From 89d01748b2354e210b5d4ea47bc25a42a1b42c82 Mon Sep 17 00:00:00 2001
From: Eric Dumazet <edumazet@google.com>
Date: Fri, 25 Sep 2020 06:38:08 -0700
Subject: team: set dev->needed_headroom in team_setup_by_port()
Some devices set needed_headroom. If we ignore it, we might
end up crashing in various skb_push() for example in ipgre_header()
since some layers assume enough headroom has been reserved.
Fixes: 1d76efe1577b ("team: add support for non-ethernet devices")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/team/team.c | 1 +
1 file changed, 1 insertion(+)
(limited to 'drivers/net/team')
diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index 8c1e02752ff6..69dfb1a49cc8 100644
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -2112,6 +2112,7 @@ static void team_setup_by_port(struct net_device *dev,
dev->header_ops = port_dev->header_ops;
dev->type = port_dev->type;
dev->hard_header_len = port_dev->hard_header_len;
+ dev->needed_headroom = port_dev->needed_headroom;
dev->addr_len = port_dev->addr_len;
dev->mtu = port_dev->mtu;
memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len);
--
cgit v1.2.1
From 9a9e77495958c7382b2438bc19746dd3aaaabb8e Mon Sep 17 00:00:00 2001
From: Anant Thazhemadam <anant.thazhemadam@gmail.com>
Date: Mon, 5 Oct 2020 02:25:36 +0530
Subject: net: team: fix memory leak in __team_options_register
The variable "i" isn't initialized back correctly after the first loop
under the label inst_rollback gets executed.
The value of "i" is assigned to be option_count - 1, and the ensuing
loop (under alloc_rollback) begins by initializing i--.
Thus, the value of i when the loop begins execution will now become
i = option_count - 2.
Thus, when kfree(dst_opts[i]) is called in the second loop in this
order, (i.e., inst_rollback followed by alloc_rollback),
dst_optsp[option_count - 2] is the first element freed, and
dst_opts[option_count - 1] does not get freed, and thus, a memory
leak is caused.
This memory leak can be fixed, by assigning i = option_count (instead of
option_count - 1).
Fixes: 80f7c6683fe0 ("team: add support for per-port options")
Reported-by: syzbot+69b804437cfec30deac3@syzkaller.appspotmail.com
Tested-by: syzbot+69b804437cfec30deac3@syzkaller.appspotmail.com
Signed-off-by: Anant Thazhemadam <anant.thazhemadam@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/team/team.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
(limited to 'drivers/net/team')
diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index 69dfb1a49cc8..bcc4a4c011f1 100644
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -287,7 +287,7 @@ inst_rollback:
for (i--; i >= 0; i--)
__team_option_inst_del_option(team, dst_opts[i]);
- i = option_count - 1;
+ i = option_count;
alloc_rollback:
for (i--; i >= 0; i--)
kfree(dst_opts[i]);
--
cgit v1.2.1