From: Jakub Kicinski <kuba@kernel.org>
To: Breno Leitao <leitao@debian.org>
Cc: Mike Galbraith <efault@gmx.de>,
paulmck@kernel.org, asml.silence@gmail.com,
LKML <linux-kernel@vger.kernel.org>,
netdev@vger.kernel.org, boqun.feng@gmail.com
Subject: Re: netconsole: HARDIRQ-safe -> HARDIRQ-unsafe lock order warning
Date: Thu, 14 Aug 2025 17:23:26 -0700 [thread overview]
Message-ID: <20250814172326.18cf2d72@kernel.org> (raw)
In-Reply-To: <oth5t27z6acp7qxut7u45ekyil7djirg2ny3bnsvnzeqasavxb@nhwdxahvcosh>
On Thu, 14 Aug 2025 03:16:11 -0700 Breno Leitao wrote:
> 2.2) netpoll // net poll will call the network subsystem to send the packet
> 2.3) lock(&fq->lock); // Try to get the lock while the lock was already held
Where does netpoll take fq->lock ?
We started hitting this a lot in the CI as well, lockdep must have
gotten more sensitive in 6.17. Last I checked lockdep didn't understand
that we manually test for nesting with netif_local_xmit_active().
next prev parent reply other threads:[~2025-08-15 0:23 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-13 4:14 netconsole: HARDIRQ-safe -> HARDIRQ-unsafe lock order warning Mike Galbraith
2025-08-14 10:16 ` Breno Leitao
2025-08-14 15:45 ` Pavel Begunkov
2025-08-15 0:23 ` Jakub Kicinski [this message]
2025-08-15 10:44 ` Pavel Begunkov
2025-08-15 16:42 ` Jakub Kicinski
2025-08-15 17:29 ` Breno Leitao
2025-08-15 17:33 ` Jakub Kicinski
2025-08-18 12:23 ` Breno Leitao
2025-08-15 19:10 ` Calvin Owens
2025-08-16 9:19 ` Mike Galbraith
2025-08-15 20:02 ` Pavel Begunkov
2025-08-18 12:10 ` Breno Leitao
2025-08-19 17:27 ` Breno Leitao
2025-08-20 12:31 ` Mike Galbraith
2025-08-20 17:36 ` Breno Leitao
2025-08-21 3:37 ` Mike Galbraith
2025-08-21 3:51 ` Mike Galbraith
2025-08-21 17:35 ` Breno Leitao
2025-08-22 3:54 ` Mike Galbraith
2025-08-26 12:43 ` Breno Leitao
2025-08-26 13:56 ` Mike Galbraith
2025-09-05 12:48 ` John Ogness
2025-09-06 2:32 ` Mike Galbraith
2025-09-08 13:30 ` John Ogness
2025-09-08 15:18 ` Mike Galbraith
2025-09-08 20:27 ` Calvin Owens
2025-09-09 15:49 ` Mike Galbraith
2025-09-10 15:51 ` Petr Mladek
2025-09-09 12:50 ` Breno Leitao
2025-09-10 12:22 ` John Ogness
2025-09-10 15:12 ` Petr Mladek
2025-09-10 18:26 ` Breno Leitao
2025-09-30 13:57 ` Calvin Owens
2025-09-30 14:23 ` John Ogness
2025-09-30 14:30 ` Sebastian Siewior
2025-09-30 17:35 ` Mike Galbraith
2025-10-01 6:00 ` Mike Galbraith
2025-09-11 13:03 ` John Ogness
2025-09-10 18:23 ` Breno Leitao
2025-09-11 13:13 ` John Ogness
2025-08-21 10:06 ` Mike Galbraith
2025-08-21 13:12 ` Mike Galbraith
2025-08-15 17:37 ` Calvin Owens
2025-08-26 14:10 ` Johannes Berg
2025-08-15 12:45 ` Mike Galbraith
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