_net.c, except for network device statistical data structure. I
suspect that this bug was introduced in kernel version 2.6.15, but had
not verified it.

Care has been taken not to introduce more bug by fixing this bug, but
please scrutinize the code for I always produces buggy code.

Signed-off-by: Ang Way Chuang wc...@nav6.org
---
diff --git a/drivers/media/dvb/dvb-core/dvb_net.c
b/drivers/media/dvb/dvb-core/dvb_net.c
index 0241a7c..7e0db86 100644
--- a/drivers/media/dvb/dvb-core/dvb_net.c
+++ b/drivers/media/dvb/dvb-core/dvb_net.c
@@ -458,8 +458,9 @@ static void dvb_net_ule( struct net_device *dev,
const u8 *buf, size_t buf_len )
   field: %u.\n, 
priv-ts_count, *from_where);

/* Drop partly decoded SNDU, 
reset state, resync on PUSI. */
-   if (priv-ule_skb) {
-   dev_kfree_skb( 
priv-ule_skb );
+   if (priv-ule_skb || 
priv-ule_sndu_remain) {
+   if (priv-ule_skb)
+   dev_kfree_skb( 
priv-ule_skb );
dev-stats.rx_errors++;

dev-stats.rx_frame_errors++;
}
@@ -533,6 +534,7 @@ static void dvb_net_ule( struct net_device *dev,
const u8 *buf, size_t buf_len )
from_where += 2;
}

+   priv-ule_sndu_remain = priv-ule_sndu_len + 2;
/*
 * State of current TS:
 *   ts_remain (remaining bytes in the current TS cell)
@@ -542,6 +544,7 @@ static void dvb_net_ule( struct net_device *dev,
const u8 *buf, size_t buf_len )
 */
switch (ts_remain) {
case 1:
+   priv-ule_sndu_remain--;
priv-ule_sndu_type = from_where[0]  
8;
priv-ule_sndu_type_1 = 1; /* first 
byte of ule_type is set. */
ts_remain -= 1; from_where += 1;
@@ -555,6 +558,7 @@ static void dvb_net_ule( struct net_device *dev,
const u8 *buf, size_t buf_len )
default: /* complete ULE header is present in 
current TS. */
/* Extract ULE type field. */
if (priv-ule_sndu_type_1) {
+   priv-ule_sndu_type_1 = 0;
priv-ule_sndu_type |= 
from_where[0];
from_where += 1; /* points to 
payload start. */
ts_remain -= 1;
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[PATCH] dvb-core: Fix ULE decapsulation bug when less than 4 bytes of ULE SNDU is packed into the remaining bytes of a MPEG2-TS frame

2009-11-23 Thread Ang Way Chuang
ULE (Unidirectional Lightweight Encapsulation RFC 4326) decapsulation
code has a bug that incorrectly treats ULE SNDU packed into the
remaining 2 or 3 bytes of a MPEG2-TS frame as having invalid pointer
field on the subsequent MPEG2-TS frame.

This patch was generated and tested against v2.6.32-rc8. Similar patch
was applied and tested using 2.6.27 which is similar to the latest
dvb_net.c, except for network device statistical data structure. I
suspect that this bug was introduced in kernel version 2.6.15, but had
not verified it.

Care has been taken not to introduce more bug by fixing this bug, but
please scrutinize the code for I always produces buggy code.

Signed-off-by: Ang Way Chuang wc...@nav6.org
---
diff --git a/drivers/media/dvb/dvb-core/dvb_net.c
b/drivers/media/dvb/dvb-core/dvb_net.c
index 0241a7c..7e0db86 100644
--- a/drivers/media/dvb/dvb-core/dvb_net.c
+++ b/drivers/media/dvb/dvb-core/dvb_net.c
@@ -458,8 +458,9 @@ static void dvb_net_ule( struct net_device *dev,
const u8 *buf, size_t buf_len )
                                                      field: %u.\n,
priv-ts_count, *from_where);

                                               /* Drop partly decoded
SNDU, reset state, resync on PUSI. */
-                                               if (priv-ule_skb) {
-                                                       dev_kfree_skb(
priv-ule_skb );
+                                               if (priv-ule_skb ||
priv-ule_sndu_remain) {
+                                                       if (priv-ule_skb)
+
dev_kfree_skb( priv-ule_skb );
                                                       dev-stats.rx_errors++;

dev-stats.rx_frame_errors++;
                                               }
@@ -533,6 +534,7 @@ static void dvb_net_ule( struct net_device *dev,
const u8 *buf, size_t buf_len )
                               from_where += 2;
                       }

