ng_tty: copy to the correct mbuf

memcpy should copy to the current mbuf, otherwise we're copying to the
first mbuf in the chain over and over.

Reported by:	kevans
Reviewed by:	glebius
MFC after:	3 days
Differential Revision:	https://reviews.freebsd.org/D52713

This commit is contained in:

Ahmad Khalifa

2025-09-25 19:54:28 +03:00

parent 904ac13eed

commit e05521121f

1 changed files with 1 additions and 1 deletions

									
										sys/netgraph/ng_tty.c
									
		+1
		-1
	
												View File
												
				@@ -427,7 +427,7 @@ ngt_rint_bypass(struct tty *tp, const void *buf, size_t len)

					for (mb = m; mb != NULL; mb = mb->m_next) {

						length = min(M_TRAILINGSPACE(mb), len - total);

						memcpy(mtod(m, char *), (const char *)buf + total, length);

						memcpy(mtod(mb, char *), (const char *)buf + total, length);

						mb->m_len = length;

						total += length;

						m->m_pkthdr.len += length;