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Message-Id: <cover.1729031472.git.danielyangkang@gmail.com>
Date: Tue, 15 Oct 2024 15:48:03 -0700
From: Daniel Yang <danielyangkang@...il.com>
To: Wenjia Zhang <wenjia@...ux.ibm.com>,
Jan Karcher <jaka@...ux.ibm.com>,
"D. Wythe" <alibuda@...ux.alibaba.com>,
Tony Lu <tonylu@...ux.alibaba.com>,
Wen Gu <guwen@...ux.alibaba.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
linux-s390@...r.kernel.org,
netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: danielyangkang@...il.com
Subject:
Date: Tue, 15 Oct 2024 15:31:12 -0700
Subject: [PATCH v3 0/2 RESEND] resolve gtp possible deadlock warning
Fixes deadlock described in this bug:
https://syzkaller.appspot.com/bug?extid=e953a8f3071f5c0a28fd.
Specific crash report here:
https://syzkaller.appspot.com/text?tag=CrashReport&x=14670e07980000.
This bug is a false positive lockdep warning since gtp and smc use
completely different socket protocols.
Lockdep thinks that lock_sock() in smc will deadlock with gtp's
lock_sock() acquisition.
Adding lockdep annotations on smc socket creation prevents these false
positives.
Daniel Yang (2):
Patch from D. Wythe <alibuda@...ux.alibaba.com>
Move lockdep annotation to separate function for readability.
net/smc/smc_inet.c | 29 ++++++++++++++++++++++++++++-
1 file changed, 28 insertions(+), 1 deletion(-)
--
2.39.2
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