+                       priv-ule_sndu_remain = priv-ule_sndu_len + 2;
                       /*
                        * State of current TS:
                        *   ts_remain (remaining bytes in the current TS cell)
@@ -542,6 +544,7 @@ static void dvb_net_ule( struct net_device *dev,
const u8 *buf, size_t buf_len )
                        */
                       switch (ts_remain) {
                               case 1:
+                                       priv-ule_sndu_remain--;
                                       priv-ule_sndu_type = from_where[0]  8;
                                       priv-ule_sndu_type_1 = 1; /*
first byte of ule_type is set. */
                                       ts_remain -= 1; from_where += 1;
@@ -555,6 +558,7 @@ static void dvb_net_ule( struct net_device *dev,
const u8 *buf, size_t buf_len )
                               default: /* complete ULE header is
present in current TS. */
                                       /* Extract ULE type field. */
                                       if (priv-ule_sndu_type_1) {
+                                               priv-ule_sndu_type_1 = 0;
                                               priv-ule_sndu_type |=
from_where[0];
                                               from_where += 1; /*
points to payload start. */
                                               ts_remain -= 1;
--
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[PATCH] dvb-core: Fix ULE decapsulation bug when less than 4 bytes of ULE SNDU is packed into the remaining bytes of a MPEG2-TS frame

2009-11-17 Thread Ang Way Chuang
ULE (Unidirectional Lightweight Encapsulation RFC 4326) decapsulation
code has a bug that incorrectly treats ULE SNDU packed into the remaining
2 or 3 bytes of a MPEG2-TS frame as having invalid pointer field on the
subsequent MPEG2-TS frame.

This patch was generated against v2.6.32-rc7, however it wasn't tested
using that kernel. Similar patch was applied and tested using 2.6.27 which
is similar to the latest dvb_net.c, except for network device statistical data
structure. I suspect that this bug was introduced in kernel version 2.6.15,
but had not verified it.

Care has been taken not to introduce more bug by fixing this bug, but
please scrutinize the code for I always produces buggy code.

Signed-off-by: Ang Way Chuang wc...@nav6.org
--
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[PATCH] dvb-core: Fix ULE decapsulation bug when less than 4 bytes of ULE SNDU is packed into the remaining bytes of a MPEG2-TS frame

2009-11-17 Thread Ang Way Chuang
ULE (Unidirectional Lightweight Encapsulation RFC 4326) decapsulation
code has a bug that incorrectly treats ULE SNDU packed into the remaining
2 or 3 bytes of a MPEG2-TS frame as having invalid pointer field on the
subsequent MPEG2-TS frame.

This patch was generated against v2.6.32-rc7, however it wasn't tested
using that kernel. Similar patch was applied and tested using 2.6.27 which
is similar to the latest dvb_net.c, except for network device statistical data
structure. I suspect that this bug was introduced in kernel version 2.6.15,
but had not verified it.

Care has been taken not to introduce more bug by fixing this bug, but
please scrutinize the code for I always produces buggy code.

Signed-off-by: Ang Way Chuang wc...@nav6.org
---
diff --git a/drivers/media/dvb/dvb-core/dvb_net.c
b/drivers/media/dvb/dvb-core/dvb_net.c
index 0241a7c..a521395 100644
--- a/drivers/media/dvb/dvb-core/dvb_net.c
+++ b/drivers/media/dvb/dvb-core/dvb_net.c
@@ -533,6 +533,7 @@ static void dvb_net_ule( struct net_device *dev,
const u8 *buf, size_t buf_len )
from_where += 2;
}

+   priv-ule_sndu_remain = priv-ule_sndu_len + 2;
/*
 * State of current TS:
 *   ts_remain (remaining bytes in the current TS cell)
@@ -542,6 +543,7 @@ static void dvb_net_ule( struct net_device *dev,
const u8 *buf, size_t buf_len )
 */
switch (ts_remain) {
case 1:
+   priv-ule_sndu_remain--;
priv-ule_sndu_type = from_where[0]  
8;
priv-ule_sndu_type_1 = 1; /* first 
byte of ule_type is set. */
ts_remain -= 1; from_where += 1;
@@ -555,6 +557,7 @@ static void dvb_net_ule( struct net_device *dev,
const u8 *buf, size_t buf_len )
default: /* complete ULE header is present in 
current TS. */
/* Extract ULE type field. */
if (priv-ule_sndu_type_1) {
+   priv-ule_sndu_type_1 = 0;
priv-ule_sndu_type |= 
from_where[0];
from_where += 1; /* points to 
payload start. */
ts_remain -= 1;
--
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