[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20240917235027.218692-2-srikarananta01@gmail.com>
Date: Tue, 17 Sep 2024 19:50:28 -0400
From: AnantaSrikar <srikarananta01@...il.com>
To: syzbot+e4c27043b9315839452d@...kaller.appspotmail.com
Cc: alibuda@...ux.alibaba.com,
davem@...emloft.net,
dsahern@...nel.org,
dust.li@...ux.alibaba.com,
edumazet@...gle.com,
kuba@...nel.org,
linux-kernel@...r.kernel.org,
netdev@...r.kernel.org,
pabeni@...hat.com,
schnelle@...ux.ibm.com,
srikarananta01@...il.com,
syzkaller-bugs@...glegroups.com,
wenjia@...ux.ibm.com
Subject: [PATCH] net/ipv4: Fix circular deadlock in do_ip_setsockop
Fixed the circular lock dependency reported by syzkaller.
Signed-off-by: AnantaSrikar <srikarananta01@...il.com>
Reported-by: syzbot+e4c27043b9315839452d@...kaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=e4c27043b9315839452d
Fixes: d2bafcf224f3 ("Merge tag 'cgroup-for-6.11-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup")
---
net/ipv4/ip_sockglue.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index cf377377b52d..a8f46d1ba62b 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -1073,9 +1073,11 @@ int do_ip_setsockopt(struct sock *sk, int level, int optname,
}
err = 0;
+
+ sockopt_lock_sock(sk);
+
if (needs_rtnl)
rtnl_lock();
- sockopt_lock_sock(sk);
switch (optname) {
case IP_OPTIONS:
--
2.43.0
Powered by blists - more mailing lists