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

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Message-ID: <20250512221029.56357-1-kuniyu@amazon.com>
Date: Mon, 12 May 2025 15:10:26 -0700
From: Kuniyuki Iwashima <kuniyu@...zon.com>
To: <syzbot+e953a8f3071f5c0a28fd@...kaller.appspotmail.com>
CC: <alibuda@...ux.alibaba.com>, <danielyang32@...cla.edu>,
	<danielyangkang@...il.com>, <davem@...emloft.net>, <edumazet@...gle.com>,
	<guwen@...ux.alibaba.com>, <hdanton@...a.com>, <jaka@...ux.ibm.com>,
	<kuba@...nel.org>, <kuniyu@...zon.com>, <laforge@...monks.org>,
	<linux-kernel@...r.kernel.org>, <linux-s390@...r.kernel.org>,
	<lkp@...el.com>, <llvm@...ts.linux.dev>, <netdev@...r.kernel.org>,
	<oe-kbuild-all@...ts.linux.dev>,
	<osmocom-net-gprs-bounces@...ts.osmocom.org>,
	<osmocom-net-gprs@...ts.osmocom.org>, <pabeni@...hat.com>,
	<pablo@...filter.org>, <syzkaller-bugs@...glegroups.com>,
	<tonylu@...ux.alibaba.com>, <wenjia@...ux.ibm.com>
Subject: Re: [syzbot] [net?] possible deadlock in gtp_encap_enable_socket

From: syzbot <syzbot+e953a8f3071f5c0a28fd@...kaller.appspotmail.com>
Date: Mon, 12 May 2025 09:08:04 -0700
> syzbot suspects this issue was fixed by commit:
> 
> commit 752e2217d789be2c6a6ac66554b981cd71cd9f31
> Author: Kuniyuki Iwashima <kuniyu@...zon.com>
> Date:   Mon Apr 7 17:03:17 2025 +0000
> 
>     smc: Fix lockdep false-positive for IPPROTO_SMC.
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=140462f4580000
> start commit:   9410645520e9 Merge tag 'net-next-6.12' of git://git.kernel..
> git tree:       net-next
> kernel config:  https://syzkaller.appspot.com/x/.config?x=37c006d80708398d
> dashboard link: https://syzkaller.appspot.com/bug?extid=e953a8f3071f5c0a28fd
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16215ca9980000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=110c6c27980000
> 
> If the result looks correct, please mark the issue as fixed by replying with:
> 
> #syz fix: smc: Fix lockdep false-positive for IPPROTO_SMC.

#syz fix: smc: Fix lockdep false-positive for IPPROTO_SMC.