net/ethernet: update all iob information in the iob_update_pktlen

HedongGao · xiaoxiang781216 · commit a5a29bdbbb65 · 2025-12-29T14:40:26.000+08:00
Update io_len to 0 when pktlen is 0. otherwise, io_pktlen and io_len will be inconsistent, cause free check failure.

Signed-off-by: gaohedong &lt;gaohedong@xiaomi.com&gt;
diff --git a/mm/iob/iob_update_pktlen.c b/mm/iob/iob_update_pktlen.c
@@ -138,7 +138,7 @@ int iob_update_pktlen(FAR struct iob_s *iob, unsigned int pktlen,
   /* Update size of each iob */
 
   next = iob;
-  while (next != NULL && pktlen > 0)
+  while (next != NULL && pktlen >= 0)
     {
       if (pktlen + next->io_offset > IOB_BUFSIZE(next))
         {

Original file line number	Diff line number	Diff line change
`@@ -138,7 +138,7 @@ int iob_update_pktlen(FAR struct iob_s *iob, unsigned int pktlen,`
`138`	`138`	`/* Update size of each iob */`
`139`	`139`
`140`	`140`	`next = iob;`
`141`		`- while (next != NULL && pktlen > 0)`
	`141`	`+ while (next != NULL && pktlen >= 0)`
`142`	`142`	`{`
`143`	`143`	`if (pktlen + next->io_offset > IOB_BUFSIZE(next))`
`144`	`144`	`{`