linux-kernel - Re: [syzbot] [net?] [s390?] possible deadlock in smc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20240710031620.58099-1-aha310510@gmail.com>
Date: Wed, 10 Jul 2024 12:16:20 +0900
From: Jeongjun Park <aha310510@...il.com>
To: syzbot+621fd56ba002faba6392@...kaller.appspotmail.com
Cc: linux-kernel@...r.kernel.org
Subject: Re: [syzbot] [net?] [s390?] possible deadlock in smc_release

#syz test git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

---
 net/smc/af_smc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index c5f98c6b2561..e7ec066b0d6a 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -294,6 +294,8 @@ static int __smc_release(struct smc_sock *smc)
 
 	sk->sk_prot->unhash(sk);
 
+	barrier();
+
 	if (sk->sk_state == SMC_CLOSED) {
 		if (smc->clcsock) {
 			release_sock(sk);
--