diff options
| -rw-r--r-- | sys/kern/uipc_sockbuf.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/kern/uipc_sockbuf.c b/sys/kern/uipc_sockbuf.c index b730c69..41f5987 100644 --- a/sys/kern/uipc_sockbuf.c +++ b/sys/kern/uipc_sockbuf.c @@ -937,11 +937,13 @@ sbsndptr(struct sockbuf *sb, u_int off, u_int len, u_int *moff) /* Advance by len to be as close as possible for the next transmit. */ for (off = off - sb->sb_sndptroff + len - 1; - off > 0 && off >= m->m_len; + off > 0 && m != NULL && off >= m->m_len; m = m->m_next) { sb->sb_sndptroff += m->m_len; off -= m->m_len; } + if (off > 0 && m == NULL) + panic("%s: sockbuf %p and mbuf %p clashing", __func__, sb, ret); sb->sb_sndptr = m; return (ret); |
