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authorAhmad Khalifa <vexeduxr@FreeBSD.org>2025-09-25 16:54:28 +0000
committerAhmad Khalifa <vexeduxr@FreeBSD.org>2025-09-25 16:55:28 +0000
commite05521121f05a1b1e0d7c7b5fbe79f83fc303cd0 (patch)
treef12be4744a5e46bda5737d8a0d4144cf29ca560f
parent904ac13eed05fa6153393d692f8ecd45b5dabe11 (diff)
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
-rw-r--r--sys/netgraph/ng_tty.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/netgraph/ng_tty.c b/sys/netgraph/ng_tty.c
index c7d8a1b64eac..0e3230a66f66 100644
--- a/sys/netgraph/ng_tty.c
+++ b/sys/netgraph/ng_tty.c
@@ -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;