mirror/freebsd
1
0
Fork 0
mirror of https://git.FreeBSD.org/src.git synced 2025-01-13 14:40:22 +00:00
Code Issues Releases Activity

o Initialise each mbuf's m_len to 0 in m_getm(); mb_put_mem() depends

Browse Source 
on this.
o Update the `cur' pointer in the cluster loop in m_getm() to avoid
  incorrect truncation and leaked mbufs.

Reviewed by:	bmilekic
Approved by:	re
This commit is contained in:
Tim J. Robbins 2002-11-27 04:26:00 +00:00
parent 647501a046
commit fef82663b8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=107297
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
sys/kern/subr_mbuf.c
View File

@ -1192,6 +1192,7 @@ m_getm(struct mbuf *m, int len, int how, short type)
if (mb == NULL) if (mb == NULL)
goto failed; goto failed;
_mb_setup(mb, type); _mb_setup(mb, type);
mb->m_len = 0;
persist = (i != (num - 1) || rem > 0) ? MBP_PERSIST : 0; persist = (i != (num - 1) || rem > 0) ? MBP_PERSIST : 0;
mb->m_ext.ext_buf = (caddr_t)mb_alloc(&mb_list_clust, mb->m_ext.ext_buf = (caddr_t)mb_alloc(&mb_list_clust,
@ -1207,7 +1208,7 @@ m_getm(struct mbuf *m, int len, int how, short type)
if (cur == NULL) if (cur == NULL)
top = cur = mb; top = cur = mb;
else else
cur->m_next = mb; cur = (cur->m_next = mb);
} }
if (rem > 0) { if (rem > 0) {
if (cchnum >= 0) { if (cchnum >= 0) {
@ -1222,6 +1223,7 @@ m_getm(struct mbuf *m, int len, int how, short type)
mb = m_get(how, type); mb = m_get(how, type);
} }
if (mb != NULL) { if (mb != NULL) {
mb->m_len = 0;
if (cur == NULL) if (cur == NULL)
top = mb; top = mb;
else else